GL_ARB_shading_language_packing DONE (all drivers)
GL_ARB_separate_shader_objects DONE (all drivers)
GL_ARB_stencil_texturing DONE (i965/gen8+, nv50, nvc0, r600, radeonsi, llvmpipe, softpipe)
+ Multisample textures (GL_ARB_texture_multisample) DONE (i965, nv50, nvc0, r600, radeonsi, llvmpipe, softpipe)
+ GL_ARB_texture_storage_multisample DONE (all drivers that support GL_ARB_texture_multisample)
GL_ARB_vertex_attrib_binding DONE (all drivers)
GS5 Enhanced textureGather DONE (i965, nvc0, r600, radeonsi)
GS5 Packing/bitfield/conversion functions DONE (i965, nvc0, r600, radeonsi)
GL_EXT_shader_integer_mix DONE (all drivers that support GLSL)
+ Additional functions not covered above:
+ glMemoryBarrierByRegion
+ glGetTexLevelParameter[fi]v - needs updates to restrict to GLES enums
+ glGetBooleani_v - needs updates to restrict to GLES enums
More info about these features and the work involved can be found at
http://dri.freedesktop.org/wiki/MissingFunctionality