Date: Wed, 23 May 2007 00:39:47 +0300 From: "Eyal Lotem" To: "SDL Mailing List" <sdl@lists.libsdl.org> Subject: [SDL] Bug in GL_SWAP_CONTROL extension name. The checked extension name is incorrect. The attached patch fixes it to the correct name. I don't think that under any setup, this extension name was ever correct, which is why its not OR'd against the old check. This fixes the "tear effect" (vsync problems) I had here with nVidia GLX drivers. Eyal

--- a/src/video/x11/SDL_x11opengl.c	Wed Apr 04 10:41:00 2007 +0000
+++ b/src/video/x11/SDL_x11opengl.c	Tue May 22 22:13:56 2007 +0000
@@ -224,7 +224,7 @@
     }
 
     /* Check for SGI_swap_control */
-    if (HasExtension("SGI_swap_control", extensions)) {
+    if (HasExtension("GLX_SGI_swap_control", extensions)) {
         _this->gl_data->glXSwapIntervalSGI =
             (int (*)(int)) X11_GL_GetProcAddress(_this, "glXSwapIntervalSGI");
     }