anv, vulkan: add support for P010 sampling
P010
maps to VK_FORMAT_G10X6_B10X6R10X6_2PLANE_420_UNORM_3PACK16
in Vulkan. anv treats the planes as R16
and R16G16
and supports sampling. IIUC, the only caveat is, while P010
requires the lower 6 bits to be 0, VK_FORMAT_G10X6_B10X6R10X6_2PLANE_420_UNORM_3PACK16
requires us to ignore the lower 6 bits.
The first 2 commits extend nir_vk_lower_ycbcr_tex
to support masking out the lower bits. The third commit enables P010
support in anv. The last commit advertises DRM modifier support for all supported ycbcr formats.
/cc @linyaa