If the app passes us unaligned buffer offsets, we need to align them
down to the nearest aligned offset, and then put the difference into
the descriptor set buffer.
Fixes: 8bd5fbf8 ("dzn: Bind buffers for bindless descriptor sets")
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22225>
Cache coherent UMA implies that the GPU is reading data through the
CPU caches. Using write-combined CPU pages for such a system would
be bad, since the GPU would then be reading uncached data. One
example of such a system is WARP. This significantly improves WARP's
performance for some apps (including the CTS).
Cc: mesa-stable
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22225>
Unlike DXBC, DXIL's shift instructions don't have the implicit behavior
that they only take the 5 bits. This is observable if you try to have
DXC do a shift of a dynamic value, e.g. a constant buffer value, where
the compiler inserts the appropriate 'and' op. We need to do the same.
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22225>
Shifts should always use 32bit shift values, and when lowering to
masked, we need to use 32-bit atomics. That means that we should also
treat 24bit stores as a single masked op rather than one 16bit unmasked
and one 8bit masked.
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22225>
Note: The meaning of clockwise vs counter-clockwise changes after the
yz flip, therefore the determination of winding needs to be done before
the yz flip logic. Therefore the yz flip is moved to the GS and applied
as a lowering on top of the base GS.
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22277>
Shader model 6.2 was the upper bounds of what *could* be generated
before, but not all devices support it. And other devices support
even more. So, let's pass in the shader model / validator that will
be used by the API caller.
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21178>
This is needed so that we can handle two special cases:
* Dynamic buffer data is allocated out of a command-buffer-owned buffer,
rather than a descriptor-set-owned buffer, so the remapping puts them
in their own register space.
* Static samplers should be left alone and not converted to bindless.
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21913>
Rather than trying to perfectly defrag, let's just allow re-use.
When a set is allocated for the first time, it locks in its range of
the heap that it'll use. If the last set in the heap is used, then
those descriptors go back to being free, but if a set in the middle
of the heap is freed, those descriptors remain assigned to that set.
A later allocation attempt can reclaim them, as long as the new set
fits.
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21913>
When operating in "bindless" mode, the device will own 2 descriptor
heaps, one for views, and one for samplers. Every time a view is
created (image view, buffer view), a slot is allocated for it out
of the device view heap for each usage type (sampled vs storage).
Then, in a future change, descriptor sets will just contain view/
sampler indices instead of actual descriptors. Instead of copying
these to a cmdbuf-owned descriptor heap, we can directly bind the
descriptor set as a buffer. We'll also modify shaders to perform
an indirection and index into the device heap.
Buffers also get views set up on creation. In a perfect world, we
could just put addresses/sizes in the descriptor set, but DXIL
doesn't support loading from addresses, we need descriptors. When
robust buffer access is disabled *or* descriptor set buffer views
reference the remainder of the buffer, we can just re-use a view
from the buffer and use an offset.
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21913>
When running in a bindless mode, we won't ever be using SRVs for these.
Change terminology for determining descriptor offsets from "writable"
to "alt" to match naming already used elsewhere.
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21913>
