diff options
| -rw-r--r-- | src/shader_recompiler/ir_opt/rescaling_pass.cpp | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/src/shader_recompiler/ir_opt/rescaling_pass.cpp b/src/shader_recompiler/ir_opt/rescaling_pass.cpp index 81098c038..c28500dd1 100644 --- a/src/shader_recompiler/ir_opt/rescaling_pass.cpp +++ b/src/shader_recompiler/ir_opt/rescaling_pass.cpp @@ -30,7 +30,7 @@ namespace { return false; } -void VisitMark(const IR::Inst& inst) { +void VisitMark(IR::Block& block, IR::Inst& inst) { switch (inst.GetOpcode()) { case IR::Opcode::ShuffleIndex: case IR::Opcode::ShuffleUp: @@ -49,19 +49,30 @@ void VisitMark(const IR::Inst& inst) { break; } IR::Inst* const bitcast_inst{bitcast_arg.InstRecursive()}; + bool must_patch_outside = false; if (bitcast_inst->GetOpcode() == IR::Opcode::GetAttribute) { const IR::Attribute attr{bitcast_inst->Arg(0).Attribute()}; switch (attr) { case IR::Attribute::PositionX: case IR::Attribute::PositionY: bitcast_inst->SetFlags<u32>(0xDEADBEEF); + must_patch_outside = true; break; default: break; } } + if (must_patch_outside) { + const auto it{IR::Block::InstructionList::s_iterator_to(inst)}; + IR::IREmitter ir{block, IR::Block::InstructionList::s_iterator_to(inst)}; + const IR::F32 new_inst{&*block.PrependNewInst(it, inst)}; + const IR::F32 up_factor{ir.FPRecip(ir.ResolutionDownFactor())}; + const IR::Value converted{ir.FPMul(new_inst, up_factor)}; + inst.ReplaceUsesWith(converted); + } break; } + default: break; } @@ -302,7 +313,7 @@ void RescalingPass(IR::Program& program) { if (is_fragment_shader) { for (IR::Block* const block : program.post_order_blocks) { for (IR::Inst& inst : block->Instructions()) { - VisitMark(inst); + VisitMark(*block, inst); } } } |