docs/relnotes/new_features.txt

   1 GL_ARB_gl_spirv on i965, iris.
   2 GL_ARB_spirv_extensions on i965, iris.
   3 GL_EXT_demote_to_helper_invocation on iris, i965.
   4 OpenGL 4.6 on i965, iris.
   5 EGL_EXT_image_flush_external
   6 VK_ANDROID_external_memory_android_hardware_buffer on RADV.
   7 VK_KHR_shader_clock on Intel, RADV.
   8 VK_KHR_shader_float_controls on Intel, RADV.
   9 VK_KHR_spirv_1_4 on Intel, RADV.
  10 VK_KHR_timeline_semaphore on RADV.
  11 VK_KHR_vulkan_memory_model on Intel.
  12 VK_EXT_shader_subgroup_ballot on Intel.
  13 VK_EXT_shader_subgroup_vote on Intel.
  14 VK_EXT_texel_buffer_alignment on RADV.
  15 VK_INTEL_performance_query on Intel.
  16 Meson support for windows using MSVC and MinGW
  17 scons has been deprecated for non windows