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shader: Implement BAR and fix memory barriers

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This commit is contained in:
ReinUsesLisp 2021-04-04 03:04:48 -03:00 • committed by ameerj
parent 85795de99f
commit fc93bc2abd
7 changed files with 79 additions and 5 deletions
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58
src/shader_recompiler/frontend/maxwell/translate/impl/barrier_operations.cpp
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@ -38,6 +38,7 @@ void TranslatorVisitor::MEMBAR(u64 inst) {
u64 raw;
BitField<8, 2, LocalScope> scope;
} membar{inst};
ir.MemoryBarrier(LocalScopeToMemoryScope(membar.scope));
}
@ -45,8 +46,61 @@ void TranslatorVisitor::DEPBAR() {
// DEPBAR is a no-op
}
void TranslatorVisitor::BAR(u64) {
throw NotImplementedException("Instruction {} is not implemented", Opcode::BAR);
void TranslatorVisitor::BAR(u64 insn) {
enum class Mode {
RedPopc,
Scan,
RedAnd,
RedOr,
Sync,
Arrive,
};
union {
u64 raw;
BitField<43, 1, u64> is_a_imm;
BitField<44, 1, u64> is_b_imm;
BitField<8, 8, u64> imm_a;
BitField<20, 12, u64> imm_b;
BitField<42, 1, u64> neg_pred;
BitField<39, 3, IR::Pred> pred;
} const bar{insn};
const Mode mode{[insn] {
switch (insn & 0x0000009B00000000ULL) {
case 0x0000000200000000ULL:
return Mode::RedPopc;
case 0x0000000300000000ULL:
return Mode::Scan;
case 0x0000000A00000000ULL:
return Mode::RedAnd;
case 0x0000001200000000ULL:
return Mode::RedOr;
case 0x0000008000000000ULL:
return Mode::Sync;
case 0x0000008100000000ULL:
return Mode::Arrive;
}
throw NotImplementedException("Invalid encoding");
}()};
if (mode != Mode::Sync) {
throw NotImplementedException("BAR mode {}", mode);
}
if (bar.is_a_imm == 0) {
throw NotImplementedException("Non-immediate input A");
}
if (bar.imm_a != 0) {
throw NotImplementedException("Non-zero input A");
}
if (bar.is_b_imm == 0) {
throw NotImplementedException("Non-immediate input B");
}
if (bar.imm_b != 0) {
throw NotImplementedException("Non-zero input B");
}
if (bar.pred != IR::Pred::PT && bar.neg_pred != 0) {
throw NotImplementedException("Non-true input predicate");
}
ir.Barrier();
}
} // namespace Shader::Maxwell