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shader_decode: Implement HSET2
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@ -2,6 +2,8 @@
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include <array>
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#include "common/assert.h"
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#include "common/common_types.h"
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#include "video_core/engines/shader_bytecode.h"
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@ -16,7 +18,47 @@ u32 ShaderIR::DecodeHalfSet(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(instr.hset2.ftz != 0);
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// instr.hset2.type_a
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// instr.hset2.type_b
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Node op_a = GetRegister(instr.gpr8);
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Node op_b = [&]() {
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switch (opcode->get().GetId()) {
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case OpCode::Id::HSET2_R:
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return GetRegister(instr.gpr20);
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default:
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UNREACHABLE();
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return Immediate(0);
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}
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}();
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op_a = GetOperandAbsNegHalf(op_a, instr.hset2.abs_a, instr.hset2.negate_a);
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op_b = GetOperandAbsNegHalf(op_b, instr.hset2.abs_b, instr.hset2.negate_b);
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const Node second_pred = GetPredicate(instr.hset2.pred39, instr.hset2.neg_pred);
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MetaHalfArithmetic meta{false, {instr.hset2.type_a, instr.hset2.type_b}};
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const Node comparison_pair = GetPredicateComparisonHalf(instr.hset2.cond, meta, op_a, op_b);
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const OperationCode combiner = GetPredicateCombiner(instr.hset2.op);
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// HSET2 operates on each half float in the pack.
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std::array<Node, 2> values;
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for (u32 i = 0; i < 2; ++i) {
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const u32 raw_value = instr.hset2.bf ? 0x3c00 : 0xffff;
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const Node true_value = Immediate(raw_value << (i * 16));
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const Node false_value = Immediate(0);
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const Node comparison =
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Operation(OperationCode::LogicalPick2, comparison_pair, Immediate(i));
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const Node predicate = Operation(combiner, comparison, second_pred);
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values[i] = Operation(OperationCode::Select, NO_PRECISE, predicate, true_value, false_value);
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}
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const Node value = Operation(OperationCode::UBitwiseOr, NO_PRECISE, values[0], values[1]);
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SetRegister(bb, instr.gpr0, value);
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return pc;
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}
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@ -1012,6 +1012,11 @@ private:
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return GenerateUnary(operation, "!", Type::Bool, Type::Bool, false);
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}
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std::string LogicalPick2(Operation operation) {
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const std::string pair = VisitOperand(operation, 0, Type::Bool2);
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return pair + '[' + VisitOperand(operation, 1, Type::Uint) + ']';
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}
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std::string LogicalAll2(Operation operation) {
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return GenerateUnary(operation, "all", Type::Bool, Type::Bool2);
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}
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@ -1306,6 +1311,7 @@ private:
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&LogicalOr,
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&LogicalXor,
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&LogicalNegate,
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&LogicalPick2,
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&LogicalAll2,
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&LogicalAny2,
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@ -122,6 +122,7 @@ enum class OperationCode {
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LogicalOr, /// (bool a, bool b) -> bool
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LogicalXor, /// (bool a, bool b) -> bool
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LogicalNegate, /// (bool a) -> bool
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LogicalPick2, /// (bool2 pair, uint index) -> bool
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LogicalAll2, /// (bool2 a) -> bool
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LogicalAny2, /// (bool2 a) -> bool
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