Manually adding thirdparty libs

thirdparty/sokol/.gitignore

@@ -0,0 +1,15 @@
+.vscode/
+build/
+*.a
+*.o
+*.lib
+*.obj
+*.pdb
+*.bin
+*.exp
+*.ilk
+*.dll
+*.dylib
+*.exe
+*.dSYM/
+ols.json

thirdparty/sokol/CHANGELOG.md

@@ -0,0 +1,12 @@
+## CHANGELOG
+
+> NOTE: this changelog is only for changes to the sokol-odin 'scaffolding'.
+For actual Sokol header changes, see the
+[sokol changelog](https://github.com/floooh/sokol/blob/master/CHANGELOG.md).
+
+### 13-Apr-2024
+
+Merged PR https://github.com/floooh/sokol-odin/pull/11, this changes the
+directory structure of the bindings repository, adds support to build
+the Windows bindings as a DLL and a couple of smaller things
+detailed here: https://github.com/floooh/sokol/pull/1023

thirdparty/sokol/LICENSE

@@ -0,0 +1,22 @@
+zlib/libpng license
+
+Copyright (c) 2022 Andre Weissflog
+
+This software is provided 'as-is', without any express or implied warranty.
+In no event will the authors be held liable for any damages arising from the
+use of this software.
+
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it
+freely, subject to the following restrictions:
+
+    1. The origin of this software must not be misrepresented; you must not
+    claim that you wrote the original software. If you use this software in a
+    product, an acknowledgment in the product documentation would be
+    appreciated but is not required.
+
+    2. Altered source versions must be plainly marked as such, and must not
+    be misrepresented as being the original software.
+
+    3. This notice may not be removed or altered from any source
+    distribution.

thirdparty/sokol/README.md

@@ -0,0 +1,81 @@
+[![Odin](https://github.com/floooh/sokol-odin/actions/workflows/main.yml/badge.svg)](https://github.com/floooh/sokol-odin/actions/workflows/main.yml)
+
+Auto-generated [Odin](https://github.com/odin-lang/odin) bindings for the [sokol headers](https://github.com/floooh/sokol).
+
+To include sokol in your project you can copy the [sokol](sokol/) directory.
+
+## BUILD
+
+Supported platforms are: Windows, macOS, Linux (with X11)
+
+On Linux install the following packages: libglu1-mesa-dev, mesa-common-dev, xorg-dev, libasound-dev
+(or generally: the dev packages required for X11, GL and ALSA development)
+
+1. First build the required static link libraries:
+
+    ```
+    cd sokol
+    # on macOS:
+    ./build_clibs_macos.sh
+    # on Linux:
+    ./build_clibs_linux.sh
+    # on Windows with MSVC (from a 'Visual Studio Developer Command Prompt')
+    build_clibs_windows.cmd
+    cd ..
+    ```
+
+2. Create a build directory and cd into it:
+    ```
+    mkdir build
+    cd build
+    ```
+
+3. Build and run the samples:
+    ```
+    odin run ../examples/clear -debug
+    odin run ../examples/triangle -debug
+    odin run ../examples/quad -debug
+    odin run ../examples/bufferoffsets -debug
+    odin run ../examples/cube -debug
+    odin run ../examples/noninterleaved -debug
+    odin run ../examples/texcube -debug
+    odin run ../examples/shapes -debug
+    odin run ../examples/offscreen -debug
+    odin run ../examples/instancing -debug
+    odin run ../examples/mrt -debug
+    odin run ../examples/blend -debug
+    odin run ../examples/debugtext -debug
+    odin run ../examples/debugtext-print -debug
+    odin run ../examples/debugtext-userfont -debug
+    odin run ../examples/saudio -debug
+    odin run ../examples/sgl -debug
+    odin run ../examples/sgl-points -debug
+    odin run ../examples/sgl-context -debug
+    odin run ../examples/vertexpull -debug
+    ```
+
+    By default, the backend 3D API will be selected based on the target platform:
+
+    - macOS: Metal
+    - Windows: D3D11
+    - Linux: GL
+
+    To force the GL backend on macOS or Windows, build with ```-define:SOKOL_USE_GL=true```:
+
+    ```
+    odin run ../examples/clear -debug -define:SOKOL_USE_GL=true
+    ```
+
+    The ```clear``` sample prints the selected backend to the terminal:
+
+    ```
+    odin run ../examples/clear -debug -define:SOKOL_USE_GL=true
+    >> using GL backend
+    ```
+
+    On Windows, you can get rid of the automatically opened terminal window
+    by building with the ```-subsystem:windows``` option:
+
+    ```
+    odin build ../examples/clear -subsystem:windows
+    ```

thirdparty/sokol/audio/audio.odin

@@ -0,0 +1,649 @@
+// machine generated, do not edit
+
+package sokol_audio
+
+/*
+
+    sokol_audio.h -- cross-platform audio-streaming API
+
+    Project URL: https://github.com/floooh/sokol
+
+    Do this:
+        #define SOKOL_IMPL or
+        #define SOKOL_AUDIO_IMPL
+    before you include this file in *one* C or C++ file to create the
+    implementation.
+
+    Optionally provide the following defines with your own implementations:
+
+    SOKOL_DUMMY_BACKEND - use a dummy backend
+    SOKOL_ASSERT(c)     - your own assert macro (default: assert(c))
+    SOKOL_AUDIO_API_DECL- public function declaration prefix (default: extern)
+    SOKOL_API_DECL      - same as SOKOL_AUDIO_API_DECL
+    SOKOL_API_IMPL      - public function implementation prefix (default: -)
+
+    SAUDIO_RING_MAX_SLOTS           - max number of slots in the push-audio ring buffer (default 1024)
+    SAUDIO_OSX_USE_SYSTEM_HEADERS   - define this to force inclusion of system headers on
+                                      macOS instead of using embedded CoreAudio declarations
+
+    If sokol_audio.h is compiled as a DLL, define the following before
+    including the declaration or implementation:
+
+    SOKOL_DLL
+
+    On Windows, SOKOL_DLL will define SOKOL_AUDIO_API_DECL as __declspec(dllexport)
+    or __declspec(dllimport) as needed.
+
+    Link with the following libraries:
+
+    - on macOS: AudioToolbox
+    - on iOS: AudioToolbox, AVFoundation
+    - on FreeBSD: asound
+    - on Linux: asound
+    - on Android: aaudio
+    - on Windows with MSVC or Clang toolchain: no action needed, libs are defined in-source via pragma-comment-lib
+    - on Windows with MINGW/MSYS2 gcc: compile with '-mwin32' and link with -lole32
+
+    FEATURE OVERVIEW
+    ================
+    You provide a mono- or stereo-stream of 32-bit float samples, which
+    Sokol Audio feeds into platform-specific audio backends:
+
+    - Windows: WASAPI
+    - Linux: ALSA
+    - FreeBSD: ALSA
+    - macOS: CoreAudio
+    - iOS: CoreAudio+AVAudioSession
+    - emscripten: WebAudio with ScriptProcessorNode
+    - Android: AAudio
+
+    Sokol Audio will not do any buffer mixing or volume control, if you have
+    multiple independent input streams of sample data you need to perform the
+    mixing yourself before forwarding the data to Sokol Audio.
+
+    There are two mutually exclusive ways to provide the sample data:
+
+    1. Callback model: You provide a callback function, which will be called
+       when Sokol Audio needs new samples. On all platforms except emscripten,
+       this function is called from a separate thread.
+    2. Push model: Your code pushes small blocks of sample data from your
+       main loop or a thread you created. The pushed data is stored in
+       a ring buffer where it is pulled by the backend code when
+       needed.
+
+    The callback model is preferred because it is the most direct way to
+    feed sample data into the audio backends and also has less moving parts
+    (there is no ring buffer between your code and the audio backend).
+
+    Sometimes it is not possible to generate the audio stream directly in a
+    callback function running in a separate thread, for such cases Sokol Audio
+    provides the push-model as a convenience.
+
+    SOKOL AUDIO, SOLOUD AND MINIAUDIO
+    =================================
+    The WASAPI, ALSA and CoreAudio backend code has been taken from the
+    SoLoud library (with some modifications, so any bugs in there are most
+    likely my fault). If you need a more fully-featured audio solution, check
+    out SoLoud, it's excellent:
+
+        https://github.com/jarikomppa/soloud
+
+    Another alternative which feature-wise is somewhere inbetween SoLoud and
+    sokol-audio might be MiniAudio:
+
+        https://github.com/mackron/miniaudio
+
+    GLOSSARY
+    ========
+    - stream buffer:
+        The internal audio data buffer, usually provided by the backend API. The
+        size of the stream buffer defines the base latency, smaller buffers have
+        lower latency but may cause audio glitches. Bigger buffers reduce or
+        eliminate glitches, but have a higher base latency.
+
+    - stream callback:
+        Optional callback function which is called by Sokol Audio when it
+        needs new samples. On Windows, macOS/iOS and Linux, this is called in
+        a separate thread, on WebAudio, this is called per-frame in the
+        browser thread.
+
+    - channel:
+        A discrete track of audio data, currently 1-channel (mono) and
+        2-channel (stereo) is supported and tested.
+
+    - sample:
+        The magnitude of an audio signal on one channel at a given time. In
+        Sokol Audio, samples are 32-bit float numbers in the range -1.0 to
+        +1.0.
+
+    - frame:
+        The tightly packed set of samples for all channels at a given time.
+        For mono 1 frame is 1 sample. For stereo, 1 frame is 2 samples.
+
+    - packet:
+        In Sokol Audio, a small chunk of audio data that is moved from the
+        main thread to the audio streaming thread in order to decouple the
+        rate at which the main thread provides new audio data, and the
+        streaming thread consuming audio data.
+
+    WORKING WITH SOKOL AUDIO
+    ========================
+    First call saudio_setup() with your preferred audio playback options.
+    In most cases you can stick with the default values, these provide
+    a good balance between low-latency and glitch-free playback
+    on all audio backends.
+
+    You should always provide a logging callback to be aware of any
+    warnings and errors. The easiest way is to use sokol_log.h for this:
+
+        #include "sokol_log.h"
+        // ...
+        saudio_setup(&(saudio_desc){
+            .logger = {
+                .func = slog_func,
+            }
+        });
+
+    If you want to use the callback-model, you need to provide a stream
+    callback function either in saudio_desc.stream_cb or saudio_desc.stream_userdata_cb,
+    otherwise keep both function pointers zero-initialized.
+
+    Use push model and default playback parameters:
+
+        saudio_setup(&(saudio_desc){ .logger.func = slog_func });
+
+    Use stream callback model and default playback parameters:
+
+        saudio_setup(&(saudio_desc){
+            .stream_cb = my_stream_callback
+            .logger.func = slog_func,
+        });
+
+    The standard stream callback doesn't have a user data argument, if you want
+    that, use the alternative stream_userdata_cb and also set the user_data pointer:
+
+        saudio_setup(&(saudio_desc){
+            .stream_userdata_cb = my_stream_callback,
+            .user_data = &my_data
+            .logger.func = slog_func,
+        });
+
+    The following playback parameters can be provided through the
+    saudio_desc struct:
+
+    General parameters (both for stream-callback and push-model):
+
+        int sample_rate     -- the sample rate in Hz, default: 44100
+        int num_channels    -- number of channels, default: 1 (mono)
+        int buffer_frames   -- number of frames in streaming buffer, default: 2048
+
+    The stream callback prototype (either with or without userdata):
+
+        void (*stream_cb)(float* buffer, int num_frames, int num_channels)
+        void (*stream_userdata_cb)(float* buffer, int num_frames, int num_channels, void* user_data)
+            Function pointer to the user-provide stream callback.
+
+    Push-model parameters:
+
+        int packet_frames   -- number of frames in a packet, default: 128
+        int num_packets     -- number of packets in ring buffer, default: 64
+
+    The sample_rate and num_channels parameters are only hints for the audio
+    backend, it isn't guaranteed that those are the values used for actual
+    playback.
+
+    To get the actual parameters, call the following functions after
+    saudio_setup():
+
+        int saudio_sample_rate(void)
+        int saudio_channels(void);
+
+    It's unlikely that the number of channels will be different than requested,
+    but a different sample rate isn't uncommon.
+
+    (NOTE: there's an yet unsolved issue when an audio backend might switch
+    to a different sample rate when switching output devices, for instance
+    plugging in a bluetooth headset, this case is currently not handled in
+    Sokol Audio).
+
+    You can check if audio initialization was successful with
+    saudio_isvalid(). If backend initialization failed for some reason
+    (for instance when there's no audio device in the machine), this
+    will return false. Not checking for success won't do any harm, all
+    Sokol Audio function will silently fail when called after initialization
+    has failed, so apart from missing audio output, nothing bad will happen.
+
+    Before your application exits, you should call
+
+        saudio_shutdown();
+
+    This stops the audio thread (on Linux, Windows and macOS/iOS) and
+    properly shuts down the audio backend.
+
+    THE STREAM CALLBACK MODEL
+    =========================
+    To use Sokol Audio in stream-callback-mode, provide a callback function
+    like this in the saudio_desc struct when calling saudio_setup():
+
+    void stream_cb(float* buffer, int num_frames, int num_channels) {
+        ...
+    }
+
+    Or the alternative version with a user-data argument:
+
+    void stream_userdata_cb(float* buffer, int num_frames, int num_channels, void* user_data) {
+        my_data_t* my_data = (my_data_t*) user_data;
+        ...
+    }
+
+    The job of the callback function is to fill the *buffer* with 32-bit
+    float sample values.
+
+    To output silence, fill the buffer with zeros:
+
+        void stream_cb(float* buffer, int num_frames, int num_channels) {
+            const int num_samples = num_frames * num_channels;
+            for (int i = 0; i < num_samples; i++) {
+                buffer[i] = 0.0f;
+            }
+        }
+
+    For stereo output (num_channels == 2), the samples for the left
+    and right channel are interleaved:
+
+        void stream_cb(float* buffer, int num_frames, int num_channels) {
+            assert(2 == num_channels);
+            for (int i = 0; i < num_frames; i++) {
+                buffer[2*i + 0] = ...;  // left channel
+                buffer[2*i + 1] = ...;  // right channel
+            }
+        }
+
+    Please keep in mind that the stream callback function is running in a
+    separate thread, if you need to share data with the main thread you need
+    to take care yourself to make the access to the shared data thread-safe!
+
+    THE PUSH MODEL
+    ==============
+    To use the push-model for providing audio data, simply don't set (keep
+    zero-initialized) the stream_cb field in the saudio_desc struct when
+    calling saudio_setup().
+
+    To provide sample data with the push model, call the saudio_push()
+    function at regular intervals (for instance once per frame). You can
+    call the saudio_expect() function to ask Sokol Audio how much room is
+    in the ring buffer, but if you provide a continuous stream of data
+    at the right sample rate, saudio_expect() isn't required (it's a simple
+    way to sync/throttle your sample generation code with the playback
+    rate though).
+
+    With saudio_push() you may need to maintain your own intermediate sample
+    buffer, since pushing individual sample values isn't very efficient.
+    The following example is from the MOD player sample in
+    sokol-samples (https://github.com/floooh/sokol-samples):
+
+        const int num_frames = saudio_expect();
+        if (num_frames > 0) {
+            const int num_samples = num_frames * saudio_channels();
+            read_samples(flt_buf, num_samples);
+            saudio_push(flt_buf, num_frames);
+        }
+
+    Another option is to ignore saudio_expect(), and just push samples as they
+    are generated in small batches. In this case you *need* to generate the
+    samples at the right sample rate:
+
+    The following example is taken from the Tiny Emulators project
+    (https://github.com/floooh/chips-test), this is for mono playback,
+    so (num_samples == num_frames):
+
+        // tick the sound generator
+        if (ay38910_tick(&sys->psg)) {
+            // new sample is ready
+            sys->sample_buffer[sys->sample_pos++] = sys->psg.sample;
+            if (sys->sample_pos == sys->num_samples) {
+                // new sample packet is ready
+                saudio_push(sys->sample_buffer, sys->num_samples);
+                sys->sample_pos = 0;
+            }
+        }
+
+    THE WEBAUDIO BACKEND
+    ====================
+    The WebAudio backend is currently using a ScriptProcessorNode callback to
+    feed the sample data into WebAudio. ScriptProcessorNode has been
+    deprecated for a while because it is running from the main thread, with
+    the default initialization parameters it works 'pretty well' though.
+    Ultimately Sokol Audio will use Audio Worklets, but this requires a few
+    more things to fall into place (Audio Worklets implemented everywhere,
+    SharedArrayBuffers enabled again, and I need to figure out a 'low-cost'
+    solution in terms of implementation effort, since Audio Worklets are
+    a lot more complex than ScriptProcessorNode if the audio data needs to come
+    from the main thread).
+
+    The WebAudio backend is automatically selected when compiling for
+    emscripten (__EMSCRIPTEN__ define exists).
+
+    https://developers.google.com/web/updates/2017/12/audio-worklet
+    https://developers.google.com/web/updates/2018/06/audio-worklet-design-pattern
+
+    "Blob URLs": https://www.html5rocks.com/en/tutorials/workers/basics/
+
+    Also see: https://blog.paul.cx/post/a-wait-free-spsc-ringbuffer-for-the-web/
+
+    THE COREAUDIO BACKEND
+    =====================
+    The CoreAudio backend is selected on macOS and iOS (__APPLE__ is defined).
+    Since the CoreAudio API is implemented in C (not Objective-C) on macOS the
+    implementation part of Sokol Audio can be included into a C source file.
+
+    However on iOS, Sokol Audio must be compiled as Objective-C due to it's
+    reliance on the AVAudioSession object. The iOS code path support both
+    being compiled with or without ARC (Automatic Reference Counting).
+
+    For thread synchronisation, the CoreAudio backend will use the
+    pthread_mutex_* functions.
+
+    The incoming floating point samples will be directly forwarded to
+    CoreAudio without further conversion.
+
+    macOS and iOS applications that use Sokol Audio need to link with
+    the AudioToolbox framework.
+
+    THE WASAPI BACKEND
+    ==================
+    The WASAPI backend is automatically selected when compiling on Windows
+    (_WIN32 is defined).
+
+    For thread synchronisation a Win32 critical section is used.
+
+    WASAPI may use a different size for its own streaming buffer then requested,
+    so the base latency may be slightly bigger. The current backend implementation
+    converts the incoming floating point sample values to signed 16-bit
+    integers.
+
+    The required Windows system DLLs are linked with #pragma comment(lib, ...),
+    so you shouldn't need to add additional linker libs in the build process
+    (otherwise this is a bug which should be fixed in sokol_audio.h).
+
+    THE ALSA BACKEND
+    ================
+    The ALSA backend is automatically selected when compiling on Linux
+    ('linux' is defined).
+
+    For thread synchronisation, the pthread_mutex_* functions are used.
+
+    Samples are directly forwarded to ALSA in 32-bit float format, no
+    further conversion is taking place.
+
+    You need to link with the 'asound' library, and the <alsa/asoundlib.h>
+    header must be present (usually both are installed with some sort
+    of ALSA development package).
+
+
+    MEMORY ALLOCATION OVERRIDE
+    ==========================
+    You can override the memory allocation functions at initialization time
+    like this:
+
+        void* my_alloc(size_t size, void* user_data) {
+            return malloc(size);
+        }
+
+        void my_free(void* ptr, void* user_data) {
+            free(ptr);
+        }
+
+        ...
+            saudio_setup(&(saudio_desc){
+                // ...
+                .allocator = {
+                    .alloc_fn = my_alloc,
+                    .free_fn = my_free,
+                    .user_data = ...,
+                }
+            });
+        ...
+
+    If no overrides are provided, malloc and free will be used.
+
+    This only affects memory allocation calls done by sokol_audio.h
+    itself though, not any allocations in OS libraries.
+
+    Memory allocation will only happen on the same thread where saudio_setup()
+    was called, so you don't need to worry about thread-safety.
+
+
+    ERROR REPORTING AND LOGGING
+    ===========================
+    To get any logging information at all you need to provide a logging callback in the setup call
+    the easiest way is to use sokol_log.h:
+
+        #include "sokol_log.h"
+
+        saudio_setup(&(saudio_desc){ .logger.func = slog_func });
+
+    To override logging with your own callback, first write a logging function like this:
+
+        void my_log(const char* tag,                // e.g. 'saudio'
+                    uint32_t log_level,             // 0=panic, 1=error, 2=warn, 3=info
+                    uint32_t log_item_id,           // SAUDIO_LOGITEM_*
+                    const char* message_or_null,    // a message string, may be nullptr in release mode
+                    uint32_t line_nr,               // line number in sokol_audio.h
+                    const char* filename_or_null,   // source filename, may be nullptr in release mode
+                    void* user_data)
+        {
+            ...
+        }
+
+    ...and then setup sokol-audio like this:
+
+        saudio_setup(&(saudio_desc){
+            .logger = {
+                .func = my_log,
+                .user_data = my_user_data,
+            }
+        });
+
+    The provided logging function must be reentrant (e.g. be callable from
+    different threads).
+
+    If you don't want to provide your own custom logger it is highly recommended to use
+    the standard logger in sokol_log.h instead, otherwise you won't see any warnings or
+    errors.
+
+
+    LICENSE
+    =======
+
+    zlib/libpng license
+
+    Copyright (c) 2018 Andre Weissflog
+
+    This software is provided 'as-is', without any express or implied warranty.
+    In no event will the authors be held liable for any damages arising from the
+    use of this software.
+
+    Permission is granted to anyone to use this software for any purpose,
+    including commercial applications, and to alter it and redistribute it
+    freely, subject to the following restrictions:
+
+        1. The origin of this software must not be misrepresented; you must not
+        claim that you wrote the original software. If you use this software in a
+        product, an acknowledgment in the product documentation would be
+        appreciated but is not required.
+
+        2. Altered source versions must be plainly marked as such, and must not
+        be misrepresented as being the original software.
+
+        3. This notice may not be removed or altered from any source
+        distribution.
+
+*/
+
+import "core:c"
+
+_ :: c
+
+SOKOL_DEBUG :: #config(SOKOL_DEBUG, ODIN_DEBUG)
+
+DEBUG :: #config(SOKOL_AUDIO_DEBUG, SOKOL_DEBUG)
+USE_GL :: #config(SOKOL_USE_GL, false)
+USE_DLL :: #config(SOKOL_DLL, false)
+
+when ODIN_OS == .Windows {
+    when USE_DLL {
+        when USE_GL {
+            when DEBUG { foreign import sokol_audio_clib { "../sokol_dll_windows_x64_gl_debug.lib" } }
+            else       { foreign import sokol_audio_clib { "../sokol_dll_windows_x64_gl_release.lib" } }
+        } else {
+            when DEBUG { foreign import sokol_audio_clib { "../sokol_dll_windows_x64_d3d11_debug.lib" } }
+            else       { foreign import sokol_audio_clib { "../sokol_dll_windows_x64_d3d11_release.lib" } }
+        }
+    } else {
+        when USE_GL {
+            when DEBUG { foreign import sokol_audio_clib { "sokol_audio_windows_x64_gl_debug.lib" } }
+            else       { foreign import sokol_audio_clib { "sokol_audio_windows_x64_gl_release.lib" } }
+        } else {
+            when DEBUG { foreign import sokol_audio_clib { "sokol_audio_windows_x64_d3d11_debug.lib" } }
+            else       { foreign import sokol_audio_clib { "sokol_audio_windows_x64_d3d11_release.lib" } }
+        }
+    }
+} else when ODIN_OS == .Darwin {
+    when USE_DLL {
+             when  USE_GL && ODIN_ARCH == .arm64 &&  DEBUG { foreign import sokol_audio_clib { "../dylib/sokol_dylib_macos_arm64_gl_debug.dylib" } }
+        else when  USE_GL && ODIN_ARCH == .arm64 && !DEBUG { foreign import sokol_audio_clib { "../dylib/sokol_dylib_macos_arm64_gl_release.dylib" } }
+        else when  USE_GL && ODIN_ARCH == .amd64 &&  DEBUG { foreign import sokol_audio_clib { "../dylib/sokol_dylib_macos_x64_gl_debug.dylib" } }
+        else when  USE_GL && ODIN_ARCH == .amd64 && !DEBUG { foreign import sokol_audio_clib { "../dylib/sokol_dylib_macos_x64_gl_release.dylib" } }
+        else when !USE_GL && ODIN_ARCH == .arm64 &&  DEBUG { foreign import sokol_audio_clib { "../dylib/sokol_dylib_macos_arm64_metal_debug.dylib" } }
+        else when !USE_GL && ODIN_ARCH == .arm64 && !DEBUG { foreign import sokol_audio_clib { "../dylib/sokol_dylib_macos_arm64_metal_release.dylib" } }
+        else when !USE_GL && ODIN_ARCH == .amd64 &&  DEBUG { foreign import sokol_audio_clib { "../dylib/sokol_dylib_macos_x64_metal_debug.dylib" } }
+        else when !USE_GL && ODIN_ARCH == .amd64 && !DEBUG { foreign import sokol_audio_clib { "../dylib/sokol_dylib_macos_x64_metal_release.dylib" } }
+    } else {
+        when USE_GL {
+            when ODIN_ARCH == .arm64 {
+                when DEBUG { foreign import sokol_audio_clib { "sokol_audio_macos_arm64_gl_debug.a", "system:AudioToolbox.framework" } }
+                else       { foreign import sokol_audio_clib { "sokol_audio_macos_arm64_gl_release.a", "system:AudioToolbox.framework" } }
+            } else {
+                when DEBUG { foreign import sokol_audio_clib { "sokol_audio_macos_x64_gl_debug.a", "system:AudioToolbox.framework" } }
+                else       { foreign import sokol_audio_clib { "sokol_audio_macos_x64_gl_release.a", "system:AudioToolbox.framework" } }
+            }
+        } else {
+            when ODIN_ARCH == .arm64 {
+                when DEBUG { foreign import sokol_audio_clib { "sokol_audio_macos_arm64_metal_debug.a", "system:AudioToolbox.framework" } }
+                else       { foreign import sokol_audio_clib { "sokol_audio_macos_arm64_metal_release.a", "system:AudioToolbox.framework" } }
+            } else {
+                when DEBUG { foreign import sokol_audio_clib { "sokol_audio_macos_x64_metal_debug.a", "system:AudioToolbox.framework" } }
+                else       { foreign import sokol_audio_clib { "sokol_audio_macos_x64_metal_release.a", "system:AudioToolbox.framework" } }
+            }
+        }
+    }
+} else when ODIN_OS == .Linux {
+    when USE_DLL {
+        when DEBUG { foreign import sokol_audio_clib { "sokol_audio_linux_x64_gl_debug.so", "system:asound", "system:dl", "system:pthread" } }
+        else       { foreign import sokol_audio_clib { "sokol_audio_linux_x64_gl_release.so", "system:asound", "system:dl", "system:pthread" } }
+    } else {
+        when DEBUG { foreign import sokol_audio_clib { "sokol_audio_linux_x64_gl_debug.a", "system:asound", "system:dl", "system:pthread" } }
+        else       { foreign import sokol_audio_clib { "sokol_audio_linux_x64_gl_release.a", "system:asound", "system:dl", "system:pthread" } }
+    }
+} else when ODIN_ARCH == .wasm32 || ODIN_ARCH == .wasm64p32 {
+    // Feed sokol_audio_wasm_gl_debug.a or sokol_audio_wasm_gl_release.a into emscripten compiler.
+    foreign import sokol_audio_clib { "env.o" }
+} else {
+    #panic("This OS is currently not supported")
+}
+
+@(default_calling_convention="c", link_prefix="saudio_")
+foreign sokol_audio_clib {
+    // setup sokol-audio
+    setup :: proc(#by_ptr desc: Desc)  ---
+    // shutdown sokol-audio
+    shutdown :: proc()  ---
+    // true after setup if audio backend was successfully initialized
+    isvalid :: proc() -> bool ---
+    // return the saudio_desc.user_data pointer
+    userdata :: proc() -> rawptr ---
+    // return a copy of the original saudio_desc struct
+    query_desc :: proc() -> Desc ---
+    // actual sample rate
+    sample_rate :: proc() -> c.int ---
+    // return actual backend buffer size in number of frames
+    buffer_frames :: proc() -> c.int ---
+    // actual number of channels
+    channels :: proc() -> c.int ---
+    // return true if audio context is currently suspended (only in WebAudio backend, all other backends return false)
+    suspended :: proc() -> bool ---
+    // get current number of frames to fill packet queue
+    expect :: proc() -> c.int ---
+    // push sample frames from main thread, returns number of frames actually pushed
+    push :: proc(frames: ^f32, #any_int num_frames: c.int) -> c.int ---
+}
+
+Log_Item :: enum i32 {
+    OK,
+    MALLOC_FAILED,
+    ALSA_SND_PCM_OPEN_FAILED,
+    ALSA_FLOAT_SAMPLES_NOT_SUPPORTED,
+    ALSA_REQUESTED_BUFFER_SIZE_NOT_SUPPORTED,
+    ALSA_REQUESTED_CHANNEL_COUNT_NOT_SUPPORTED,
+    ALSA_SND_PCM_HW_PARAMS_SET_RATE_NEAR_FAILED,
+    ALSA_SND_PCM_HW_PARAMS_FAILED,
+    ALSA_PTHREAD_CREATE_FAILED,
+    WASAPI_CREATE_EVENT_FAILED,
+    WASAPI_CREATE_DEVICE_ENUMERATOR_FAILED,
+    WASAPI_GET_DEFAULT_AUDIO_ENDPOINT_FAILED,
+    WASAPI_DEVICE_ACTIVATE_FAILED,
+    WASAPI_AUDIO_CLIENT_INITIALIZE_FAILED,
+    WASAPI_AUDIO_CLIENT_GET_BUFFER_SIZE_FAILED,
+    WASAPI_AUDIO_CLIENT_GET_SERVICE_FAILED,
+    WASAPI_AUDIO_CLIENT_SET_EVENT_HANDLE_FAILED,
+    WASAPI_CREATE_THREAD_FAILED,
+    AAUDIO_STREAMBUILDER_OPEN_STREAM_FAILED,
+    AAUDIO_PTHREAD_CREATE_FAILED,
+    AAUDIO_RESTARTING_STREAM_AFTER_ERROR,
+    USING_AAUDIO_BACKEND,
+    AAUDIO_CREATE_STREAMBUILDER_FAILED,
+    COREAUDIO_NEW_OUTPUT_FAILED,
+    COREAUDIO_ALLOCATE_BUFFER_FAILED,
+    COREAUDIO_START_FAILED,
+    BACKEND_BUFFER_SIZE_ISNT_MULTIPLE_OF_PACKET_SIZE,
+}
+
+/*
+    saudio_logger
+
+    Used in saudio_desc to provide a custom logging and error reporting
+    callback to sokol-audio.
+*/
+Logger :: struct {
+    func : proc "c" (a0: cstring, a1: u32, a2: u32, a3: cstring, a4: u32, a5: cstring, a6: rawptr),
+    user_data : rawptr,
+}
+
+/*
+    saudio_allocator
+
+    Used in saudio_desc to provide custom memory-alloc and -free functions
+    to sokol_audio.h. If memory management should be overridden, both the
+    alloc_fn and free_fn function must be provided (e.g. it's not valid to
+    override one function but not the other).
+*/
+Allocator :: struct {
+    alloc_fn : proc "c" (a0: c.size_t, a1: rawptr) -> rawptr,
+    free_fn : proc "c" (a0: rawptr, a1: rawptr),
+    user_data : rawptr,
+}
+
+Desc :: struct {
+    sample_rate : c.int,
+    num_channels : c.int,
+    buffer_frames : c.int,
+    packet_frames : c.int,
+    num_packets : c.int,
+    stream_cb : proc "c" (a0: ^f32, a1: c.int, a2: c.int),
+    stream_userdata_cb : proc "c" (a0: ^f32, a1: c.int, a2: c.int, a3: rawptr),
+    user_data : rawptr,
+    allocator : Allocator,
+    logger : Logger,
+}
+

