1GL_NV_depth_range_unclamped 2 3GL_NV_depth_range_unclamped 4 5 GL_SAMPLE_COUNT_BITS_NV 0x8864 6 GL_CURRENT_SAMPLE_COUNT_QUERY_NV 0x8865 7 GL_QUERY_RESULT_NV 0x8866 8 GL_QUERY_RESULT_AVAILABLE_NV 0x8867 9 GL_SAMPLE_COUNT_NV 0x8914 10