Faith Ekstrand abe9c1fea2 nak: Add NIR lowering for attribute I/O
This adds 4 NIR intrinsics for attribute I/O which match the Turing
hardware instructions as well as a lowering pass to lower
load/store[_per_vertex]_input/output to thewe intrinsics.  This greatly
simplifies nak_to_nir.rs.  Also, this pass is able to handle a bunch of
cases that the current code in nak_from_nir.rs can't:

 - Misaligned access (i.e., a vec3 load at 0x0f4)

 - Write masks on store[_per_vertex]_output

 - Indirect load/store where we need to use AL2P to get physical
   addresses, including scalarizing those cases

It also handles the casses where we need to use ISBERD on vertex indices
in the same pass.  When we switch to this, we'll rip out the dedicated
per_vertex lowering pass.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24998>
2023-11-14 00:48:14 +00:00
2022-11-22 19:04:13 +00:00
2023-11-07 06:37:00 +00:00
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2022-11-21 23:09:30 +00:00
2023-11-02 11:37:46 +00:00
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`Mesa <https://mesa3d.org>`_ - The 3D Graphics Library
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