thirdparty/sokol/build_clibs_linux.sh

@@ -0,0 +1,49 @@
+set -e
+
+build_lib_x64_release() {
+    src=$1
+    dst=$2
+    backend=$3
+    echo $dst
+    # static
+    cc -pthread -c -O2 -DNDEBUG -DIMPL -D$backend c/$src.c
+    ar rcs $dst.a $src.o
+    # shared
+    cc -pthread -shared -O2 -fPIC -DNDEBUG -DIMPL -D$backend -o $dst.so c/$src.c
+}
+
+build_lib_x64_debug() {
+    src=$1
+    dst=$2
+    backend=$3
+    echo $dst
+    # static
+    cc -pthread -c -g -DIMPL -D$backend c/$src.c
+    ar rcs $dst.a $src.o
+    # shared
+    cc -pthread -shared -g -fPIC -DIMPL -D$backend -o $dst.so c/$src.c
+}
+
+# x64 + GL + Release
+build_lib_x64_release sokol_log         log/sokol_log_linux_x64_gl_release SOKOL_GLCORE
+build_lib_x64_release sokol_gfx         gfx/sokol_gfx_linux_x64_gl_release SOKOL_GLCORE
+build_lib_x64_release sokol_app         app/sokol_app_linux_x64_gl_release SOKOL_GLCORE
+build_lib_x64_release sokol_glue        glue/sokol_glue_linux_x64_gl_release SOKOL_GLCORE
+build_lib_x64_release sokol_time        time/sokol_time_linux_x64_gl_release SOKOL_GLCORE
+build_lib_x64_release sokol_audio       audio/sokol_audio_linux_x64_gl_release SOKOL_GLCORE
+build_lib_x64_release sokol_debugtext   debugtext/sokol_debugtext_linux_x64_gl_release SOKOL_GLCORE
+build_lib_x64_release sokol_shape       shape/sokol_shape_linux_x64_gl_release SOKOL_GLCORE
+build_lib_x64_release sokol_gl          gl/sokol_gl_linux_x64_gl_release SOKOL_GLCORE
+
+# x64 + GL + Debug
+build_lib_x64_debug sokol_log           log/sokol_log_linux_x64_gl_debug SOKOL_GLCORE
+build_lib_x64_debug sokol_gfx           gfx/sokol_gfx_linux_x64_gl_debug SOKOL_GLCORE
+build_lib_x64_debug sokol_app           app/sokol_app_linux_x64_gl_debug SOKOL_GLCORE
+build_lib_x64_debug sokol_glue          glue/sokol_glue_linux_x64_gl_debug SOKOL_GLCORE
+build_lib_x64_debug sokol_time          time/sokol_time_linux_x64_gl_debug SOKOL_GLCORE
+build_lib_x64_debug sokol_audio         audio/sokol_audio_linux_x64_gl_debug SOKOL_GLCORE
+build_lib_x64_debug sokol_debugtext     debugtext/sokol_debugtext_linux_x64_gl_debug SOKOL_GLCORE
+build_lib_x64_debug sokol_shape         shape/sokol_shape_linux_x64_gl_debug SOKOL_GLCORE
+build_lib_x64_debug sokol_gl            gl/sokol_gl_linux_x64_gl_debug SOKOL_GLCORE
+
+rm *.o

thirdparty/sokol/build_clibs_macos.sh

@@ -0,0 +1,127 @@
+set -e
+
+build_lib_arm64_release() {
+    src=$1
+    dst=$2
+    backend=$3
+    echo $dst
+    MACOSX_DEPLOYMENT_TARGET=10.13 clang -c -O2 -x objective-c -arch arm64 -DNDEBUG -DIMPL -D$backend c/$src.c
+    ar rcs $dst.a $src.o
+}
+
+build_lib_arm64_debug() {
+    src=$1
+    dst=$2
+    backend=$3
+    echo $dst
+    MACOSX_DEPLOYMENT_TARGET=10.13 clang -c -g -x objective-c -arch arm64 -DIMPL -D$backend c/$src.c
+    ar rcs $dst.a $src.o
+}
+
+build_lib_x64_release() {
+    src=$1
+    dst=$2
+    backend=$3
+    echo $dst
+    MACOSX_DEPLOYMENT_TARGET=10.13 clang -c -O2 -x objective-c -arch x86_64 -DNDEBUG -DIMPL -D$backend c/$src.c
+    ar rcs $dst.a $src.o
+}
+
+build_lib_x64_debug() {
+    src=$1
+    dst=$2
+    backend=$3
+    echo $dst
+    MACOSX_DEPLOYMENT_TARGET=10.13 clang -c -g -x objective-c -arch x86_64 -DIMPL -D$backend c/$src.c
+    ar rcs $dst.a $src.o
+}
+
+# ARM + Metal + Release
+build_lib_arm64_release sokol_log         log/sokol_log_macos_arm64_metal_release SOKOL_METAL
+build_lib_arm64_release sokol_gfx         gfx/sokol_gfx_macos_arm64_metal_release SOKOL_METAL
+build_lib_arm64_release sokol_app         app/sokol_app_macos_arm64_metal_release SOKOL_METAL
+build_lib_arm64_release sokol_glue        glue/sokol_glue_macos_arm64_metal_release SOKOL_METAL
+build_lib_arm64_release sokol_time        time/sokol_time_macos_arm64_metal_release SOKOL_METAL
+build_lib_arm64_release sokol_audio       audio/sokol_audio_macos_arm64_metal_release SOKOL_METAL
+build_lib_arm64_release sokol_debugtext   debugtext/sokol_debugtext_macos_arm64_metal_release SOKOL_METAL
+build_lib_arm64_release sokol_shape       shape/sokol_shape_macos_arm64_metal_release SOKOL_METAL
+build_lib_arm64_release sokol_gl          gl/sokol_gl_macos_arm64_metal_release SOKOL_METAL
+
+# ARM + Metal + Debug
+build_lib_arm64_debug sokol_log           log/sokol_log_macos_arm64_metal_debug SOKOL_METAL
+build_lib_arm64_debug sokol_gfx           gfx/sokol_gfx_macos_arm64_metal_debug SOKOL_METAL
+build_lib_arm64_debug sokol_app           app/sokol_app_macos_arm64_metal_debug SOKOL_METAL
+build_lib_arm64_debug sokol_glue          glue/sokol_glue_macos_arm64_metal_debug SOKOL_METAL
+build_lib_arm64_debug sokol_time          time/sokol_time_macos_arm64_metal_debug SOKOL_METAL
+build_lib_arm64_debug sokol_audio         audio/sokol_audio_macos_arm64_metal_debug SOKOL_METAL
+build_lib_arm64_debug sokol_debugtext     debugtext/sokol_debugtext_macos_arm64_metal_debug SOKOL_METAL
+build_lib_arm64_debug sokol_shape         shape/sokol_shape_macos_arm64_metal_debug SOKOL_METAL
+build_lib_arm64_debug sokol_gl            gl/sokol_gl_macos_arm64_metal_debug SOKOL_METAL
+
+# x64 + Metal + Release
+build_lib_x64_release sokol_log         log/sokol_log_macos_x64_metal_release SOKOL_METAL
+build_lib_x64_release sokol_gfx         gfx/sokol_gfx_macos_x64_metal_release SOKOL_METAL
+build_lib_x64_release sokol_app         app/sokol_app_macos_x64_metal_release SOKOL_METAL
+build_lib_x64_release sokol_glue        glue/sokol_glue_macos_x64_metal_release SOKOL_METAL
+build_lib_x64_release sokol_time        time/sokol_time_macos_x64_metal_release SOKOL_METAL
+build_lib_x64_release sokol_audio       audio/sokol_audio_macos_x64_metal_release SOKOL_METAL
+build_lib_x64_release sokol_debugtext   debugtext/sokol_debugtext_macos_x64_metal_release SOKOL_METAL
+build_lib_x64_release sokol_shape       shape/sokol_shape_macos_x64_metal_release SOKOL_METAL
+build_lib_x64_release sokol_gl          gl/sokol_gl_macos_x64_metal_release SOKOL_METAL
+
+# x64 + Metal + Debug
+build_lib_x64_debug sokol_log           log/sokol_log_macos_x64_metal_debug SOKOL_METAL
+build_lib_x64_debug sokol_gfx           gfx/sokol_gfx_macos_x64_metal_debug SOKOL_METAL
+build_lib_x64_debug sokol_app           app/sokol_app_macos_x64_metal_debug SOKOL_METAL
+build_lib_x64_debug sokol_glue          glue/sokol_glue_macos_x64_metal_debug SOKOL_METAL
+build_lib_x64_debug sokol_time          time/sokol_time_macos_x64_metal_debug SOKOL_METAL
+build_lib_x64_debug sokol_audio         audio/sokol_audio_macos_x64_metal_debug SOKOL_METAL
+build_lib_x64_debug sokol_debugtext     debugtext/sokol_debugtext_macos_x64_metal_debug SOKOL_METAL
+build_lib_x64_debug sokol_shape         shape/sokol_shape_macos_x64_metal_debug SOKOL_METAL
+build_lib_x64_debug sokol_gl            gl/sokol_gl_macos_x64_metal_debug SOKOL_METAL
+
+# ARM + GL + Release
+build_lib_arm64_release sokol_log         log/sokol_log_macos_arm64_gl_release SOKOL_GLCORE
+build_lib_arm64_release sokol_gfx         gfx/sokol_gfx_macos_arm64_gl_release SOKOL_GLCORE
+build_lib_arm64_release sokol_app         app/sokol_app_macos_arm64_gl_release SOKOL_GLCORE
+build_lib_arm64_release sokol_glue        glue/sokol_glue_macos_arm64_gl_release SOKOL_GLCORE
+build_lib_arm64_release sokol_time        time/sokol_time_macos_arm64_gl_release SOKOL_GLCORE
+build_lib_arm64_release sokol_audio       audio/sokol_audio_macos_arm64_gl_release SOKOL_GLCORE
+build_lib_arm64_release sokol_debugtext   debugtext/sokol_debugtext_macos_arm64_gl_release SOKOL_GLCORE
+build_lib_arm64_release sokol_shape       shape/sokol_shape_macos_arm64_gl_release SOKOL_GLCORE
+build_lib_arm64_release sokol_gl          gl/sokol_gl_macos_arm64_gl_release SOKOL_GLCORE
+
+# ARM + GL + Debug
+build_lib_arm64_debug sokol_log           log/sokol_log_macos_arm64_gl_debug SOKOL_GLCORE
+build_lib_arm64_debug sokol_gfx           gfx/sokol_gfx_macos_arm64_gl_debug SOKOL_GLCORE
+build_lib_arm64_debug sokol_app           app/sokol_app_macos_arm64_gl_debug SOKOL_GLCORE
+build_lib_arm64_debug sokol_glue          glue/sokol_glue_macos_arm64_gl_debug SOKOL_GLCORE
+build_lib_arm64_debug sokol_time          time/sokol_time_macos_arm64_gl_debug SOKOL_GLCORE
+build_lib_arm64_debug sokol_audio         audio/sokol_audio_macos_arm64_gl_debug SOKOL_GLCORE
+build_lib_arm64_debug sokol_debugtext     debugtext/sokol_debugtext_macos_arm64_gl_debug SOKOL_GLCORE
+build_lib_arm64_debug sokol_shape         shape/sokol_shape_macos_arm64_gl_debug SOKOL_GLCORE
+build_lib_arm64_debug sokol_gl            gl/sokol_gl_macos_arm64_gl_debug SOKOL_GLCORE
+
+# x64 + GL + Release
+build_lib_x64_release sokol_log         log/sokol_log_macos_x64_gl_release SOKOL_GLCORE
+build_lib_x64_release sokol_gfx         gfx/sokol_gfx_macos_x64_gl_release SOKOL_GLCORE
+build_lib_x64_release sokol_app         app/sokol_app_macos_x64_gl_release SOKOL_GLCORE
+build_lib_x64_release sokol_glue        glue/sokol_glue_macos_x64_gl_release SOKOL_GLCORE
+build_lib_x64_release sokol_time        time/sokol_time_macos_x64_gl_release SOKOL_GLCORE
+build_lib_x64_release sokol_audio       audio/sokol_audio_macos_x64_gl_release SOKOL_GLCORE
+build_lib_x64_release sokol_debugtext   debugtext/sokol_debugtext_macos_x64_gl_release SOKOL_GLCORE
+build_lib_x64_release sokol_shape       shape/sokol_shape_macos_x64_gl_release SOKOL_GLCORE
+build_lib_x64_release sokol_gl          gl/sokol_gl_macos_x64_gl_release SOKOL_GLCORE
+
+# x64 + GL + Debug
+build_lib_x64_debug sokol_log           log/sokol_log_macos_x64_gl_debug SOKOL_GLCORE
+build_lib_x64_debug sokol_gfx           gfx/sokol_gfx_macos_x64_gl_debug SOKOL_GLCORE
+build_lib_x64_debug sokol_app           app/sokol_app_macos_x64_gl_debug SOKOL_GLCORE
+build_lib_x64_debug sokol_glue          glue/sokol_glue_macos_x64_gl_debug SOKOL_GLCORE
+build_lib_x64_debug sokol_time          time/sokol_time_macos_x64_gl_debug SOKOL_GLCORE
+build_lib_x64_debug sokol_audio         audio/sokol_audio_macos_x64_gl_debug SOKOL_GLCORE
+build_lib_x64_debug sokol_debugtext     debugtext/sokol_debugtext_macos_x64_gl_debug SOKOL_GLCORE
+build_lib_x64_debug sokol_shape         shape/sokol_shape_macos_x64_gl_debug SOKOL_GLCORE
+build_lib_x64_debug sokol_gl            gl/sokol_gl_macos_x64_gl_debug SOKOL_GLCORE
+
+rm *.o

thirdparty/sokol/build_clibs_macos_dylib.sh

@@ -0,0 +1,50 @@
+set -e
+
+FRAMEWORKS_METAL="-framework Metal -framework MetalKit"
+FRAMEWORKS_OPENGL="-framework OpenGL"
+FRAMEWORKS_CORE="-framework Foundation -framework CoreGraphics -framework Cocoa -framework QuartzCore -framework CoreAudio -framework AudioToolbox"
+
+build_lib_release() {
+    src=$1
+    dst=$2
+    backend=$3
+    arch=$4
+    frameworks=""
+    if [ $backend = "SOKOL_METAL" ]; then
+        frameworks="${frameworks} ${FRAMEWORKS_METAL}"
+    else
+        frameworks="${frameworks} ${FRAMEWORKS_OPENGL}"
+    fi
+    echo $dst
+    MACOSX_DEPLOYMENT_TARGET=10.13 clang -c -O2 -x objective-c -arch $arch -DNDEBUG -DIMPL -D$backend c/$src.c
+    clang -dynamiclib -arch $arch $FRAMEWORKS_CORE $frameworks -o $dst.dylib $src.o $dep
+}
+
+build_lib_debug() {
+    src=$1
+    dst=$2
+    backend=$3
+    arch=$4
+    frameworks=""
+    if [ $backend = "SOKOL_METAL" ]; then
+        frameworks="${frameworks} ${FRAMEWORKS_METAL}"
+    else
+        frameworks="${frameworks} ${FRAMEWORKS_OPENGL}"
+    fi
+    echo $dst
+    MACOSX_DEPLOYMENT_TARGET=10.13 clang -c -g -x objective-c -arch $arch -DIMPL -D$backend c/$src.c
+    clang -dynamiclib -arch $arch $FRAMEWORKS_CORE $frameworks -o $dst.dylib $src.o $dep
+}
+
+mkdir -p dylib
+
+build_lib_release sokol dylib/sokol_dylib_macos_arm64_metal_release SOKOL_METAL    arm64
+build_lib_debug   sokol dylib/sokol_dylib_macos_arm64_metal_debug   SOKOL_METAL    arm64
+build_lib_release sokol dylib/sokol_dylib_macos_x64_metal_release   SOKOL_METAL    x86_64
+build_lib_debug   sokol dylib/sokol_dylib_macos_x64_metal_debug     SOKOL_METAL    x86_64
+build_lib_release sokol dylib/sokol_dylib_macos_arm64_gl_release    SOKOL_GLCORE arm64
+build_lib_debug   sokol dylib/sokol_dylib_macos_arm64_gl_debug      SOKOL_GLCORE arm64
+build_lib_release sokol dylib/sokol_dylib_macos_x64_gl_release      SOKOL_GLCORE x86_64
+build_lib_debug   sokol dylib/sokol_dylib_macos_x64_gl_debug        SOKOL_GLCORE x86_64
+
+rm *.o

thirdparty/sokol/build_clibs_wasm.bat

@@ -0,0 +1,19 @@
+@echo off
+
+set sources=log app gfx glue time audio debugtext shape gl
+
+REM Debug
+for %%s in (%sources%) do (
+    echo %%s\sokol_%%s_wasm_gl_debug.a
+    call emcc -c -g -DIMPL -DSOKOL_GLES3 c\sokol_%%s.c
+    call emar rcs %%s\sokol_%%s_wasm_gl_debug.a sokol_%%s.o
+    del sokol_%%s.o
+)
+
+REM Release
+for %%s in (%sources%) do (
+    echo %%s\sokol_%%s_wasm_gl_release.a
+    call emcc -c -O2 -DNDEBUG -DIMPL -DSOKOL_GLES3 c\sokol_%%s.c
+    call emar rcs %%s\sokol_%%s_wasm_gl_release.a sokol_%%s.o
+    del sokol_%%s.o
+)

thirdparty/sokol/build_clibs_wasm.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+set -e
+
+declare -a libs=("log" "gfx" "app" "glue" "time" "audio" "debugtext" "shape" "gl")
+
+for l in "${libs[@]}"
+do
+    echo "${l}/sokol_${l}_wasm_gl_debug.a"
+    emcc -c -g -DIMPL -DSOKOL_GLES3 c/sokol_$l.c
+    emar rcs $l/sokol_${l}_wasm_gl_debug.a sokol_$l.o
+    rm sokol_$l.o
+done
+
+for l in "${libs[@]}"
+do
+    echo "${l}/sokol_${l}_wasm_gl_release.a"
+    emcc -c -O2 -DNDEBUG -DIMPL -DSOKOL_GLES3 c/sokol_$l.c
+    emar rcs $l/sokol_${l}_wasm_gl_release.a sokol_$l.o
+    rm sokol_$l.o
+done

thirdparty/sokol/build_clibs_windows.cmd

@@ -0,0 +1,45 @@
+@echo off
+
+set sources=log app gfx glue time audio debugtext shape gl
+
+REM D3D11 Debug
+for %%s in (%sources%) do (
+    cl /c /D_DEBUG /DIMPL /DSOKOL_D3D11 c\sokol_%%s.c /Z7
+    lib /OUT:%%s\sokol_%%s_windows_x64_d3d11_debug.lib sokol_%%s.obj
+    del sokol_%%s.obj
+)
+
+REM D3D11 Release
+for %%s in (%sources%) do (
+    cl /c /O2 /DNDEBUG /DIMPL /DSOKOL_D3D11 c\sokol_%%s.c
+    lib /OUT:%%s\sokol_%%s_windows_x64_d3d11_release.lib sokol_%%s.obj
+    del sokol_%%s.obj
+)
+
+REM GL Debug
+for %%s in (%sources%) do (
+    cl /c /D_DEBUG /DIMPL /DSOKOL_GLCORE c\sokol_%%s.c /Z7
+    lib /OUT:%%s\sokol_%%s_windows_x64_gl_debug.lib sokol_%%s.obj
+    del sokol_%%s.obj
+)
+
+REM GL Release
+for %%s in (%sources%) do (
+    cl /c /O2 /DNDEBUG /DIMPL /DSOKOL_GLCORE c\sokol_%%s.c
+    lib /OUT:%%s\sokol_%%s_windows_x64_gl_release.lib sokol_%%s.obj
+    del sokol_%%s.obj
+)
+
+REM D3D11 Debug DLL
+cl /D_DEBUG /DIMPL /DSOKOL_DLL /DSOKOL_D3D11 c\sokol.c /Z7 /LDd /MDd /DLL /Fe:sokol_dll_windows_x64_d3d11_debug.dll /link /INCREMENTAL:NO
+
+REM D3D11 Release DLL
+cl /D_DEBUG /DIMPL /DSOKOL_DLL /DSOKOL_D3D11 c\sokol.c /LD /MD /DLL /Fe:sokol_dll_windows_x64_d3d11_release.dll /link /INCREMENTAL:NO
+
+REM GL Debug DLL
+cl /D_DEBUG /DIMPL /DSOKOL_DLL /DSOKOL_GLCORE c\sokol.c /Z7 /LDd /MDd /DLL /Fe:sokol_dll_windows_x64_gl_debug.dll /link /INCREMENTAL:NO
+
+REM GL Release DLL
+cl /D_DEBUG /DIMPL /DSOKOL_DLL /DSOKOL_GLCORE c\sokol.c /LD /MD /DLL /Fe:sokol_dll_windows_x64_gl_release.dll /link /INCREMENTAL:NO
+
+del sokol.obj

thirdparty/sokol/build_shaders_macos.sh

@@ -0,0 +1,30 @@
+set -e
+
+sokol_tools_root=../sokol-tools-bin
+
+build_shader() {
+    name=$1
+    dir=examples/$name
+    if [[ $(arch) =~ "arm64" ]]
+    then
+        shdc=$sokol_tools_root/bin/osx_arm64/sokol-shdc
+    else
+        shdc=$sokol_tools_root/bin/osx/sokol-shdc
+    fi
+    echo $dir
+    $shdc -i $dir/shader.glsl -o $dir/shader.odin -l glsl430:metal_macos:hlsl5 -f sokol_odin
+}
+
+build_shader blend
+build_shader bufferoffsets
+build_shader cube
+build_shader instancing
+build_shader instancing-compute
+build_shader mrt
+build_shader noninterleaved
+build_shader offscreen
+build_shader quad
+build_shader shapes
+build_shader texcube
+build_shader triangle
+build_shader vertexpull

