Day 24 complete

.vscode/bookmarks.json

@@ -14,22 +14,22 @@
 					"label": "Static Data"
 				},
 				{
-					"line": 631,
+					"line": 640,
 					"column": 0,
 					"label": "Timing"
 				},
 				{
-					"line": 1453,
+					"line": 1471,
 					"column": 4,
 					"label": "Main Loop : Audio Processing"
 				},
 				{
-					"line": 1572,
+					"line": 1590,
 					"column": 2,
 					"label": "Main Loop : Timing Update"
 				},
 				{
-					"line": 1656,
+					"line": 1674,
 					"column": 0,
 					"label": "Main Loop : End"
 				}

HandmadeHero.vcxproj

@@ -15,18 +15,20 @@
     </ProjectConfiguration>
   </ItemGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Development|x64'">
-    <IncludePath>$(ProjectDir)project;$(IncludePath)</IncludePath>
+    <IncludePath>$(ProjectDir)project;$(IncludePath);</IncludePath>
     <LibraryPath>$(ProjectDir)data;$(windir)System32;$(LibraryPath)</LibraryPath>
     <NMakeBuildCommandLine>pwsh -ExecutionPolicy Bypass -NoProfile -NonInteractive -File $(ProjectDir)scripts\build.ps1 msvc dev engine</NMakeBuildCommandLine>
     <NMakeCleanCommandLine>pwsh ExecutionPolicy Bypass -NoProfile -NonInteractive -File $(ProjectDir)scripts\clean.ps1</NMakeCleanCommandLine>
     <NMakePreprocessorDefinitions>GEN_TIME;Build_Development;Build_Debug;$(NMakePreprocessorDefinitions)</NMakePreprocessorDefinitions>
-    <ExternalIncludePath>$(VC_IncludePath);$(WindowsSDK_IncludePath)</ExternalIncludePath>
+    <ExternalIncludePath>$(VC_IncludePath);$(WindowsSDK_IncludePath);$(UniversalCRT_IncludePath);</ExternalIncludePath>
     <NMakeReBuildCommandLine>
     </NMakeReBuildCommandLine>
   </PropertyGroup>
   <ItemGroup>
+    <ClInclude Include="project\dependencies\gen.hpp" />
     <ClInclude Include="project\engine\engine.hpp" />
     <ClInclude Include="project\engine\engine_game_api.hpp" />
+    <ClInclude Include="project\gen\engine_symbol_table.hpp" />
     <ClInclude Include="project\handmade.hpp" />
     <ClInclude Include="project\platform\generics.hpp" />
     <ClInclude Include="project\platform\grime.hpp" />
@@ -34,12 +36,13 @@
     <ClInclude Include="project\platform\macros.hpp" />
     <ClInclude Include="project\platform\math_constants.hpp" />
     <ClInclude Include="project\platform\platform.hpp" />
-    <ClInclude Include="project\platform\platform_engine_api.hpp" />
     <ClInclude Include="project\platform\strings.hpp" />
     <ClInclude Include="project\platform\types.hpp" />
     <ClInclude Include="project\platform\win32.hpp" />
   </ItemGroup>
   <ItemGroup>
+    <ClCompile Include="project\codegen\engine_postbuild_gen.cpp" />
+    <ClCompile Include="project\codegen\platform_gen.cpp" />
     <ClCompile Include="project\engine\engine.cpp" />
     <ClCompile Include="project\handmade.cpp" />
     <ClCompile Include="project\handmade_engine.cpp" />
@@ -68,6 +71,11 @@
     <None Include="scripts\helpers\target_arch.psm1" />
     <None Include="scripts\update_deps.ps1" />
   </ItemGroup>
+  <ItemGroup>
+    <Content Include="project\codegen\Readme.md" />
+    <Content Include="project\gen\Readme.md" />
+    <Content Include="scripts\rebuild.ps1" />
+  </ItemGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Development|x64'" Label="Configuration">
     <ConfigurationType>Makefile</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>

docs/Day 024.md

@@ -0,0 +1,5 @@
+# Day 24
+
+Did lots of cleanup & refactoring on my side.
+
+Started to use gencpp to generate the engne module symbol constants for the platform layer.

