Day 27 complete.

sdl_handmade.c

@@ -25,6 +25,9 @@
 #include <x86intrin.h>
 #endif
 
+#define RESOLUTION_WIDTH  960
+#define RESOLUTION_HEIGHT 540
+
 static B32 GlobalRunning;
 
 static U64 GlobalPerfCountFrequency;
@@ -140,7 +143,6 @@ void DEBUGPlatformFreeFileMemory(thread_context *Thread, void *Memory)
         free(Memory);
 }
 
-
 static sdl_window_dimension SDLGetWindowDimension(SDL_Window *Window)
 {
     sdl_window_dimension Dimension;
@@ -186,8 +188,8 @@ static void SDLDisplayBufferInWindow(offscreen_buffer Buffer,
     /* SDL_RenderCopy(Renderer, Buffer.Texture, 0, 0); */
     dest_rect.x = 0;
     dest_rect.y = 0;
-    dest_rect.w = 500;
-    dest_rect.h = 500;
+    dest_rect.w = RESOLUTION_WIDTH;
+    dest_rect.h = RESOLUTION_HEIGHT;
     SDL_RenderCopy(Renderer, Buffer.Texture, 0, (const SDL_Rect *)(&dest_rect));
     SDL_RenderPresent(Renderer);
 }
@@ -705,15 +707,20 @@ S32 main(S32 argc, char *argv[])
      *       protocol. However, SDL_WINDOW_ALWAYS_ON_TOP does work on KDE
      *       under Wayland. I have not tested GNOME. */
     Window = SDL_CreateWindow("Handmade Hero", SDL_WINDOWPOS_UNDEFINED,
-                              SDL_WINDOWPOS_UNDEFINED, 500, 500,
-                              SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALWAYS_ON_TOP);
+                              SDL_WINDOWPOS_UNDEFINED,
+                              RESOLUTION_WIDTH, RESOLUTION_HEIGHT,
+                              SDL_WINDOW_RESIZABLE |
+                                                 SDL_WINDOW_ALWAYS_ON_TOP);
 
     if(Window) {
         SDL_Renderer *Renderer;
 
+        SDL_DisplayMode display_mode;
+        SDL_GetCurrentDisplayMode(0, &display_mode);
+
         Renderer = SDL_CreateRenderer(Window, -1, SDL_RENDERER_PRESENTVSYNC);
-        SDL_SetWindowPosition(Window, 900, 300); /* TODO: Check that this
-                                                          works on Linux. */
+        SDL_SetWindowPosition(Window, (display_mode.w - RESOLUTION_WIDTH),
+                                      (display_mode.h - RESOLUTION_HEIGHT));
         /* "Wayland needs an event loop and rendering or it won't function."
          * https://github.com/libsdl-org/SDL/issues/7699#issuecomment-1545684792 */
         /* NOTE: This means that we need to readraw to even resize the
@@ -816,7 +823,8 @@ S32 main(S32 argc, char *argv[])
 #endif
 
                 MonitorRefreshHz = SDLGetWindowRefreshRate(Window);
-                GameUpdateHz = MonitorRefreshHz;
+                /*GameUpdateHz = MonitorRefreshHz;*/
+                GameUpdateHz = 30; /* NOTE: Temporarily target 30 FPS. */
                 TargetSecondsPerFrame = 1.0f / (F32)GameUpdateHz;
 
                 NewInput = &Input[0];
@@ -1070,6 +1078,7 @@ S32 main(S32 argc, char *argv[])
                     Buffer.Memory = GlobalBackbuffer.Memory;
                     Buffer.Width = GlobalBackbuffer.Width;
                     Buffer.Height = GlobalBackbuffer.Height;
+                    Buffer.BytesPerPixel = 4;
                     Buffer.Pitch = GlobalBackbuffer.Pitch;
 
                     if(SDLState.InputRecordingIndex) {