thirdparty/sokol/c/sokol.c

@@ -0,0 +1,16 @@
+#if defined(IMPL)
+#define SOKOL_IMPL
+#endif
+
+#include "sokol_defines.h"
+
+#include "sokol_audio.h"
+#include "sokol_app.h"
+#include "sokol_gfx.h"
+#include "sokol_log.h"
+#include "sokol_time.h"
+#include "sokol_glue.h"
+
+#include "sokol_gl.h"
+#include "sokol_shape.h"
+#include "sokol_debugtext.h"

thirdparty/sokol/c/sokol_app.c

@@ -0,0 +1,5 @@
+#if defined(IMPL)
+#define SOKOL_APP_IMPL
+#endif
+#include "sokol_defines.h"
+#include "sokol_app.h"

thirdparty/sokol/c/sokol_audio.c

@@ -0,0 +1,6 @@
+#if defined(IMPL)
+#define SOKOL_AUDIO_IMPL
+#endif
+#include "sokol_defines.h"
+#include "sokol_audio.h"
+

thirdparty/sokol/c/sokol_debugtext.c

@@ -0,0 +1,7 @@
+#if defined(IMPL)
+#define SOKOL_DEBUGTEXT_IMPL
+#endif
+#include "sokol_defines.h"
+#include "sokol_gfx.h"
+#include "sokol_debugtext.h"
+

thirdparty/sokol/c/sokol_defines.h

@@ -0,0 +1,8 @@
+#define SOKOL_NO_ENTRY
+#if defined(_WIN32)
+    #define SOKOL_WIN32_FORCE_MAIN
+#endif
+// FIXME: macOS Zig HACK without this, some C stdlib headers throw errors
+#if defined(__APPLE__)
+#include <TargetConditionals.h>
+#endif

thirdparty/sokol/c/sokol_gfx.c

@@ -0,0 +1,5 @@
+#if defined(IMPL)
+#define SOKOL_GFX_IMPL
+#endif
+#include "sokol_defines.h"
+#include "sokol_gfx.h"

thirdparty/sokol/c/sokol_gl.c

@@ -0,0 +1,6 @@
+#if defined(IMPL)
+#define SOKOL_GL_IMPL
+#endif
+#include "sokol_defines.h"
+#include "sokol_gfx.h"
+#include "sokol_gl.h"

thirdparty/sokol/c/sokol_glue.c

@@ -0,0 +1,7 @@
+#if defined(IMPL)
+#define SOKOL_GLUE_IMPL
+#endif
+#include "sokol_defines.h"
+#include "sokol_app.h"
+#include "sokol_gfx.h"
+#include "sokol_glue.h"

thirdparty/sokol/c/sokol_glue.h

@@ -0,0 +1,162 @@
+#if defined(SOKOL_IMPL) && !defined(SOKOL_GLUE_IMPL)
+#define SOKOL_GLUE_IMPL
+#endif
+#ifndef SOKOL_GLUE_INCLUDED
+/*
+    sokol_glue.h -- glue helper functions for sokol headers
+
+    Project URL: https://github.com/floooh/sokol
+
+    Do this:
+        #define SOKOL_IMPL or
+        #define SOKOL_GLUE_IMPL
+    before you include this file in *one* C or C++ file to create the
+    implementation.
+
+    ...optionally provide the following macros to override defaults:
+
+    SOKOL_ASSERT(c)     - your own assert macro (default: assert(c))
+    SOKOL_GLUE_API_DECL - public function declaration prefix (default: extern)
+    SOKOL_API_DECL      - same as SOKOL_GLUE_API_DECL
+    SOKOL_API_IMPL      - public function implementation prefix (default: -)
+
+    If sokol_glue.h is compiled as a DLL, define the following before
+    including the declaration or implementation:
+
+    SOKOL_DLL
+
+    On Windows, SOKOL_DLL will define SOKOL_GLUE_API_DECL as __declspec(dllexport)
+    or __declspec(dllimport) as needed.
+
+    OVERVIEW
+    ========
+    sokol_glue.h provides glue helper functions between sokol_gfx.h and sokol_app.h,
+    so that sokol_gfx.h doesn't need to depend on sokol_app.h but can be
+    used with different window system glue libraries.
+
+    PROVIDED FUNCTIONS
+    ==================
+
+    sg_environment sglue_environment(void)
+
+        Returns an sg_environment struct initialized by calling sokol_app.h
+        functions. Use this in the sg_setup() call like this:
+
+        sg_setup(&(sg_desc){
+            .environment = sglue_environment(),
+            ...
+        });
+
+    sg_swapchain sglue_swapchain(void)
+
+        Returns an sg_swapchain struct initialized by calling sokol_app.h
+        functions. Use this in sg_begin_pass() for a 'swapchain pass' like
+        this:
+
+        sg_begin_pass(&(sg_pass){ .swapchain = sglue_swapchain(), ... });
+
+    LICENSE
+    =======
+    zlib/libpng license
+
+    Copyright (c) 2018 Andre Weissflog
+
+    This software is provided 'as-is', without any express or implied warranty.
+    In no event will the authors be held liable for any damages arising from the
+    use of this software.
+
+    Permission is granted to anyone to use this software for any purpose,
+    including commercial applications, and to alter it and redistribute it
+    freely, subject to the following restrictions:
+
+        1. The origin of this software must not be misrepresented; you must not
+        claim that you wrote the original software. If you use this software in a
+        product, an acknowledgment in the product documentation would be
+        appreciated but is not required.
+
+        2. Altered source versions must be plainly marked as such, and must not
+        be misrepresented as being the original software.
+
+        3. This notice may not be removed or altered from any source
+        distribution.
+*/
+#define SOKOL_GLUE_INCLUDED
+
+#if defined(SOKOL_API_DECL) && !defined(SOKOL_GLUE_API_DECL)
+#define SOKOL_GLUE_API_DECL SOKOL_API_DECL
+#endif
+#ifndef SOKOL_GLUE_API_DECL
+#if defined(_WIN32) && defined(SOKOL_DLL) && defined(SOKOL_GLUE_IMPL)
+#define SOKOL_GLUE_API_DECL __declspec(dllexport)
+#elif defined(_WIN32) && defined(SOKOL_DLL)
+#define SOKOL_GLUE_API_DECL __declspec(dllimport)
+#else
+#define SOKOL_GLUE_API_DECL extern
+#endif
+#endif
+
+#ifndef SOKOL_GFX_INCLUDED
+#error "Please include sokol_gfx.h before sokol_glue.h"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+SOKOL_GLUE_API_DECL sg_environment sglue_environment(void);
+SOKOL_GLUE_API_DECL sg_swapchain sglue_swapchain(void);
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+#endif /* SOKOL_GLUE_INCLUDED */
+
+/*-- IMPLEMENTATION ----------------------------------------------------------*/
+#ifdef SOKOL_GLUE_IMPL
+#define SOKOL_GLUE_IMPL_INCLUDED (1)
+#include <string.h> /* memset */
+
+#ifndef SOKOL_APP_INCLUDED
+#error "Please include sokol_app.h before the sokol_glue.h implementation"
+#endif
+
+#ifndef SOKOL_API_IMPL
+#define SOKOL_API_IMPL
+#endif
+
+
+SOKOL_API_IMPL sg_environment sglue_environment(void) {
+    sg_environment env;
+    memset(&env, 0, sizeof(env));
+    env.defaults.color_format = (sg_pixel_format) sapp_color_format();
+    env.defaults.depth_format = (sg_pixel_format) sapp_depth_format();
+    env.defaults.sample_count = sapp_sample_count();
+    env.metal.device = sapp_metal_get_device();
+    env.d3d11.device = sapp_d3d11_get_device();
+    env.d3d11.device_context = sapp_d3d11_get_device_context();
+    env.wgpu.device = sapp_wgpu_get_device();
+    return env;
+}
+
+SOKOL_API_IMPL sg_swapchain sglue_swapchain(void) {
+    sg_swapchain swapchain;
+    memset(&swapchain, 0, sizeof(swapchain));
+    swapchain.width = sapp_width();
+    swapchain.height = sapp_height();
+    swapchain.sample_count = sapp_sample_count();
+    swapchain.color_format = (sg_pixel_format)sapp_color_format();
+    swapchain.depth_format = (sg_pixel_format)sapp_depth_format();
+    swapchain.metal.current_drawable = sapp_metal_get_current_drawable();
+    swapchain.metal.depth_stencil_texture = sapp_metal_get_depth_stencil_texture();
+    swapchain.metal.msaa_color_texture = sapp_metal_get_msaa_color_texture();
+    swapchain.d3d11.render_view = sapp_d3d11_get_render_view();
+    swapchain.d3d11.resolve_view = sapp_d3d11_get_resolve_view();
+    swapchain.d3d11.depth_stencil_view = sapp_d3d11_get_depth_stencil_view();
+    swapchain.wgpu.render_view = sapp_wgpu_get_render_view();
+    swapchain.wgpu.resolve_view = sapp_wgpu_get_resolve_view();
+    swapchain.wgpu.depth_stencil_view = sapp_wgpu_get_depth_stencil_view();
+    swapchain.gl.framebuffer = sapp_gl_get_framebuffer();
+    return swapchain;
+}
+
+#endif /* SOKOL_GLUE_IMPL */

thirdparty/sokol/c/sokol_log.c

@@ -0,0 +1,5 @@
+#if defined(IMPL)
+#define SOKOL_LOG_IMPL
+#endif
+#include "sokol_defines.h"
+#include "sokol_log.h"

thirdparty/sokol/c/sokol_log.h

@@ -0,0 +1,334 @@
+#if defined(SOKOL_IMPL) && !defined(SOKOL_LOG_IMPL)
+#define SOKOL_LOG_IMPL
+#endif
+#ifndef SOKOL_LOG_INCLUDED
+/*
+    sokol_log.h -- common logging callback for sokol headers
+
+    Project URL: https://github.com/floooh/sokol
+
+    Example code: https://github.com/floooh/sokol-samples
+
+    Do this:
+        #define SOKOL_IMPL or
+        #define SOKOL_LOG_IMPL
+    before you include this file in *one* C or C++ file to create the
+    implementation.
+
+    Optionally provide the following defines when building the implementation:
+
+    SOKOL_ASSERT(c)             - your own assert macro (default: assert(c))
+    SOKOL_UNREACHABLE()         - a guard macro for unreachable code (default: assert(false))
+    SOKOL_LOG_API_DECL          - public function declaration prefix (default: extern)
+    SOKOL_API_DECL              - same as SOKOL_GFX_API_DECL
+    SOKOL_API_IMPL              - public function implementation prefix (default: -)
+
+    Optionally define the following for verbose output:
+
+    SOKOL_DEBUG         - by default this is defined if _DEBUG is defined
+
+
+    OVERVIEW
+    ========
+    sokol_log.h provides a default logging callback for other sokol headers.
+
+    To use the default log callback, just include sokol_log.h and provide
+    a function pointer to the 'slog_func' function when setting up the
+    sokol library:
+
+    For instance with sokol_audio.h:
+
+        #include "sokol_log.h"
+        ...
+        saudio_setup(&(saudio_desc){ .logger.func = slog_func });
+
+    Logging output goes to stderr and/or a platform specific logging subsystem
+    (which means that in some scenarios you might see logging messages duplicated):
+
+        - Windows: stderr + OutputDebugStringA()
+        - macOS/iOS/Linux: stderr + syslog()
+        - Emscripten: console.info()/warn()/error()
+        - Android: __android_log_write()
+
+    On Windows with sokol_app.h also note the runtime config items to make
+    stdout/stderr output visible on the console for WinMain() applications
+    via sapp_desc.win32_console_attach or sapp_desc.win32_console_create,
+    however when running in a debugger on Windows, the logging output should
+    show up on the debug output UI panel.
+
+    In debug mode, a log message might look like this:
+
+        [sspine][error][id:12] /Users/floh/projects/sokol/util/sokol_spine.h:3472:0:
+            SKELETON_DESC_NO_ATLAS: no atlas object provided in sspine_skeleton_desc.atlas
+
+    The source path and line number is formatted like compiler errors, in some IDEs (like VSCode)
+    such error messages are clickable.
+
+    In release mode, logging is less verbose as to not bloat the executable with string data, but you still get
+    enough information to identify the type and location of an error:
+
+        [sspine][error][id:12][line:3472]
+
+    RULES FOR WRITING YOUR OWN LOGGING FUNCTION
+    ===========================================
+    - must be re-entrant because it might be called from different threads
+    - must treat **all** provided string pointers as optional (can be null)
+    - don't store the string pointers, copy the string data instead
+    - must not return for log level panic
+
+    LICENSE
+    =======
+    zlib/libpng license
+
+    Copyright (c) 2023 Andre Weissflog
+
+    This software is provided 'as-is', without any express or implied warranty.
+    In no event will the authors be held liable for any damages arising from the
+    use of this software.
+
+    Permission is granted to anyone to use this software for any purpose,
+    including commercial applications, and to alter it and redistribute it
+    freely, subject to the following restrictions:
+
+        1. The origin of this software must not be misrepresented; you must not
+        claim that you wrote the original software. If you use this software in a
+        product, an acknowledgment in the product documentation would be
+        appreciated but is not required.
+
+        2. Altered source versions must be plainly marked as such, and must not
+        be misrepresented as being the original software.
+
+        3. This notice may not be removed or altered from any source
+        distribution.
+*/
+#define SOKOL_LOG_INCLUDED (1)
+#include <stdint.h>
+
+#if defined(SOKOL_API_DECL) && !defined(SOKOL_LOG_API_DECL)
+#define SOKOL_LOG_API_DECL SOKOL_API_DECL
+#endif
+#ifndef SOKOL_LOG_API_DECL
+#if defined(_WIN32) && defined(SOKOL_DLL) && defined(SOKOL_LOG_IMPL)
+#define SOKOL_LOG_API_DECL __declspec(dllexport)
+#elif defined(_WIN32) && defined(SOKOL_DLL)
+#define SOKOL_LOG_API_DECL __declspec(dllimport)
+#else
+#define SOKOL_LOG_API_DECL extern
+#endif
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+    Plug this function into the 'logger.func' struct item when initializing any of the sokol
+    headers. For instance for sokol_audio.h it would look like this:
+
+    saudio_setup(&(saudio_desc){
+        .logger = {
+            .func = slog_func
+        }
+    });
+*/
+SOKOL_LOG_API_DECL void slog_func(const char* tag, uint32_t log_level, uint32_t log_item, const char* message, uint32_t line_nr, const char* filename, void* user_data);
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+#endif // SOKOL_LOG_INCLUDED
+
+// ██ ███    ███ ██████  ██      ███████ ███    ███ ███████ ███    ██ ████████  █████  ████████ ██  ██████  ███    ██
+// ██ ████  ████ ██   ██ ██      ██      ████  ████ ██      ████   ██    ██    ██   ██    ██    ██ ██    ██ ████   ██
+// ██ ██ ████ ██ ██████  ██      █████   ██ ████ ██ █████   ██ ██  ██    ██    ███████    ██    ██ ██    ██ ██ ██  ██
+// ██ ██  ██  ██ ██      ██      ██      ██  ██  ██ ██      ██  ██ ██    ██    ██   ██    ██    ██ ██    ██ ██  ██ ██
+// ██ ██      ██ ██      ███████ ███████ ██      ██ ███████ ██   ████    ██    ██   ██    ██    ██  ██████  ██   ████
+//
+// >>implementation
+#ifdef SOKOL_LOG_IMPL
+#define SOKOL_LOG_IMPL_INCLUDED (1)
+
+#ifndef SOKOL_API_IMPL
+    #define SOKOL_API_IMPL
+#endif
+#ifndef SOKOL_DEBUG
+    #ifndef NDEBUG
+        #define SOKOL_DEBUG
+    #endif
+#endif
+#ifndef SOKOL_ASSERT
+    #include <assert.h>
+    #define SOKOL_ASSERT(c) assert(c)
+#endif
+
+#ifndef _SOKOL_PRIVATE
+    #if defined(__GNUC__) || defined(__clang__)
+        #define _SOKOL_PRIVATE __attribute__((unused)) static
+    #else
+        #define _SOKOL_PRIVATE static
+    #endif
+#endif
+
+#ifndef _SOKOL_UNUSED
+    #define _SOKOL_UNUSED(x) (void)(x)
+#endif
+
+// platform detection
+#if defined(__APPLE__)
+    #define _SLOG_APPLE (1)
+#elif defined(__EMSCRIPTEN__)
+    #define _SLOG_EMSCRIPTEN (1)
+#elif defined(_WIN32)
+    #define _SLOG_WINDOWS (1)
+#elif defined(__ANDROID__)
+    #define _SLOG_ANDROID (1)
+#elif defined(__linux__) || defined(__unix__)
+    #define _SLOG_LINUX (1)
+#else
+#error "sokol_log.h: unknown platform"
+#endif
+
+#include <stdlib.h> // abort
+#include <stdio.h>  // fputs
+#include <stddef.h> // size_t
+
+#if defined(_SLOG_EMSCRIPTEN)
+#include <emscripten/emscripten.h>
+#elif defined(_SLOG_WINDOWS)
+#ifndef WIN32_LEAN_AND_MEAN
+    #define WIN32_LEAN_AND_MEAN
+#endif
+#ifndef NOMINMAX
+    #define NOMINMAX
+#endif
+#include <windows.h>
+#elif defined(_SLOG_ANDROID)
+#include <android/log.h>
+#elif defined(_SLOG_LINUX) || defined(_SLOG_APPLE)
+#include <syslog.h>
+#endif
+
+// size of line buffer (on stack!) in bytes including terminating zero
+#define _SLOG_LINE_LENGTH (512)
+
+_SOKOL_PRIVATE char* _slog_append(const char* str, char* dst, char* end) {
+    if (str) {
+        char c;
+        while (((c = *str++) != 0) && (dst < (end - 1))) {
+            *dst++ = c;
+        }
+    }
+    *dst = 0;
+    return dst;
+}
+
+_SOKOL_PRIVATE char* _slog_itoa(uint32_t x, char* buf, size_t buf_size) {
+    const size_t max_digits_and_null = 11;
+    if (buf_size < max_digits_and_null) {
+        return 0;
+    }
+    char* p = buf + max_digits_and_null;
+    *--p = 0;
+    do {
+        *--p = '0' + (x % 10);
+        x /= 10;
+    } while (x != 0);
+    return p;
+}
+
+#if defined(_SLOG_EMSCRIPTEN)
+EM_JS(void, slog_js_log, (uint32_t level, const char* c_str), {
+    const str = UTF8ToString(c_str);
+    switch (level) {
+        case 0: console.error(str); break;
+        case 1: console.error(str); break;
+        case 2: console.warn(str); break;
+        default: console.info(str); break;
+    }
+})
+#endif
+
+SOKOL_API_IMPL void slog_func(const char* tag, uint32_t log_level, uint32_t log_item, const char* message, uint32_t line_nr, const char* filename, void* user_data) {
+    _SOKOL_UNUSED(user_data);
+
+    const char* log_level_str;
+    switch (log_level) {
+        case 0: log_level_str = "panic"; break;
+        case 1: log_level_str = "error"; break;
+        case 2: log_level_str = "warning"; break;
+        default: log_level_str = "info"; break;
+    }
+
+    // build log output line
+    char line_buf[_SLOG_LINE_LENGTH];
+    char* str = line_buf;
+    char* end = line_buf + sizeof(line_buf);
+    char num_buf[32];
+    if (tag) {
+        str = _slog_append("[", str, end);
+        str = _slog_append(tag, str, end);
+        str = _slog_append("]", str, end);
+    }
+    str = _slog_append("[", str, end);
+    str = _slog_append(log_level_str, str, end);
+    str = _slog_append("]", str, end);
+    str = _slog_append("[id:", str, end);
+    str = _slog_append(_slog_itoa(log_item, num_buf, sizeof(num_buf)), str, end);
+    str = _slog_append("]", str, end);
+    // if a filename is provided, build a clickable log message that's compatible with compiler error messages
+    if (filename) {
+        str = _slog_append(" ", str, end);
+        #if defined(_MSC_VER)
+            // MSVC compiler error format
+            str = _slog_append(filename, str, end);
+            str = _slog_append("(", str, end);
+            str = _slog_append(_slog_itoa(line_nr, num_buf, sizeof(num_buf)), str, end);
+            str = _slog_append("): ", str, end);
+        #else
+            // gcc/clang compiler error format
+            str = _slog_append(filename, str, end);
+            str = _slog_append(":", str, end);
+            str = _slog_append(_slog_itoa(line_nr, num_buf, sizeof(num_buf)), str, end);
+            str = _slog_append(":0: ", str, end);
+        #endif
+    }
+    else {
+        str = _slog_append("[line:", str, end);
+        str = _slog_append(_slog_itoa(line_nr, num_buf, sizeof(num_buf)), str, end);
+        str = _slog_append("] ", str, end);
+    }
+    if (message) {
+        str = _slog_append("\n\t", str, end);
+        str = _slog_append(message, str, end);
+    }
+    str = _slog_append("\n\n", str, end);
+    if (0 == log_level) {
+        str = _slog_append("ABORTING because of [panic]\n", str, end);
+        (void)str;
+    }
+
+    // print to stderr?
+    #if defined(_SLOG_LINUX) || defined(_SLOG_WINDOWS) || defined(_SLOG_APPLE)
+        fputs(line_buf, stderr);
+    #endif
+
+    // platform specific logging calls
+    #if defined(_SLOG_WINDOWS)
+        OutputDebugStringA(line_buf);
+    #elif defined(_SLOG_ANDROID)
+        int prio;
+        switch (log_level) {
+            case 0: prio = ANDROID_LOG_FATAL; break;
+            case 1: prio = ANDROID_LOG_ERROR; break;
+            case 2: prio = ANDROID_LOG_WARN; break;
+            default: prio = ANDROID_LOG_INFO; break;
+        }
+        __android_log_write(prio, "SOKOL", line_buf);
+    #elif defined(_SLOG_EMSCRIPTEN)
+        slog_js_log(log_level, line_buf);
+    #endif
+    if (0 == log_level) {
+        abort();
+    }
+}
+#endif // SOKOL_LOG_IMPL

thirdparty/sokol/c/sokol_shape.c

@@ -0,0 +1,6 @@
+#if defined(IMPL)
+#define SOKOL_SHAPE_IMPL
+#endif
+#include "sokol_defines.h"
+#include "sokol_gfx.h"
+#include "sokol_shape.h"

thirdparty/sokol/c/sokol_time.c

@@ -0,0 +1,5 @@
+#if defined(IMPL)
+#define SOKOL_TIME_IMPL
+#endif
+#include "sokol_defines.h"
+#include "sokol_time.h"

