- (BOOL)isSupportNPOT {// GL_OES_texture_npot// GL_APPLE_texture_2D_limited_npot// GL_ARB_texture_non_power_of_two EAGLContext *context_ = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES1]; [EAGLContext setCurrentContext:context_]; NSArray *extensionNames = nil; NSString *extensionsString = [NSString stringWithCString:(const char *)glGetString(GL_EXTENSIONS) encoding:NSASCIIStringEncoding]; extensionNames = [extensionsString componentsSeparatedByString:@" "]; BOOL isSupport = [extensionNames containsObject:@"GL_APPLE_texture_2D_limited_npot"]; [EAGLContext setCurrentContext:nil]; NSLog(@"Apple Opengl support NPOT is %@", isSupport ? @"YES" : @"NO"); return isSupport;}