In particular, this gives us B8G8R8A8_UNORM storage support which is useful for writing WSI images from compute shaders. These formats can only be accessed in a spec-compliant way by decorating the variable NonReadable in the SPIR-V (writeonly in GLSL). If the client doesn't so decorate the variable, it'll get the null surface state where reads return 0 and writes are ignored.
b13d0eea127 anv: Allow storage on all formats that support typed writes
src/intel/vulkan/anv_formats.c | 2 +-
src/intel/vulkan/anv_image.c | 33 +++++++++++++++++++++++----------
src/intel/vulkan/genX_cmd_buffer.c | 16 +++++++++++++++-
3 files changed, 39 insertions(+), 12 deletions(-)