#define FEATURE_ARB_pixel_buffer_object (FEATURE_GL && FEATURE_EXT_pixel_buffer_object)
#define FEATURE_ARB_sampler_objects FEATURE_GL
#define FEATURE_ARB_sync FEATURE_GL
-#define FEATURE_ARB_vertex_buffer_object 1
#define FEATURE_EXT_framebuffer_blit FEATURE_GL
#define FEATURE_EXT_framebuffer_object 1