Jason Ekstrand
0a93c0364c
The Vulkan 1.2.184 spec says:
"When creating a VkImageView, if sampler Y′CBCR conversion is
enabled in the sampler, the aspectMask of a subresourceRange used by
the VkImageView must be VK_IMAGE_ASPECT_COLOR_BIT.
When creating a VkImageView, if sampler Y′CBCR conversion is not
enabled in the sampler and the image format is multi-planar, the
image must have been created with
VK_IMAGE_CREATE_MUTABLE_FORMAT_BIT, and the aspectMask of the
VkImageView’s subresourceRange must be VK_IMAGE_ASPECT_PLANE_0_BIT,
VK_IMAGE_ASPECT_PLANE_1_BIT or VK_IMAGE_ASPECT_PLANE_2_BIT."
Previously, for YCbCr images, we were flipping this around. For single-
plane views where VK_IMAGE_ASPECT_PLANE_N_BIT would be passed in by the
app, we would store VK_IMAGE_ASPECT_COLOR_BIT. For multi-plane views
where the client says VK_IMAGE_ASPECT_COLOR_BIT, we would store a all of
the planes. (There was also an extra bit of remapping that would
compact the planes in the non-existent case of a format with a non-
contiguous set of planes.) The idea behind this was that for things
like rendering or single-plane sampling, storage, or compute, we want it
to look as much like a single-plane image as possible but we wanted the
multi-plane case to be the awkward one.
This commit changes it around so that iview->aspects is always exactly
the subset of image->vk.aspects represented by the view. This is
identical to how aspects work for depth/stencil so it gains us some
consistency.
This commit also changes anv_image_view::aspect_mask to aspects to force
a full audit of the field. As can be seen, there are only a few uses of
this field and they're all mostly fine:
- A bunch of them are used to check for depth/stencil. That hasn't
changed.
- Most of the checks for color already used ANY_COLOR_BIT, only one
needed fixing.
- There's a check that both src/depth are color for MSAA resolves.
However, we don't support MSAA on YCbCr so there's no point in
checking for ANY_COLOR_BIT.
There is a hidden usage of planes in anv_descriptor_set_write_image_view
that's not as obvious. However, this function simply looks at
anv_image_view::n_planes and blindly fills out the descriptor
accordingly. As long as image views with a single plane continue to
claim n_planes == 1, this will be fine.
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12141>
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