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shader_decode: Implement ISETP

This commit is contained in:
ReinUsesLisp 2018-12-17 17:30:33 -03:00
parent 80183de884
commit faadae5814
1 changed files with 30 additions and 1 deletions
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31
src/video_core/shader/decode/integer_set_predicate.cpp
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@ -11,12 +11,41 @@ namespace VideoCommon::Shader {
using Tegra::Shader::Instruction;
using Tegra::Shader::OpCode;
using Tegra::Shader::Pred;
u32 ShaderIR::DecodeIntegerSetPredicate(BasicBlock& bb, u32 pc) {
const Instruction instr = {program_code[pc]};
const auto opcode = OpCode::Decode(instr);
UNIMPLEMENTED();
const Node op_a = GetRegister(instr.gpr8);
const Node op_b = [&]() {
if (instr.is_b_imm) {
return Immediate(instr.alu.GetSignedImm20_20());
} else if (instr.is_b_gpr) {
return GetRegister(instr.gpr20);
} else {
return GetConstBuffer(instr.cbuf34.index, instr.cbuf34.offset);
}
}();
// We can't use the constant predicate as destination.
ASSERT(instr.isetp.pred3 != static_cast<u64>(Pred::UnusedIndex));
const Node second_pred = GetPredicate(instr.isetp.pred39, instr.isetp.neg_pred != 0);
const Node predicate =
GetPredicateComparisonInteger(instr.isetp.cond, instr.isetp.is_signed, op_a, op_b);
// Set the primary predicate to the result of Predicate OP SecondPredicate
const OperationCode combiner = GetPredicateCombiner(instr.isetp.op);
const Node value = Operation(combiner, predicate, second_pred);
SetPredicate(bb, instr.isetp.pred3, value);
if (instr.isetp.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, predicate);
SetPredicate(bb, instr.isetp.pred0, Operation(combiner, negated_pred, second_pred));
}
return pc;
}