Allow altering graphics viewport (unfinished)

src/Game.c

@@ -603,7 +603,38 @@ void Game_TakeScreenshot(void) {
 #endif
 }
 
-static void Game_RenderFrame(double delta) {
+static CC_INLINE void Game_DrawFrame(double delta, float t) {
+	UpdateViewMatrix();
+
+	if (!Gui_GetBlocksWorld()) {
+		Camera.Active->GetPickedBlock(Entities.CurPlayer, &Game_SelectedPos); /* TODO: only pick when necessary */
+		Camera_KeyLookUpdate(delta);
+		InputHandler_Tick();
+
+		if (Game_Anaglyph3D) {
+			Render3D_Anaglyph(delta, t);
+		} else {
+			Render3DFrame(delta, t);
+		}
+	} else {
+		RayTracer_SetInvalid(&Game_SelectedPos);
+	}
+
+	Gfx_Begin2D(Game.Width, Game.Height);
+	Gui_RenderGui(delta);
+	OnscreenKeyboard_Draw3D();
+/* TODO find a better solution than this */
+#ifdef CC_BUILD_3DS
+	if (Game_Anaglyph3D) {
+		extern void Gfx_SetTopRight(void);
+		Gfx_SetTopRight();
+		Gui_RenderGui(delta);
+	}
+#endif
+	Gfx_End2D();
+}
+
+static CC_INLINE void Game_RenderFrame(double delta) {
 	struct ScheduledTask entTask;
 	float t;
 
@@ -644,39 +675,12 @@ static void Game_RenderFrame(double delta) {
 	Camera.CurrentPos = Camera.Active->GetPosition(&LocalPlayer_Instance, t);
 	/* NOTE: EnvRenderer_UpdateFog also also sets clear color */
 	EnvRenderer_UpdateFog();
-	UpdateViewMatrix();
 	AudioBackend_Tick();
 
 	/* TODO: Not calling Gfx_EndFrame doesn't work with Direct3D9 */
 	if (Window_Main.Inactive) return;
 	Gfx_ClearBuffers(GFX_BUFFER_COLOR | GFX_BUFFER_DEPTH);
-
-	if (!Gui_GetBlocksWorld()) {
-		Camera.Active->GetPickedBlock(Entities.CurPlayer, &Game_SelectedPos); /* TODO: only pick when necessary */
-		Camera_KeyLookUpdate(delta);
-		InputHandler_Tick();
-
-		if (Game_Anaglyph3D) {
-			Render3D_Anaglyph(delta, t);
-		} else {
-			Render3DFrame(delta, t);
-		}
-	} else {
-		RayTracer_SetInvalid(&Game_SelectedPos);
-	}
-
-	Gfx_Begin2D(Game.Width, Game.Height);
-	Gui_RenderGui(delta);
-	OnscreenKeyboard_Draw3D();
-/* TODO find a better solution than this */
-#ifdef CC_BUILD_3DS
-	if (Game_Anaglyph3D) {
-		extern void Gfx_SetTopRight(void);
-		Gfx_SetTopRight();
-		Gui_RenderGui(delta);
-	}
-#endif
-	Gfx_End2D();
+	Game_DrawFrame(delta, t);
 
 	if (Game_ScreenshotRequested) Game_TakeScreenshot();
 	Gfx_EndFrame();

src/Graphics.h

@@ -246,14 +246,16 @@ void Gfx_EndFrame(void);
 /* Sets whether to synchronise with monitor refresh to avoid tearing, and maximum frame rate */
 /* NOTE: VSync setting may be unsupported or just ignored */
 void Gfx_SetFpsLimit(cc_bool vsync, float minFrameMillis);
-/* Updates state when the window's dimensions have changed */
-/* NOTE: This may require recreating the context depending on the backend */
-void Gfx_OnWindowResize(void);
 /* Gets information about the user's GPU and current backend state */
 /* Backend state may include depth buffer bits, free memory, etc */
 /* NOTE: Each line is separated by \n */
 void Gfx_GetApiInfo(cc_string* info);
 
+/* Updates state when the window's dimensions have changed */
+/* NOTE: This may require recreating the context depending on the backend */
+void Gfx_OnWindowResize(void);
+void Gfx_UpdateViewport(void);
+
 enum Screen3DS { TOP_SCREEN, BOTTOM_SCREEN };
 #ifdef CC_BUILD_DUALSCREEN
 /* Selects which screen on the 3DS to render to */

src/Graphics_3DS.c

@@ -575,6 +575,8 @@ void Gfx_EndFrame(void) {
 
 void Gfx_OnWindowResize(void) { }
 
+void Gfx_UpdateViewport(void) { }
+
 
 /*########################################################################################################################*
 *----------------------------------------------------------Buffers--------------------------------------------------------*

src/Graphics_D3D11.c

@@ -1176,6 +1176,10 @@ void Gfx_OnWindowResize(void) {
 	RS_UpdateViewport();
 }
 
+void Gfx_UpdateViewport(void) {
+	RS_UpdateViewport();
+}
+
 static void InitPipeline(void) {
 	// https://docs.microsoft.com/en-us/windows/win32/direct3d11/overviews-direct3d-11-graphics-pipeline
 	IA_Init();

src/Graphics_D3D9.c

@@ -886,4 +886,6 @@ void Gfx_OnWindowResize(void) {
 	/* Only resize when necessary */
 	UpdateSwapchain(" (resizing window)");
 }
+
+void Gfx_UpdateViewport(void) { }
 #endif

src/Graphics_Dreamcast.c

@@ -557,4 +557,6 @@ void Gfx_EndFrame(void) {
 void Gfx_OnWindowResize(void) {
 	glViewport(0, 0, Game.Width, Game.Height);
 }
+
+void Gfx_UpdateViewport(void) { }
 #endif

src/Graphics_GCWii.c

@@ -312,6 +312,8 @@ void Gfx_EndFrame(void) {
 
 void Gfx_OnWindowResize(void) { }
 
+void Gfx_UpdateViewport(void) { }
+
 cc_bool Gfx_WarnIfNecessary(void) { return false; }
 
