isl: CPCB horizontal and vertical alignment requirements unknown
Our Vulkan driver supports layered fragment shading rate attachments. When accessing specific image layers via RENDER_SURFACE_STATE
, the vertical alignment should be known. At the moment, we don't know the alignment requirements for CPCB, so we rely on Tile64 which uses fixed alignment requirements. We should at least determine the vertical image alignment requirement so that we can save space by using Tile4.