Moved program icon drawing into handmade layer.

handmade.h

@@ -3,7 +3,6 @@
 
 #include "core.h"
 #include "handmade_tile.h"
-
 /* --------------------------------------------------------------------- */
 /* NOTE: Servcies that the platform layer provides to the game.          */
 /* --------------------------------------------------------------------- */
@@ -23,13 +22,15 @@ B32 DEBUGPlatformWriteEntireFile(thread_context *Thread, const char *Filename, U
 void DEBUGPlatformFreeFileMemory(thread_context *Thread, void *Memory);
 #endif
 
+typedef struct game_offscreen_buffer game_offscreen_buffer;
+void SetProgramIcon(game_offscreen_buffer *ProgramIcon);
+
 /* --------------------------------------------------------------------- */
 /* NOTE: Servcies that the game provides to the platform layer.          */
 /* --------------------------------------------------------------------- */
 
 typedef struct game_offscreen_buffer {
-    /* Pixels are always 32-bit and have the bytes in BGRX
-     * (little-endian). */
+    /* Pixels are always 32-bit and have the bytes in BGRX (little-endian). */
     void *Memory;
     S32 Width;
     S32 Height;
@@ -112,6 +113,7 @@ typedef struct game_memory {
     debug_read_file_result (*DEBUGPlatformReadEntireFile)(thread_context *Thread,const char *);
     B32 (*DEBUGPlatformWriteEntireFile)(thread_context *Thread, const char *, U32, void *);
     void (*DEBUGPlatformFreeFileMemory)(thread_context *Thread, void *);
+    void (*SetProgramIcon)(game_offscreen_buffer *ProgramIcon);
 #endif
 } game_memory;
 
@@ -123,9 +125,7 @@ typedef struct game_memory {
 #if OS_WINDOWS
 __declspec(dllexport)
 #endif
-void UpdateAndRender(thread_context *Thread, game_memory *Memory,
-                     game_input *Input, game_offscreen_buffer *Buffer,
-                     game_sound_output_buffer *SoundBuffer);
+void UpdateAndRender(thread_context *Thread, game_memory *Memory, game_input *Input, game_offscreen_buffer *Buffer, game_sound_output_buffer *SoundBuffer);
 
 /*
  *
@@ -177,6 +177,9 @@ typedef struct hero_bitmaps {
 } hero_bitmaps;
 
 typedef struct game_state {
+    game_offscreen_buffer ProgramIcon;
+    loaded_bitmap ProgramIconBMP;
+
     memory_arena WorldArena;
     world *World;
 
@@ -184,6 +187,7 @@ typedef struct game_state {
     tile_map_position PlayerP;
     v2 dPlayerP; // velocity
 
+
     loaded_bitmap Backdrop;
 
     U32 FacingDirection;