thirdparty/sokol/c/sokol_time.h

@@ -0,0 +1,319 @@
+#if defined(SOKOL_IMPL) && !defined(SOKOL_TIME_IMPL)
+#define SOKOL_TIME_IMPL
+#endif
+#ifndef SOKOL_TIME_INCLUDED
+/*
+    sokol_time.h    -- simple cross-platform time measurement
+
+    Project URL: https://github.com/floooh/sokol
+
+    Do this:
+        #define SOKOL_IMPL or
+        #define SOKOL_TIME_IMPL
+    before you include this file in *one* C or C++ file to create the
+    implementation.
+
+    Optionally provide the following defines with your own implementations:
+    SOKOL_ASSERT(c)     - your own assert macro (default: assert(c))
+    SOKOL_TIME_API_DECL - public function declaration prefix (default: extern)
+    SOKOL_API_DECL      - same as SOKOL_TIME_API_DECL
+    SOKOL_API_IMPL      - public function implementation prefix (default: -)
+
+    If sokol_time.h is compiled as a DLL, define the following before
+    including the declaration or implementation:
+
+    SOKOL_DLL
+
+    On Windows, SOKOL_DLL will define SOKOL_TIME_API_DECL as __declspec(dllexport)
+    or __declspec(dllimport) as needed.
+
+    void stm_setup();
+        Call once before any other functions to initialize sokol_time
+        (this calls for instance QueryPerformanceFrequency on Windows)
+
+    uint64_t stm_now();
+        Get current point in time in unspecified 'ticks'. The value that
+        is returned has no relation to the 'wall-clock' time and is
+        not in a specific time unit, it is only useful to compute
+        time differences.
+
+    uint64_t stm_diff(uint64_t new, uint64_t old);
+        Computes the time difference between new and old. This will always
+        return a positive, non-zero value.
+
+    uint64_t stm_since(uint64_t start);
+        Takes the current time, and returns the elapsed time since start
+        (this is a shortcut for "stm_diff(stm_now(), start)")
+
+    uint64_t stm_laptime(uint64_t* last_time);
+        This is useful for measuring frame time and other recurring
+        events. It takes the current time, returns the time difference
+        to the value in last_time, and stores the current time in
+        last_time for the next call. If the value in last_time is 0,
+        the return value will be zero (this usually happens on the
+        very first call).
+
+    uint64_t stm_round_to_common_refresh_rate(uint64_t duration)
+        This oddly named function takes a measured frame time and
+        returns the closest "nearby" common display refresh rate frame duration
+        in ticks. If the input duration isn't close to any common display
+        refresh rate, the input duration will be returned unchanged as a fallback.
+        The main purpose of this function is to remove jitter/inaccuracies from
+        measured frame times, and instead use the display refresh rate as
+        frame duration.
+        NOTE: for more robust frame timing, consider using the
+        sokol_app.h function sapp_frame_duration()
+
+    Use the following functions to convert a duration in ticks into
+    useful time units:
+
+    double stm_sec(uint64_t ticks);
+    double stm_ms(uint64_t ticks);
+    double stm_us(uint64_t ticks);
+    double stm_ns(uint64_t ticks);
+        Converts a tick value into seconds, milliseconds, microseconds
+        or nanoseconds. Note that not all platforms will have nanosecond
+        or even microsecond precision.
+
+    Uses the following time measurement functions under the hood:
+
+    Windows:        QueryPerformanceFrequency() / QueryPerformanceCounter()
+    MacOS/iOS:      mach_absolute_time()
+    emscripten:     emscripten_get_now()
+    Linux+others:   clock_gettime(CLOCK_MONOTONIC)
+
+    zlib/libpng license
+
+    Copyright (c) 2018 Andre Weissflog
+
+    This software is provided 'as-is', without any express or implied warranty.
+    In no event will the authors be held liable for any damages arising from the
+    use of this software.
+
+    Permission is granted to anyone to use this software for any purpose,
+    including commercial applications, and to alter it and redistribute it
+    freely, subject to the following restrictions:
+
+        1. The origin of this software must not be misrepresented; you must not
+        claim that you wrote the original software. If you use this software in a
+        product, an acknowledgment in the product documentation would be
+        appreciated but is not required.
+
+        2. Altered source versions must be plainly marked as such, and must not
+        be misrepresented as being the original software.
+
+        3. This notice may not be removed or altered from any source
+        distribution.
+*/
+#define SOKOL_TIME_INCLUDED (1)
+#include <stdint.h>
+
+#if defined(SOKOL_API_DECL) && !defined(SOKOL_TIME_API_DECL)
+#define SOKOL_TIME_API_DECL SOKOL_API_DECL
+#endif
+#ifndef SOKOL_TIME_API_DECL
+#if defined(_WIN32) && defined(SOKOL_DLL) && defined(SOKOL_TIME_IMPL)
+#define SOKOL_TIME_API_DECL __declspec(dllexport)
+#elif defined(_WIN32) && defined(SOKOL_DLL)
+#define SOKOL_TIME_API_DECL __declspec(dllimport)
+#else
+#define SOKOL_TIME_API_DECL extern
+#endif
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+SOKOL_TIME_API_DECL void stm_setup(void);
+SOKOL_TIME_API_DECL uint64_t stm_now(void);
+SOKOL_TIME_API_DECL uint64_t stm_diff(uint64_t new_ticks, uint64_t old_ticks);
+SOKOL_TIME_API_DECL uint64_t stm_since(uint64_t start_ticks);
+SOKOL_TIME_API_DECL uint64_t stm_laptime(uint64_t* last_time);
+SOKOL_TIME_API_DECL uint64_t stm_round_to_common_refresh_rate(uint64_t frame_ticks);
+SOKOL_TIME_API_DECL double stm_sec(uint64_t ticks);
+SOKOL_TIME_API_DECL double stm_ms(uint64_t ticks);
+SOKOL_TIME_API_DECL double stm_us(uint64_t ticks);
+SOKOL_TIME_API_DECL double stm_ns(uint64_t ticks);
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+#endif // SOKOL_TIME_INCLUDED
+
+/*-- IMPLEMENTATION ----------------------------------------------------------*/
+#ifdef SOKOL_TIME_IMPL
+#define SOKOL_TIME_IMPL_INCLUDED (1)
+#include <string.h> /* memset */
+
+#ifndef SOKOL_API_IMPL
+    #define SOKOL_API_IMPL
+#endif
+#ifndef SOKOL_ASSERT
+    #include <assert.h>
+    #define SOKOL_ASSERT(c) assert(c)
+#endif
+#ifndef _SOKOL_PRIVATE
+    #if defined(__GNUC__) || defined(__clang__)
+        #define _SOKOL_PRIVATE __attribute__((unused)) static
+    #else
+        #define _SOKOL_PRIVATE static
+    #endif
+#endif
+
+#if defined(_WIN32)
+#ifndef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN
+#endif
+#include <windows.h>
+typedef struct {
+    uint32_t initialized;
+    LARGE_INTEGER freq;
+    LARGE_INTEGER start;
+} _stm_state_t;
+#elif defined(__APPLE__) && defined(__MACH__)
+#include <mach/mach_time.h>
+typedef struct {
+    uint32_t initialized;
+    mach_timebase_info_data_t timebase;
+    uint64_t start;
+} _stm_state_t;
+#elif defined(__EMSCRIPTEN__)
+#include <emscripten/emscripten.h>
+typedef struct {
+    uint32_t initialized;
+    double start;
+} _stm_state_t;
+#else /* anything else, this will need more care for non-Linux platforms */
+#ifdef ESP8266
+// On the ESP8266, clock_gettime ignores the first argument and CLOCK_MONOTONIC isn't defined
+#define CLOCK_MONOTONIC 0
+#endif
+#include <time.h>
+typedef struct {
+    uint32_t initialized;
+    uint64_t start;
+} _stm_state_t;
+#endif
+static _stm_state_t _stm;
+
+/* prevent 64-bit overflow when computing relative timestamp
+    see https://gist.github.com/jspohr/3dc4f00033d79ec5bdaf67bc46c813e3
+*/
+#if defined(_WIN32) || (defined(__APPLE__) && defined(__MACH__))
+_SOKOL_PRIVATE int64_t _stm_int64_muldiv(int64_t value, int64_t numer, int64_t denom) {
+    int64_t q = value / denom;
+    int64_t r = value % denom;
+    return q * numer + r * numer / denom;
+}
+#endif
+
+SOKOL_API_IMPL void stm_setup(void) {
+    memset(&_stm, 0, sizeof(_stm));
+    _stm.initialized = 0xABCDABCD;
+    #if defined(_WIN32)
+        QueryPerformanceFrequency(&_stm.freq);
+        QueryPerformanceCounter(&_stm.start);
+    #elif defined(__APPLE__) && defined(__MACH__)
+        mach_timebase_info(&_stm.timebase);
+        _stm.start = mach_absolute_time();
+    #elif defined(__EMSCRIPTEN__)
+        _stm.start = emscripten_get_now();
+    #else
+        struct timespec ts;
+        clock_gettime(CLOCK_MONOTONIC, &ts);
+        _stm.start = (uint64_t)ts.tv_sec*1000000000 + (uint64_t)ts.tv_nsec;
+    #endif
+}
+
+SOKOL_API_IMPL uint64_t stm_now(void) {
+    SOKOL_ASSERT(_stm.initialized == 0xABCDABCD);
+    uint64_t now;
+    #if defined(_WIN32)
+        LARGE_INTEGER qpc_t;
+        QueryPerformanceCounter(&qpc_t);
+        now = (uint64_t) _stm_int64_muldiv(qpc_t.QuadPart - _stm.start.QuadPart, 1000000000, _stm.freq.QuadPart);
+    #elif defined(__APPLE__) && defined(__MACH__)
+        const uint64_t mach_now = mach_absolute_time() - _stm.start;
+        now = (uint64_t) _stm_int64_muldiv((int64_t)mach_now, (int64_t)_stm.timebase.numer, (int64_t)_stm.timebase.denom);
+    #elif defined(__EMSCRIPTEN__)
+        double js_now = emscripten_get_now() - _stm.start;
+        now = (uint64_t) (js_now * 1000000.0);
+    #else
+        struct timespec ts;
+        clock_gettime(CLOCK_MONOTONIC, &ts);
+        now = ((uint64_t)ts.tv_sec*1000000000 + (uint64_t)ts.tv_nsec) - _stm.start;
+    #endif
+    return now;
+}
+
+SOKOL_API_IMPL uint64_t stm_diff(uint64_t new_ticks, uint64_t old_ticks) {
+    if (new_ticks > old_ticks) {
+        return new_ticks - old_ticks;
+    }
+    else {
+        return 1;
+    }
+}
+
+SOKOL_API_IMPL uint64_t stm_since(uint64_t start_ticks) {
+    return stm_diff(stm_now(), start_ticks);
+}
+
+SOKOL_API_IMPL uint64_t stm_laptime(uint64_t* last_time) {
+    SOKOL_ASSERT(last_time);
+    uint64_t dt = 0;
+    uint64_t now = stm_now();
+    if (0 != *last_time) {
+        dt = stm_diff(now, *last_time);
+    }
+    *last_time = now;
+    return dt;
+}
+
+// first number is frame duration in ns, second number is tolerance in ns,
+// the resulting min/max values must not overlap!
+static const uint64_t _stm_refresh_rates[][2] = {
+    { 16666667, 1000000 },  //  60 Hz: 16.6667 +- 1ms
+    { 13888889,  250000 },  //  72 Hz: 13.8889 +- 0.25ms
+    { 13333333,  250000 },  //  75 Hz: 13.3333 +- 0.25ms
+    { 11764706,  250000 },  //  85 Hz: 11.7647 +- 0.25
+    { 11111111,  250000 },  //  90 Hz: 11.1111 +- 0.25ms
+    { 10000000,  500000 },  // 100 Hz: 10.0000 +- 0.5ms
+    {  8333333,  500000 },  // 120 Hz:  8.3333 +- 0.5ms
+    {  6944445,  500000 },  // 144 Hz:  6.9445 +- 0.5ms
+    {  4166667, 1000000 },  // 240 Hz:  4.1666 +- 1ms
+    {        0,       0 },  // keep the last element always at zero
+};
+
+SOKOL_API_IMPL uint64_t stm_round_to_common_refresh_rate(uint64_t ticks) {
+    uint64_t ns;
+    int i = 0;
+    while (0 != (ns = _stm_refresh_rates[i][0])) {
+        uint64_t tol = _stm_refresh_rates[i][1];
+        if ((ticks > (ns - tol)) && (ticks < (ns + tol))) {
+            return ns;
+        }
+        i++;
+    }
+    // fallthrough: didn't fit into any buckets
+    return ticks;
+}
+
+SOKOL_API_IMPL double stm_sec(uint64_t ticks) {
+    return (double)ticks / 1000000000.0;
+}
+
+SOKOL_API_IMPL double stm_ms(uint64_t ticks) {
+    return (double)ticks / 1000000.0;
+}
+
+SOKOL_API_IMPL double stm_us(uint64_t ticks) {
+    return (double)ticks / 1000.0;
+}
+
+SOKOL_API_IMPL double stm_ns(uint64_t ticks) {
+    return (double)ticks;
+}
+#endif /* SOKOL_TIME_IMPL */
+

thirdparty/sokol/debugtext/debugtext.odin

@@ -0,0 +1,740 @@
+// machine generated, do not edit
+
+package sokol_debugtext
+
+/*
+
+    sokol_debugtext.h   - simple ASCII debug text rendering on top of sokol_gfx.h
+
+    Project URL: https://github.com/floooh/sokol
+
+    Do this:
+        #define SOKOL_IMPL or
+        #define SOKOL_DEBUGTEXT_IMPL
+    before you include this file in *one* C or C++ file to create the
+    implementation.
+
+    The following defines are used by the implementation to select the
+    platform-specific embedded shader code (these are the same defines as
+    used by sokol_gfx.h and sokol_app.h):
+
+    SOKOL_GLCORE
+    SOKOL_GLES3
+    SOKOL_D3D11
+    SOKOL_METAL
+    SOKOL_WGPU
+
+    ...optionally provide the following macros to override defaults:
+
+    SOKOL_VSNPRINTF     - the function name of an alternative vsnprintf() function (default: vsnprintf)
+    SOKOL_ASSERT(c)     - your own assert macro (default: assert(c))
+    SOKOL_DEBUGTEXT_API_DECL    - public function declaration prefix (default: extern)
+    SOKOL_API_DECL      - same as SOKOL_DEBUGTEXT_API_DECL
+    SOKOL_API_IMPL      - public function implementation prefix (default: -)
+    SOKOL_UNREACHABLE() - a guard macro for unreachable code (default: assert(false))
+
+    If sokol_debugtext.h is compiled as a DLL, define the following before
+    including the declaration or implementation:
+
+    SOKOL_DLL
+
+    On Windows, SOKOL_DLL will define SOKOL_DEBUGTEXT_API_DECL as __declspec(dllexport)
+    or __declspec(dllimport) as needed.
+
+    Include the following headers before including sokol_debugtext.h:
+
+        sokol_gfx.h
+
+    FEATURES AND CONCEPTS
+    =====================
+    - renders 8-bit ASCII text as fixed-size 8x8 pixel characters
+    - comes with 6 embedded 8-bit home computer fonts (each taking up 2 KBytes)
+    - easily plug in your own fonts
+    - create multiple contexts for rendering text in different layers or render passes
+
+    STEP BY STEP
+    ============
+
+    --- to initialize sokol-debugtext, call sdtx_setup() *after* initializing
+        sokol-gfx:
+
+            sdtx_setup(&(sdtx_desc_t){ ... });
+
+        To see any warnings and errors, you should always install a logging callback.
+        The easiest way is via sokol_log.h:
+
+            #include "sokol_log.h"
+
+            sdtx_setup(&(sdtx_desc_t){
+                .logger.func = slog_func,
+            });
+
+    --- configure sokol-debugtext by populating the sdtx_desc_t struct:
+
+        .context_pool_size (default: 8)
+            The max number of text contexts that can be created.
+
+        .printf_buf_size (default: 4096)
+            The size of the internal text formatting buffer used by
+            sdtx_printf() and sdtx_vprintf().
+
+        .fonts (default: none)
+            An array of sdtx_font_desc_t structs used to configure the
+            fonts that can be used for rendering. To use all builtin
+            fonts call sdtx_setup() like this (in C99):
+
+            sdtx_setup(&(sdtx_desc_t){
+                .fonts = {
+                    [0] = sdtx_font_kc853(),
+                    [1] = sdtx_font_kc854(),
+                    [2] = sdtx_font_z1013(),
+                    [3] = sdtx_font_cpc(),
+                    [4] = sdtx_font_c64(),
+                    [5] = sdtx_font_oric()
+                }
+            });
+
+            For documentation on how to use you own font data, search
+            below for "USING YOUR OWN FONT DATA".
+
+        .context
+            The setup parameters for the default text context. This will
+            be active right after sdtx_setup(), or when calling
+            sdtx_set_context(SDTX_DEFAULT_CONTEXT):
+
+            .max_commands (default: 4096)
+                The max number of render commands that can be recorded
+                into the internal command buffer. This directly translates
+                to the number of render layer changes in a single frame.
+
+            .char_buf_size (default: 4096)
+                The number of characters that can be rendered per frame in this
+                context, defines the size of an internal fixed-size vertex
+                buffer.  Any additional characters will be silently ignored.
+
+            .canvas_width (default: 640)
+            .canvas_height (default: 480)
+                The 'virtual canvas size' in pixels. This defines how big
+                characters will be rendered relative to the default framebuffer
+                dimensions. Each character occupies a grid of 8x8 'virtual canvas
+                pixels' (so a virtual canvas size of 640x480 means that 80x60 characters
+                fit on the screen). For rendering in a resizeable window, you
+                should dynamically update the canvas size in each frame by
+                calling sdtx_canvas(w, h).
+
+            .tab_width (default: 4)
+                The width of a tab character in number of character cells.
+
+            .color_format (default: 0)
+            .depth_format (default: 0)
+            .sample_count (default: 0)
+                The pixel format description for the default context needed
+                for creating the context's sg_pipeline object. When
+                rendering to the default framebuffer you can leave those
+                zero-initialized, in this case the proper values will be
+                filled in by sokol-gfx. You only need to provide non-default
+                values here when rendering to render targets with different
+                pixel format attributes than the default framebuffer.
+
+    --- Before starting to render text, optionally call sdtx_canvas() to
+        dynamically resize the virtual canvas. This is recommended when
+        rendering to a resizeable window. The virtual canvas size can
+        also be used to scale text in relation to the display resolution.
+
+        Examples when using sokol-app:
+
+        - to render characters at 8x8 'physical pixels':
+
+            sdtx_canvas(sapp_width(), sapp_height());
+
+        - to render characters at 16x16 physical pixels:
+
+            sdtx_canvas(sapp_width()/2.0f, sapp_height()/2.0f);
+
+        Do *not* use integer math here, since this will not look nice
+        when the render target size isn't divisible by 2.
+
+    --- Optionally define the origin for the character grid with:
+
+            sdtx_origin(x, y);
+
+        The provided coordinates are in character grid cells, not in
+        virtual canvas pixels. E.g. to set the origin to 2 character tiles
+        from the left and top border:
+
+            sdtx_origin(2, 2);
+
+        You can define fractions, e.g. to start rendering half
+        a character tile from the top-left corner:
+
+            sdtx_origin(0.5f, 0.5f);
+
+    --- Optionally set a different font by calling:
+
+            sdtx_font(font_index)
+
+        sokol-debugtext provides 8 font slots which can be populated
+        with the builtin fonts or with user-provided font data, so
+        'font_index' must be a number from 0 to 7.
+
+    --- Position the text cursor with one of the following calls. All arguments
+        are in character grid cells as floats and relative to the
+        origin defined with sdtx_origin():
+
+            sdtx_pos(x, y)      - sets absolute cursor position
+            sdtx_pos_x(x)       - only set absolute x cursor position
+            sdtx_pos_y(y)       - only set absolute y cursor position
+
+            sdtx_move(x, y)     - move cursor relative in x and y direction
+            sdtx_move_x(x)      - move cursor relative only in x direction
+            sdtx_move_y(y)      - move cursor relative only in y direction
+
+            sdtx_crlf()         - set cursor to beginning of next line
+                                  (same as sdtx_pos_x(0) + sdtx_move_y(1))
+            sdtx_home()         - resets the cursor to the origin
+                                  (same as sdtx_pos(0, 0))
+
+    --- Set a new text color with any of the following functions:
+
+            sdtx_color3b(r, g, b)       - RGB 0..255, A=255
+            sdtx_color3f(r, g, b)       - RGB 0.0f..1.0f, A=1.0f
+            sdtx_color4b(r, g, b, a)    - RGBA 0..255
+            sdtx_color4f(r, g, b, a)    - RGBA 0.0f..1.0f
+            sdtx_color1i(uint32_t rgba) - ABGR (0xAABBGGRR)
+
+    --- Output 8-bit ASCII text with the following functions:
+
+            sdtx_putc(c)             - output a single character
+
+            sdtx_puts(str)           - output a null-terminated C string, note that
+                                       this will *not* append a newline (so it behaves
+                                       differently than the CRT's puts() function)
+
+            sdtx_putr(str, len)     - 'put range' output the first 'len' characters of