project/codegen/engine_postbuild_gen.cpp

@@ -18,7 +18,7 @@ using namespace gen;
 
 constexpr StrC fname_handmade_engine_symbols = txt("handmade_engine.symbols");
 
-String get_symbol_from_module_table( FileContents symbol_table, u32 symbol_ID )
+void get_symbols_from_module_table( FileContents symbol_table, Array<String> symbols )
 {
 	struct Token
 	{
@@ -26,11 +26,8 @@ String get_symbol_from_module_table( FileContents symbol_table, u32 symbol_ID )
 		u32         Len;
 	};
 
-	Token tokens[256] = {};
-
 	char const* scanner = rcast( char const*, symbol_table.data );
 	u32 left = symbol_table.size;
-	u32 line = 0;
 	while ( left )
 	{
 		if ( *scanner == '\n' || *scanner == '\r' )
@@ -40,23 +37,17 @@ String get_symbol_from_module_table( FileContents symbol_table, u32 symbol_ID )
 		}
 		else
 		{
-			tokens[line].Ptr = scanner;
+			Token token {};
+			token.Ptr = scanner;
 			while ( left && *scanner != '\r' && *scanner != '\n' )
 			{
 				-- left;
 				++ scanner;
-				++ tokens[line].Len;
+				++ token.Len;
 			}
-
-			if ( line == symbol_ID )
-			{
-				String result = String::make_length( GlobalAllocator, tokens[line].Ptr, tokens[line].Len );
-				return result;
-			}
-			++ line;
+			symbols.append( String::make_length( GlobalAllocator, token.Ptr, token.Len ) );
 		}
 	}
-	return {};
 }
 
 int gen_main()
@@ -74,25 +65,24 @@ int gen_main()
 	builder.print( fmt_newline );
 	builder.print_fmt( "NS_ENGINE_BEGIN\n\n" );
 
-	StrC symbol_on_module_load    = get_symbol_from_module_table( symbol_table, engine::ModuleAPI::Sym_OnModuleReload );
-	StrC symbol_startup           = get_symbol_from_module_table( symbol_table, engine::ModuleAPI::Sym_Startup );
-	StrC symbol_shutdown          = get_symbol_from_module_table( symbol_table, engine::ModuleAPI::Sym_Shutdown );
-	StrC symbol_update_and_render = get_symbol_from_module_table( symbol_table, engine::ModuleAPI::Sym_UpdateAndRender );
-	StrC symbol_update_audio      = get_symbol_from_module_table( symbol_table, engine::ModuleAPI::Sym_UpdateAudio );
+	Array<String> symbols = Array<String>::init_reserve( GlobalAllocator, kilobytes(1) );
+	get_symbols_from_module_table( symbol_table, symbols );
 
-	builder.print( parse_variable( token_fmt( "symbol", symbol_on_module_load, stringize(
+	using ModuleAPI = engine::ModuleAPI;
+
+	builder.print( parse_variable( token_fmt( "symbol", (StrC)symbols[ModuleAPI::Sym_OnModuleReload], stringize(
 		constexpr const Str symbol_on_module_load = str_ascii("<symbol>");
 	))));
-	builder.print( parse_variable( token_fmt( "symbol", symbol_startup, stringize(
+	builder.print( parse_variable( token_fmt( "symbol", (StrC)symbols[ModuleAPI::Sym_Startup], stringize(
 		constexpr const Str symbol_startup = str_ascii("<symbol>");
 	))));
-	builder.print( parse_variable( token_fmt( "symbol", symbol_shutdown, stringize(
+	builder.print( parse_variable( token_fmt( "symbol", (StrC)symbols[ModuleAPI::Sym_Shutdown], stringize(
 		constexpr const Str symbol_shutdown = str_ascii("<symbol>");
 	))));
-	builder.print( parse_variable( token_fmt( "symbol", symbol_update_and_render, stringize(
+	builder.print( parse_variable( token_fmt( "symbol", (StrC)symbols[ModuleAPI::Sym_UpdateAndRender], stringize(
 		constexpr const Str symbol_update_and_render = str_ascii("<symbol>");
 	))));
-	builder.print( parse_variable( token_fmt( "symbol", symbol_update_audio, stringize(
+	builder.print( parse_variable( token_fmt( "symbol", (StrC)symbols[ModuleAPI::Sym_UpdateAudio], stringize(
 		constexpr const Str symbol_update_audio = str_ascii("<symbol>");
 	))));
 

