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Merge pull request #2811 from ReinUsesLisp/fsetp-fix 

float_set_predicate: Add missing negation bit for the second operand
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bunnei 2019-09-03 22:34:34 -04:00 committed by GitHub
parent 137d165672 6207751b00
commit d4f33b822b
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2 changed files with 6 additions and 4 deletions
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1
src/video_core/engines/shader_bytecode.h
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@ -886,6 +886,7 @@ union Instruction {
union {
BitField<0, 3, u64> pred0;
BitField<3, 3, u64> pred3;
BitField<6, 1, u64> neg_b;
BitField<7, 1, u64> abs_a;
BitField<39, 3, u64> pred39;
BitField<42, 1, u64> neg_pred;

7
src/video_core/shader/decode/float_set_predicate.cpp
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@ -17,7 +17,7 @@ using Tegra::Shader::Pred;
u32 ShaderIR::DecodeFloatSetPredicate(NodeBlock& bb, u32 pc) {
const Instruction instr = {program_code[pc]};
const Node op_a = GetOperandAbsNegFloat(GetRegister(instr.gpr8), instr.fsetp.abs_a != 0,
Node op_a = GetOperandAbsNegFloat(GetRegister(instr.gpr8), instr.fsetp.abs_a != 0,
instr.fsetp.neg_a != 0);
Node op_b = [&]() {
if (instr.is_b_imm) {
@ -28,12 +28,13 @@ u32 ShaderIR::DecodeFloatSetPredicate(NodeBlock& bb, u32 pc) {
return GetConstBuffer(instr.cbuf34.index, instr.cbuf34.GetOffset());
}
}();
op_b = GetOperandAbsNegFloat(op_b, instr.fsetp.abs_b, false);
op_b = GetOperandAbsNegFloat(std::move(op_b), instr.fsetp.abs_b, instr.fsetp.neg_b);
// We can't use the constant predicate as destination.
ASSERT(instr.fsetp.pred3 != static_cast<u64>(Pred::UnusedIndex));
const Node predicate = GetPredicateComparisonFloat(instr.fsetp.cond, op_a, op_b);
const Node predicate =
GetPredicateComparisonFloat(instr.fsetp.cond, std::move(op_a), std::move(op_b));
const Node second_pred = GetPredicate(instr.fsetp.pred39, instr.fsetp.neg_pred != 0);
const OperationCode combiner = GetPredicateCombiner(instr.fsetp.op);