X-Git-Url: https://git.reactos.org/?p=reactos.git;a=blobdiff_plain;f=reactos%2Fdll%2Fwin32%2Fgdi32%2Fmisc%2Fwingl.c;h=b20ac7ee9d2a3042ba6d3bb4757231bdef7b9849;hp=5373c6f4d2ddbea057d1db9e5944210ca19c7f5e;hb=684c3d3791b92777e7de259fbc6691161f6808c7;hpb=f5258132f4eef483cce5491037d4383f958ce1a2

diff --git a/reactos/dll/win32/gdi32/misc/wingl.c b/reactos/dll/win32/gdi32/misc/wingl.c
index 5373c6f4d2d..b20ac7ee9d2 100644
--- a/reactos/dll/win32/gdi32/misc/wingl.c
+++ b/reactos/dll/win32/gdi32/misc/wingl.c
@@ -166,6 +166,10 @@ SetPixelFormat(HDC  hdc,
                INT  iPixelFormat,
                CONST PIXELFORMATDESCRIPTOR * ppfd)
 {
+  /* Can only be set once */
+  INT current = GetPixelFormat(hdc);
+  if(current) return current == iPixelFormat ;
+  
   if (glSetPixelFormat == NULL)
     if (OpenGLEnable() == FALSE)
       return(0);