Simplify viewport setting

src/Game.c

@@ -639,11 +639,7 @@ static CC_INLINE void Game_DrawFrame(double delta, float t) {
 
 #ifdef CC_BUILD_SPLITSCREEN
 static void DrawSplitscreen(double delta, float t, int i, int x, int y, int w, int h) {
-	Gfx.ViewportX = x;
-	Gfx.ViewportY = y;
-	Gfx.ViewportWidth = w;
-	Gfx.ViewportHeight = h;
-	Gfx_UpdateViewport();
+	Gfx_SetViewport(x, y, w, h);
 	
 	Entities.CurPlayer = &LocalPlayer_Instances[i];
 	LocalPlayer_SetInterpPosition(Entities.CurPlayer, t);

src/Graphics.h

@@ -66,7 +66,6 @@ CC_VAR extern struct _GfxData {
 	int MinTexWidth, MinTexHeight;
 	cc_bool  ReducedPerfMode;
 	cc_uint8 ReducedPerfModeCooldown;
-	int ViewportX, ViewportY, ViewportWidth, ViewportHeight;
 } Gfx;
 
 extern GfxResourceID Gfx_defaultIb;
@@ -254,7 +253,7 @@ 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);
+void Gfx_SetViewport(int x, int y, int w, int h);
 
 enum Screen3DS { TOP_SCREEN, BOTTOM_SCREEN };
 #ifdef CC_BUILD_DUALSCREEN

src/Graphics_3DS.c

@@ -575,7 +575,7 @@ void Gfx_EndFrame(void) {
 
 void Gfx_OnWindowResize(void) { }
 
-void Gfx_UpdateViewport(void) { }
+void Gfx_SetViewport(int x, int y, int w, int h) { }
 
 
 /*########################################################################################################################*

src/Graphics_D3D11.c

@@ -646,12 +646,12 @@ static void RS_CreateRasterState(void) {
 	ID3D11Device_CreateRasterizerState(device, &desc, &rs_states[1]);
 }
 
-static void RS_UpdateViewport(void) {
+void Gfx_SetViewport(int x, int y, int w, int h) {
 	D3D11_VIEWPORT viewport;
-	viewport.TopLeftX = Gfx.ViewportX;
-	viewport.TopLeftY = Gfx.ViewportY;
-	viewport.Width    = Gfx.ViewportWidth;
-	viewport.Height   = Gfx.ViewportHeight;
+	viewport.TopLeftX = x;
+	viewport.TopLeftY = y;
+	viewport.Width    = w;
+	viewport.Height   = h;
 	viewport.MinDepth = 0.0f;
 	viewport.MaxDepth = 1.0f;
 	ID3D11DeviceContext_RSSetViewports(context, 1, &viewport);
@@ -670,7 +670,7 @@ static void RS_FreeRasterStates(void) {
 
 static void RS_Init(void) {
 	RS_CreateRasterState();
-	RS_UpdateViewport();
+	Gfx_SetViewport(0, 0, Game.Width, Game.Height);
 	RS_UpdateRasterState();
 }
 
@@ -1173,11 +1173,7 @@ void Gfx_OnWindowResize(void) {
 	if (hr) Logger_Abort2(hr, "Failed to resize swapchain");
 
 	OM_InitTargets();
-	RS_UpdateViewport();
-}
-
-void Gfx_UpdateViewport(void) {
-	RS_UpdateViewport();
+	Gfx_SetViewport(0, 0, Game.Width, Game.Height);
 }
 
 static void InitPipeline(void) {

src/Graphics_D3D9.c

@@ -887,5 +887,5 @@ void Gfx_OnWindowResize(void) {
 	UpdateSwapchain(" (resizing window)");
 }
 
-void Gfx_UpdateViewport(void) { }
+void Gfx_SetViewport(int x, int y, int w, int h) { }
 #endif

src/Graphics_Dreamcast.c

@@ -30,7 +30,7 @@ static void InitGLState(void) {
 
 void Gfx_Create(void) {
 	if (!Gfx.Created) glKosInit();
-	Gfx_UpdateViewport();
+	Gfx_SetViewport(0, 0, Game.Width, Game.Height);
 	InitGLState();
 	