+                                       a C string or until the zero character is encountered
+
+            sdtx_printf(fmt, ...)   - output with printf-formatting, note that you
+                                      can inject your own printf-compatible function
+                                      by overriding the SOKOL_VSNPRINTF define before
+                                      including the implementation
+
+            sdtx_vprintf(fmt, args) - same as sdtx_printf() but with the arguments
+                                      provided in a va_list
+
+        - Note that the text will not yet be rendered, only recorded for rendering
+          at a later time, the actual rendering happens when sdtx_draw() is called
+          inside a sokol-gfx render pass.
+        - This means also you can output text anywhere in the frame, it doesn't
+          have to be inside a render pass.
+        - Note that character codes <32 are reserved as control characters
+          and won't render anything. Currently only the following control
+          characters are implemented:
+
+            \r  - carriage return (same as sdtx_pos_x(0))
+            \n  - carriage return + line feed (same as stdx_crlf())
+            \t  - a tab character
+
+    --- You can 'record' text into render layers, this allows to mix/interleave
+        sokol-debugtext rendering with other rendering operations inside
+        sokol-gfx render passes. To start recording text into a different render
+        layer, call:
+
+            sdtx_layer(int layer_id)
+
+        ...outside a sokol-gfx render pass.
+
+    --- finally, from within a sokol-gfx render pass, call:
+
+            sdtx_draw()
+
+        ...for non-layered rendering, or to draw a specific layer:
+
+            sdtx_draw_layer(int layer_id)
+
+        NOTE that sdtx_draw() is equivalent to:
+
+            sdtx_draw_layer(0)
+
+        ...so sdtx_draw() will *NOT* render all text layers, instead it will
+        only render the 'default layer' 0.
+
+    --- at the end of a frame (defined by the call to sg_commit()), sokol-debugtext
+        will rewind all contexts:
+
+            - the internal vertex index is set to 0
+            - the internal command index is set to 0
+            - the current layer id is set to 0
+            - the current font is set to 0
+            - the cursor position is reset
+
+
+    RENDERING WITH MULTIPLE CONTEXTS
+    ================================
+    Use multiple text contexts if you need to render debug text in different
+    sokol-gfx render passes, or want to render text to different layers
+    in the same render pass, each with its own set of parameters.
+
+    To create a new text context call:
+
+        sdtx_context ctx = sdtx_make_context(&(sdtx_context_desc_t){ ... });
+
+    The creation parameters in the sdtx_context_desc_t struct are the same
+    as already described above in the sdtx_setup() function:
+
+        .char_buf_size      -- max number of characters rendered in one frame, default: 4096
+        .canvas_width       -- the initial virtual canvas width, default: 640
+        .canvas_height      -- the initial virtual canvas height, default: 400
+        .tab_width          -- tab width in number of characters, default: 4
+        .color_format       -- color pixel format of target render pass
+        .depth_format       -- depth pixel format of target render pass
+        .sample_count       -- MSAA sample count of target render pass
+
+    To make a new context the active context, call:
+
+        sdtx_set_context(ctx)
+
+    ...and after that call the text output functions as described above, and
+    finally, inside a sokol-gfx render pass, call sdtx_draw() to actually
+    render the text for this context.
+
+    A context keeps track of the following parameters:
+
+        - the active font
+        - the virtual canvas size
+        - the origin position
+        - the current cursor position
+        - the current tab width
+        - the current color
+        - and the current layer-id
+
+    You can get the currently active context with:
+
+        sdtx_get_context()
+
+    To make the default context current, call sdtx_set_context() with the
+    special SDTX_DEFAULT_CONTEXT handle:
+
+        sdtx_set_context(SDTX_DEFAULT_CONTEXT)
+
+    Alternatively, use the function sdtx_default_context() to get the default
+    context handle:
+
+        sdtx_set_context(sdtx_default_context());
+
+    To destroy a context, call:
+
+        sdtx_destroy_context(ctx)
+
+    If a context is set as active that no longer exists, all sokol-debugtext
+    functions that require an active context will silently fail.
+
+    You can directly draw the recorded text in a specific context without
+    setting the active context:
+
+        sdtx_context_draw(ctx)
+        sdtx_context_draw_layer(ctx, layer_id)
+
+    USING YOUR OWN FONT DATA
+    ========================
+
+    Instead of the built-in fonts you can also plug your own font data
+    into sokol-debugtext by providing one or several sdtx_font_desc_t
+    structures in the sdtx_setup call.
+
+    For instance to use a built-in font at slot 0, and a user-font at
+    font slot 1, the sdtx_setup() call might look like this:
+
+        sdtx_setup(&sdtx_desc_t){
+            .fonts = {
+                [0] = sdtx_font_kc853(),
+                [1] = {
+                    .data = {
+                        .ptr = my_font_data,
+                        .size = sizeof(my_font_data)
+                    },
+                    .first_char = ...,
+                    .last_char = ...
+                }
+            }
+        });
+
+    Where 'my_font_data' is a byte array where every character is described
+    by 8 bytes arranged like this:
+
+        bits
+        7 6 5 4 3 2 1 0
+        . . . X X . . .     byte 0: 0x18
+        . . X X X X . .     byte 1: 0x3C
+        . X X . . X X .     byte 2: 0x66
+        . X X . . X X .     byte 3: 0x66
+        . X X X X X X .     byte 4: 0x7E
+        . X X . . X X .     byte 5: 0x66
+        . X X . . X X .     byte 6: 0x66
+        . . . . . . . .     byte 7: 0x00
+
+    A complete font consists of 256 characters, resulting in 2048 bytes for
+    the font data array (but note that the character codes 0..31 will never
+    be rendered).
+
+    If you provide such a complete font data array, you can drop the .first_char
+    and .last_char initialization parameters since those default to 0 and 255,
+    note that you can also use the SDTX_RANGE() helper macro to build the
+    .data item:
+
+        sdtx_setup(&sdtx_desc_t){
+            .fonts = {
+                [0] = sdtx_font_kc853(),
+                [1] = {
+                    .data = SDTX_RANGE(my_font_data)
+                }
+            }
+        });
+
+    If the font doesn't define all 256 character tiles, or you don't need an
+    entire 256-character font and want to save a couple of bytes, use the
+    .first_char and .last_char initialization parameters to define a sub-range.
+    For instance if the font only contains the characters between the Space
+    (ASCII code 32) and uppercase character 'Z' (ASCII code 90):
+
+        sdtx_setup(&sdtx_desc_t){
+            .fonts = {
+                [0] = sdtx_font_kc853(),
+                [1] = {
+                    .data = SDTX_RANGE(my_font_data),
+                    .first_char = 32,       // could also write ' '
+                    .last_char = 90         // could also write 'Z'
+                }
+            }
+        });
+
+    Character tiles that haven't been defined in the font will be rendered
+    as a solid 8x8 quad.
+
+
+    MEMORY ALLOCATION OVERRIDE
+    ==========================
+    You can override the memory allocation functions at initialization time
+    like this:
+
+        void* my_alloc(size_t size, void* user_data) {
+            return malloc(size);
+        }
+
+        void my_free(void* ptr, void* user_data) {
+            free(ptr);
+        }
+
+        ...
+            sdtx_setup(&(sdtx_desc_t){
+                // ...
+                .allocator = {
+                    .alloc_fn = my_alloc,
+                    .free_fn = my_free,
+                    .user_data = ...;
+                }
+            });
+        ...
+
+    If no overrides are provided, malloc and free will be used.
+
+
+    ERROR REPORTING AND LOGGING
+    ===========================
+    To get any logging information at all you need to provide a logging callback in the setup call,
+    the easiest way is to use sokol_log.h:
+
+        #include "sokol_log.h"
+
+        sdtx_setup(&(sdtx_desc_t){
+            // ...
+            .logger.func = slog_func
+        });
+
+    To override logging with your own callback, first write a logging function like this:
+
+        void my_log(const char* tag,                // e.g. 'sdtx'
+                    uint32_t log_level,             // 0=panic, 1=error, 2=warn, 3=info
+                    uint32_t log_item_id,           // SDTX_LOGITEM_*
+                    const char* message_or_null,    // a message string, may be nullptr in release mode
+                    uint32_t line_nr,               // line number in sokol_debugtext.h
+                    const char* filename_or_null,   // source filename, may be nullptr in release mode
+                    void* user_data)
+        {
+            ...
+        }
+
+    ...and then setup sokol-debugtext like this:
+
+        sdtx_setup(&(sdtx_desc_t){
+            .logger = {
+                .func = my_log,
+                .user_data = my_user_data,
+            }
+        });
+
+    The provided logging function must be reentrant (e.g. be callable from
+    different threads).
+
+    If you don't want to provide your own custom logger it is highly recommended to use
+    the standard logger in sokol_log.h instead, otherwise you won't see any warnings or
+    errors.
+
+
+    LICENSE
+    =======
+    zlib/libpng license
+
+    Copyright (c) 2020 Andre Weissflog
+
+    This software is provided 'as-is', without any express or implied warranty.
+    In no event will the authors be held liable for any damages arising from the
+    use of this software.
+
+    Permission is granted to anyone to use this software for any purpose,
+    including commercial applications, and to alter it and redistribute it
+    freely, subject to the following restrictions:
+
+        1. The origin of this software must not be misrepresented; you must not
+        claim that you wrote the original software. If you use this software in a
+        product, an acknowledgment in the product documentation would be
+        appreciated but is not required.
+
+        2. Altered source versions must be plainly marked as such, and must not
+        be misrepresented as being the original software.
+
+        3. This notice may not be removed or altered from any source
+        distribution.
+
+*/
+import sg "../gfx"
+
+import "core:fmt"
+import "core:strings"
+printf :: proc(s: string, args: ..any) {
+    fstr := fmt.tprintf(s, ..args)
+    putr(strings.unsafe_string_to_cstring(fstr), len(fstr))
+}
+import "core:c"
+
+_ :: c
+
+SOKOL_DEBUG :: #config(SOKOL_DEBUG, ODIN_DEBUG)
+
+DEBUG :: #config(SOKOL_DEBUGTEXT_DEBUG, SOKOL_DEBUG)
+USE_GL :: #config(SOKOL_USE_GL, false)
+USE_DLL :: #config(SOKOL_DLL, false)
+
+when ODIN_OS == .Windows {
+    when USE_DLL {
+        when USE_GL {
+            when DEBUG { foreign import sokol_debugtext_clib { "../sokol_dll_windows_x64_gl_debug.lib" } }
+            else       { foreign import sokol_debugtext_clib { "../sokol_dll_windows_x64_gl_release.lib" } }
+        } else {
+            when DEBUG { foreign import sokol_debugtext_clib { "../sokol_dll_windows_x64_d3d11_debug.lib" } }
+            else       { foreign import sokol_debugtext_clib { "../sokol_dll_windows_x64_d3d11_release.lib" } }
+        }
+    } else {
+        when USE_GL {
+            when DEBUG { foreign import sokol_debugtext_clib { "sokol_debugtext_windows_x64_gl_debug.lib" } }
+            else       { foreign import sokol_debugtext_clib { "sokol_debugtext_windows_x64_gl_release.lib" } }
+        } else {
+            when DEBUG { foreign import sokol_debugtext_clib { "sokol_debugtext_windows_x64_d3d11_debug.lib" } }
+            else       { foreign import sokol_debugtext_clib { "sokol_debugtext_windows_x64_d3d11_release.lib" } }
+        }
+    }
+} else when ODIN_OS == .Darwin {
+    when USE_DLL {
+             when  USE_GL && ODIN_ARCH == .arm64 &&  DEBUG { foreign import sokol_debugtext_clib { "../dylib/sokol_dylib_macos_arm64_gl_debug.dylib" } }
+        else when  USE_GL && ODIN_ARCH == .arm64 && !DEBUG { foreign import sokol_debugtext_clib { "../dylib/sokol_dylib_macos_arm64_gl_release.dylib" } }
+        else when  USE_GL && ODIN_ARCH == .amd64 &&  DEBUG { foreign import sokol_debugtext_clib { "../dylib/sokol_dylib_macos_x64_gl_debug.dylib" } }
+        else when  USE_GL && ODIN_ARCH == .amd64 && !DEBUG { foreign import sokol_debugtext_clib { "../dylib/sokol_dylib_macos_x64_gl_release.dylib" } }
+        else when !USE_GL && ODIN_ARCH == .arm64 &&  DEBUG { foreign import sokol_debugtext_clib { "../dylib/sokol_dylib_macos_arm64_metal_debug.dylib" } }
+        else when !USE_GL && ODIN_ARCH == .arm64 && !DEBUG { foreign import sokol_debugtext_clib { "../dylib/sokol_dylib_macos_arm64_metal_release.dylib" } }
+        else when !USE_GL && ODIN_ARCH == .amd64 &&  DEBUG { foreign import sokol_debugtext_clib { "../dylib/sokol_dylib_macos_x64_metal_debug.dylib" } }
+        else when !USE_GL && ODIN_ARCH == .amd64 && !DEBUG { foreign import sokol_debugtext_clib { "../dylib/sokol_dylib_macos_x64_metal_release.dylib" } }
+    } else {
+        when USE_GL {
+            when ODIN_ARCH == .arm64 {
+                when DEBUG { foreign import sokol_debugtext_clib { "sokol_debugtext_macos_arm64_gl_debug.a" } }
+                else       { foreign import sokol_debugtext_clib { "sokol_debugtext_macos_arm64_gl_release.a" } }
+            } else {
+                when DEBUG { foreign import sokol_debugtext_clib { "sokol_debugtext_macos_x64_gl_debug.a" } }
+                else       { foreign import sokol_debugtext_clib { "sokol_debugtext_macos_x64_gl_release.a" } }
+            }
+        } else {
+            when ODIN_ARCH == .arm64 {
+                when DEBUG { foreign import sokol_debugtext_clib { "sokol_debugtext_macos_arm64_metal_debug.a" } }
+                else       { foreign import sokol_debugtext_clib { "sokol_debugtext_macos_arm64_metal_release.a" } }
+            } else {
+                when DEBUG { foreign import sokol_debugtext_clib { "sokol_debugtext_macos_x64_metal_debug.a" } }
+                else       { foreign import sokol_debugtext_clib { "sokol_debugtext_macos_x64_metal_release.a" } }
+            }
+        }
+    }
+} else when ODIN_OS == .Linux {
+    when USE_DLL {
+        when DEBUG { foreign import sokol_debugtext_clib { "sokol_debugtext_linux_x64_gl_debug.so" } }
+        else       { foreign import sokol_debugtext_clib { "sokol_debugtext_linux_x64_gl_release.so" } }
+    } else {
+        when DEBUG { foreign import sokol_debugtext_clib { "sokol_debugtext_linux_x64_gl_debug.a" } }
+        else       { foreign import sokol_debugtext_clib { "sokol_debugtext_linux_x64_gl_release.a" } }
+    }
+} else when ODIN_ARCH == .wasm32 || ODIN_ARCH == .wasm64p32 {
+    // Feed sokol_debugtext_wasm_gl_debug.a or sokol_debugtext_wasm_gl_release.a into emscripten compiler.
+    foreign import sokol_debugtext_clib { "env.o" }
+} else {
+    #panic("This OS is currently not supported")
+}
+
+@(default_calling_convention="c", link_prefix="sdtx_")
+foreign sokol_debugtext_clib {
+    // initialization/shutdown
+    setup :: proc(#by_ptr desc: Desc)  ---
+    shutdown :: proc()  ---
+    // builtin font data (use to populate sdtx_desc.font[])
+    font_kc853 :: proc() -> Font_Desc ---
+    font_kc854 :: proc() -> Font_Desc ---
+    font_z1013 :: proc() -> Font_Desc ---
+    font_cpc :: proc() -> Font_Desc ---
+    font_c64 :: proc() -> Font_Desc ---
+    font_oric :: proc() -> Font_Desc ---
+    // context functions
+    make_context :: proc(#by_ptr desc: Context_Desc) -> Context ---
+    destroy_context :: proc(ctx: Context)  ---
+    set_context :: proc(ctx: Context)  ---
+    get_context :: proc() -> Context ---
+    default_context :: proc() -> Context ---
+    // drawing functions (call inside sokol-gfx render pass)
+    draw :: proc()  ---
+    context_draw :: proc(ctx: Context)  ---
+    draw_layer :: proc(#any_int layer_id: c.int)  ---
+    context_draw_layer :: proc(ctx: Context, #any_int layer_id: c.int)  ---
+    // switch render layer
+    layer :: proc(#any_int layer_id: c.int)  ---
+    // switch to a different font
+    font :: proc(#any_int font_index: c.int)  ---
+    // set a new virtual canvas size in screen pixels
+    canvas :: proc(w: f32, h: f32)  ---
+    // set a new origin in character grid coordinates
+    origin :: proc(x: f32, y: f32)  ---
+    // cursor movement functions (relative to origin in character grid coordinates)
+    home :: proc()  ---
+    pos :: proc(x: f32, y: f32)  ---
+    pos_x :: proc(x: f32)  ---
+    pos_y :: proc(y: f32)  ---
+    move :: proc(dx: f32, dy: f32)  ---
+    move_x :: proc(dx: f32)  ---
+    move_y :: proc(dy: f32)  ---
+    crlf :: proc()  ---
+    // set the current text color
+    color3b :: proc(r: u8, g: u8, b: u8)  ---
+    color3f :: proc(r: f32, g: f32, b: f32)  ---
+    color4b :: proc(r: u8, g: u8, b: u8, a: u8)  ---
+    color4f :: proc(r: f32, g: f32, b: f32, a: f32)  ---
+    color1i :: proc(rgba: u32)  ---
+    // text rendering
+    putc :: proc(c: u8)  ---
+    puts :: proc(str: cstring)  ---
+    putr :: proc(str: cstring, #any_int len: c.int)  ---
+}
+
+Log_Item :: enum i32 {
+    OK,
+    MALLOC_FAILED,
+    ADD_COMMIT_LISTENER_FAILED,
+    COMMAND_BUFFER_FULL,
+    CONTEXT_POOL_EXHAUSTED,
+    CANNOT_DESTROY_DEFAULT_CONTEXT,
+}
+
+/*
+    sdtx_logger_t
+
+    Used in sdtx_desc_t to provide a custom logging and error reporting
+    callback to sokol-debugtext.
+*/
+Logger :: struct {
+    func : proc "c" (a0: cstring, a1: u32, a2: u32, a3: cstring, a4: u32, a5: cstring, a6: rawptr),
+    user_data : rawptr,
+}
+
+// a rendering context handle
+Context :: struct {
+    id : u32,
+}
+
+/*
+    sdtx_range is a pointer-size-pair struct used to pass memory
+    blobs into sokol-debugtext. When initialized from a value type
+    (array or struct), use the SDTX_RANGE() macro to build
+    an sdtx_range struct.
+*/
+Range :: struct {
+    ptr : rawptr,
+    size : c.size_t,
+}
+
+Font_Desc :: struct {
+    data : Range,
+    first_char : u8,
+    last_char : u8,
+}
+
+/*
+    sdtx_context_desc_t
+
+    Describes the initialization parameters of a rendering context. Creating
+    additional rendering contexts is useful if you want to render in
+    different sokol-gfx rendering passes, or when rendering several layers
+    of text.
+*/
+Context_Desc :: struct {
+    max_commands : c.int,
+    char_buf_size : c.int,
+    canvas_width : f32,
+    canvas_height : f32,
+    tab_width : c.int,
+    color_format : sg.Pixel_Format,
+    depth_format : sg.Pixel_Format,
+    sample_count : c.int,
+}
+
+/*
+    sdtx_allocator_t
+
+    Used in sdtx_desc_t to provide custom memory-alloc and -free functions
+    to sokol_debugtext.h. If memory management should be overridden, both the
+    alloc_fn and free_fn function must be provided (e.g. it's not valid to
+    override one function but not the other).
+*/
+Allocator :: struct {
+    alloc_fn : proc "c" (a0: c.size_t, a1: rawptr) -> rawptr,
+    free_fn : proc "c" (a0: rawptr, a1: rawptr),
+    user_data : rawptr,
+}
+
+/*
+    sdtx_desc_t
+
+    Describes the sokol-debugtext API initialization parameters. Passed
+    to the sdtx_setup() function.
+
+    NOTE: to populate the fonts item array with builtin fonts, use any
+    of the following functions:
+
+        sdtx_font_kc853()
+        sdtx_font_kc854()
+        sdtx_font_z1013()
+        sdtx_font_cpc()
+        sdtx_font_c64()
+        sdtx_font_oric()
+*/
+Desc :: struct {
+    context_pool_size : c.int,
+    printf_buf_size : c.int,
+    fonts : [8]Font_Desc,
+    ctx : Context_Desc,
+    allocator : Allocator,
+    logger : Logger,
+}
+

