Add assignable allocator support to stb_truetype

thirdparty/stb/src/stb_image.c

@@ -0,0 +1,2 @@
+#define STB_IMAGE_IMPLEMENTATION
+#include "stb_image.h"

thirdparty/stb/src/stb_truetype.h

@@ -412,6 +412,43 @@ int main(int arg, char **argv)
 }
 #endif
 
+#pragma region ODIN: CUSTOM ALLOCATOR
+
+#ifdef STB_TRUETYPE_IMPLEMENTATION
+#define GB_IMPLEMENTATION
+#endif
+#include "gb/gb.h"
+
+#ifdef STBTT_STATIC
+#define STBTT_DEF static
+#else
+#define STBTT_DEF extern
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+STBTT_DEF void stbtt_SetAllocator( gbAllocator allocator );
+
+#ifdef __cplusplus
+}
+#endif
+
+#ifndef STBTT_malloc 
+#define STBTT_malloc(x,u) ((void)(u), gb_alloc(stbtt__allocator, x))
+#define STBTT_free(x,u)   ((void)(u), gb_free(stbtt__allocator, x))
+#endif
+
+#ifdef STB_TRUETYPE_IMPLEMENTATION
+gb_global gbAllocator stbtt__allocator = { gb_heap_allocator_proc, NULL };
+
+STBTT_DEF void stbtt_SetAllocator( gbAllocator allocator ) {
+	stbtt__allocator = allocator;
+}
+#endif
+
+#pragma endregion ODIN: CUSTOM ALLOCATOR
 
 //////////////////////////////////////////////////////////////////////////////
 //////////////////////////////////////////////////////////////////////////////

thirdparty/stb/truetype/stb_truetype.odin

@@ -36,6 +36,37 @@ when ODIN_ARCH == .wasm32 || ODIN_ARCH == .wasm64p32 {
 #assert(size_of(c.int) == size_of(rune))
 #assert(size_of(c.int) == size_of(b32))
 
+//-----------------------------------------------------------------------------
+// CUSTOM: ODIN COMPATIBLE ALLOCATOR
+//-----------------------------------------------------------------------------
+
+gbAllocationType :: enum(i32) {
+	Alloc,
+	Free,
+	FreeAll,
+	Resize,
+}
+
+gbAllocatorProc :: #type proc(allocator_data: rawptr, type: gbAllocationType, 
+	size: c.ssize_t, alignment: c.ssize_t, 
+	old_memory: rawptr, old_size: c.ssize_t,
+	flags : c.ulonglong
+) -> rawptr
+
+gbAllocator :: struct {
+	procedure: gbAllocatorProc,
+	data: rawptr,
+}
+
+@(default_calling_convention="c", link_prefix="stbtt_")
+foreign stbtt {
+	SetAllocator :: proc(allocator : gbAllocator) ---
+}
+
+//-----------------------------------------------------------------------------
+// END CUSTOM: ODIN COMPATIBLE ALLOCATOR
+//-----------------------------------------------------------------------------
+
 //////////////////////////////////////////////////////////////////////////////
 //
 // TEXTURE BAKING API