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GPU: Implemented the PSETP shader instruction.

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It's similar to the isetp and fsetp instructions but it works on predicates instead.
This commit is contained in:
Subv 2018-07-04 15:15:03 -05:00
parent 81a44d38ee
commit 53a55bd751
2 changed files with 43 additions and 0 deletions
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13
src/video_core/engines/shader_bytecode.h
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@ -328,6 +328,19 @@ union Instruction {
BitField<49, 3, PredCondition> cond;
} isetp;
union {
BitField<0, 3, u64> pred0;
BitField<3, 3, u64> pred3;
BitField<12, 3, u64> pred12;
BitField<15, 1, u64> neg_pred12;
BitField<24, 2, PredOperation> cond;
BitField<29, 3, u64> pred29;
BitField<32, 1, u64> neg_pred29;
BitField<39, 3, u64> pred39;
BitField<42, 1, u64> neg_pred39;
BitField<45, 2, PredOperation> op;
} psetp;
union {
BitField<39, 3, u64> pred39;
BitField<42, 1, u64> neg_pred;

30
src/video_core/renderer_opengl/gl_shader_decompiler.cpp
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@ -1477,6 +1477,36 @@ private:
}
break;
}
case OpCode::Type::PredicateSetPredicate: {
std::string op_a =
GetPredicateCondition(instr.psetp.pred12, instr.psetp.neg_pred12 != 0);
std::string op_b =
GetPredicateCondition(instr.psetp.pred29, instr.psetp.neg_pred29 != 0);
using Tegra::Shader::Pred;
// We can't use the constant predicate as destination.
ASSERT(instr.psetp.pred3 != static_cast<u64>(Pred::UnusedIndex));
std::string second_pred =
GetPredicateCondition(instr.psetp.pred39, instr.psetp.neg_pred39 != 0);
std::string combiner = GetPredicateCombiner(instr.psetp.op);
std::string predicate =
'(' + op_a + ") " + GetPredicateCombiner(instr.psetp.cond) + " (" + op_b + ')';
// Set the primary predicate to the result of Predicate OP SecondPredicate
SetPredicate(instr.psetp.pred3,
'(' + predicate + ") " + combiner + " (" + second_pred + ')');
if (instr.psetp.pred0 != static_cast<u64>(Pred::UnusedIndex)) {
// Set the secondary predicate to the result of !Predicate OP SecondPredicate,
// if enabled
SetPredicate(instr.psetp.pred0,
"!(" + predicate + ") " + combiner + " (" + second_pred + ')');
}
break;
}
case OpCode::Type::FloatSet: {
std::string op_a = instr.fset.neg_a ? "-" : "";
op_a += regs.GetRegisterAsFloat(instr.gpr8);