thirdparty/sokol/gl/gl.odin

@@ -0,0 +1,962 @@
+// machine generated, do not edit
+
+package sokol_gl
+
+/*
+
+    sokol_gl.h -- OpenGL 1.x style rendering on top of sokol_gfx.h
+
+    Project URL: https://github.com/floooh/sokol
+
+    Do this:
+        #define SOKOL_IMPL or
+        #define SOKOL_GL_IMPL
+    before you include this file in *one* C or C++ file to create the
+    implementation.
+
+    The following defines are used by the implementation to select the
+    platform-specific embedded shader code (these are the same defines as
+    used by sokol_gfx.h and sokol_app.h):
+
+    SOKOL_GLCORE
+    SOKOL_GLES3
+    SOKOL_D3D11
+    SOKOL_METAL
+    SOKOL_WGPU
+
+    ...optionally provide the following macros to override defaults:
+
+    SOKOL_ASSERT(c)     - your own assert macro (default: assert(c))
+    SOKOL_GL_API_DECL   - public function declaration prefix (default: extern)
+    SOKOL_API_DECL      - same as SOKOL_GL_API_DECL
+    SOKOL_API_IMPL      - public function implementation prefix (default: -)
+    SOKOL_UNREACHABLE() - a guard macro for unreachable code (default: assert(false))
+
+    If sokol_gl.h is compiled as a DLL, define the following before
+    including the declaration or implementation:
+
+    SOKOL_DLL
+
+    On Windows, SOKOL_DLL will define SOKOL_GL_API_DECL as __declspec(dllexport)
+    or __declspec(dllimport) as needed.
+
+    Include the following headers before including sokol_gl.h:
+
+        sokol_gfx.h
+
+    Matrix functions have been taken from MESA and Regal.
+
+    FEATURE OVERVIEW:
+    =================
+    sokol_gl.h implements a subset of the OpenGLES 1.x feature set useful for
+    when you just want to quickly render a bunch of triangles or
+    lines without having to mess with buffers and shaders.
+
+    The current feature set is mostly useful for debug visualizations
+    and simple UI-style 2D rendering:
+
+    What's implemented:
+        - vertex components:
+            - position (x, y, z)
+            - 2D texture coords (u, v)
+            - color (r, g, b, a)
+        - primitive types:
+            - triangle list and strip
+            - line list and strip
+            - quad list (TODO: quad strips)
+            - point list
+        - one texture layer (no multi-texturing)
+        - viewport and scissor-rect with selectable origin (top-left or bottom-left)
+        - all GL 1.x matrix stack functions, and additionally equivalent
+          functions for gluPerspective and gluLookat
+
+    Notable GLES 1.x features that are *NOT* implemented:
+        - vertex lighting (this is the most likely GL feature that might be added later)
+        - vertex arrays (although providing whole chunks of vertex data at once
+          might be a useful feature for a later version)
+        - texture coordinate generation
+        - line width
+        - all pixel store functions
+        - no ALPHA_TEST
+        - no clear functions (clearing is handled by the sokol-gfx render pass)
+        - fog
+
+    Notable differences to GL:
+        - No "enum soup" for render states etc, instead there's a
+          'pipeline stack', this is similar to GL's matrix stack,
+          but for pipeline-state-objects. The pipeline object at
+          the top of the pipeline stack defines the active set of render states
+        - All angles are in radians, not degrees (note the sgl_rad() and
+          sgl_deg() conversion functions)
+        - No enable/disable state for scissor test, this is always enabled
+
+    STEP BY STEP:
+    =============
+    --- To initialize sokol-gl, call:
+
+            sgl_setup(const sgl_desc_t* desc)
+
+        NOTE that sgl_setup() must be called *after* initializing sokol-gfx
+        (via sg_setup). This is because sgl_setup() needs to create
+        sokol-gfx resource objects.
+
+        If you're intending to render to the default pass, and also don't
+        want to tweak memory usage, and don't want any logging output you can
+        just keep sgl_desc_t zero-initialized:
+
+            sgl_setup(&(sgl_desc_t*){ 0 });
+
+        In this case, sokol-gl will create internal sg_pipeline objects that
+        are compatible with the sokol-app default framebuffer.
+
+        I would recommend to at least install a logging callback so that
+        you'll see any warnings and errors. The easiest way is through
+        sokol_log.h:
+
+            #include "sokol_log.h"
+
+            sgl_setup(&(sgl_desc_t){
+                .logger.func = slog_func.
+            });
+
+        If you want to render into a framebuffer with different pixel-format
+        and MSAA attributes you need to provide the matching attributes in the
+        sgl_setup() call:
+
+            sgl_setup(&(sgl_desc_t*){
+                .color_format = SG_PIXELFORMAT_...,
+                .depth_format = SG_PIXELFORMAT_...,
+                .sample_count = ...,
+            });
+
+        To reduce memory usage, or if you need to create more then the default number of
+        contexts, pipelines, vertices or draw commands, set the following sgl_desc_t
+        members:
+
+            .context_pool_size      (default: 4)
+            .pipeline_pool_size     (default: 64)
+            .max_vertices       (default: 64k)
+            .max_commands       (default: 16k)
+
+        Finally you can change the face winding for front-facing triangles
+        and quads:
+
+            .face_winding    - default is SG_FACEWINDING_CCW
+
+        The default winding for front faces is counter-clock-wise. This is
+        the same as OpenGL's default, but different from sokol-gfx.
+
+    --- Optionally create additional context objects if you want to render into
+        multiple sokol-gfx render passes (or generally if you want to
+        use multiple independent sokol-gl "state buckets")
+
+            sgl_context ctx = sgl_make_context(const sgl_context_desc_t* desc)
+
+        For details on rendering with sokol-gl contexts, search below for
+        WORKING WITH CONTEXTS.
+
+    --- Optionally create pipeline-state-objects if you need render state
+        that differs from sokol-gl's default state:
+
+            sgl_pipeline pip = sgl_make_pipeline(const sg_pipeline_desc* desc)
+
+        ...this creates a pipeline object that's compatible with the currently
+        active context, alternatively call:
+
+            sgl_pipeline_pip = sgl_context_make_pipeline(sgl_context ctx, const sg_pipeline_desc* desc)
+
+        ...to create a pipeline object that's compatible with an explicitly
+        provided context.
+
+        The similarity with sokol_gfx.h's sg_pipeline type and sg_make_pipeline()
+        function is intended. sgl_make_pipeline() also takes a standard
+        sokol-gfx sg_pipeline_desc object to describe the render state, but
+        without:
+            - shader
+            - vertex layout
+            - color- and depth-pixel-formats
+            - primitive type (lines, triangles, ...)
+            - MSAA sample count
+        Those will be filled in by sgl_make_pipeline(). Note that each
+        call to sgl_make_pipeline() needs to create several sokol-gfx
+        pipeline objects (one for each primitive type).
+
+        'depth.write_enabled' will be forced to 'false' if the context this
+        pipeline object is intended for has its depth pixel format set to
+        SG_PIXELFORMAT_NONE (which means the framebuffer this context is used
+        with doesn't have a depth-stencil surface).
+
+    --- if you need to destroy sgl_pipeline objects before sgl_shutdown():
+
+            sgl_destroy_pipeline(sgl_pipeline pip)
+
+    --- After sgl_setup() you can call any of the sokol-gl functions anywhere
+        in a frame, *except* sgl_draw(). The 'vanilla' functions
+        will only change internal sokol-gl state, and not call any sokol-gfx
+        functions.
+
+    --- Unlike OpenGL, sokol-gl has a function to reset internal state to
+        a known default. This is useful at the start of a sequence of
+        rendering operations:
+
+            void sgl_defaults(void)
+
+        This will set the following default state:
+
+            - current texture coordinate to u=0.0f, v=0.0f
+            - current color to white (rgba all 1.0f)
+            - current point size to 1.0f
+            - unbind the current texture and texturing will be disabled
+            - *all* matrices will be set to identity (also the projection matrix)
+            - the default render state will be set by loading the 'default pipeline'
+              into the top of the pipeline stack
+
+        The current matrix- and pipeline-stack-depths will not be changed by
+        sgl_defaults().
+
+    --- change the currently active renderstate through the
+        pipeline-stack functions, this works similar to the
+        traditional GL matrix stack:
+
+            ...load the default pipeline state on the top of the pipeline stack:
+
+                sgl_load_default_pipeline()
+
+            ...load a specific pipeline on the top of the pipeline stack:
+
+                sgl_load_pipeline(sgl_pipeline pip)
+
+            ...push and pop the pipeline stack:
+                sgl_push_pipeline()
+                sgl_pop_pipeline()
+
+    --- control texturing with:
+
+            sgl_enable_texture()
+            sgl_disable_texture()
+            sgl_texture(sg_image img, sg_sampler smp)
+
+        NOTE: the img and smp handles can be invalid (SG_INVALID_ID), in this
+        case, sokol-gl will fall back to the internal default (white) texture
+        and sampler.
+
+    --- set the current viewport and scissor rect with:
+
+            sgl_viewport(int x, int y, int w, int h, bool origin_top_left)
+            sgl_scissor_rect(int x, int y, int w, int h, bool origin_top_left)
+
+        ...or call these alternatives which take float arguments (this might allow
+        to avoid casting between float and integer in more strongly typed languages
+        when floating point pixel coordinates are used):
+
+            sgl_viewportf(float x, float y, float w, float h, bool origin_top_left)
+            sgl_scissor_rectf(float x, float y, float w, float h, bool origin_top_left)
+
+        ...these calls add a new command to the internal command queue, so
+        that the viewport or scissor rect are set at the right time relative
+        to other sokol-gl calls.
+
+    --- adjust the transform matrices, matrix manipulation works just like
+        the OpenGL matrix stack:
+
+        ...set the current matrix mode:
+
+            sgl_matrix_mode_modelview()
+            sgl_matrix_mode_projection()
+            sgl_matrix_mode_texture()
+
+        ...load the identity matrix into the current matrix:
+
+            sgl_load_identity()
+
+        ...translate, rotate and scale the current matrix:
+
+            sgl_translate(float x, float y, float z)
+            sgl_rotate(float angle_rad, float x, float y, float z)
+            sgl_scale(float x, float y, float z)
+
+        NOTE that all angles in sokol-gl are in radians, not in degree.
+        Convert between radians and degree with the helper functions:
+
+            float sgl_rad(float deg)        - degrees to radians
+            float sgl_deg(float rad)        - radians to degrees
+
+        ...directly load the current matrix from a float[16] array:
+
+            sgl_load_matrix(const float m[16])
+            sgl_load_transpose_matrix(const float m[16])
+
+        ...directly multiply the current matrix from a float[16] array:
+
+            sgl_mult_matrix(const float m[16])
+            sgl_mult_transpose_matrix(const float m[16])
+
+        The memory layout of those float[16] arrays is the same as in OpenGL.
+
+        ...more matrix functions:
+
+            sgl_frustum(float left, float right, float bottom, float top, float near, float far)
+            sgl_ortho(float left, float right, float bottom, float top, float near, float far)
+            sgl_perspective(float fov_y, float aspect, float near, float far)
+            sgl_lookat(float eye_x, float eye_y, float eye_z, float center_x, float center_y, float center_z, float up_x, float up_y, float up_z)
+
+        These functions work the same as glFrustum(), glOrtho(), gluPerspective()
+        and gluLookAt().
+
+        ...and finally to push / pop the current matrix stack:
+
+            sgl_push_matrix(void)
+            sgl_pop_matrix(void)
+
+        Again, these work the same as glPushMatrix() and glPopMatrix().
+
+    --- perform primitive rendering:
+
+        ...set the current texture coordinate and color 'registers' with or
+        point size with:
+
+            sgl_t2f(float u, float v)   - set current texture coordinate
+            sgl_c*(...)                 - set current color
+            sgl_point_size(float size)  - set current point size
+
+        There are several functions for setting the color (as float values,
+        unsigned byte values, packed as unsigned 32-bit integer, with
+        and without alpha).
+
+        NOTE that these are the only functions that can be called both inside
+        sgl_begin_*() / sgl_end() and outside.
+
+        Also NOTE that point size is currently hardwired to 1.0f if the D3D11
+        backend is used.
+
+        ...start a primitive vertex sequence with:
+
+            sgl_begin_points()
+            sgl_begin_lines()
+            sgl_begin_line_strip()
+            sgl_begin_triangles()
+            sgl_begin_triangle_strip()
+            sgl_begin_quads()
+
+        ...after sgl_begin_*() specify vertices:
+
+            sgl_v*(...)
+            sgl_v*_t*(...)
+            sgl_v*_c*(...)
+            sgl_v*_t*_c*(...)
+
+        These functions write a new vertex to sokol-gl's internal vertex buffer,
+        optionally with texture-coords and color. If the texture coordinate
+        and/or color is missing, it will be taken from the current texture-coord
+        and color 'register'.
+
+        ...finally, after specifying vertices, call:
+
+            sgl_end()
+
+        This will record a new draw command in sokol-gl's internal command
+        list, or it will extend the previous draw command if no relevant
+        state has changed since the last sgl_begin/end pair.
+
+    --- inside a sokol-gfx rendering pass, call the sgl_draw() function
+        to render the currently active context:
+
+            sgl_draw()
+
+        ...or alternatively call:
+
+            sgl_context_draw(ctx)
+
+        ...to render an explicitly provided context.
+
+        This will render everything that has been recorded in the context since
+        the last call to sgl_draw() through sokol-gfx, and will 'rewind' the internal
+        vertex-, uniform- and command-buffers.
+
+    --- each sokol-gl context tracks internal error states which can
+        be obtains via:
+
+            sgl_error_t sgl_error()
+
+        ...alternatively with an explicit context argument:
+
+            sgl_error_t sgl_context_error(ctx);
+
+        ...this returns a struct with the following booleans:
+
+            .any                - true if any of the below errors is true
+            .vertices_full      - internal vertex buffer is full (checked in sgl_end())
+            .uniforms_full      - the internal uniforms buffer is full (checked in sgl_end())
+            .commands_full      - the internal command buffer is full (checked in sgl_end())
+            .stack_overflow     - matrix- or pipeline-stack overflow
+            .stack_underflow    - matrix- or pipeline-stack underflow
+            .no_context         - the active context no longer exists
+
+        ...depending on the above error state, sgl_draw() may skip rendering
+        completely, or only draw partial geometry
+
+    --- you can get the number of recorded vertices and draw commands in the current
+        frame and active sokol-gl context via:
+
+            int sgl_num_vertices()
+            int sgl_num_commands()
+
+        ...this allows you to check whether the vertex or command pools are running
+        full before the overflow actually happens (in this case you could also
+        check the error booleans in the result of sgl_error()).
+
+    RENDER LAYERS
+    =============
+    Render layers allow to split sokol-gl rendering into separate draw-command
+    groups which can then be rendered separately in a sokol-gfx draw pass. This
+    allows to mix/interleave sokol-gl rendering with other render operations.
+
+    Layered rendering is controlled through two functions:
+
+        sgl_layer(int layer_id)
+        sgl_draw_layer(int layer_id)
+
+    (and the context-variant sgl_draw_layer(): sgl_context_draw_layer()
+
+    The sgl_layer() function sets the 'current layer', any sokol-gl calls
+    which internally record draw commands will also store the current layer
+    in the draw command, and later in a sokol-gfx render pass, a call
+    to sgl_draw_layer() will only render the draw commands that have
+    a matching layer.
+
+    The default layer is '0', this is active after sokol-gl setup, and
+    is also restored at the start of a new frame (but *not* by calling
+    sgl_defaults()).
+
+    NOTE that calling sgl_draw() is equivalent with sgl_draw_layer(0)
+    (in general you should either use either use sgl_draw() or
+    sgl_draw_layer() in an application, but not both).
+
+    WORKING WITH CONTEXTS:
+    ======================
+    If you want to render to more than one sokol-gfx render pass you need to
+    work with additional sokol-gl context objects (one context object for
+    each offscreen rendering pass, in addition to the implicitly created
+    'default context'.
+
+    All sokol-gl state is tracked per context, and there is always a "current
+    context" (with the notable exception that the currently set context is
+    destroyed, more on that later).
+
+    Using multiple contexts can also be useful if you only render in
+    a single pass, but want to maintain multiple independent "state buckets".
+
+    To create new context object, call:
+
+        sgl_context ctx = sgl_make_context(&(sgl_context_desc){
+            .max_vertices = ...,        // default: 64k
+            .max_commands = ...,        // default: 16k
+            .color_format = ...,
+            .depth_format = ...,
+            .sample_count = ...,
+        });
+
+    The color_format, depth_format and sample_count items must be compatible
+    with the render pass the sgl_draw() or sgL_context_draw() function
+    will be called in.
+
+    Creating a context does *not* make the context current. To do this, call:
+
+        sgl_set_context(ctx);
+
+    The currently active context will implicitly be used by most sokol-gl functions
+    which don't take an explicit context handle as argument.
+
+    To switch back to the default context, pass the global constant SGL_DEFAULT_CONTEXT:
+
+        sgl_set_context(SGL_DEFAULT_CONTEXT);
+
+    ...or alternatively use the function sgl_default_context() instead of the
+    global constant:
+
+        sgl_set_context(sgl_default_context());
+
+    To get the currently active context, call:
+
+        sgl_context cur_ctx = sgl_get_context();
+
+    The following functions exist in two variants, one which use the currently
+    active context (set with sgl_set_context()), and another version which
+    takes an explicit context handle instead:
+
+        sgl_make_pipeline() vs sgl_context_make_pipeline()
+        sgl_error() vs sgl_context_error();
+        sgl_draw() vs sgl_context_draw();
+
+    Except for using the currently active context versus a provided context
+    handle, the two variants are exactlyidentical, e.g. the following
+    code sequences do the same thing:
+
+        sgl_set_context(ctx);
+        sgl_pipeline pip = sgl_make_pipeline(...);
+        sgl_error_t err = sgl_error();
+        sgl_draw();
+
+        vs
+
+        sgl_pipeline pip = sgl_context_make_pipeline(ctx, ...);
+        sgl_error_t err = sgl_context_error(ctx);
+        sgl_context_draw(ctx);
+
+    Destroying the currently active context is a 'soft error'. All following
+    calls which require a currently active context will silently fail,
+    and sgl_error() will return SGL_ERROR_NO_CONTEXT.
+
+    UNDER THE HOOD:
+    ===============
+    sokol_gl.h works by recording vertex data and rendering commands into
+    memory buffers, and then drawing the recorded commands via sokol_gfx.h
+
+    The only functions which call into sokol_gfx.h are:
+        - sgl_setup()
+        - sgl_shutdown()
+        - sgl_draw() (and variants)
+
+    sgl_setup() must be called after initializing sokol-gfx.
+    sgl_shutdown() must be called before shutting down sokol-gfx.
+    sgl_draw() must be called once per frame inside a sokol-gfx render pass.
+
+    All other sokol-gl function can be called anywhere in a frame, since
+    they just record data into memory buffers owned by sokol-gl.
+
+    What happens in:
+
+        sgl_setup():
+            Unique resources shared by all contexts are created:
+                - a shader object (using embedded shader source or byte code)
+                - an 8x8 white default texture
+            The default context is created, which involves:
+                - 3 memory buffers are created, one for vertex data,
+                  one for uniform data, and one for commands
+                - a dynamic vertex buffer is created
+                - the default sgl_pipeline object is created, which involves
+                  creating 5 sg_pipeline objects
+
+            One vertex is 24 bytes:
+                - float3 position
+                - float2 texture coords
+                - uint32_t color
+
+            One uniform block is 128 bytes:
+                - mat4 model-view-projection matrix
+                - mat4 texture matrix
+
+            One draw command is ca. 24 bytes for the actual
+            command code plus command arguments.
+
+            Each sgl_end() consumes one command, and one uniform block
+            (only when the matrices have changed).
+            The required size for one sgl_begin/end pair is (at most):
+
+                (152 + 24 * num_verts) bytes
+
+        sgl_shutdown():
+            - all sokol-gfx resources (buffer, shader, default-texture and
+              all pipeline objects) are destroyed
+            - the 3 memory buffers are freed
+
+        sgl_draw() (and variants)
+            - copy all recorded vertex data into the dynamic sokol-gfx buffer
+              via a call to sg_update_buffer()
+            - for each recorded command:
+                - if the layer number stored in the command doesn't match
+                  the layer that's to be rendered, skip to the next
+                  command
+                - if it's a viewport command, call sg_apply_viewport()
+                - if it's a scissor-rect command, call sg_apply_scissor_rect()
+                - if it's a draw command:
+                    - depending on what has changed since the last draw command,
+                      call sg_apply_pipeline(), sg_apply_bindings() and
+                      sg_apply_uniforms()
+                    - finally call sg_draw()
+
+    All other functions only modify the internally tracked state, add
+    data to the vertex, uniform and command buffers, or manipulate
+    the matrix stack.
+
+    ON DRAW COMMAND MERGING
+    =======================
+    Not every call to sgl_end() will automatically record a new draw command.
+    If possible, the previous draw command will simply be extended,
+    resulting in fewer actual draw calls later in sgl_draw().
+
+    A draw command will be merged with the previous command if "no relevant
+    state has changed" since the last sgl_end(), meaning:
+
+    - no calls to sgl_viewport() and sgl_scissor_rect()
+    - the primitive type hasn't changed
+    - the primitive type isn't a 'strip type' (no line or triangle strip)
+    - the pipeline state object hasn't changed
+    - the current layer hasn't changed
+    - none of the matrices has changed
+    - none of the texture state has changed
+
+    Merging a draw command simply means that the number of vertices
+    to render in the previous draw command will be incremented by the
+    number of vertices in the new draw command.
+
+    MEMORY ALLOCATION OVERRIDE
+    ==========================
+    You can override the memory allocation functions at initialization time
+    like this:
+
+        void* my_alloc(size_t size, void* user_data) {
+            return malloc(size);
+        }
+
+        void my_free(void* ptr, void* user_data) {
+            free(ptr);
+        }
+
+        ...
+            sgl_setup(&(sgl_desc_t){
+                // ...
+                .allocator = {
+                    .alloc_fn = my_alloc,
+                    .free_fn = my_free,
+                    .user_data = ...;
+                }
+            });
+        ...
+
+    If no overrides are provided, malloc and free will be used.
+
+
+    ERROR REPORTING AND LOGGING
+    ===========================
+    To get any logging information at all you need to provide a logging callback in the setup call,
+    the easiest way is to use sokol_log.h:
+
+        #include "sokol_log.h"
+
+        sgl_setup(&(sgl_desc_t){
+            // ...
+            .logger.func = slog_func
+        });
+
+    To override logging with your own callback, first write a logging function like this:
+
+        void my_log(const char* tag,                // e.g. 'sgl'
+                    uint32_t log_level,             // 0=panic, 1=error, 2=warn, 3=info
+                    uint32_t log_item_id,           // SGL_LOGITEM_*
+                    const char* message_or_null,    // a message string, may be nullptr in release mode
+                    uint32_t line_nr,               // line number in sokol_gl.h
+                    const char* filename_or_null,   // source filename, may be nullptr in release mode
+                    void* user_data)
+        {
+            ...
+        }
+
+    ...and then setup sokol-gl like this:
+
+        sgl_setup(&(sgl_desc_t){
+            .logger = {
+                .func = my_log,
+                .user_data = my_user_data,
+            }
+        });
+
+    The provided logging function must be reentrant (e.g. be callable from
+    different threads).
+
+    If you don't want to provide your own custom logger it is highly recommended to use
+    the standard logger in sokol_log.h instead, otherwise you won't see any warnings or
+    errors.
+
+
+    LICENSE
+    =======
+    zlib/libpng license
+
+    Copyright (c) 2018 Andre Weissflog
+
+    This software is provided 'as-is', without any express or implied warranty.
+    In no event will the authors be held liable for any damages arising from the
+    use of this software.
+
+    Permission is granted to anyone to use this software for any purpose,
+    including commercial applications, and to alter it and redistribute it
+    freely, subject to the following restrictions:
+
+        1. The origin of this software must not be misrepresented; you must not
+        claim that you wrote the original software. If you use this software in a
+        product, an acknowledgment in the product documentation would be
+        appreciated but is not required.
+
+        2. Altered source versions must be plainly marked as such, and must not
+        be misrepresented as being the original software.
+
+        3. This notice may not be removed or altered from any source
+        distribution.
+
+*/
+import sg "../gfx"
+
+import "core:c"
+
+_ :: c
+
+SOKOL_DEBUG :: #config(SOKOL_DEBUG, ODIN_DEBUG)
+
+DEBUG :: #config(SOKOL_GL_DEBUG, SOKOL_DEBUG)
+USE_GL :: #config(SOKOL_USE_GL, false)
+USE_DLL :: #config(SOKOL_DLL, false)
+
+when ODIN_OS == .Windows {
+    when USE_DLL {
+        when USE_GL {
+            when DEBUG { foreign import sokol_gl_clib { "../sokol_dll_windows_x64_gl_debug.lib" } }
+            else       { foreign import sokol_gl_clib { "../sokol_dll_windows_x64_gl_release.lib" } }
+        } else {
+            when DEBUG { foreign import sokol_gl_clib { "../sokol_dll_windows_x64_d3d11_debug.lib" } }
+            else       { foreign import sokol_gl_clib { "../sokol_dll_windows_x64_d3d11_release.lib" } }
+        }
+    } else {
+        when USE_GL {
+            when DEBUG { foreign import sokol_gl_clib { "sokol_gl_windows_x64_gl_debug.lib" } }
+            else       { foreign import sokol_gl_clib { "sokol_gl_windows_x64_gl_release.lib" } }
+        } else {
+            when DEBUG { foreign import sokol_gl_clib { "sokol_gl_windows_x64_d3d11_debug.lib" } }
+            else       { foreign import sokol_gl_clib { "sokol_gl_windows_x64_d3d11_release.lib" } }
+        }
+    }
+} else when ODIN_OS == .Darwin {
+    when USE_DLL {
+             when  USE_GL && ODIN_ARCH == .arm64 &&  DEBUG { foreign import sokol_gl_clib { "../dylib/sokol_dylib_macos_arm64_gl_debug.dylib" } }
+        else when  USE_GL && ODIN_ARCH == .arm64 && !DEBUG { foreign import sokol_gl_clib { "../dylib/sokol_dylib_macos_arm64_gl_release.dylib" } }
+        else when  USE_GL && ODIN_ARCH == .amd64 &&  DEBUG { foreign import sokol_gl_clib { "../dylib/sokol_dylib_macos_x64_gl_debug.dylib" } }
+        else when  USE_GL && ODIN_ARCH == .amd64 && !DEBUG { foreign import sokol_gl_clib { "../dylib/sokol_dylib_macos_x64_gl_release.dylib" } }
+        else when !USE_GL && ODIN_ARCH == .arm64 &&  DEBUG { foreign import sokol_gl_clib { "../dylib/sokol_dylib_macos_arm64_metal_debug.dylib" } }
+        else when !USE_GL && ODIN_ARCH == .arm64 && !DEBUG { foreign import sokol_gl_clib { "../dylib/sokol_dylib_macos_arm64_metal_release.dylib" } }
+        else when !USE_GL && ODIN_ARCH == .amd64 &&  DEBUG { foreign import sokol_gl_clib { "../dylib/sokol_dylib_macos_x64_metal_debug.dylib" } }
+        else when !USE_GL && ODIN_ARCH == .amd64 && !DEBUG { foreign import sokol_gl_clib { "../dylib/sokol_dylib_macos_x64_metal_release.dylib" } }
+    } else {
+        when USE_GL {
+            when ODIN_ARCH == .arm64 {
+                when DEBUG { foreign import sokol_gl_clib { "sokol_gl_macos_arm64_gl_debug.a" } }
+                else       { foreign import sokol_gl_clib { "sokol_gl_macos_arm64_gl_release.a" } }
+            } else {
+                when DEBUG { foreign import sokol_gl_clib { "sokol_gl_macos_x64_gl_debug.a" } }
+                else       { foreign import sokol_gl_clib { "sokol_gl_macos_x64_gl_release.a" } }
+            }
+        } else {
+            when ODIN_ARCH == .arm64 {
+                when DEBUG { foreign import sokol_gl_clib { "sokol_gl_macos_arm64_metal_debug.a" } }
+                else       { foreign import sokol_gl_clib { "sokol_gl_macos_arm64_metal_release.a" } }
+            } else {
+                when DEBUG { foreign import sokol_gl_clib { "sokol_gl_macos_x64_metal_debug.a" } }
+                else       { foreign import sokol_gl_clib { "sokol_gl_macos_x64_metal_release.a" } }
+            }
+        }
+    }
+} else when ODIN_OS == .Linux {
+    when USE_DLL {
+        when DEBUG { foreign import sokol_gl_clib { "sokol_gl_linux_x64_gl_debug.so" } }
+        else       { foreign import sokol_gl_clib { "sokol_gl_linux_x64_gl_release.so" } }
+    } else {
+        when DEBUG { foreign import sokol_gl_clib { "sokol_gl_linux_x64_gl_debug.a" } }
+        else       { foreign import sokol_gl_clib { "sokol_gl_linux_x64_gl_release.a" } }
+    }
+} else when ODIN_ARCH == .wasm32 || ODIN_ARCH == .wasm64p32 {
+    // Feed sokol_gl_wasm_gl_debug.a or sokol_gl_wasm_gl_release.a into emscripten compiler.
+    foreign import sokol_gl_clib { "env.o" }
+} else {
+    #panic("This OS is currently not supported")
+}
+
+@(default_calling_convention="c", link_prefix="sgl_")
+foreign sokol_gl_clib {
+    // setup/shutdown/misc
+    setup :: proc(#by_ptr desc: Desc)  ---
+    shutdown :: proc()  ---
+    rad :: proc(deg: f32) -> f32 ---
+    deg :: proc(rad: f32) -> f32 ---
+    error :: proc() -> Error ---
+    context_error :: proc(ctx: Context) -> Error ---
+    // context functions
+    make_context :: proc(#by_ptr desc: Context_Desc) -> Context ---
+    destroy_context :: proc(ctx: Context)  ---
+    set_context :: proc(ctx: Context)  ---
+    get_context :: proc() -> Context ---
+    default_context :: proc() -> Context ---
+    // get information about recorded vertices and commands in current context
+    num_vertices :: proc() -> c.int ---
+    num_commands :: proc() -> c.int ---
+    // draw recorded commands (call inside a sokol-gfx render pass)
+    draw :: proc()  ---
+    context_draw :: proc(ctx: Context)  ---
+    draw_layer :: proc(#any_int layer_id: c.int)  ---
+    context_draw_layer :: proc(ctx: Context, #any_int layer_id: c.int)  ---
+    // create and destroy pipeline objects
+    make_pipeline :: proc(#by_ptr desc: sg.Pipeline_Desc) -> Pipeline ---
+    context_make_pipeline :: proc(ctx: Context, #by_ptr desc: sg.Pipeline_Desc) -> Pipeline ---
+    destroy_pipeline :: proc(pip: Pipeline)  ---
+    // render state functions
+    defaults :: proc()  ---
+    viewport :: proc(#any_int x: c.int, #any_int y: c.int, #any_int w: c.int, #any_int h: c.int, origin_top_left: bool)  ---
+    viewportf :: proc(x: f32, y: f32, w: f32, h: f32, origin_top_left: bool)  ---
+    scissor_rect :: proc(#any_int x: c.int, #any_int y: c.int, #any_int w: c.int, #any_int h: c.int, origin_top_left: bool)  ---
+    scissor_rectf :: proc(x: f32, y: f32, w: f32, h: f32, origin_top_left: bool)  ---
+    enable_texture :: proc()  ---
+    disable_texture :: proc()  ---
+    texture :: proc(img: sg.Image, smp: sg.Sampler)  ---
+    layer :: proc(#any_int layer_id: c.int)  ---
+    // pipeline stack functions
+    load_default_pipeline :: proc()  ---
+    load_pipeline :: proc(pip: Pipeline)  ---
+    push_pipeline :: proc()  ---
+    pop_pipeline :: proc()  ---
+    // matrix stack functions
+    matrix_mode_modelview :: proc()  ---
+    matrix_mode_projection :: proc()  ---
+    matrix_mode_texture :: proc()  ---
+    load_identity :: proc()  ---
+    load_matrix :: proc(m: ^f32)  ---
+    load_transpose_matrix :: proc(m: ^f32)  ---
+    mult_matrix :: proc(m: ^f32)  ---
+    mult_transpose_matrix :: proc(m: ^f32)  ---
+    rotate :: proc(angle_rad: f32, x: f32, y: f32, z: f32)  ---
+    scale :: proc(x: f32, y: f32, z: f32)  ---
+    translate :: proc(x: f32, y: f32, z: f32)  ---
+    frustum :: proc(l: f32, r: f32, b: f32, t: f32, n: f32, f: f32)  ---
+    ortho :: proc(l: f32, r: f32, b: f32, t: f32, n: f32, f: f32)  ---
+    perspective :: proc(fov_y: f32, aspect: f32, z_near: f32, z_far: f32)  ---
+    lookat :: proc(eye_x: f32, eye_y: f32, eye_z: f32, center_x: f32, center_y: f32, center_z: f32, up_x: f32, up_y: f32, up_z: f32)  ---
+    push_matrix :: proc()  ---
+    pop_matrix :: proc()  ---
+    // these functions only set the internal 'current texcoord / color / point size' (valid inside or outside begin/end)
+    t2f :: proc(u: f32, v: f32)  ---
+    c3f :: proc(r: f32, g: f32, b: f32)  ---
+    c4f :: proc(r: f32, g: f32, b: f32, a: f32)  ---
+    c3b :: proc(r: u8, g: u8, b: u8)  ---
+    c4b :: proc(r: u8, g: u8, b: u8, a: u8)  ---
+    c1i :: proc(rgba: u32)  ---
+    point_size :: proc(s: f32)  ---
+    // define primitives, each begin/end is one draw command
+    begin_points :: proc()  ---
+    begin_lines :: proc()  ---
+    begin_line_strip :: proc()  ---
+    begin_triangles :: proc()  ---
+    begin_triangle_strip :: proc()  ---
+    begin_quads :: proc()  ---
+    v2f :: proc(x: f32, y: f32)  ---
+    v3f :: proc(x: f32, y: f32, z: f32)  ---
+    v2f_t2f :: proc(x: f32, y: f32, u: f32, v: f32)  ---
+    v3f_t2f :: proc(x: f32, y: f32, z: f32, u: f32, v: f32)  ---
+    v2f_c3f :: proc(x: f32, y: f32, r: f32, g: f32, b: f32)  ---
+    v2f_c3b :: proc(x: f32, y: f32, r: u8, g: u8, b: u8)  ---
+    v2f_c4f :: proc(x: f32, y: f32, r: f32, g: f32, b: f32, a: f32)  ---
+    v2f_c4b :: proc(x: f32, y: f32, r: u8, g: u8, b: u8, a: u8)  ---
+    v2f_c1i :: proc(x: f32, y: f32, rgba: u32)  ---
+    v3f_c3f :: proc(x: f32, y: f32, z: f32, r: f32, g: f32, b: f32)  ---
+    v3f_c3b :: proc(x: f32, y: f32, z: f32, r: u8, g: u8, b: u8)  ---
+    v3f_c4f :: proc(x: f32, y: f32, z: f32, r: f32, g: f32, b: f32, a: f32)  ---
+    v3f_c4b :: proc(x: f32, y: f32, z: f32, r: u8, g: u8, b: u8, a: u8)  ---
+    v3f_c1i :: proc(x: f32, y: f32, z: f32, rgba: u32)  ---
+    v2f_t2f_c3f :: proc(x: f32, y: f32, u: f32, v: f32, r: f32, g: f32, b: f32)  ---
+    v2f_t2f_c3b :: proc(x: f32, y: f32, u: f32, v: f32, r: u8, g: u8, b: u8)  ---
+    v2f_t2f_c4f :: proc(x: f32, y: f32, u: f32, v: f32, r: f32, g: f32, b: f32, a: f32)  ---
+    v2f_t2f_c4b :: proc(x: f32, y: f32, u: f32, v: f32, r: u8, g: u8, b: u8, a: u8)  ---
+    v2f_t2f_c1i :: proc(x: f32, y: f32, u: f32, v: f32, rgba: u32)  ---
+    v3f_t2f_c3f :: proc(x: f32, y: f32, z: f32, u: f32, v: f32, r: f32, g: f32, b: f32)  ---
+    v3f_t2f_c3b :: proc(x: f32, y: f32, z: f32, u: f32, v: f32, r: u8, g: u8, b: u8)  ---
+    v3f_t2f_c4f :: proc(x: f32, y: f32, z: f32, u: f32, v: f32, r: f32, g: f32, b: f32, a: f32)  ---
+    v3f_t2f_c4b :: proc(x: f32, y: f32, z: f32, u: f32, v: f32, r: u8, g: u8, b: u8, a: u8)  ---
+    v3f_t2f_c1i :: proc(x: f32, y: f32, z: f32, u: f32, v: f32, rgba: u32)  ---
+    end :: proc()  ---
+}
+
+Log_Item :: enum i32 {
+    OK,
+    MALLOC_FAILED,
+    MAKE_PIPELINE_FAILED,
+    PIPELINE_POOL_EXHAUSTED,
+    ADD_COMMIT_LISTENER_FAILED,
+    CONTEXT_POOL_EXHAUSTED,
+    CANNOT_DESTROY_DEFAULT_CONTEXT,
+}
+
+/*
+    sgl_logger_t
+
+    Used in sgl_desc_t to provide a custom logging and error reporting
+    callback to sokol-gl.
+*/
+Logger :: struct {
+    func : proc "c" (a0: cstring, a1: u32, a2: u32, a3: cstring, a4: u32, a5: cstring, a6: rawptr),
+    user_data : rawptr,
+}
+
+// sokol_gl pipeline handle (created with sgl_make_pipeline())
+Pipeline :: struct {
+    id : u32,
+}
+
+// a context handle (created with sgl_make_context())
+Context :: struct {
+    id : u32,
+}
+
+/*
+    sgl_error_t
+
+    Errors are reset each frame after calling sgl_draw(),
+    get the last error code with sgl_error()
+*/
+Error :: struct {
+    any : bool,
+    vertices_full : bool,
+    uniforms_full : bool,
+    commands_full : bool,
+    stack_overflow : bool,
+    stack_underflow : bool,
+    no_context : bool,
+}
+
+/*
+    sgl_context_desc_t
+
+    Describes the initialization parameters of a rendering context.
+    Creating additional contexts is useful if you want to render
+    in separate sokol-gfx passes.
+*/
+Context_Desc :: struct {
+    max_vertices : c.int,
+    max_commands : c.int,
+    color_format : sg.Pixel_Format,
+    depth_format : sg.Pixel_Format,
+    sample_count : c.int,
+}
+
+/*
+    sgl_allocator_t
+
+    Used in sgl_desc_t to provide custom memory-alloc and -free functions
+    to sokol_gl.h. If memory management should be overridden, both the
+    alloc and free function must be provided (e.g. it's not valid to
+    override one function but not the other).
+*/
+Allocator :: struct {
+    alloc_fn : proc "c" (a0: c.size_t, a1: rawptr) -> rawptr,
+    free_fn : proc "c" (a0: rawptr, a1: rawptr),
+    user_data : rawptr,
+}
+
+Desc :: struct {
+    max_vertices : c.int,
+    max_commands : c.int,
+    context_pool_size : c.int,
+    pipeline_pool_size : c.int,
+    color_format : sg.Pixel_Format,
+    depth_format : sg.Pixel_Format,
+    sample_count : c.int,
+    face_winding : sg.Face_Winding,
+    allocator : Allocator,
+    logger : Logger,
+}
+

