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nv50/ir: force-enable derivatives on TXD ops

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This matters especially in vertex shaders, where derivatives are
disabled by default. This fixes textureGrad in vertex shaders on nv50.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Cc: "11.1 11.2" <mesa-stable@lists.freedesktop.org>
(cherry picked from commit d2445b0083)
This commit is contained in:
Ilia Mirkin 2016-03-19 11:46:11 -04:00 • committed by Emil Velikov
parent 6771e866d0
commit 7521241091
2 changed files with 4 additions and 1 deletions
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4
src/gallium/drivers/nouveau/codegen/nv50_ir_emit_nv50.cpp
View file

@ -1609,7 +1609,9 @@ CodeEmitterNV50::emitTEX(const TexInstruction *i)
code[1] |= (i->tex.mask & 0xc) << 12;
if (i->tex.liveOnly)
code[1] |= 4;
code[1] |= 1 << 2;
if (i->tex.derivAll)
code[1] |= 1 << 3;
defId(i->def(0), 2);

1
src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_nv50.cpp
View file

@ -916,6 +916,7 @@ NV50LoweringPreSSA::handleTXD(TexInstruction *i)
handleTEX(i);
i->op = OP_TEX; // no need to clone dPdx/dPdy later
i->tex.derivAll = true;
for (c = 0; c < dim; ++c)
crd[c] = bld.getScratch();