diff options
Diffstat (limited to 'src/shader_recompiler/ir_opt/constant_propagation_pass.cpp')
-rw-r--r-- | src/shader_recompiler/ir_opt/constant_propagation_pass.cpp | 76 |
1 files changed, 73 insertions, 3 deletions
diff --git a/src/shader_recompiler/ir_opt/constant_propagation_pass.cpp b/src/shader_recompiler/ir_opt/constant_propagation_pass.cpp index 826f9a54a..4d81e9336 100644 --- a/src/shader_recompiler/ir_opt/constant_propagation_pass.cpp +++ b/src/shader_recompiler/ir_opt/constant_propagation_pass.cpp @@ -7,6 +7,7 @@ #include <type_traits> #include "common/bit_cast.h" +#include "shader_recompiler/environment.h" #include "shader_recompiler/exception.h" #include "shader_recompiler/frontend/ir/ir_emitter.h" #include "shader_recompiler/frontend/ir/value.h" @@ -515,6 +516,9 @@ void FoldBitCast(IR::Inst& inst, IR::Opcode reverse) { case IR::Attribute::PrimitiveId: case IR::Attribute::InstanceId: case IR::Attribute::VertexId: + case IR::Attribute::BaseVertex: + case IR::Attribute::BaseInstance: + case IR::Attribute::DrawID: break; default: return; @@ -644,7 +648,63 @@ void FoldFSwizzleAdd(IR::Block& block, IR::Inst& inst) { } } -void ConstantPropagation(IR::Block& block, IR::Inst& inst) { +void FoldConstBuffer(Environment& env, IR::Block& block, IR::Inst& inst) { + const IR::Value bank{inst.Arg(0)}; + const IR::Value offset{inst.Arg(1)}; + if (!bank.IsImmediate() || !offset.IsImmediate()) { + return; + } + const auto bank_value = bank.U32(); + const auto offset_value = offset.U32(); + auto replacement = env.GetReplaceConstBuffer(bank_value, offset_value); + if (!replacement) { + return; + } + const auto new_attribute = [replacement]() { + switch (*replacement) { + case ReplaceConstant::BaseInstance: + return IR::Attribute::BaseInstance; + case ReplaceConstant::BaseVertex: + return IR::Attribute::BaseVertex; + case ReplaceConstant::DrawID: + return IR::Attribute::DrawID; + default: + throw NotImplementedException("Not implemented replacement variable {}", *replacement); + } + }(); + IR::IREmitter ir{block, IR::Block::InstructionList::s_iterator_to(inst)}; + if (inst.GetOpcode() == IR::Opcode::GetCbufU32) { + inst.ReplaceUsesWith(ir.GetAttributeU32(new_attribute)); + } else { + inst.ReplaceUsesWith(ir.GetAttribute(new_attribute)); + } +} + +void FoldDriverConstBuffer(Environment& env, IR::Block& block, IR::Inst& inst, u32 which_bank, + u32 offset_start = 0, u32 offset_end = std::numeric_limits<u16>::max()) { + const IR::Value bank{inst.Arg(0)}; + const IR::Value offset{inst.Arg(1)}; + if (!bank.IsImmediate() || !offset.IsImmediate()) { + return; + } + const auto bank_value = bank.U32(); + if (bank_value != which_bank) { + return; + } + const auto offset_value = offset.U32(); + if (offset_value < offset_start || offset_value >= offset_end) { + return; + } + IR::IREmitter ir{block, IR::Block::InstructionList::s_iterator_to(inst)}; + if (inst.GetOpcode() == IR::Opcode::GetCbufU32) { + inst.ReplaceUsesWith(IR::Value{env.ReadCbufValue(bank_value, offset_value)}); + } else { + inst.ReplaceUsesWith( + IR::Value{Common::BitCast<f32>(env.ReadCbufValue(bank_value, offset_value))}); + } +} + +void ConstantPropagation(Environment& env, IR::Block& block, IR::Inst& inst) { switch (inst.GetOpcode()) { case IR::Opcode::GetRegister: return FoldGetRegister(inst); @@ -789,18 +849,28 @@ void ConstantPropagation(IR::Block& block, IR::Inst& inst) { IR::Opcode::CompositeInsertF16x4); case IR::Opcode::FSwizzleAdd: return FoldFSwizzleAdd(block, inst); + case IR::Opcode::GetCbufF32: + case IR::Opcode::GetCbufU32: + if (env.HasHLEMacroState()) { + FoldConstBuffer(env, block, inst); + } + if (env.IsPropietaryDriver()) { + FoldDriverConstBuffer(env, block, inst, 1); + } + break; default: break; } } + } // Anonymous namespace -void ConstantPropagationPass(IR::Program& program) { +void ConstantPropagationPass(Environment& env, IR::Program& program) { const auto end{program.post_order_blocks.rend()}; for (auto it = program.post_order_blocks.rbegin(); it != end; ++it) { IR::Block* const block{*it}; for (IR::Inst& inst : block->Instructions()) { - ConstantPropagation(*block, inst); + ConstantPropagation(env, *block, inst); } } } |