- skip rendering when application is not active

Use vid_activeinbackground CVAR to override this behavior

src/win32/gl_sysfb.h

@@ -30,7 +30,6 @@ public:
 
 protected:
 
-	bool CanUpdate();
 	void ResetGammaTable();
 	void SetGammaTable(uint16_t * tbl);
 

src/win32/i_input.cpp

@@ -144,7 +144,7 @@ LPDIRECTINPUT8			g_pdi;
 LPDIRECTINPUT			g_pdi3;
 
 
-BOOL AppActive = TRUE;
+extern bool AppActive;
 int SessionState = 0;
 int BlockMouseMove; 
 
@@ -527,7 +527,7 @@ LRESULT CALLBACK WndProc (HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
 		break;
 
 	case WM_ACTIVATEAPP:
-		AppActive = wParam;
+		AppActive = wParam == TRUE;
 		if (wParam)
 		{
 			SetPriorityClass (GetCurrentProcess (), INGAME_PRIORITY_CLASS);

src/win32/win32gliface.cpp

@@ -55,7 +55,6 @@
 #include "gl/system/gl_framebuffer.h"
 
 extern HWND			Window;
-extern BOOL AppActive;
 
 extern "C" {
     __declspec(dllexport) DWORD NvOptimusEnablement = 0x00000001;
@@ -71,8 +70,6 @@ PFNWGLSWAPINTERVALEXTPROC myWglSwapIntervalExtProc;
 
 
 
-CVAR(Bool, vid_activeinbackground, false, CVAR_ARCHIVE | CVAR_GLOBALCONFIG)
-
 CUSTOM_CVAR(Bool, gl_debug, false, CVAR_ARCHIVE | CVAR_GLOBALCONFIG | CVAR_NOINITCALL)
 {
 	Printf("This won't take effect until " GAMENAME " is restarted.\n");
@@ -1118,18 +1115,6 @@ void SystemFrameBuffer::InitializeState()
 //
 //==========================================================================
 
-bool SystemFrameBuffer::CanUpdate()
-{
-	if (!AppActive && (IsFullscreen() || !vid_activeinbackground)) return false;
-	return true;
-}
-
-//==========================================================================
-//
-// 
-//
-//==========================================================================
-
 void SystemFrameBuffer::ResetGammaTable()
 {
 	if (m_supportsGamma)