 	Gfx.MinTexWidth  = 8;
@@ -555,11 +555,11 @@ void Gfx_EndFrame(void) {
 }
 
 void Gfx_OnWindowResize(void) {
-	Gfx_UpdateViewport();
+	Gfx_SetViewport(0, 0, Game.Width, Game.Height);
 }
 
-void Gfx_UpdateViewport(void) {
-	glViewport(Gfx.ViewportX, Gfx.ViewportY, Gfx.ViewportWidth, Gfx.ViewportHeight);
-	glScissor (Gfx.ViewportX, Gfx.ViewportY, Gfx.ViewportWidth, Gfx.ViewportHeight);
+void Gfx_SetViewport(int x, int y, int w, int h) {
+	glViewport(x, y, w, h);
+	glScissor (x, y, w, h);
 }
 #endif

src/Graphics_GCWii.c

@@ -312,7 +312,7 @@ void Gfx_EndFrame(void) {
 
 void Gfx_OnWindowResize(void) { }
 
-void Gfx_UpdateViewport(void) { }
+void Gfx_SetViewport(int x, int y, int w, int h) { }
 
 cc_bool Gfx_WarnIfNecessary(void) { return false; }
 

src/Graphics_N64.c

@@ -79,7 +79,7 @@ void Gfx_SetFpsLimit(cc_bool vsync, float minFrameMs) {
 
 void Gfx_OnWindowResize(void) { }
 
-void Gfx_UpdateViewport(void) { }
+void Gfx_SetViewport(int x, int y, int w, int h) { }
 
 
 void Gfx_BeginFrame(void) {

src/Graphics_NDS.c

@@ -66,7 +66,7 @@ void Gfx_SetFpsLimit(cc_bool vsync, float minFrameMs) {
 void Gfx_OnWindowResize(void) { 
 }
 
-void Gfx_UpdateViewport(void) { }
+void Gfx_SetViewport(int x, int y, int w, int h) { }
 
 void Gfx_BeginFrame(void) {
 }

src/Graphics_PS1.c

@@ -727,7 +727,7 @@ void Gfx_OnWindowResize(void) {
 	// TODO
 }
 
-void Gfx_UpdateViewport(void) { }
+void Gfx_SetViewport(int x, int y, int w, int h) { }
 
 void Gfx_GetApiInfo(cc_string* info) {
 	String_AppendConst(info, "-- Using PS1 --\n");

src/Graphics_PS2.c

@@ -671,7 +671,7 @@ void Gfx_OnWindowResize(void) {
 	// TODO
 }
 
-void Gfx_UpdateViewport(void) { }
+void Gfx_SetViewport(int x, int y, int w, int h) { }
 
 void Gfx_GetApiInfo(cc_string* info) {
 	String_AppendConst(info, "-- Using PS2 --\n");

src/Graphics_PS3.c

@@ -414,7 +414,7 @@ static void ResetFrameState(void) {
 						GCM_USER_CLIP_PLANE_DISABLE);
         
 	// NOTE: Must be called each frame, otherwise renders upside down at 4x zoom
-	Gfx_OnWindowResize();
+	Gfx_SetViewport(0, 0, Game.Width, Game.Height);
 }
 
 // https://github.com/ps3dev/PSL1GHT/blob/master/ppu/include/rsx/rsx.h#L30
@@ -450,24 +450,26 @@ void Gfx_EndFrame(void) {
 }
 
 void Gfx_OnWindowResize(void) {
+	Gfx_SetViewport(0, 0, Game.Width, Game.Height);
+}
+
+void Gfx_SetViewport(int x, int y, int w, int h) {
 	f32 scale[4], offset[4];
-	
-	u16 w = DisplayInfo.Width;
-	u16 h = DisplayInfo.Height;
 	f32 zmin = 0.0f;
 	f32 zmax = 1.0f;
+	y = Game.Height - y - h;
 	
 	scale[0]  = w *  0.5f;
 	scale[1]  = h * -0.5f;
 	scale[2]  = (zmax - zmin) * 0.5f;
 	scale[3]  = 0.0f;
-	offset[0] = w * 0.5f;
-	offset[1] = h * 0.5f;
+	offset[0] = x + w * 0.5f;
+	offset[1] = x + h * 0.5f;
 	offset[2] = (zmax + zmin) * 0.5f;
 	offset[3] = 0.0f;
 
