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");
}