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Date: Wed, 23 May 2007 00:39:47 +0300
From: "Eyal Lotem"
To: "SDL Mailing List" <>
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.

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icculus committed May 22, 2007
1 parent abf19c2 commit 825547f50e3f1d2fba06c971d0e4d781e255f692
Showing with 1 addition and 1 deletion.
  1. +1 −1 src/video/x11/SDL_x11opengl.c
@@ -224,7 +224,7 @@ X11_GL_InitExtensions(_THIS)

/* 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");

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