docs/relnotes/new_features.txt

   1 GL_ARB_compute_variable_group_size on Iris.
   2 GL_ARB_gpu_shader5 on llvmpipe
   3 GL 4.0 on llvmpipe
   4 GL_EXT_shader_group_vote on GLES3.
   5 VK_AMD_texture_gather_bias_lod on RADV.
   6 VK_AMD_gpu_shader_half_float on RADV/ACO.
   7 VK_AMD_gpu_shader_int16 on RADV/ACO.
   8 VK_EXT_private_data on ANV and RADV.
   9 VK_EXT_custom_border_color on ANV and RADV.
  10 VK_EXT_pipeline_creation_cache_control on ANV and RADV.
  11 VK_EXT_shader_demote_to_helper_invocation on RADV/LLVM.
  12 VK_EXT_subgroup_size_control on RADV/ACO.
  13 VK_GOOGLE_user_type on ANV and RADV.
  14 VK_KHR_shader_subgroup_extended_types on RADV/ACO.
  15 GL_ARB_gl_spirv on nvc0/nir.
  16 GL_ARB_spirv_extensions on nvc0/nir.
  17 RADV now uses ACO per default as backend
  18 RADV_DEBUG=llvm option to enable LLVM backend for RADV