project/engine/engine.cpp

@@ -150,12 +150,13 @@ render_weird_graident(OffscreenBuffer* buffer, u32 x_offset, u32 y_offset )
 			u8 green = scast(u8, y + y_offset - u8(wildcard) % 128);
 			u8 red   = scast(u8, wildcard) % 256 - x * 0.4f;
 		#else
-			u8 blue  = scast(u8, x + x_offset);
-			u8 green = scast(u8, y + y_offset);
-			u8 red   = 0;
+			u8 red   = scast(u8, y + x_offset);
+			u8 green = scast(u8, x + y_offset);
+			u8 blue  = scast(u8, x + y - x_offset - y_offset);
+			//    blue *= 2;
 		#endif
 
-			*pixel++ = u32(red << 16) | u32(green/2 << 16) | blue/2 << 0;
+			*pixel++ = u32(red/2 << 16) | u32(green/6 << 8) | blue/2 << 0;
 		}
 		wildcard += 0.5375f;
 		row += buffer->Pitch;
@@ -197,7 +198,11 @@ render_player( OffscreenBuffer* buffer, s32 pos_x, s32 pos_y )
 internal
 void begin_recording_input( EngineState* state, InputState* input, platform::ModuleAPI* platform_api )
 {
-	state->ActiveInputRecordingFile.Path = str_ascii("test_input.hmi");
+	Str file_name = str_ascii("test_input.hmi");
+	StrPath file_path = {};
+	file_path.concat( platform_api->path_scratch, file_name );
+
+	state->ActiveInputRecordingFile.Path = file_path;
 	state->InputRecordingIndex = 1;
 
 	// TODO(Ed) : If game persist memory is larger than 4 gb, this will need to be done in chunks...
@@ -215,9 +220,11 @@ internal
 void begin_playback_input( EngineState* state, InputState* input, platform::ModuleAPI* platform_api )
 {
 	Str file_name = str_ascii("test_input.hmi");
-	if ( platform_api->file_check_exists( file_name ) )
+	StrPath file_path = {};
+	file_path.concat( platform_api->path_scratch, file_name );
+	if ( platform_api->file_check_exists( file_path ) )
 	{
-		state->ActivePlaybackFile.Path = str_ascii("test_input.hmi");
+		state->ActivePlaybackFile.Path = file_path;
 		state->InputPlayingIndex = 1;
 	}
 
@@ -254,7 +261,7 @@ InputStateSnapshot input_state_snapshot( InputState* input )
 
 		if ( controller->Keyboard )
 		{
-			snapshot.Controllers[idx].Keyboard       = *controller->Keyboard;
+			snapshot.Controllers[idx].Keyboard = *controller->Keyboard;
 		}
 
 		if ( controller->Mouse )

project/platform/platform.hpp

@@ -80,8 +80,9 @@ using FileRewindFn       = void ( File* file );
 
 struct ModuleAPI
 {
-	Str PathRoot;
-	Str PathBinaries;
+	Str path_root;
+	Str path_binaries;
+	Str path_scratch;
 
 #if Build_Development
 	DebugSetPauseRenderingFn* debug_set_pause_rendering;

project/platform/strings.hpp

@@ -22,8 +22,7 @@ struct Str
 		str_append( Len, Data, src.Len, src.Data );
 	}
 
-	static
-	void concast( u32 dest_size, Str* dest, Str const str_a, Str const str_b )
+	void concat( u32 dest_size, Str* dest, Str const str_a, Str const str_b )
 	{
 		str_concat( dest_size, dest->Data
 			, str_a.Len, str_a.Data
@@ -42,8 +41,8 @@ struct Str
 	}
 };
 
