# OpenGL Core and Compatibility context support
-OpenGL 3.1 and later versions are only supported with the Core profile.
-There are no plans to support GL_ARB_compatibility. The last supported OpenGL
-version with all deprecated features is 3.0. Some of the later GL features
-are exposed in the 3.0 context as extensions.
+Some drivers do not support the Compatibility profile or ARB_compatibility.
+Such drivers are limited to OpenGL 3.0 if the Core profile is not requested
+by applications. Some of the later GL features are exposed in the 3.0 context
+as extensions.
Feature Status
GL_ARB_shader_group_vote DONE (i965, nvc0, radeonsi)
GL_ARB_spirv_extensions in progress (Nicolai Hähnle, Ian Romanick)
GL_ARB_texture_filter_anisotropic DONE (freedreno, i965, nv50, nvc0, r600, radeonsi, softpipe (*), llvmpipe (*))
- GL_ARB_transform_feedback_overflow_query DONE (i965/gen6+, radeonsi, llvmpipe, softpipe)
+ GL_ARB_transform_feedback_overflow_query DONE (i965/gen6+, nvc0, radeonsi, llvmpipe, softpipe)
GL_KHR_no_error DONE (all drivers)
(*) softpipe and llvmpipe advertise 16x anisotropy but simply ignore the setting
GLES3.2, GLSL ES 3.2 -- all DONE: i965/gen9+
GL_EXT_color_buffer_float DONE (all drivers)
- GL_KHR_blend_equation_advanced DONE (i965, nvc0)
+ GL_KHR_blend_equation_advanced DONE (i965, nvc0, radeonsi)
GL_KHR_debug DONE (all drivers)
GL_KHR_robustness DONE (i965, nvc0, radeonsi)
GL_KHR_texture_compression_astc_ldr DONE (freedreno, i965/gen9+)
GL_EXT_memory_object DONE (radeonsi)
GL_EXT_memory_object_fd DONE (radeonsi)
GL_EXT_memory_object_win32 not started
- GL_EXT_semaphore not started
- GL_EXT_semaphore_fd not started
+ GL_EXT_semaphore DONE (radeonsi)
+ GL_EXT_semaphore_fd DONE (radeonsi)
GL_EXT_semaphore_win32 not started
GL_KHR_blend_equation_advanced_coherent DONE (i965/gen9+)
GL_KHR_texture_compression_astc_hdr DONE (i965/bxt)