From 0b4014d6658b17e18a823c1547480959fd10fe70 Mon Sep 17 00:00:00 2001
From: Swung0x48 <swung0x48@outlook.com>
Date: Sat, 24 Jan 2026 22:14:00 +0800
Subject: [PATCH] [Feat] (MG_Util/ShaderTranspiler): patch op
 `OpFOrdNotEqual`/`OpFUnordNotEqual`

---
 .../FloatEqualsZeroEliminationPass.cpp        | 24 +++++++++++++++----
 1 file changed, 19 insertions(+), 5 deletions(-)

diff --git a/MobileGL/MG_Util/ShaderTranspiler/SpirvPasses/FloatEqualsZeroEliminationPass.cpp b/MobileGL/MG_Util/ShaderTranspiler/SpirvPasses/FloatEqualsZeroEliminationPass.cpp
index c454652a..d0f79cdc 100644
--- a/MobileGL/MG_Util/ShaderTranspiler/SpirvPasses/FloatEqualsZeroEliminationPass.cpp
+++ b/MobileGL/MG_Util/ShaderTranspiler/SpirvPasses/FloatEqualsZeroEliminationPass.cpp
@@ -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