-template< u32 capacity >
 // Fixed length raw strings.
+template< u32 capacity >
 struct StrFixed
 {
 	constexpr static u32 Capacity = capacity;
@@ -188,3 +187,5 @@ u32 str_length( char const* str )
 
 	return result;
 }
+
+using StrPath = StrFixed< S16_MAX >;

project/platform/win32.hpp

@@ -84,9 +84,10 @@ enum MB : UINT
 
 enum Mem : DWORD
 {
-	MEM_Commit_Zeroed = MEM_COMMIT,
-	MEM_Reserve	      = MEM_RESERVE,
-	MEM_Release 	  = MEM_RELEASE,
+	MEM_Commit_Zeroed   = MEM_COMMIT,
+	MEM_Reserve	        = MEM_RESERVE,
+	MEM_Release 	    = MEM_RELEASE,
+	MEM_Use_Large_pages = MEM_LARGE_PAGES,
 };
 
 enum Page : DWORD

project/platform/win32_platform.cpp

@@ -97,8 +97,9 @@ struct DirectSoundBuffer
 };
 
 #pragma region Static Data
-global StrFixed< S16_MAX > Path_Root;
-global StrFixed< S16_MAX > Path_Binaries;
+global StrPath Path_Root;
+global StrPath Path_Binaries;
+global StrPath Path_Scratch;
 
 // TODO(Ed) : This is a global for now.
 global b32 Running         = false;
@@ -130,14 +131,19 @@ global f32 Engine_Frame_Target_MS = 1000.f / scast(f32, Engine_Refresh_Hz);
 internal
 FILETIME file_get_last_write_time( char const* path )
 {
+	WIN32_FILE_ATTRIBUTE_DATA engine_dll_file_attributes = {};
+	GetFileAttributesExA( path, GetFileExInfoStandard, & engine_dll_file_attributes );
+
+	return engine_dll_file_attributes.ftLastWriteTime;
+#if 0
 	WIN32_FIND_DATAA dll_file_info = {};
 	HANDLE dll_file_handle = FindFirstFileA( path, & dll_file_info );
 	if ( dll_file_handle == INVALID_HANDLE_VALUE )
 	{
 		FindClose( dll_file_handle );
 	}
-
 	return dll_file_info.ftLastWriteTime;
+#endif
 }
 
 struct AudioTimeMarker
@@ -503,6 +509,9 @@ poll_input( engine::InputState* input, u32 jsl_num_devices, JSL_DeviceHandle* js
 	// Keyboard Polling
 	// Keyboards are unified for now.
 	{
+		// TODO(Ed): this needs to be moved out of heere when frames are detached from polling input.
+		input->Controllers[0].Keyboard = {};
+
 		constexpr u32 is_down = 0x80000000;
 		input_process_digital_btn( & old_keyboard->Q,         & new_keyboard->Q,         GetAsyncKeyState( 'Q' ),       is_down );
 		input_process_digital_btn( & old_keyboard->E,         & new_keyboard->E,         GetAsyncKeyState( 'E' ),       is_down );
@@ -685,7 +694,8 @@ display_buffer_in_window( HDC device_context, u32 window_width, u32 window_heigh
 		, x, y, width, height
 		, x, y, width, height
 	#endif
-		, 0, 0, window_width, window_height
+		, 0, 0, buffer->Width, buffer->Height
+		// , 0, 0, window_width, window_height
 		, 0, 0, buffer->Width, buffer->Height
 		, buffer->Memory, & buffer->Info
 		, DIB_ColorTable_RGB, RO_Source_To_Dest );
@@ -1147,13 +1157,11 @@ WinMain( HINSTANCE instance, HINSTANCE prev_instance, LPSTR commandline, int sho
 	// Memory
 	engine::Memory engine_memory {};
 	{
-		engine_memory.PersistentSize = megabytes( 128 );
-		// engine_memory.FrameSize	     = megabytes( 64 );
-		engine_memory.TransientSize  = gigabytes( 2 );
+		u64 total_size = gigabytes( 4 );
 
-		u64 total_size = engine_memory.PersistentSize
-			// + engine_memory.FrameSize
-			+ engine_memory.TransientSize;
+		engine_memory.PersistentSize = total_size - megabytes( 128 );
+		// engine_memory.FrameSize	     = megabytes( 64 );
+		engine_memory.TransientSize  = total_size - engine_memory.PersistentSize;
 
