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add8778638
This gets vkQuake to render correctly, which creates render passes with
stencil load operations even when the depth/stencil attachment format
doesn't have a stencil aspect. While this is a bit weird, it seems to
be allowed by the spec:
"If the format has depth and/or stencil components, loadOp and storeOp
apply only to the depth data, while stencilLoadOp and stencilStoreOp
define how the stencil data is handled."
In our case we were not ignoring it and this was causing that we emitted a
Z buffer load that seemed to clobber the Z clear, preventing all draw calls
from passing the depth test.
While we are at it, also change the depth/stencil store operation (which
was already handling this scenario correctly) to use the format of the
render pass attachment description rather than the underlying image
format.
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6766>
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