GlennChiu

// as recommended by Apple

BOOL CheckForExtension(NSString *searchName)
{
    NSString *extensionsString = [NSString stringWithCString:glGetString(GL_EXTENSIONS) encoding:NSASCIIStringEncoding];
    NSArray *extensionsNames = [extensionsString componentsSeparatedByString:@" "];
    return [extensionsNames containsObject:searchName];
}

// e.g. check for PowerVR Texture Compression format