thirdparty/sokol/glue/glue.odin

@@ -0,0 +1,164 @@
+// machine generated, do not edit
+
+package sokol_glue
+
+/*
+
+    sokol_glue.h -- glue helper functions for sokol headers
+
+    Project URL: https://github.com/floooh/sokol
+
+    Do this:
+        #define SOKOL_IMPL or
+        #define SOKOL_GLUE_IMPL
+    before you include this file in *one* C or C++ file to create the
+    implementation.
+
+    ...optionally provide the following macros to override defaults:
+
+    SOKOL_ASSERT(c)     - your own assert macro (default: assert(c))
+    SOKOL_GLUE_API_DECL - public function declaration prefix (default: extern)
+    SOKOL_API_DECL      - same as SOKOL_GLUE_API_DECL
+    SOKOL_API_IMPL      - public function implementation prefix (default: -)
+
+    If sokol_glue.h is compiled as a DLL, define the following before
+    including the declaration or implementation:
+
+    SOKOL_DLL
+
+    On Windows, SOKOL_DLL will define SOKOL_GLUE_API_DECL as __declspec(dllexport)
+    or __declspec(dllimport) as needed.
+
+    OVERVIEW
+    ========
+    sokol_glue.h provides glue helper functions between sokol_gfx.h and sokol_app.h,
+    so that sokol_gfx.h doesn't need to depend on sokol_app.h but can be
+    used with different window system glue libraries.
+
+    PROVIDED FUNCTIONS
+    ==================
+
+    sg_environment sglue_environment(void)
+
+        Returns an sg_environment struct initialized by calling sokol_app.h
+        functions. Use this in the sg_setup() call like this:
+
+        sg_setup(&(sg_desc){
+            .environment = sglue_environment(),
+            ...
+        });
+
+    sg_swapchain sglue_swapchain(void)
+
+        Returns an sg_swapchain struct initialized by calling sokol_app.h
+        functions. Use this in sg_begin_pass() for a 'swapchain pass' like
+        this:
+
+        sg_begin_pass(&(sg_pass){ .swapchain = sglue_swapchain(), ... });
+
+    LICENSE
+    =======
+    zlib/libpng license
+
+    Copyright (c) 2018 Andre Weissflog
+
+    This software is provided 'as-is', without any express or implied warranty.
+    In no event will the authors be held liable for any damages arising from the
+    use of this software.
+
+    Permission is granted to anyone to use this software for any purpose,
+    including commercial applications, and to alter it and redistribute it
+    freely, subject to the following restrictions:
+
+        1. The origin of this software must not be misrepresented; you must not
+        claim that you wrote the original software. If you use this software in a
+        product, an acknowledgment in the product documentation would be
+        appreciated but is not required.
+
+        2. Altered source versions must be plainly marked as such, and must not
+        be misrepresented as being the original software.
+
+        3. This notice may not be removed or altered from any source
+        distribution.
+
+*/
+import sg "../gfx"
+
+import "core:c"
+
+_ :: c
+
+SOKOL_DEBUG :: #config(SOKOL_DEBUG, ODIN_DEBUG)
+
+DEBUG :: #config(SOKOL_GLUE_DEBUG, SOKOL_DEBUG)
+USE_GL :: #config(SOKOL_USE_GL, false)
+USE_DLL :: #config(SOKOL_DLL, false)
+
+when ODIN_OS == .Windows {
+    when USE_DLL {
+        when USE_GL {
+            when DEBUG { foreign import sokol_glue_clib { "../sokol_dll_windows_x64_gl_debug.lib" } }
+            else       { foreign import sokol_glue_clib { "../sokol_dll_windows_x64_gl_release.lib" } }
+        } else {
+            when DEBUG { foreign import sokol_glue_clib { "../sokol_dll_windows_x64_d3d11_debug.lib" } }
+            else       { foreign import sokol_glue_clib { "../sokol_dll_windows_x64_d3d11_release.lib" } }
+        }
+    } else {
+        when USE_GL {
+            when DEBUG { foreign import sokol_glue_clib { "sokol_glue_windows_x64_gl_debug.lib" } }
+            else       { foreign import sokol_glue_clib { "sokol_glue_windows_x64_gl_release.lib" } }
+        } else {
+            when DEBUG { foreign import sokol_glue_clib { "sokol_glue_windows_x64_d3d11_debug.lib" } }
+            else       { foreign import sokol_glue_clib { "sokol_glue_windows_x64_d3d11_release.lib" } }
+        }
+    }
+} else when ODIN_OS == .Darwin {
+    when USE_DLL {
+             when  USE_GL && ODIN_ARCH == .arm64 &&  DEBUG { foreign import sokol_glue_clib { "../dylib/sokol_dylib_macos_arm64_gl_debug.dylib" } }
+        else when  USE_GL && ODIN_ARCH == .arm64 && !DEBUG { foreign import sokol_glue_clib { "../dylib/sokol_dylib_macos_arm64_gl_release.dylib" } }
+        else when  USE_GL && ODIN_ARCH == .amd64 &&  DEBUG { foreign import sokol_glue_clib { "../dylib/sokol_dylib_macos_x64_gl_debug.dylib" } }
+        else when  USE_GL && ODIN_ARCH == .amd64 && !DEBUG { foreign import sokol_glue_clib { "../dylib/sokol_dylib_macos_x64_gl_release.dylib" } }
+        else when !USE_GL && ODIN_ARCH == .arm64 &&  DEBUG { foreign import sokol_glue_clib { "../dylib/sokol_dylib_macos_arm64_metal_debug.dylib" } }
+        else when !USE_GL && ODIN_ARCH == .arm64 && !DEBUG { foreign import sokol_glue_clib { "../dylib/sokol_dylib_macos_arm64_metal_release.dylib" } }
+        else when !USE_GL && ODIN_ARCH == .amd64 &&  DEBUG { foreign import sokol_glue_clib { "../dylib/sokol_dylib_macos_x64_metal_debug.dylib" } }
+        else when !USE_GL && ODIN_ARCH == .amd64 && !DEBUG { foreign import sokol_glue_clib { "../dylib/sokol_dylib_macos_x64_metal_release.dylib" } }
+    } else {
+        when USE_GL {
+            when ODIN_ARCH == .arm64 {
+                when DEBUG { foreign import sokol_glue_clib { "sokol_glue_macos_arm64_gl_debug.a" } }
+                else       { foreign import sokol_glue_clib { "sokol_glue_macos_arm64_gl_release.a" } }
+            } else {
+                when DEBUG { foreign import sokol_glue_clib { "sokol_glue_macos_x64_gl_debug.a" } }
+                else       { foreign import sokol_glue_clib { "sokol_glue_macos_x64_gl_release.a" } }
+            }
+        } else {
+            when ODIN_ARCH == .arm64 {
+                when DEBUG { foreign import sokol_glue_clib { "sokol_glue_macos_arm64_metal_debug.a" } }
+                else       { foreign import sokol_glue_clib { "sokol_glue_macos_arm64_metal_release.a" } }
+            } else {
+                when DEBUG { foreign import sokol_glue_clib { "sokol_glue_macos_x64_metal_debug.a" } }
+                else       { foreign import sokol_glue_clib { "sokol_glue_macos_x64_metal_release.a" } }
+            }
+        }
+    }
+} else when ODIN_OS == .Linux {
+    when USE_DLL {
+        when DEBUG { foreign import sokol_glue_clib { "sokol_glue_linux_x64_gl_debug.so" } }
+        else       { foreign import sokol_glue_clib { "sokol_glue_linux_x64_gl_release.so" } }
+    } else {
+        when DEBUG { foreign import sokol_glue_clib { "sokol_glue_linux_x64_gl_debug.a" } }
+        else       { foreign import sokol_glue_clib { "sokol_glue_linux_x64_gl_release.a" } }
+    }
+} else when ODIN_ARCH == .wasm32 || ODIN_ARCH == .wasm64p32 {
+    // Feed sokol_glue_wasm_gl_debug.a or sokol_glue_wasm_gl_release.a into emscripten compiler.
+    foreign import sokol_glue_clib { "env.o" }
+} else {
+    #panic("This OS is currently not supported")
+}
+
+@(default_calling_convention="c", link_prefix="sglue_")
+foreign sokol_glue_clib {
+    environment :: proc() -> sg.Environment ---
+    swapchain :: proc() -> sg.Swapchain ---
+}
+

thirdparty/sokol/helpers/allocator.odin

@@ -0,0 +1,38 @@
+package sokol_helpers
+
+// Use native odin allocators in sokol allocator interface
+
+import sapp "../app"
+import sg "../gfx"
+import "base:runtime"
+import "core:c"
+
+Allocator :: struct {
+    alloc_fn:  proc "c" (size: c.size_t, user_data: rawptr) -> rawptr,
+    free_fn:   proc "c" (ptr: rawptr, user_data: rawptr),
+    user_data: rawptr,
+}
+
+// context_ptr: a pointer to a context which persists during the lifetime of the program.
+// Note: you can transmute() this into a logger for any specific sokol library.
+allocator :: proc(context_ptr: ^runtime.Context) -> Allocator {
+    return {
+        alloc_fn = allocator_alloc_proc,
+        free_fn = allocator_free_proc,
+        user_data = cast(rawptr)context_ptr,
+    }
+}
+
+allocator_alloc_proc :: proc "c" (size: c.size_t, user_data: rawptr) -> rawptr {
+    context = (cast(^runtime.Context)user_data)^
+    bytes, err := runtime.mem_alloc(size = int(size))
+    if err != nil {
+        return nil
+    }
+    return raw_data(bytes)
+}
+
+allocator_free_proc :: proc "c" (ptr: rawptr, user_data: rawptr) {
+    context = (cast(^runtime.Context)user_data)^
+    runtime.mem_free(ptr)
+}

thirdparty/sokol/helpers/glue.odin

@@ -0,0 +1,37 @@
+package sokol_helpers
+
+// Alternative native odin implementation of sokol_glue.h, in case you want to minimize C dependencies
+// (since sokol_glue is only a few lines of code)
+
+import sapp "../app"
+import sg "../gfx"
+
+glue_environment :: proc() -> (env: sg.Environment) {
+    env.defaults.color_format = cast(sg.Pixel_Format)sapp.color_format()
+    env.defaults.depth_format = cast(sg.Pixel_Format)sapp.depth_format()
+    env.defaults.sample_count = sapp.sample_count()
+    env.metal.device = sapp.metal_get_device()
+    env.d3d11.device = sapp.d3d11_get_device()
+    env.d3d11.device_context = sapp.d3d11_get_device_context()
+    env.wgpu.device = sapp.wgpu_get_device()
+    return env
+}
+
+glue_swapchain :: proc() -> (swapchain: sg.Swapchain) {
+    swapchain.width = sapp.width()
+    swapchain.height = sapp.height()
+    swapchain.sample_count = sapp.sample_count()
+    swapchain.color_format = cast(sg.Pixel_Format)sapp.color_format()
+    swapchain.depth_format = cast(sg.Pixel_Format)sapp.depth_format()
+    swapchain.metal.current_drawable = sapp.metal_get_current_drawable()
+    swapchain.metal.depth_stencil_texture = sapp.metal_get_depth_stencil_texture()
+    swapchain.metal.msaa_color_texture = sapp.metal_get_msaa_color_texture()
+    swapchain.d3d11.render_view = sapp.d3d11_get_render_view()
+    swapchain.d3d11.resolve_view = sapp.d3d11_get_resolve_view()
+    swapchain.d3d11.depth_stencil_view = sapp.d3d11_get_depth_stencil_view()
+    swapchain.wgpu.render_view = sapp.wgpu_get_render_view()
+    swapchain.wgpu.resolve_view = sapp.wgpu_get_resolve_view()
+    swapchain.wgpu.depth_stencil_view = sapp.wgpu_get_depth_stencil_view()
+    swapchain.gl.framebuffer = sapp.gl_get_framebuffer()
+    return swapchain
+}

thirdparty/sokol/helpers/logger.odin

@@ -0,0 +1,59 @@
+package sokol_helpers
+
+// Pass sokol logs into native odin logging system
+
+import sapp "../app"
+import sg "../gfx"
+import "base:runtime"
+import "core:log"
+
+Logger :: struct {
+    func:      proc "c" (
+        tag: cstring,
+        log_level: u32,
+        log_item: u32,
+        message: cstring,
+        line_nr: u32,
+        filename: cstring,
+        user_data: rawptr,
+    ),
+    user_data: rawptr,
+}
+
+// context_ptr: a pointer to a context which persists during the lifetime of the program.
+// Note: you can transmute() this into a logger for any specific sokol library.
+logger :: proc "contextless" (context_ptr: ^runtime.Context) -> Logger {
+    return {func = logger_proc, user_data = cast(rawptr)context_ptr}
+}
+
+logger_proc :: proc "c" (
+    tag: cstring,
+    log_level: u32,
+    log_item: u32,
+    message: cstring,
+    line_nr: u32,
+    filename: cstring,
+    user_data: rawptr,
+) {
+    context = (cast(^runtime.Context)user_data)^
+
+    loc := runtime.Source_Code_Location {
+        file_path = string(filename),
+        line      = i32(line_nr),
+    }
+    
+    level: log.Level
+    switch log_level {
+    case 0:
+        log.panicf("Sokol Panic: (%i) %s: %s", log_item, tag, message, location = loc)
+
+    case 1:
+        level = .Error
+    case 2:
+        level = .Warning
+    case:
+        level = .Info
+    }
+
+    log.logf(level, "(%i) %s: %s", log_item, tag, message, location = loc)
+}

thirdparty/sokol/log/log.odin

@@ -0,0 +1,193 @@
+// machine generated, do not edit
+
+package sokol_log
+
+/*
+
+    sokol_log.h -- common logging callback for sokol headers
+
+    Project URL: https://github.com/floooh/sokol
+
+    Example code: https://github.com/floooh/sokol-samples
+
+    Do this:
+        #define SOKOL_IMPL or
+        #define SOKOL_LOG_IMPL
+    before you include this file in *one* C or C++ file to create the
+    implementation.
+
+    Optionally provide the following defines when building the implementation:
+
+    SOKOL_ASSERT(c)             - your own assert macro (default: assert(c))
+    SOKOL_UNREACHABLE()         - a guard macro for unreachable code (default: assert(false))
+    SOKOL_LOG_API_DECL          - public function declaration prefix (default: extern)
+    SOKOL_API_DECL              - same as SOKOL_GFX_API_DECL
+    SOKOL_API_IMPL              - public function implementation prefix (default: -)
+
+    Optionally define the following for verbose output:
+
+    SOKOL_DEBUG         - by default this is defined if _DEBUG is defined
+
+
+    OVERVIEW
+    ========
+    sokol_log.h provides a default logging callback for other sokol headers.
+
+    To use the default log callback, just include sokol_log.h and provide
+    a function pointer to the 'slog_func' function when setting up the
+    sokol library:
+
+    For instance with sokol_audio.h:
+
+        #include "sokol_log.h"
+        ...
+        saudio_setup(&(saudio_desc){ .logger.func = slog_func });
+
+    Logging output goes to stderr and/or a platform specific logging subsystem
+    (which means that in some scenarios you might see logging messages duplicated):
+
+        - Windows: stderr + OutputDebugStringA()
+        - macOS/iOS/Linux: stderr + syslog()
+        - Emscripten: console.info()/warn()/error()
+        - Android: __android_log_write()
+
+    On Windows with sokol_app.h also note the runtime config items to make
+    stdout/stderr output visible on the console for WinMain() applications
+    via sapp_desc.win32_console_attach or sapp_desc.win32_console_create,
+    however when running in a debugger on Windows, the logging output should
+    show up on the debug output UI panel.
+
+    In debug mode, a log message might look like this:
+
+        [sspine][error][id:12] /Users/floh/projects/sokol/util/sokol_spine.h:3472:0:
+            SKELETON_DESC_NO_ATLAS: no atlas object provided in sspine_skeleton_desc.atlas
+
+    The source path and line number is formatted like compiler errors, in some IDEs (like VSCode)
+    such error messages are clickable.
+
+    In release mode, logging is less verbose as to not bloat the executable with string data, but you still get
+    enough information to identify the type and location of an error:
+
+        [sspine][error][id:12][line:3472]
+
+    RULES FOR WRITING YOUR OWN LOGGING FUNCTION
+    ===========================================
+    - must be re-entrant because it might be called from different threads
+    - must treat **all** provided string pointers as optional (can be null)
+    - don't store the string pointers, copy the string data instead
+    - must not return for log level panic
+
+    LICENSE
+    =======
+    zlib/libpng license
+
+    Copyright (c) 2023 Andre Weissflog
+
+    This software is provided 'as-is', without any express or implied warranty.
+    In no event will the authors be held liable for any damages arising from the
+    use of this software.
+
+    Permission is granted to anyone to use this software for any purpose,
+    including commercial applications, and to alter it and redistribute it
+    freely, subject to the following restrictions:
+
+        1. The origin of this software must not be misrepresented; you must not
+        claim that you wrote the original software. If you use this software in a
+        product, an acknowledgment in the product documentation would be
+        appreciated but is not required.
+
+        2. Altered source versions must be plainly marked as such, and must not
+        be misrepresented as being the original software.
+
+        3. This notice may not be removed or altered from any source
+        distribution.
+
+*/
+
+import "core:c"
+
+_ :: c
+
+SOKOL_DEBUG :: #config(SOKOL_DEBUG, ODIN_DEBUG)
+
+DEBUG :: #config(SOKOL_LOG_DEBUG, SOKOL_DEBUG)
+USE_GL :: #config(SOKOL_USE_GL, false)
+USE_DLL :: #config(SOKOL_DLL, false)
+
+when ODIN_OS == .Windows {
+    when USE_DLL {
+        when USE_GL {
+            when DEBUG { foreign import sokol_log_clib { "../sokol_dll_windows_x64_gl_debug.lib" } }
+            else       { foreign import sokol_log_clib { "../sokol_dll_windows_x64_gl_release.lib" } }
+        } else {
+            when DEBUG { foreign import sokol_log_clib { "../sokol_dll_windows_x64_d3d11_debug.lib" } }
+            else       { foreign import sokol_log_clib { "../sokol_dll_windows_x64_d3d11_release.lib" } }
+        }
+    } else {
+        when USE_GL {
+            when DEBUG { foreign import sokol_log_clib { "sokol_log_windows_x64_gl_debug.lib" } }
+            else       { foreign import sokol_log_clib { "sokol_log_windows_x64_gl_release.lib" } }
+        } else {
+            when DEBUG { foreign import sokol_log_clib { "sokol_log_windows_x64_d3d11_debug.lib" } }
+            else       { foreign import sokol_log_clib { "sokol_log_windows_x64_d3d11_release.lib" } }
+        }
+    }
+} else when ODIN_OS == .Darwin {
+    when USE_DLL {
+             when  USE_GL && ODIN_ARCH == .arm64 &&  DEBUG { foreign import sokol_log_clib { "../dylib/sokol_dylib_macos_arm64_gl_debug.dylib" } }
+        else when  USE_GL && ODIN_ARCH == .arm64 && !DEBUG { foreign import sokol_log_clib { "../dylib/sokol_dylib_macos_arm64_gl_release.dylib" } }
+        else when  USE_GL && ODIN_ARCH == .amd64 &&  DEBUG { foreign import sokol_log_clib { "../dylib/sokol_dylib_macos_x64_gl_debug.dylib" } }
+        else when  USE_GL && ODIN_ARCH == .amd64 && !DEBUG { foreign import sokol_log_clib { "../dylib/sokol_dylib_macos_x64_gl_release.dylib" } }
+        else when !USE_GL && ODIN_ARCH == .arm64 &&  DEBUG { foreign import sokol_log_clib { "../dylib/sokol_dylib_macos_arm64_metal_debug.dylib" } }
+        else when !USE_GL && ODIN_ARCH == .arm64 && !DEBUG { foreign import sokol_log_clib { "../dylib/sokol_dylib_macos_arm64_metal_release.dylib" } }
+        else when !USE_GL && ODIN_ARCH == .amd64 &&  DEBUG { foreign import sokol_log_clib { "../dylib/sokol_dylib_macos_x64_metal_debug.dylib" } }
+        else when !USE_GL && ODIN_ARCH == .amd64 && !DEBUG { foreign import sokol_log_clib { "../dylib/sokol_dylib_macos_x64_metal_release.dylib" } }
+    } else {
+        when USE_GL {
+            when ODIN_ARCH == .arm64 {
+                when DEBUG { foreign import sokol_log_clib { "sokol_log_macos_arm64_gl_debug.a" } }
+                else       { foreign import sokol_log_clib { "sokol_log_macos_arm64_gl_release.a" } }
+            } else {
+                when DEBUG { foreign import sokol_log_clib { "sokol_log_macos_x64_gl_debug.a" } }
+                else       { foreign import sokol_log_clib { "sokol_log_macos_x64_gl_release.a" } }
+            }
+        } else {
+            when ODIN_ARCH == .arm64 {
+                when DEBUG { foreign import sokol_log_clib { "sokol_log_macos_arm64_metal_debug.a" } }
+                else       { foreign import sokol_log_clib { "sokol_log_macos_arm64_metal_release.a" } }
+            } else {
+                when DEBUG { foreign import sokol_log_clib { "sokol_log_macos_x64_metal_debug.a" } }
+                else       { foreign import sokol_log_clib { "sokol_log_macos_x64_metal_release.a" } }
+            }
+        }
+    }
+} else when ODIN_OS == .Linux {
+    when USE_DLL {
+        when DEBUG { foreign import sokol_log_clib { "sokol_log_linux_x64_gl_debug.so" } }
+        else       { foreign import sokol_log_clib { "sokol_log_linux_x64_gl_release.so" } }
+    } else {
+        when DEBUG { foreign import sokol_log_clib { "sokol_log_linux_x64_gl_debug.a" } }
+        else       { foreign import sokol_log_clib { "sokol_log_linux_x64_gl_release.a" } }
+    }
+} else when ODIN_ARCH == .wasm32 || ODIN_ARCH == .wasm64p32 {
+    // Feed sokol_log_wasm_gl_debug.a or sokol_log_wasm_gl_release.a into emscripten compiler.
+    foreign import sokol_log_clib { "env.o" }
+} else {
+    #panic("This OS is currently not supported")
+}
+
+@(default_calling_convention="c", link_prefix="slog_")
+foreign sokol_log_clib {
+    /*
+        Plug this function into the 'logger.func' struct item when initializing any of the sokol
+        headers. For instance for sokol_audio.h it would look like this:
+
+        saudio_setup(&(saudio_desc){
+            .logger = {
+                .func = slog_func
+            }
+        });
+    */
+    func :: proc(tag: cstring, log_level: u32, log_item: u32, message: cstring, line_nr: u32, filename: cstring, user_data: rawptr)  ---
+}
+

