Added some comments and tweaks #3313

src/rcore_custom.c

@@ -135,16 +135,70 @@ void InitWindow(int width, int height, const char *title)
     CORE.Window.currentFbo.width = width;
     CORE.Window.currentFbo.height = height;
 
-    // TODO: Initialize window/display system
+    // Initialize graphics device
+    // NOTE: returns true if window and graphic device has been initialized successfully
+    CORE.Window.ready = InitGraphicsDevice(width, height);
 
-    // TODO: Initialize input events system
+    // If graphic device is no properly initialized, we end program
+    if (!CORE.Window.ready) { TRACELOG(LOG_FATAL, "PLATFORM: Failed to initialize graphic device"); return; }
+    
+    // Initialize hi-res timer
+    InitTimer();
 
-    // TODO: Initialize assets manager
+    // Initialize random seed
+    SetRandomSeed((unsigned int)time(NULL));
 
-    // TODO: Initialize base path for storage
-    //CORE.Storage.basePath = platform.app->activity->internalDataPath;
+    // Initialize base path for storage
+    CORE.Storage.basePath = GetWorkingDirectory();
+    
+#if defined(SUPPORT_MODULE_RTEXT) && defined(SUPPORT_DEFAULT_FONT)
+    // Load default font
+    // WARNING: External function: Module required: rtext
+    LoadFontDefault();
+    #if defined(SUPPORT_MODULE_RSHAPES)
+    // Set font white rectangle for shapes drawing, so shapes and text can be batched together
+    // WARNING: rshapes module is required, if not available, default internal white rectangle is used
+    Rectangle rec = GetFontDefault().recs[95];
+    if (CORE.Window.flags & FLAG_MSAA_4X_HINT)
+    {
+        // NOTE: We try to maxime rec padding to avoid pixel bleeding on MSAA filtering
+        SetShapesTexture(GetFontDefault().texture, (Rectangle){ rec.x + 2, rec.y + 2, 1, 1 });
+    }
+    else
+    {
+        // NOTE: We set up a 1px padding on char rectangle to avoid pixel bleeding
+        SetShapesTexture(GetFontDefault().texture, (Rectangle){ rec.x + 1, rec.y + 1, rec.width - 2, rec.height - 2 });
+    }
+    #endif
+#else
+    #if defined(SUPPORT_MODULE_RSHAPES)
+    // Set default texture and rectangle to be used for shapes drawing
+    // NOTE: rlgl default texture is a 1x1 pixel UNCOMPRESSED_R8G8B8A8
+    Texture2D texture = { rlGetTextureIdDefault(), 1, 1, 1, PIXELFORMAT_UNCOMPRESSED_R8G8B8A8 };
+    SetShapesTexture(texture, (Rectangle){ 0.0f, 0.0f, 1.0f, 1.0f });    // WARNING: Module required: rshapes
+    #endif
+#endif
+#if defined(SUPPORT_MODULE_RTEXT) && defined(SUPPORT_DEFAULT_FONT)
+    if ((CORE.Window.flags & FLAG_WINDOW_HIGHDPI) > 0)
+    {
+        // Set default font texture filter for HighDPI (blurry)
+        // RL_TEXTURE_FILTER_LINEAR - tex filter: BILINEAR, no mipmaps
+        rlTextureParameters(GetFontDefault().texture.id, RL_TEXTURE_MIN_FILTER, RL_TEXTURE_FILTER_LINEAR);
+        rlTextureParameters(GetFontDefault().texture.id, RL_TEXTURE_MAG_FILTER, RL_TEXTURE_FILTER_LINEAR);
+    }
+#endif
 
-    TRACELOG(LOG_INFO, "PLATFORM: Application initialized successfully");
+#if defined(SUPPORT_EVENTS_AUTOMATION)
+    events = (AutomationEvent *)RL_CALLOC(MAX_CODE_AUTOMATION_EVENTS, sizeof(AutomationEvent));
+    CORE.Time.frameCounter = 0;
+#endif
+
+    // TODO: Platform specific init window
+    //--------------------------------------------------------------
+    // ...
+    //--------------------------------------------------------------
+
+    TRACELOG(LOG_INFO, "PLATFORM: CUSTOM: Application initialized successfully");
 }
 
 // Close window and unload OpenGL context