Files
mesa/src/amd/common
Rhys Perry 7d552d71e9 ac/nir: optimize txd(coord, ddx/ddy(coord))
This is done in ac_nir_lower_tex so that we can optimize derivative
calculations with a different exec mask than the texture sample by using
the nir_strict_wqm_coord_amd path.

It's also more aware of divergence than nir_lower_tex is.

fossil-db (gfx1201):
Totals from 103 (0.13% of 79839) affected shaders:
MaxWaves: 2610 -> 2620 (+0.38%)
Instrs: 347283 -> 345912 (-0.39%); split: -0.40%, +0.00%
CodeSize: 1892380 -> 1883824 (-0.45%); split: -0.46%, +0.00%
VGPRs: 8028 -> 7824 (-2.54%)
Latency: 3942575 -> 3939623 (-0.07%); split: -0.08%, +0.01%
InvThroughput: 867147 -> 865281 (-0.22%); split: -0.24%, +0.02%
VClause: 6230 -> 6221 (-0.14%); split: -0.19%, +0.05%
SClause: 3910 -> 3914 (+0.10%); split: -0.26%, +0.36%
Copies: 16091 -> 15721 (-2.30%); split: -2.74%, +0.44%
PreSGPRs: 4651 -> 4658 (+0.15%)
PreVGPRs: 6389 -> 6320 (-1.08%); split: -1.17%, +0.09%
VALU: 228715 -> 227490 (-0.54%); split: -0.54%, +0.01%
SALU: 32763 -> 32767 (+0.01%); split: -0.06%, +0.07%
VMEM: 9027 -> 9024 (-0.03%)

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Georg Lehmann <dadschoorse@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/37561>
2025-10-23 11:22:00 +00:00
..
2025-07-12 10:28:21 +00:00
2024-09-23 19:25:08 +00:00
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