shader: Fix FSwizzleAdd folding when going through phi nodes

5 years ago · ca3e927e35
1 changed files with 2 additions and 2 deletions
--- a/src/shader_recompiler/ir_opt/constant_propagation_pass.cpp
+++ b/src/shader_recompiler/ir_opt/constant_propagation_pass.cpp
@ -440,13 +440,13 @@ void FoldFSwizzleAdd(IR::Block& block, IR::Inst& inst) {
        // DPdxFine
        if (index.U32() == 1) {
            IR::IREmitter ir{block, IR::Block::InstructionList::s_iterator_to(inst)};
-            inst.ReplaceUsesWith(ir.DPdxFine(IR::F32{value_2}));
+            inst.ReplaceUsesWith(ir.DPdxFine(IR::F32{inst.Arg(1)}));
        }
    } else if (swizzle_value == 0xA5) {
        // DPdyFine
        if (index.U32() == 2) {
            IR::IREmitter ir{block, IR::Block::InstructionList::s_iterator_to(inst)};
-            inst.ReplaceUsesWith(ir.DPdyFine(IR::F32{value_2}));
+            inst.ReplaceUsesWith(ir.DPdyFine(IR::F32{inst.Arg(1)}));
        }
    }
 }