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| |
|
|
| #include <algorithm> |
| #include <bit> |
| #include <optional> |
|
|
| #include <boost/container/small_vector.hpp> |
|
|
| #include "shader_recompiler/environment.h" |
| #include "shader_recompiler/frontend/ir/basic_block.h" |
| #include "shader_recompiler/frontend/ir/breadth_first_search.h" |
| #include "shader_recompiler/frontend/ir/ir_emitter.h" |
| #include "shader_recompiler/host_translate_info.h" |
| #include "shader_recompiler/ir_opt/passes.h" |
| #include "shader_recompiler/shader_info.h" |
|
|
| namespace Shader::Optimization { |
|
|
| static IR::Attribute EmulatedLayerAttribute(VaryingState& stores) { |
| for (u32 i = 0; i < 32; i++) { |
| if (!stores.Generic(i)) { |
| return IR::Attribute::Generic0X + (i * 4); |
| } |
| } |
| return IR::Attribute::Layer; |
| } |
|
|
| static bool PermittedProgramStage(Stage stage) { |
| switch (stage) { |
| case Stage::VertexA: |
| case Stage::VertexB: |
| case Stage::TessellationControl: |
| case Stage::TessellationEval: |
| return true; |
| default: |
| return false; |
| } |
| } |
|
|
| void LayerPass(IR::Program& program, const HostTranslateInfo& host_info) { |
| if (host_info.support_viewport_index_layer || !PermittedProgramStage(program.stage)) { |
| return; |
| } |
|
|
| const auto end{program.post_order_blocks.end()}; |
| const auto layer_attribute = EmulatedLayerAttribute(program.info.stores); |
| bool requires_layer_emulation = false; |
|
|
| for (auto block = program.post_order_blocks.begin(); block != end; ++block) { |
| for (IR::Inst& inst : (*block)->Instructions()) { |
| if (inst.GetOpcode() == IR::Opcode::SetAttribute && |
| inst.Arg(0).Attribute() == IR::Attribute::Layer) { |
| requires_layer_emulation = true; |
| inst.SetArg(0, IR::Value{layer_attribute}); |
| } |
| } |
| } |
|
|
| if (requires_layer_emulation) { |
| program.info.requires_layer_emulation = true; |
| program.info.emulated_layer = layer_attribute; |
| program.info.stores.Set(IR::Attribute::Layer, false); |
| program.info.stores.Set(layer_attribute, true); |
| } |
| } |
|
|
| } |
|
|
