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shader_decode: Implement PSETP
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@ -11,12 +11,32 @@ namespace VideoCommon::Shader {
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using Tegra::Shader::Instruction;
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using Tegra::Shader::OpCode;
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using Tegra::Shader::Pred;
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u32 ShaderIR::DecodePredicateSetPredicate(BasicBlock& bb, u32 pc) {
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const Instruction instr = {program_code[pc]};
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const auto opcode = OpCode::Decode(instr);
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UNIMPLEMENTED();
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const Node op_a = GetPredicate(instr.psetp.pred12, instr.psetp.neg_pred12 != 0);
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const Node op_b = GetPredicate(instr.psetp.pred29, instr.psetp.neg_pred29 != 0);
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// We can't use the constant predicate as destination.
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ASSERT(instr.psetp.pred3 != static_cast<u64>(Pred::UnusedIndex));
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const Node second_pred = GetPredicate(instr.psetp.pred39, instr.psetp.neg_pred39 != 0);
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const OperationCode combiner = GetPredicateCombiner(instr.psetp.op);
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const Node predicate = Operation(combiner, op_a, op_b);
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// Set the primary predicate to the result of Predicate OP SecondPredicate
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SetPredicate(bb, instr.psetp.pred3, Operation(combiner, predicate, second_pred));
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if (instr.psetp.pred0 != static_cast<u64>(Pred::UnusedIndex)) {
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// Set the secondary predicate to the result of !Predicate OP SecondPredicate, if enabled
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SetPredicate(
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bb, instr.psetp.pred0,
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Operation(combiner, Operation(OperationCode::LogicalNegate, predicate), second_pred));
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}
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return pc;
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}
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