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shaderutil: Fix detection of shaders

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Check for versions >= 2.0 (because some drivers return 3.0), and return
GL_FALSE if shaders are not detected.
This commit is contained in:
Ian Romanick 2009-11-23 18:32:27 -08:00
parent a11750218f
commit da0883114b
1 changed files with 6 additions and 2 deletions
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8
progs/util/shaderutil.c
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@ -25,7 +25,11 @@ GLboolean
ShadersSupported(void)
{
const char *version = (const char *) glGetString(GL_VERSION);
if (version[0] == '2' && version[1] == '.') {
/* NVIDIA binary drivers will return "3.0.0", and they clearly support
* shaders.
*/
if (version[0] >= '2' && version[1] == '.') {
return GL_TRUE;
}
else if (glutExtensionSupported("GL_ARB_vertex_shader")
@ -34,7 +38,7 @@ ShadersSupported(void)
fprintf(stderr, "Warning: Trying ARB GLSL instead of OpenGL 2.x. This may not work.\n");
return GL_TRUE;
}
return GL_TRUE;
return GL_FALSE;
}