 

src/Graphics_N64.c

@@ -79,6 +79,8 @@ void Gfx_SetFpsLimit(cc_bool vsync, float minFrameMs) {
 
 void Gfx_OnWindowResize(void) { }
 
+void Gfx_UpdateViewport(void) { }
+
 
 void Gfx_BeginFrame(void) {
 	surface_t* disp = display_get();

src/Graphics_NDS.c

@@ -66,6 +66,8 @@ void Gfx_SetFpsLimit(cc_bool vsync, float minFrameMs) {
 void Gfx_OnWindowResize(void) { 
 }
 
+void Gfx_UpdateViewport(void) { }
+
 void Gfx_BeginFrame(void) {
 }
 

src/Graphics_PS1.c

@@ -727,6 +727,8 @@ void Gfx_OnWindowResize(void) {
 	// TODO
 }
 
+void Gfx_UpdateViewport(void) { }
+
 void Gfx_GetApiInfo(cc_string* info) {
 	String_AppendConst(info, "-- Using PS1 --\n");
 	PrintMaxTextureInfo(info);

src/Graphics_PS2.c

@@ -671,6 +671,8 @@ void Gfx_OnWindowResize(void) {
 	// TODO
 }
 
+void Gfx_UpdateViewport(void) { }
+
 void Gfx_GetApiInfo(cc_string* info) {
 	String_AppendConst(info, "-- Using PS2 --\n");
 	PrintMaxTextureInfo(info);

src/Graphics_PS3.c

@@ -476,6 +476,8 @@ void Gfx_OnWindowResize(void) {
 	}
 }
 
+void Gfx_UpdateViewport(void) { }
+
 
 /*########################################################################################################################*
 *-------------------------------------------------------Index buffers-----------------------------------------------------*

src/Graphics_PSP.c

@@ -283,6 +283,8 @@ void Gfx_EndFrame(void) {
 
 void Gfx_OnWindowResize(void) { }
 
+void Gfx_UpdateViewport(void) { }
+
 
 static cc_uint8* gfx_vertices;
 static int gfx_fields;

src/Graphics_PSVita.c

@@ -811,6 +811,8 @@ void Gfx_EndFrame(void) {
 
 void Gfx_OnWindowResize(void) { }
 
+void Gfx_UpdateViewport(void) { }
+
 
 /*########################################################################################################################*
 *--------------------------------------------------------GPU Buffers------------------------------------------------------*

src/Graphics_Saturn.c

@@ -435,6 +435,8 @@ void Gfx_OnWindowResize(void) {
 	// TODO
 }
 
+void Gfx_UpdateViewport(void) { }
+
 void Gfx_GetApiInfo(cc_string* info) {
 	String_AppendConst(info, "-- Using Saturn --\n");
 	PrintMaxTextureInfo(info);

src/Graphics_SoftGPU.c

@@ -491,6 +491,8 @@ void Gfx_OnWindowResize(void) {
 	colorBuffer = fb_bmp.scan0;
 }
 
+void Gfx_UpdateViewport(void) { }
+
 void Gfx_GetApiInfo(cc_string* info) {
 	int pointerSize = sizeof(void*) * 8;
 	String_Format1(info, "-- Using software (%i bit) --\n", &pointerSize);

src/Graphics_WiiU.c

@@ -458,6 +458,9 @@ void Gfx_GetApiInfo(cc_string* info) {
 void Gfx_OnWindowResize(void) {
 
 }
+
+void Gfx_UpdateViewport(void) { }
+
 void Gfx_3DS_SetRenderScreen1(enum Screen3DS screen) {
 	GX2ContextState* tv_state  = WHBGfxGetTVContextState();
 	GX2ContextState* drc_state = WHBGfxGetDRCContextState(); // TODO

src/Graphics_Xbox.c

@@ -535,6 +535,8 @@ void Gfx_CalcPerspectiveMatrix(struct Matrix* matrix, float fov, float aspect, f
 
 void Gfx_OnWindowResize(void) { }
 
+void Gfx_UpdateViewport(void) { }
+
 static struct Matrix _view, _proj, _mvp;
 
 void Gfx_LoadMatrix(MatrixType type, const struct Matrix* matrix) {

src/Graphics_Xbox360.c

@@ -402,4 +402,6 @@ void Gfx_GetApiInfo(cc_string* info) {
 void Gfx_OnWindowResize(void) {
 
 }
+
+void Gfx_UpdateViewport(void) { }
 #endif

src/_GLShared.h

@@ -325,7 +325,7 @@ void Gfx_EndFrame(void) {
 }
 
 void Gfx_OnWindowResize(void) {
-	glViewport(Gfx.ViewportX, Gfx.ViewportY, Gfx.ViewportWidth, Gfx.ViewportHeight);
+	Gfx_UpdateViewport();
 	/* With cocoa backend, in some cases [NSOpenGLContext update] will actually */
 	/*  call glViewport with the size of the window framebuffer */
 	/*  https://github.com/glfw/glfw/issues/80 */
@@ -335,3 +335,7 @@ void Gfx_OnWindowResize(void) {
 	/*  https://github.com/ClassiCube/ClassiCube/issues/888 */
 	GLContext_Update();
 }
+
+void Gfx_UpdateViewport(void) {
+	glViewport(Gfx.ViewportX, Gfx.ViewportY, Gfx.ViewportWidth, Gfx.ViewportHeight);
+}