+GL 4.6, GLSL 4.60
+
+ GL_ARB_gl_spirv in progress (Nicolai Hähnle, Ian Romanick)
+ GL_ARB_gl_spirv_extensions in progress (Nicolai Hähnle, Ian Romanick)
+ GL_ARB_indirect_parameters DONE (nvc0, radeonsi)
+ GL_ARB_pipeline_statistics_query DONE (i965, nvc0, radeonsi, softpipe, swr)
+ GL_ARB_polygon_offset_clamp not started
+ GL_ARB_shader_atomic_counter_ops DONE (i965/gen7+, nvc0, radeonsi, softpipe)
+ GL_ARB_shader_draw_parameters DONE (i965, nvc0, radeonsi)
+ GL_ARB_shader_group_vote DONE (i965, nvc0, radeonsi)
+ GL_ARB_texture_filter_anisotropic not started
+ GL_ARB_transform_feedback_overflow_query DONE (i965/gen6+)
+ GL_KHR_no_error started (Timothy Arceri)
+