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mesa/src/amd/vulkan
Samuel Pitoiset 1402c17e4f radv: optimize VRS when no depth stencil attachment is bound
This is allowed by the Vulkan spec and we have to handle this situation
internally. We used to create and bind a 4096x4096 image to copy the
VRS rates but this wasted too much VRAM (~33MiB). Now, the driver only
allocates a HTILE buffer (~1MiB) and bind it to the framebuffer.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12243>
2021-09-02 19:39:04 +00:00
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