 	#if Build_Debug
 		void* base_address = rcast(void*, terabytes( 1 ));
@@ -1177,7 +1185,7 @@ WinMain( HINSTANCE instance, HINSTANCE prev_instance, LPSTR commandline, int sho
 	{
 		window_class.style = CS_Horizontal_Redraw | CS_Vertical_Redraw;
 		window_class.lpfnWndProc = main_window_callback;
-		// window_class.cbClsExtra  = ;
+		// window_class.cbClsExtra  = ;about:blank#blocked
 		// window_class.cbWndExtra  = ;
 		window_class.hInstance   = instance;
 		// window_class.hIcon = ;
@@ -1193,13 +1201,13 @@ WinMain( HINSTANCE instance, HINSTANCE prev_instance, LPSTR commandline, int sho
 		}
 
 		window_handle = CreateWindowExW(
-			// WS_EX_LAYERED | WS_EX_TOPMOST,
-			WS_EX_LAYERED,
+			WS_EX_LAYERED | WS_EX_TOPMOST,
+			// WS_EX_LAYERED,
 			window_class.lpszClassName,
 			L"Handmade Hero",
 			WS_Overlapped_Window | WS_Initially_Visible,
 			CW_Use_Default, CW_Use_Default, // x, y
-			1100, 700, // width, height
+			CW_Use_Default, CW_Use_Default, // width, height
 			0, 0,                         // parent, menu
 			instance, 0                   // instance, param
 		);
@@ -1212,7 +1220,7 @@ WinMain( HINSTANCE instance, HINSTANCE prev_instance, LPSTR commandline, int sho
 		}
 	}
 	// WinDimensions dimensions = get_window_dimensions( window_handle );
-	resize_dib_section( &Surface_Back_Buffer, 1280, 720 );
+	resize_dib_section( &Surface_Back_Buffer, 1920, 1080 );
 
 	// Setup pathing
 	StrFixed< S16_MAX > path_pdb_lock {};
@@ -1247,11 +1255,21 @@ WinMain( HINSTANCE instance, HINSTANCE prev_instance, LPSTR commandline, int sho
 		Path_Engine_DLL_InUse.concat( Path_Binaries, FName_Engine_DLL_InUse );
 
 		path_pdb_lock.concat( Path_Binaries, FName_Engine_PDB_Lock );
+
+		Path_Scratch.concat( Path_Root, str_ascii("scratch") );
+		Path_Scratch.Data[ Path_Scratch.Len ] = '\\';
+		++ Path_Scratch.Len;
+
+		CreateDirectoryA( Path_Scratch, 0 );
 	}
 
 	// Prepare platform API
 	ModuleAPI platform_api {};
 	{
+		platform_api.path_root     = Path_Root;
+		platform_api.path_binaries = Path_Binaries;
+		platform_api.path_scratch  = Path_Scratch;
+
 	#if Build_Development
 		platform_api.debug_set_pause_rendering = & debug_set_pause_rendering;
 	#endif

scripts/build.ps1

@@ -201,8 +201,7 @@ if ( $vendor -match "clang" )
 		$map    = join-path $path_build (split-path $map    -Leaf)
 
 		# The PDB file has to also be time-stamped so that we can reload the DLL at runtime
-		$timestamp = Get-Date -Format "yyyy-MM-dd_HH-mm-ss"
-		$pdb       = $binary -replace '\.(exe|dll)$', "_$timestamp.pdb"
+		$pdb    = $binary -replace '\.(exe|dll)$', "_$(get-random).pdb"
 
 		$compiler_args += @(
 			$flag_no_color_diagnostics,
@@ -322,8 +321,7 @@ if ( $vendor -match "msvc" )
 		$map    = join-path $path_build (split-path $map    -Leaf)
 
 		# The PDB file has to also be time-stamped so that we can reload the DLL at runtime
-		$timestamp = Get-Date -Format "yyyy-MM-dd_HH-mm-ss"
-		$pdb       = $binary -replace '\.(exe|dll)$', "_$timestamp.pdb"
+		$pdb    = $binary -replace '\.(exe|dll)$', "_$(get-random).pdb"
 
 		$compiler_args += @(
 			$flag_nologo,