-	rsxSetViewport(context, 0, 0, w, h, zmin, zmax, scale, offset);
-	rsxSetScissor(context,  0, 0, w, h);
+	rsxSetViewport(context, x, y, w, h, zmin, zmax, scale, offset);
+	rsxSetScissor(context,  x, y, w, h);
 	
 	// TODO: even needed?
 	for (int i = 0; i < 8; i++)
@@ -476,8 +478,6 @@ void Gfx_OnWindowResize(void) {
 	}
 }
 
-void Gfx_UpdateViewport(void) { }
-
 
 /*########################################################################################################################*
 *-------------------------------------------------------Index buffers-----------------------------------------------------*

src/Graphics_PSP.c

@@ -283,7 +283,7 @@ void Gfx_EndFrame(void) {
 
 void Gfx_OnWindowResize(void) { }
 
-void Gfx_UpdateViewport(void) { }
+void Gfx_SetViewport(int x, int y, int w, int h) { }
 
 
 static cc_uint8* gfx_vertices;

src/Graphics_PSVita.c

@@ -811,7 +811,7 @@ void Gfx_EndFrame(void) {
 
 void Gfx_OnWindowResize(void) { }
 
-void Gfx_UpdateViewport(void) { }
+void Gfx_SetViewport(int x, int y, int w, int h) { }
 
 
 /*########################################################################################################################*

src/Graphics_Saturn.c

@@ -435,7 +435,7 @@ void Gfx_OnWindowResize(void) {
 	// TODO
 }
 
-void Gfx_UpdateViewport(void) { }
+void Gfx_SetViewport(int x, int y, int w, int h) { }
 
 void Gfx_GetApiInfo(cc_string* info) {
 	String_AppendConst(info, "-- Using Saturn --\n");

src/Graphics_SoftGPU.c

@@ -491,7 +491,7 @@ void Gfx_OnWindowResize(void) {
 	colorBuffer = fb_bmp.scan0;
 }
 
-void Gfx_UpdateViewport(void) { }
+void Gfx_SetViewport(int x, int y, int w, int h) { }
 
 void Gfx_GetApiInfo(cc_string* info) {
 	int pointerSize = sizeof(void*) * 8;

src/Graphics_WiiU.c

@@ -459,7 +459,7 @@ void Gfx_OnWindowResize(void) {
 
 }
 
-void Gfx_UpdateViewport(void) { }
+void Gfx_SetViewport(int x, int y, int w, int h) { }
 
 void Gfx_3DS_SetRenderScreen1(enum Screen3DS screen) {
 	GX2ContextState* tv_state  = WHBGfxGetTVContextState();

src/Graphics_Xbox.c

@@ -535,7 +535,7 @@ void Gfx_CalcPerspectiveMatrix(struct Matrix* matrix, float fov, float aspect, f
 
 void Gfx_OnWindowResize(void) { }
 
-void Gfx_UpdateViewport(void) { }
+void Gfx_SetViewport(int x, int y, int w, int h) { }
 
 static struct Matrix _view, _proj, _mvp;
 

src/Graphics_Xbox360.c

@@ -403,5 +403,5 @@ void Gfx_OnWindowResize(void) {
 
 }
 
-void Gfx_UpdateViewport(void) { }
+void Gfx_SetViewport(int x, int y, int w, int h) { }
 #endif

src/_GLShared.h

@@ -325,7 +325,7 @@ void Gfx_EndFrame(void) {
 }
 
 void Gfx_OnWindowResize(void) {
-	Gfx_UpdateViewport();
+	Gfx_SetViewport(0, 0, Game.Width, Game.Height);
 	/* 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 */
@@ -336,6 +336,6 @@ void Gfx_OnWindowResize(void) {
 	GLContext_Update();
 }
 
-void Gfx_UpdateViewport(void) {
-	glViewport(Gfx.ViewportX, Gfx.ViewportY, Gfx.ViewportWidth, Gfx.ViewportHeight);
+void Gfx_SetViewport(int x, int y, int w, int h) {
+	glViewport(x, y, w, h);
 }