GL_ARB_viewport_array not started
+GL 4.2:
+GLSL 4.2 not started
+GL_ARB_texture_compression_bptc not started
+GL_ARB_compressed_texture_pixel_storage not started
+GL_ARB_shader_atomic_counters not started
+GL_ARB_texture_storage not started
+GL_ARB_transform_feedback_instanced not started
+GL_ARB_base_instance not started
+GL_ARB_shader_image_load_store not started
+GL_ARB_conservative_depth not started (may be close to AMD_conservative_depth though)
+GL_ARB_shading_language_420pack not started
+GL_ARB_internalformat_query not started
+GL_ARB_map_buffer_alignment not started
More info about these features and the work involved can be found at