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gv100/ir: implement sample shading

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Fixes sample shading tests in the Khronos OpenGL(ES) CTS

Signed-off-by: Karol Herbst <kherbst@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5747>
This commit is contained in:
Karol Herbst 2020-07-04 22:12:10 +02:00 • committed by Marge Bot
parent 5786c63be3
commit a43eb650de
1 changed files with 45 additions and 7 deletions
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42
src/gallium/drivers/nouveau/codegen/nv50_ir_emit_gv100.cpp
View file

@ -910,6 +910,40 @@ CodeEmitterGV100::emitATOMS()
emitGPR (16, insn->def(0));
}
static void
interpApply(const FixupEntry *entry, uint32_t *code, const FixupData& data)
{
int ipa = entry->ipa;
int loc = entry->loc;
if (data.force_persample_interp &&
(ipa & NV50_IR_INTERP_SAMPLE_MASK) == NV50_IR_INTERP_DEFAULT &&
(ipa & NV50_IR_INTERP_MODE_MASK) != NV50_IR_INTERP_FLAT) {
ipa |= NV50_IR_INTERP_CENTROID;
}
int sample;
switch (ipa & NV50_IR_INTERP_SAMPLE_MASK) {
case NV50_IR_INTERP_DEFAULT : sample = 0; break;
case NV50_IR_INTERP_CENTROID: sample = 1; break;
case NV50_IR_INTERP_OFFSET : sample = 2; break;
default: assert(!"invalid sample mode");
}
int interp;
switch (ipa & NV50_IR_INTERP_MODE_MASK) {
case NV50_IR_INTERP_LINEAR :
case NV50_IR_INTERP_PERSPECTIVE: interp = 0; break;
case NV50_IR_INTERP_FLAT : interp = 1; break;
case NV50_IR_INTERP_SC : interp = 2; break;
default: assert(!"invalid ipa mode");
}
code[loc + 2] &= ~(0xf << 12);
code[loc + 2] |= sample << 12;
code[loc + 2] |= interp << 14;
}
void
CodeEmitterGV100::emitIPA()
{
@ -926,17 +960,21 @@ CodeEmitterGV100::emitIPA()
break;
}
if (insn->getSampleMode() != NV50_IR_INTERP_OFFSET) {
switch (insn->getSampleMode()) {
case NV50_IR_INTERP_DEFAULT : emitField(76, 2, 0); break;
case NV50_IR_INTERP_CENTROID: emitField(76, 2, 1); break;
case NV50_IR_INTERP_OFFSET : emitField(76, 2, 2); break;
default:
assert(!"invalid sample mode");
break;
}
if (insn->getSampleMode() != NV50_IR_INTERP_OFFSET) {
emitGPR (32);
addInterp(insn->ipa, 0xff, interpApply);
} else {
emitField(76, 2, 2);
emitGPR (32, insn->src(1));
addInterp(insn->ipa, insn->getSrc(1)->reg.data.id, interpApply);
}
assert(!insn->src(0).isIndirect(0));