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nv50/ir/nir: fix txq emission on MS textures

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In GL and a lot of Vulkan if we end up with either a lod or an ms index.

Sadly in Vulkan we can end up with both and have to choose properly. For
TXQ we have to emit a zero LOD. For TXF we have to emit the ms index.

Fixes: bb032d8b62 ("nv50/ir/nir: implement nir_instr_type_tex")
Signed-off-by: Karol Herbst <git@karolherbst.de>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24343>
(cherry picked from commit 85a31fa1fc)
This commit is contained in:
Karol Herbst 2023-07-27 00:23:20 +02:00 • committed by Dylan Baker
parent dd98f98764
commit 68cf3ae3e1
2 changed files with 7 additions and 2 deletions
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2
.pick_status.json
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@ -22894,7 +22894,7 @@
"description": "nv50/ir/nir: fix txq emission on MS textures",
"nominated": true,
"nomination_type": 1,
"resolution": 0,
"resolution": 1,
"main_sha": null,
"because_sha": "bb032d8b629cd42c8b7767d9f2156530b1b746f9",
"notes": null

7
src/nouveau/codegen/nv50_ir_from_nir.cpp
View file

@ -2970,8 +2970,12 @@ Converter::visit(nir_tex_instr *insn)
srcs.push_back(loadImm(NULL, 0));
if (biasIdx != -1)
srcs.push_back(getSrc(&insn->src[biasIdx].src, 0));
if (lodIdx != -1)
// TXQ requires a lod argument for all queries we care about here.
// For other ops on MS textures we skip it.
if (lodIdx != -1 && !target.isMS())
srcs.push_back(getSrc(&insn->src[lodIdx].src, 0));
else if (op == OP_TXQ)
srcs.push_back(zero); // TXQ always needs an LOD
else if (op == OP_TXF)
lz = true;
if (msIdx != -1)
@ -3038,6 +3042,7 @@ Converter::visit(nir_tex_instr *insn)
texi->tex.mask = 0x8;
texi->tex.query = TXQ_DIMS;
break;
// TODO: TXQ_SAMPLE_POSITION needs the sample id instead of the LOD emited further up.
default:
break;
}