thirdparty/sokol/shape/shape.odin

@@ -0,0 +1,581 @@
+// machine generated, do not edit
+
+package sokol_shape
+
+/*
+
+    sokol_shape.h -- create simple primitive shapes for sokol_gfx.h
+
+    Project URL: https://github.com/floooh/sokol
+
+    Do this:
+        #define SOKOL_IMPL or
+        #define SOKOL_SHAPE_IMPL
+    before you include this file in *one* C or C++ file to create the
+    implementation.
+
+    Include the following headers before including sokol_shape.h:
+
+        sokol_gfx.h
+
+    ...optionally provide the following macros to override defaults:
+
+    SOKOL_ASSERT(c)     - your own assert macro (default: assert(c))
+    SOKOL_SHAPE_API_DECL- public function declaration prefix (default: extern)
+    SOKOL_API_DECL      - same as SOKOL_SHAPE_API_DECL
+    SOKOL_API_IMPL      - public function implementation prefix (default: -)
+
+    If sokol_shape.h is compiled as a DLL, define the following before
+    including the declaration or implementation:
+
+    SOKOL_DLL
+
+    On Windows, SOKOL_DLL will define SOKOL_SHAPE_API_DECL as __declspec(dllexport)
+    or __declspec(dllimport) as needed.
+
+    FEATURE OVERVIEW
+    ================
+    sokol_shape.h creates vertices and indices for simple shapes and
+    builds structs which can be plugged into sokol-gfx resource
+    creation functions:
+
+    The following shape types are supported:
+
+        - plane
+        - cube
+        - sphere (with poles, not geodesic)
+        - cylinder
+        - torus (donut)
+
+    Generated vertices look like this:
+
+        typedef struct sshape_vertex_t {
+            float x, y, z;
+            uint32_t normal;        // packed normal as BYTE4N
+            uint16_t u, v;          // packed uv coords as USHORT2N
+            uint32_t color;         // packed color as UBYTE4N (r,g,b,a);
+        } sshape_vertex_t;
+
+    Indices are generally 16-bits wide (SG_INDEXTYPE_UINT16) and the indices
+    are written as triangle-lists (SG_PRIMITIVETYPE_TRIANGLES).
+
+    EXAMPLES:
+    =========
+
+    Create multiple shapes into the same vertex- and index-buffer and
+    render with separate draw calls:
+
+    https://github.com/floooh/sokol-samples/blob/master/sapp/shapes-sapp.c
+
+    Same as the above, but pre-transform shapes and merge them into a single
+    shape that's rendered with a single draw call.
+
+    https://github.com/floooh/sokol-samples/blob/master/sapp/shapes-transform-sapp.c
+
+    STEP-BY-STEP:
+    =============
+
+    Setup an sshape_buffer_t struct with pointers to memory buffers where
+    generated vertices and indices will be written to:
+
+    ```c
+    sshape_vertex_t vertices[512];
+    uint16_t indices[4096];
+
+    sshape_buffer_t buf = {
+        .vertices = {
+            .buffer = SSHAPE_RANGE(vertices),
+        },
+        .indices = {
+            .buffer = SSHAPE_RANGE(indices),
+        }
+    };
+    ```
+
+    To find out how big those memory buffers must be (in case you want
+    to allocate dynamically) call the following functions:
+
+    ```c
+    sshape_sizes_t sshape_plane_sizes(uint32_t tiles);
+    sshape_sizes_t sshape_box_sizes(uint32_t tiles);
+    sshape_sizes_t sshape_sphere_sizes(uint32_t slices, uint32_t stacks);
+    sshape_sizes_t sshape_cylinder_sizes(uint32_t slices, uint32_t stacks);
+    sshape_sizes_t sshape_torus_sizes(uint32_t sides, uint32_t rings);
+    ```
+
+    The returned sshape_sizes_t struct contains vertex- and index-counts
+    as well as the equivalent buffer sizes in bytes. For instance:
+
+    ```c
+    sshape_sizes_t sizes = sshape_sphere_sizes(36, 12);
+    uint32_t num_vertices = sizes.vertices.num;
+    uint32_t num_indices = sizes.indices.num;
+    uint32_t vertex_buffer_size = sizes.vertices.size;
+    uint32_t index_buffer_size = sizes.indices.size;
+    ```
+
+    With the sshape_buffer_t struct that was setup earlier, call any
+    of the shape-builder functions:
+
+    ```c
+    sshape_buffer_t sshape_build_plane(const sshape_buffer_t* buf, const sshape_plane_t* params);
+    sshape_buffer_t sshape_build_box(const sshape_buffer_t* buf, const sshape_box_t* params);
+    sshape_buffer_t sshape_build_sphere(const sshape_buffer_t* buf, const sshape_sphere_t* params);
+    sshape_buffer_t sshape_build_cylinder(const sshape_buffer_t* buf, const sshape_cylinder_t* params);
+    sshape_buffer_t sshape_build_torus(const sshape_buffer_t* buf, const sshape_torus_t* params);
+    ```
+
+    Note how the sshape_buffer_t struct is both an input value and the
+    return value. This can be used to append multiple shapes into the
+    same vertex- and index-buffers (more on this later).
+
+    The second argument is a struct which holds creation parameters.
+
+    For instance to build a sphere with radius 2, 36 "cake slices" and 12 stacks:
+
+    ```c
+    sshape_buffer_t buf = ...;
+    buf = sshape_build_sphere(&buf, &(sshape_sphere_t){
+        .radius = 2.0f,
+        .slices = 36,
+        .stacks = 12,
+    });
+    ```
+
+    If the provided buffers are big enough to hold all generated vertices and
+    indices, the "valid" field in the result will be true:
+
+    ```c
+    assert(buf.valid);
+    ```
+
+    The shape creation parameters have "useful defaults", refer to the
+    actual C struct declarations below to look up those defaults.
+
+    You can also provide additional creation parameters, like a common vertex
+    color, a debug-helper to randomize colors, tell the shape builder function
+    to merge the new shape with the previous shape into the same draw-element-range,
+    or a 4x4 transform matrix to move, rotate and scale the generated vertices:
+
+    ```c
+    sshape_buffer_t buf = ...;
+    buf = sshape_build_sphere(&buf, &(sshape_sphere_t){
+        .radius = 2.0f,
+        .slices = 36,
+        .stacks = 12,
+        // merge with previous shape into a single element-range
+        .merge = true,
+        // set vertex color to red+opaque
+        .color = sshape_color_4f(1.0f, 0.0f, 0.0f, 1.0f),
+        // set position to y = 2.0
+        .transform = {
+            .m = {
+                { 1.0f, 0.0f, 0.0f, 0.0f },
+                { 0.0f, 1.0f, 0.0f, 0.0f },
+                { 0.0f, 0.0f, 1.0f, 0.0f },
+                { 0.0f, 2.0f, 0.0f, 1.0f },
+            }
+        }
+    });
+    assert(buf.valid);
+    ```
+
+    The following helper functions can be used to build a packed
+    color value or to convert from external matrix types:
+
+    ```c
+    uint32_t sshape_color_4f(float r, float g, float b, float a);
+    uint32_t sshape_color_3f(float r, float g, float b);
+    uint32_t sshape_color_4b(uint8_t r, uint8_t g, uint8_t b, uint8_t a);
+    uint32_t sshape_color_3b(uint8_t r, uint8_t g, uint8_t b);
+    sshape_mat4_t sshape_mat4(const float m[16]);
+    sshape_mat4_t sshape_mat4_transpose(const float m[16]);
+    ```
+
+    After the shape builder function has been called, the following functions
+    are used to extract the build result for plugging into sokol_gfx.h:
+
+    ```c
+    sshape_element_range_t sshape_element_range(const sshape_buffer_t* buf);
+    sg_buffer_desc sshape_vertex_buffer_desc(const sshape_buffer_t* buf);
+    sg_buffer_desc sshape_index_buffer_desc(const sshape_buffer_t* buf);
+    sg_vertex_buffer_layout_state sshape_vertex_buffer_layout_state(void);
+    sg_vertex_attr_state sshape_position_vertex_attr_state(void);
+    sg_vertex_attr_state sshape_normal_vertex_attr_state(void);
+    sg_vertex_attr_state sshape_texcoord_vertex_attr_state(void);
+    sg_vertex_attr_state sshape_color_vertex_attr_state(void);
+    ```
+
+    The sshape_element_range_t struct contains the base-index and number of
+    indices which can be plugged into the sg_draw() call:
+
+    ```c
+    sshape_element_range_t elms = sshape_element_range(&buf);
+    ...
+    sg_draw(elms.base_element, elms.num_elements, 1);
+    ```
+
+    To create sokol-gfx vertex- and index-buffers from the generated
+    shape data:
+
+    ```c
+    // create sokol-gfx vertex buffer
+    sg_buffer_desc vbuf_desc = sshape_vertex_buffer_desc(&buf);
+    sg_buffer vbuf = sg_make_buffer(&vbuf_desc);
+
+    // create sokol-gfx index buffer
+    sg_buffer_desc ibuf_desc = sshape_index_buffer_desc(&buf);
+    sg_buffer ibuf = sg_make_buffer(&ibuf_desc);
+    ```
+
+    The remaining functions are used to populate the vertex-layout item
+    in sg_pipeline_desc, note that these functions don't depend on the
+    created geometry, they always return the same result:
+
+    ```c
+    sg_pipeline pip = sg_make_pipeline(&(sg_pipeline_desc){
+        .layout = {
+            .buffers[0] = sshape_vertex_buffer_layout_state(),
+            .attrs = {
+                [0] = sshape_position_vertex_attr_state(),
+                [1] = ssape_normal_vertex_attr_state(),
+                [2] = sshape_texcoord_vertex_attr_state(),
+                [3] = sshape_color_vertex_attr_state()
+            }
+        },
+        ...
+    });
+    ```
+
+    Note that you don't have to use all generated vertex attributes in the
+    pipeline's vertex layout, the sg_vertex_buffer_layout_state struct returned
+    by sshape_vertex_buffer_layout_state() contains the correct vertex stride
+    to skip vertex components.
+
+    WRITING MULTIPLE SHAPES INTO THE SAME BUFFER
+    ============================================
+    You can merge multiple shapes into the same vertex- and
+    index-buffers and either render them as a single shape, or
+    in separate draw calls.
+
+    To build a single shape made of two cubes which can be rendered
+    in a single draw-call:
+
+    ```
+    sshape_vertex_t vertices[128];
+    uint16_t indices[16];
+
+    sshape_buffer_t buf = {
+        .vertices.buffer = SSHAPE_RANGE(vertices),
+        .indices.buffer  = SSHAPE_RANGE(indices)
+    };
+
+    // first cube at pos x=-2.0 (with default size of 1x1x1)
+    buf = sshape_build_cube(&buf, &(sshape_box_t){
+        .transform = {
+            .m = {
+                { 1.0f, 0.0f, 0.0f, 0.0f },
+                { 0.0f, 1.0f, 0.0f, 0.0f },
+                { 0.0f, 0.0f, 1.0f, 0.0f },
+                {-2.0f, 0.0f, 0.0f, 1.0f },
+            }
+        }
+    });
+    // ...and append another cube at pos pos=+1.0
+    // NOTE the .merge = true, this tells the shape builder
+    // function to not advance the current shape start offset
+    buf = sshape_build_cube(&buf, &(sshape_box_t){
+        .merge = true,
+        .transform = {
+            .m = {
+                { 1.0f, 0.0f, 0.0f, 0.0f },
+                { 0.0f, 1.0f, 0.0f, 0.0f },
+                { 0.0f, 0.0f, 1.0f, 0.0f },
+                {-2.0f, 0.0f, 0.0f, 1.0f },
+            }
+        }
+    });
+    assert(buf.valid);
+
+    // skipping buffer- and pipeline-creation...
+
+    sshape_element_range_t elms = sshape_element_range(&buf);
+    sg_draw(elms.base_element, elms.num_elements, 1);
+    ```
+
+    To render the two cubes in separate draw-calls, the element-ranges used
+    in the sg_draw() calls must be captured right after calling the
+    builder-functions:
+
+    ```c
+    sshape_vertex_t vertices[128];
+    uint16_t indices[16];
+    sshape_buffer_t buf = {
+        .vertices.buffer = SSHAPE_RANGE(vertices),
+        .indices.buffer = SSHAPE_RANGE(indices)
+    };
+
+    // build a red cube...
+    buf = sshape_build_cube(&buf, &(sshape_box_t){
+        .color = sshape_color_3b(255, 0, 0)
+    });
+    sshape_element_range_t red_cube = sshape_element_range(&buf);
+
+    // append a green cube to the same vertex-/index-buffer:
+    buf = sshape_build_cube(&bud, &sshape_box_t){
+        .color = sshape_color_3b(0, 255, 0);
+    });
+    sshape_element_range_t green_cube = sshape_element_range(&buf);
+
+    // skipping buffer- and pipeline-creation...
+
+    sg_draw(red_cube.base_element, red_cube.num_elements, 1);
+    sg_draw(green_cube.base_element, green_cube.num_elements, 1);
+    ```
+
+    ...that's about all :)
+
+    LICENSE
+    =======
+    zlib/libpng license
+
+    Copyright (c) 2020 Andre Weissflog
+
+    This software is provided 'as-is', without any express or implied warranty.
+    In no event will the authors be held liable for any damages arising from the
+    use of this software.
+
+    Permission is granted to anyone to use this software for any purpose,
+    including commercial applications, and to alter it and redistribute it
+    freely, subject to the following restrictions:
+
+        1. The origin of this software must not be misrepresented; you must not
+        claim that you wrote the original software. If you use this software in a
+        product, an acknowledgment in the product documentation would be
+        appreciated but is not required.
+
+        2. Altered source versions must be plainly marked as such, and must not
+        be misrepresented as being the original software.
+
+        3. This notice may not be removed or altered from any source
+        distribution.
+
+*/
+import sg "../gfx"
+
+import "core:c"
+
+_ :: c
+
+SOKOL_DEBUG :: #config(SOKOL_DEBUG, ODIN_DEBUG)
+
+DEBUG :: #config(SOKOL_SHAPE_DEBUG, SOKOL_DEBUG)
+USE_GL :: #config(SOKOL_USE_GL, false)
+USE_DLL :: #config(SOKOL_DLL, false)
+
+when ODIN_OS == .Windows {
+    when USE_DLL {
+        when USE_GL {
+            when DEBUG { foreign import sokol_shape_clib { "../sokol_dll_windows_x64_gl_debug.lib" } }
+            else       { foreign import sokol_shape_clib { "../sokol_dll_windows_x64_gl_release.lib" } }
+        } else {
+            when DEBUG { foreign import sokol_shape_clib { "../sokol_dll_windows_x64_d3d11_debug.lib" } }
+            else       { foreign import sokol_shape_clib { "../sokol_dll_windows_x64_d3d11_release.lib" } }
+        }
+    } else {
+        when USE_GL {
+            when DEBUG { foreign import sokol_shape_clib { "sokol_shape_windows_x64_gl_debug.lib" } }
+            else       { foreign import sokol_shape_clib { "sokol_shape_windows_x64_gl_release.lib" } }
+        } else {
+            when DEBUG { foreign import sokol_shape_clib { "sokol_shape_windows_x64_d3d11_debug.lib" } }
+            else       { foreign import sokol_shape_clib { "sokol_shape_windows_x64_d3d11_release.lib" } }
+        }
+    }
+} else when ODIN_OS == .Darwin {
+    when USE_DLL {
+             when  USE_GL && ODIN_ARCH == .arm64 &&  DEBUG { foreign import sokol_shape_clib { "../dylib/sokol_dylib_macos_arm64_gl_debug.dylib" } }
+        else when  USE_GL && ODIN_ARCH == .arm64 && !DEBUG { foreign import sokol_shape_clib { "../dylib/sokol_dylib_macos_arm64_gl_release.dylib" } }
+        else when  USE_GL && ODIN_ARCH == .amd64 &&  DEBUG { foreign import sokol_shape_clib { "../dylib/sokol_dylib_macos_x64_gl_debug.dylib" } }
+        else when  USE_GL && ODIN_ARCH == .amd64 && !DEBUG { foreign import sokol_shape_clib { "../dylib/sokol_dylib_macos_x64_gl_release.dylib" } }
+        else when !USE_GL && ODIN_ARCH == .arm64 &&  DEBUG { foreign import sokol_shape_clib { "../dylib/sokol_dylib_macos_arm64_metal_debug.dylib" } }
+        else when !USE_GL && ODIN_ARCH == .arm64 && !DEBUG { foreign import sokol_shape_clib { "../dylib/sokol_dylib_macos_arm64_metal_release.dylib" } }
+        else when !USE_GL && ODIN_ARCH == .amd64 &&  DEBUG { foreign import sokol_shape_clib { "../dylib/sokol_dylib_macos_x64_metal_debug.dylib" } }
+        else when !USE_GL && ODIN_ARCH == .amd64 && !DEBUG { foreign import sokol_shape_clib { "../dylib/sokol_dylib_macos_x64_metal_release.dylib" } }
+    } else {
+        when USE_GL {
+            when ODIN_ARCH == .arm64 {
+                when DEBUG { foreign import sokol_shape_clib { "sokol_shape_macos_arm64_gl_debug.a" } }
+                else       { foreign import sokol_shape_clib { "sokol_shape_macos_arm64_gl_release.a" } }
+            } else {
+                when DEBUG { foreign import sokol_shape_clib { "sokol_shape_macos_x64_gl_debug.a" } }
+                else       { foreign import sokol_shape_clib { "sokol_shape_macos_x64_gl_release.a" } }
+            }
+        } else {
+            when ODIN_ARCH == .arm64 {
+                when DEBUG { foreign import sokol_shape_clib { "sokol_shape_macos_arm64_metal_debug.a" } }
+                else       { foreign import sokol_shape_clib { "sokol_shape_macos_arm64_metal_release.a" } }
+            } else {
+                when DEBUG { foreign import sokol_shape_clib { "sokol_shape_macos_x64_metal_debug.a" } }
+                else       { foreign import sokol_shape_clib { "sokol_shape_macos_x64_metal_release.a" } }
+            }
+        }
+    }
+} else when ODIN_OS == .Linux {
+    when USE_DLL {
+        when DEBUG { foreign import sokol_shape_clib { "sokol_shape_linux_x64_gl_debug.so" } }
+        else       { foreign import sokol_shape_clib { "sokol_shape_linux_x64_gl_release.so" } }
+    } else {
+        when DEBUG { foreign import sokol_shape_clib { "sokol_shape_linux_x64_gl_debug.a" } }
+        else       { foreign import sokol_shape_clib { "sokol_shape_linux_x64_gl_release.a" } }
+    }
+} else when ODIN_ARCH == .wasm32 || ODIN_ARCH == .wasm64p32 {
+    // Feed sokol_shape_wasm_gl_debug.a or sokol_shape_wasm_gl_release.a into emscripten compiler.
+    foreign import sokol_shape_clib { "env.o" }
+} else {
+    #panic("This OS is currently not supported")
+}
+
+@(default_calling_convention="c", link_prefix="sshape_")
+foreign sokol_shape_clib {
+    // shape builder functions
+    build_plane :: proc(#by_ptr buf: Buffer, #by_ptr params: Plane) -> Buffer ---
+    build_box :: proc(#by_ptr buf: Buffer, #by_ptr params: Box) -> Buffer ---
+    build_sphere :: proc(#by_ptr buf: Buffer, #by_ptr params: Sphere) -> Buffer ---
+    build_cylinder :: proc(#by_ptr buf: Buffer, #by_ptr params: Cylinder) -> Buffer ---
+    build_torus :: proc(#by_ptr buf: Buffer, #by_ptr params: Torus) -> Buffer ---
+    // query required vertex- and index-buffer sizes in bytes
+    plane_sizes :: proc(tiles: u32) -> Sizes ---
+    box_sizes :: proc(tiles: u32) -> Sizes ---
+    sphere_sizes :: proc(slices: u32, stacks: u32) -> Sizes ---
+    cylinder_sizes :: proc(slices: u32, stacks: u32) -> Sizes ---
+    torus_sizes :: proc(sides: u32, rings: u32) -> Sizes ---
+    // extract sokol-gfx desc structs and primitive ranges from build state
+    element_range :: proc(#by_ptr buf: Buffer) -> Element_Range ---
+    vertex_buffer_desc :: proc(#by_ptr buf: Buffer) -> sg.Buffer_Desc ---
+    index_buffer_desc :: proc(#by_ptr buf: Buffer) -> sg.Buffer_Desc ---
+    vertex_buffer_layout_state :: proc() -> sg.Vertex_Buffer_Layout_State ---
+    position_vertex_attr_state :: proc() -> sg.Vertex_Attr_State ---
+    normal_vertex_attr_state :: proc() -> sg.Vertex_Attr_State ---
+    texcoord_vertex_attr_state :: proc() -> sg.Vertex_Attr_State ---
+    color_vertex_attr_state :: proc() -> sg.Vertex_Attr_State ---
+    // helper functions to build packed color value from floats or bytes
+    color_4f :: proc(r: f32, g: f32, b: f32, a: f32) -> u32 ---
+    color_3f :: proc(r: f32, g: f32, b: f32) -> u32 ---
+    color_4b :: proc(r: u8, g: u8, b: u8, a: u8) -> u32 ---
+    color_3b :: proc(r: u8, g: u8, b: u8) -> u32 ---
+    // adapter function for filling matrix struct from generic float[16] array
+    mat4 :: proc(m: ^f32) -> Mat4 ---
+    mat4_transpose :: proc(m: ^f32) -> Mat4 ---
+}
+
+/*
+    sshape_range is a pointer-size-pair struct used to pass memory
+    blobs into sokol-shape. When initialized from a value type
+    (array or struct), use the SSHAPE_RANGE() macro to build
+    an sshape_range struct.
+*/
+Range :: struct {
+    ptr : rawptr,
+    size : c.size_t,
+}
+
+// a 4x4 matrix wrapper struct
+Mat4 :: struct {
+    m : [4][4]f32,
+}
+
+// vertex layout of the generated geometry
+Vertex :: struct {
+    x : f32,
+    y : f32,
+    z : f32,
+    normal : u32,
+    u : u16,
+    v : u16,
+    color : u32,
+}
+
+// a range of draw-elements (sg_draw(int base_element, int num_element, ...))
+Element_Range :: struct {
+    base_element : c.int,
+    num_elements : c.int,
+}
+
+// number of elements and byte size of build actions
+Sizes_Item :: struct {
+    num : u32,
+    size : u32,
+}
+
+Sizes :: struct {
+    vertices : Sizes_Item,
+    indices : Sizes_Item,
+}
+
+// in/out struct to keep track of mesh-build state
+Buffer_Item :: struct {
+    buffer : Range,
+    data_size : c.size_t,
+    shape_offset : c.size_t,
+}
+
+Buffer :: struct {
+    valid : bool,
+    vertices : Buffer_Item,
+    indices : Buffer_Item,
+}
+
+// creation parameters for the different shape types
+Plane :: struct {
+    width : f32,
+    depth : f32,
+    tiles : u16,
+    color : u32,
+    random_colors : bool,
+    merge : bool,
+    transform : Mat4,
+}
+
+Box :: struct {
+    width : f32,
+    height : f32,
+    depth : f32,
+    tiles : u16,
+    color : u32,
+    random_colors : bool,
+    merge : bool,
+    transform : Mat4,
+}
+
+Sphere :: struct {
+    radius : f32,
+    slices : u16,
+    stacks : u16,
+    color : u32,
+    random_colors : bool,
+    merge : bool,
+    transform : Mat4,
+}
+
+Cylinder :: struct {
+    radius : f32,
+    height : f32,
+    slices : u16,
+    stacks : u16,
+    color : u32,
+    random_colors : bool,
+    merge : bool,
+    transform : Mat4,
+}
+
+Torus :: struct {
+    radius : f32,
+    ring_radius : f32,
+    sides : u16,
+    rings : u16,
+    color : u32,
+    random_colors : bool,
+    merge : bool,
+    transform : Mat4,
+}
+

thirdparty/sokol/time/time.odin

@@ -0,0 +1,196 @@
+// machine generated, do not edit
+
+package sokol_time
+
+/*
+
+    sokol_time.h    -- simple cross-platform time measurement
+
+    Project URL: https://github.com/floooh/sokol
+
+    Do this:
+        #define SOKOL_IMPL or
+        #define SOKOL_TIME_IMPL
+    before you include this file in *one* C or C++ file to create the
+    implementation.
+
+    Optionally provide the following defines with your own implementations:
+    SOKOL_ASSERT(c)     - your own assert macro (default: assert(c))
+    SOKOL_TIME_API_DECL - public function declaration prefix (default: extern)
+    SOKOL_API_DECL      - same as SOKOL_TIME_API_DECL
+    SOKOL_API_IMPL      - public function implementation prefix (default: -)
+
+    If sokol_time.h is compiled as a DLL, define the following before
+    including the declaration or implementation:
+
+    SOKOL_DLL
+
+    On Windows, SOKOL_DLL will define SOKOL_TIME_API_DECL as __declspec(dllexport)
+    or __declspec(dllimport) as needed.
+
+    void stm_setup();
+        Call once before any other functions to initialize sokol_time
+        (this calls for instance QueryPerformanceFrequency on Windows)
+
+    uint64_t stm_now();
+        Get current point in time in unspecified 'ticks'. The value that
+        is returned has no relation to the 'wall-clock' time and is
+        not in a specific time unit, it is only useful to compute
+        time differences.
+
+    uint64_t stm_diff(uint64_t new, uint64_t old);
+        Computes the time difference between new and old. This will always
+        return a positive, non-zero value.
+
+    uint64_t stm_since(uint64_t start);
+        Takes the current time, and returns the elapsed time since start
+        (this is a shortcut for "stm_diff(stm_now(), start)")
+
+    uint64_t stm_laptime(uint64_t* last_time);
+        This is useful for measuring frame time and other recurring
+        events. It takes the current time, returns the time difference
+        to the value in last_time, and stores the current time in
+        last_time for the next call. If the value in last_time is 0,
+        the return value will be zero (this usually happens on the
+        very first call).
+
+    uint64_t stm_round_to_common_refresh_rate(uint64_t duration)
+        This oddly named function takes a measured frame time and
+        returns the closest "nearby" common display refresh rate frame duration
+        in ticks. If the input duration isn't close to any common display
+        refresh rate, the input duration will be returned unchanged as a fallback.
+        The main purpose of this function is to remove jitter/inaccuracies from
+        measured frame times, and instead use the display refresh rate as
+        frame duration.
+        NOTE: for more robust frame timing, consider using the
+        sokol_app.h function sapp_frame_duration()
+
+    Use the following functions to convert a duration in ticks into
+    useful time units:
+
+    double stm_sec(uint64_t ticks);
+    double stm_ms(uint64_t ticks);
+    double stm_us(uint64_t ticks);
+    double stm_ns(uint64_t ticks);
+        Converts a tick value into seconds, milliseconds, microseconds
+        or nanoseconds. Note that not all platforms will have nanosecond
+        or even microsecond precision.
+
+    Uses the following time measurement functions under the hood:
+
+    Windows:        QueryPerformanceFrequency() / QueryPerformanceCounter()
+    MacOS/iOS:      mach_absolute_time()
+    emscripten:     emscripten_get_now()
+    Linux+others:   clock_gettime(CLOCK_MONOTONIC)
+
+    zlib/libpng license
+
+    Copyright (c) 2018 Andre Weissflog
+
+    This software is provided 'as-is', without any express or implied warranty.
+    In no event will the authors be held liable for any damages arising from the
+    use of this software.
+
+    Permission is granted to anyone to use this software for any purpose,
+    including commercial applications, and to alter it and redistribute it
+    freely, subject to the following restrictions:
+
+        1. The origin of this software must not be misrepresented; you must not
+        claim that you wrote the original software. If you use this software in a
+        product, an acknowledgment in the product documentation would be
+        appreciated but is not required.
+
+        2. Altered source versions must be plainly marked as such, and must not
+        be misrepresented as being the original software.
+
+        3. This notice may not be removed or altered from any source
+        distribution.
+
+*/
+
+import "core:c"
+
+_ :: c
+
+SOKOL_DEBUG :: #config(SOKOL_DEBUG, ODIN_DEBUG)
+
+DEBUG :: #config(SOKOL_TIME_DEBUG, SOKOL_DEBUG)
+USE_GL :: #config(SOKOL_USE_GL, false)
+USE_DLL :: #config(SOKOL_DLL, false)
+
+when ODIN_OS == .Windows {
+    when USE_DLL {
+        when USE_GL {
+            when DEBUG { foreign import sokol_time_clib { "../sokol_dll_windows_x64_gl_debug.lib" } }
+            else       { foreign import sokol_time_clib { "../sokol_dll_windows_x64_gl_release.lib" } }
+        } else {
+            when DEBUG { foreign import sokol_time_clib { "../sokol_dll_windows_x64_d3d11_debug.lib" } }
+            else       { foreign import sokol_time_clib { "../sokol_dll_windows_x64_d3d11_release.lib" } }
+        }
+    } else {
+        when USE_GL {
+            when DEBUG { foreign import sokol_time_clib { "sokol_time_windows_x64_gl_debug.lib" } }
+            else       { foreign import sokol_time_clib { "sokol_time_windows_x64_gl_release.lib" } }
+        } else {
+            when DEBUG { foreign import sokol_time_clib { "sokol_time_windows_x64_d3d11_debug.lib" } }
+            else       { foreign import sokol_time_clib { "sokol_time_windows_x64_d3d11_release.lib" } }
+        }
+    }
+} else when ODIN_OS == .Darwin {
+    when USE_DLL {
+             when  USE_GL && ODIN_ARCH == .arm64 &&  DEBUG { foreign import sokol_time_clib { "../dylib/sokol_dylib_macos_arm64_gl_debug.dylib" } }
+        else when  USE_GL && ODIN_ARCH == .arm64 && !DEBUG { foreign import sokol_time_clib { "../dylib/sokol_dylib_macos_arm64_gl_release.dylib" } }
+        else when  USE_GL && ODIN_ARCH == .amd64 &&  DEBUG { foreign import sokol_time_clib { "../dylib/sokol_dylib_macos_x64_gl_debug.dylib" } }
+        else when  USE_GL && ODIN_ARCH == .amd64 && !DEBUG { foreign import sokol_time_clib { "../dylib/sokol_dylib_macos_x64_gl_release.dylib" } }
+        else when !USE_GL && ODIN_ARCH == .arm64 &&  DEBUG { foreign import sokol_time_clib { "../dylib/sokol_dylib_macos_arm64_metal_debug.dylib" } }
+        else when !USE_GL && ODIN_ARCH == .arm64 && !DEBUG { foreign import sokol_time_clib { "../dylib/sokol_dylib_macos_arm64_metal_release.dylib" } }
+        else when !USE_GL && ODIN_ARCH == .amd64 &&  DEBUG { foreign import sokol_time_clib { "../dylib/sokol_dylib_macos_x64_metal_debug.dylib" } }
+        else when !USE_GL && ODIN_ARCH == .amd64 && !DEBUG { foreign import sokol_time_clib { "../dylib/sokol_dylib_macos_x64_metal_release.dylib" } }
+    } else {
+        when USE_GL {
+            when ODIN_ARCH == .arm64 {
+                when DEBUG { foreign import sokol_time_clib { "sokol_time_macos_arm64_gl_debug.a" } }
+                else       { foreign import sokol_time_clib { "sokol_time_macos_arm64_gl_release.a" } }
+            } else {
+                when DEBUG { foreign import sokol_time_clib { "sokol_time_macos_x64_gl_debug.a" } }
+                else       { foreign import sokol_time_clib { "sokol_time_macos_x64_gl_release.a" } }
+            }
+        } else {
+            when ODIN_ARCH == .arm64 {
+                when DEBUG { foreign import sokol_time_clib { "sokol_time_macos_arm64_metal_debug.a" } }
+                else       { foreign import sokol_time_clib { "sokol_time_macos_arm64_metal_release.a" } }
+            } else {
+                when DEBUG { foreign import sokol_time_clib { "sokol_time_macos_x64_metal_debug.a" } }
+                else       { foreign import sokol_time_clib { "sokol_time_macos_x64_metal_release.a" } }
+            }
+        }
+    }
+} else when ODIN_OS == .Linux {
+    when USE_DLL {
+        when DEBUG { foreign import sokol_time_clib { "sokol_time_linux_x64_gl_debug.so" } }
+        else       { foreign import sokol_time_clib { "sokol_time_linux_x64_gl_release.so" } }
+    } else {
+        when DEBUG { foreign import sokol_time_clib { "sokol_time_linux_x64_gl_debug.a" } }
+        else       { foreign import sokol_time_clib { "sokol_time_linux_x64_gl_release.a" } }
+    }
+} else when ODIN_ARCH == .wasm32 || ODIN_ARCH == .wasm64p32 {
+    // Feed sokol_time_wasm_gl_debug.a or sokol_time_wasm_gl_release.a into emscripten compiler.
+    foreign import sokol_time_clib { "env.o" }
+} else {
+    #panic("This OS is currently not supported")
+}
+
+@(default_calling_convention="c", link_prefix="stm_")
+foreign sokol_time_clib {
+    setup :: proc()  ---
+    now :: proc() -> u64 ---
+    diff :: proc(new_ticks: u64, old_ticks: u64) -> u64 ---
+    since :: proc(start_ticks: u64) -> u64 ---
+    laptime :: proc(last_time: ^u64) -> u64 ---
+    round_to_common_refresh_rate :: proc(frame_ticks: u64) -> u64 ---
+    sec :: proc(ticks: u64) -> f64 ---
+    ms :: proc(ticks: u64) -> f64 ---
+    us :: proc(ticks: u64) -> f64 ---
+    ns :: proc(ticks: u64) -> f64 ---
+}
+