shaderutil: Fix detection of shaders
Check for versions >= 2.0 (because some drivers return 3.0), and return GL_FALSE if shaders are not detected.
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@ -25,7 +25,11 @@ GLboolean
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ShadersSupported(void)
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{
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const char *version = (const char *) glGetString(GL_VERSION);
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if (version[0] == '2' && version[1] == '.') {
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/* NVIDIA binary drivers will return "3.0.0", and they clearly support
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* shaders.
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*/
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if (version[0] >= '2' && version[1] == '.') {
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return GL_TRUE;
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}
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else if (glutExtensionSupported("GL_ARB_vertex_shader")
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@ -34,7 +38,7 @@ ShadersSupported(void)
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fprintf(stderr, "Warning: Trying ARB GLSL instead of OpenGL 2.x. This may not work.\n");
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return GL_TRUE;
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}
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return GL_TRUE;
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return GL_FALSE;
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}
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