+/** For GL_KHR_debug */
+/*@{*/
+#define MAX_LABEL_LENGTH 256
+#define MAX_DEBUG_GROUP_STACK_DEPTH 64
+/*@}*/
+
+/** For GL_ARB_gpu_shader5 */
+/*@{*/
+#define MAX_GEOMETRY_SHADER_INVOCATIONS 32
+#define MIN_FRAGMENT_INTERPOLATION_OFFSET -0.5
+#define MAX_FRAGMENT_INTERPOLATION_OFFSET 0.5
+#define FRAGMENT_INTERPOLATION_OFFSET_BITS 4
+#define MAX_VERTEX_STREAMS 4
+/*@}*/
+
+/** For GL_ARB_shader_subroutine */
+/*@{*/
+#define MAX_SUBROUTINES 256
+#define MAX_SUBROUTINE_UNIFORM_LOCATIONS 1024
+/*@}*/
+
+/** For GL_INTEL_performance_query */
+/*@{*/
+#define MAX_PERFQUERY_QUERY_NAME_LENGTH 256
+#define MAX_PERFQUERY_COUNTER_NAME_LENGTH 256
+#define MAX_PERFQUERY_COUNTER_DESC_LENGTH 1024
+#define PERFQUERY_HAVE_GPA_EXTENDED_COUNTERS 0
+/*@}*/
+
+/** For GL_ARB_pipeline_statistics_query */
+#define MAX_PIPELINE_STATISTICS 11
+
+/** For GL_ARB_tessellation_shader */
+/*@{*/
+#define MAX_TESS_GEN_LEVEL 64
+#define MAX_PATCH_VERTICES 32
+#define MAX_TESS_PATCH_COMPONENTS 120
+#define MAX_TESS_CONTROL_TOTAL_OUTPUT_COMPONENTS 4096
+/*@}*/