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shader/half_set_predicate: Fix HSETP2 implementation

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This commit is contained in:
ReinUsesLisp
2019-07-19 22:20:34 -03:00
parent 6c4985edc9
commit 45c162444d
4 changed files with 23 additions and 44 deletions
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31
src/video_core/shader/decode/half_set_predicate.cpp
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@ -51,26 +51,23 @@ u32 ShaderIR::DecodeHalfSetPredicate(NodeBlock& bb, u32 pc) {
op_b = Immediate(0);
}
// We can't use the constant predicate as destination.
ASSERT(instr.hsetp2.pred3 != static_cast<u64>(Pred::UnusedIndex));
const Node second_pred = GetPredicate(instr.hsetp2.pred39, instr.hsetp2.neg_pred != 0);
const OperationCode combiner = GetPredicateCombiner(instr.hsetp2.op);
const OperationCode pair_combiner =
h_and ? OperationCode::LogicalAll2 : OperationCode::LogicalAny2;
const Node pred39 = GetPredicate(instr.hsetp2.pred39, instr.hsetp2.neg_pred);
const auto Write = [&](u64 dest, Node src) {
SetPredicate(bb, dest, Operation(combiner, std::move(src), pred39));
};
const Node comparison = GetPredicateComparisonHalf(cond, op_a, op_b);
const Node first_pred = Operation(pair_combiner, comparison);
// Set the primary predicate to the result of Predicate OP SecondPredicate
const Node value = Operation(combiner, first_pred, second_pred);
SetPredicate(bb, instr.hsetp2.pred3, value);
if (instr.hsetp2.pred0 != static_cast<u64>(Pred::UnusedIndex)) {
// Set the secondary predicate to the result of !Predicate OP SecondPredicate, if enabled
const Node negated_pred = Operation(OperationCode::LogicalNegate, first_pred);
SetPredicate(bb, instr.hsetp2.pred0, Operation(combiner, negated_pred, second_pred));
const u64 first = instr.hsetp2.pred0;
const u64 second = instr.hsetp2.pred3;
if (h_and) {
const Node joined = Operation(OperationCode::LogicalAnd2, comparison);
Write(first, joined);
Write(second, Operation(OperationCode::LogicalNegate, joined));
} else {
Write(first, Operation(OperationCode::LogicalPick2, comparison, Immediate(0u)));
Write(second, Operation(OperationCode::LogicalPick2, comparison, Immediate(1u)));
}
return pc;

3
src/video_core/shader/node.h
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@ -101,8 +101,7 @@ enum class OperationCode {
LogicalXor, /// (bool a, bool b) -> bool
LogicalNegate, /// (bool a) -> bool
LogicalPick2, /// (bool2 pair, uint index) -> bool
LogicalAll2, /// (bool2 a) -> bool
LogicalAny2, /// (bool2 a) -> bool
LogicalAnd2, /// (bool2 a) -> bool
LogicalFLessThan, /// (float a, float b) -> bool
LogicalFEqual, /// (float a, float b) -> bool