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shader_decode: Implement PSET
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@ -16,7 +16,22 @@ u32 ShaderIR::DecodePredicateSetRegister(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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UNIMPLEMENTED_IF_MSG(instr.generates_cc,
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"Condition codes generation in PSET is not implemented");
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const Node op_a = GetPredicate(instr.pset.pred12, instr.pset.neg_pred12 != 0);
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const Node op_b = GetPredicate(instr.pset.pred29, instr.pset.neg_pred29 != 0);
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const Node first_pred = Operation(GetPredicateCombiner(instr.pset.cond), op_a, op_b);
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const Node second_pred = GetPredicate(instr.pset.pred39, instr.pset.neg_pred39 != 0);
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const OperationCode combiner = GetPredicateCombiner(instr.pset.op);
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const Node result = Operation(combiner, first_pred, second_pred);
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const Node true_value = instr.pset.bf ? Immediate(1.0f) : Immediate(0xffffffff);
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const Node false_value = instr.pset.bf ? Immediate(0.0f) : Immediate(0);
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const Node value = Operation(OperationCode::Select, PRECISE, true_value, false_value);
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SetRegister(bb, instr.gpr0, value);
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return pc;
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}
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