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[Feat] (MG_Util/ShaderTranspiler): patch op OpFOrdNotEqual/OpFUnordNotEqual

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swung0x48
2026-01-24 22:14:00 +08:00
parent e9ef6db44b
commit 0b4014d665
1 changed files with 19 additions and 5 deletions
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MobileGL/MG_Util/ShaderTranspiler/SpirvPasses/FloatEqualsZeroEliminationPass.cpp
+19 -5
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@@ -42,12 +42,25 @@ namespace MobileGL {
for (auto itInst = bb.begin(); itInst != bb.end(); ++itInst) {
auto& inst = *itInst;
// Check if opcode is `OpFOrdEqual` or `OpFUnordEqual`
if (inst.opcode() != spv::Op::OpFOrdEqual &&
inst.opcode() != spv::Op::OpFUnordEqual) {
continue;
bool shouldSkip = true;
// Check if opcode is `OpFOrdEqual`, `OpFUnordEqual`,
// `OpFOrdNotEqual` or `OpFUnordNotEqual`,
// simply skip if irrelevant
switch (inst.opcode()) {
case spv::Op::OpFOrdEqual:
case spv::Op::OpFUnordEqual:
case spv::Op::OpFOrdNotEqual:
case spv::Op::OpFUnordNotEqual:
shouldSkip = false;
break;
default:
break;
}
if (shouldSkip)
continue;
// check if operand is "float 0.0"
// OpFOrdEqual ResultType ResultID Operand1 Operand2
uint32_t op1_id = inst.GetSingleWordInOperand(0);
@@ -114,9 +127,10 @@ namespace MobileGL {
less_operands.push_back({spv_operand_type_t::SPV_OPERAND_TYPE_ID, {abs_inst->result_id()}});
less_operands.push_back({spv_operand_type_t::SPV_OPERAND_TYPE_ID, {eps_id}});
bool isEqualOp = (inst.opcode() == spv::Op::OpFOrdEqual || inst.opcode() == spv::Op::OpFUnordEqual);
Instruction* less_than_inst = builder.AddInstruction(MakeUnique<Instruction>(
context(),
spv::Op::OpFOrdLessThan,
isEqualOp ? spv::Op::OpFOrdLessThan : spv::Op::OpFOrdGreaterThanEqual,
bool_type_id,
context()->TakeNextId(),
less_operands