From 4dd85f86a89338ff84d05a3981c14f6de1be4606 Mon Sep 17 00:00:00 2001
From: Feng Chen <vonchenplus@gmail.com>
Date: Fri, 19 Nov 2021 15:32:53 +0800
Subject: Implement convert legacy to generic
---
.../frontend/maxwell/translate_program.cpp | 95 ++++++++++++++++++++++
1 file changed, 95 insertions(+)
(limited to 'src/shader_recompiler/frontend/maxwell/translate_program.cpp')
diff --git a/src/shader_recompiler/frontend/maxwell/translate_program.cpp b/src/shader_recompiler/frontend/maxwell/translate_program.cpp
index 267ebe4af3..40c9307dbd 100644
--- a/src/shader_recompiler/frontend/maxwell/translate_program.cpp
+++ b/src/shader_recompiler/frontend/maxwell/translate_program.cpp
@@ -5,6 +5,7 @@
#include <algorithm>
#include <memory>
#include <vector>
+#include <queue>
#include "common/settings.h"
#include "shader_recompiler/exception.h"
@@ -226,4 +227,98 @@ IR::Program MergeDualVertexPrograms(IR::Program& vertex_a, IR::Program& vertex_b
return result;
}
+bool IsLegacyAttribute(IR::Attribute attribute) {
+ return (attribute >= IR::Attribute::ColorFrontDiffuseR &&
+ attribute <= IR::Attribute::ColorBackSpecularA) ||
+ attribute == IR::Attribute::FogCoordinate ||
+ (attribute >= IR::Attribute::FixedFncTexture0S &&
+ attribute <= IR::Attribute::FixedFncTexture9Q);
+}
+
+std::map<IR::Attribute, IR::Attribute> GenerateLegacyToGenericMappings(
+ const VaryingState& state, std::queue<IR::Attribute> ununsed_generics) {
+ std::map<IR::Attribute, IR::Attribute> mapping;
+ for (size_t index = 0; index < 4; ++index) {
+ auto attr = IR::Attribute::ColorFrontDiffuseR + index * 4;
+ if (state.AnyComponent(attr)) {
+ for (size_t i = 0; i < 4; ++i) {
+ mapping.insert({attr + i, ununsed_generics.front() + i});
+ }
+ ununsed_generics.pop();
+ }
+ }
+ if (state[IR::Attribute::FogCoordinate]) {
+ mapping.insert({IR::Attribute::FogCoordinate, ununsed_generics.front()});
+ ununsed_generics.pop();
+ }
+ for (size_t index = 0; index < IR::NUM_FIXED_FNC_TEXTURES; ++index) {
+ auto attr = IR::Attribute::FixedFncTexture0S + index * 4;
+ if (state.AnyComponent(attr)) {
+ for (size_t i = 0; i < 4; ++i) {
+ mapping.insert({attr + i, ununsed_generics.front() + i});
+ }
+ ununsed_generics.pop();
+ }
+ }
+ return mapping;
+}
+
+void ConvertLegacyToGeneric(IR::Program& program, const Shader::RuntimeInfo& runtime_info) {
+ auto& stores = program.info.stores;
+ if (stores.Legacy()) {
+ std::queue<IR::Attribute> ununsed_output_generics{};
+ for (size_t index = 0; index < IR::NUM_GENERICS; ++index) {
+ if (!stores.Generic(index)) {
+ ununsed_output_generics.push(IR::Attribute::Generic0X + index * 4);
+ }
+ }
+ auto mappings = GenerateLegacyToGenericMappings(stores, ununsed_output_generics);
+ for (IR::Block* const block : program.post_order_blocks) {
+ for (IR::Inst& inst : block->Instructions()) {
+ switch (inst.GetOpcode()) {
+ case IR::Opcode::SetAttribute: {
+ const auto attr = inst.Arg(0).Attribute();
+ if (IsLegacyAttribute(attr)) {
+ stores.Set(mappings[attr], true);
+ inst.SetArg(0, Shader::IR::Value(mappings[attr]));
+ }
+ break;
+ }
+ default:
+ break;
+ }
+ }
+ }
+ }
+
+ auto& loads = program.info.loads;
+ if (loads.Legacy()) {
+ std::queue<IR::Attribute> ununsed_input_generics{};
+ for (size_t index = 0; index < IR::NUM_GENERICS; ++index) {
+ const AttributeType input_type{runtime_info.generic_input_types[index]};
+ if (!runtime_info.previous_stage_stores.Generic(index) || !loads.Generic(index) ||
+ input_type == AttributeType::Disabled) {
+ ununsed_input_generics.push(IR::Attribute::Generic0X + index * 4);
+ }
+ }
+ auto mappings = GenerateLegacyToGenericMappings(loads, ununsed_input_generics);
+ for (IR::Block* const block : program.post_order_blocks) {
+ for (IR::Inst& inst : block->Instructions()) {
+ switch (inst.GetOpcode()) {
+ case IR::Opcode::GetAttribute: {
+ const auto attr = inst.Arg(0).Attribute();
+ if (IsLegacyAttribute(attr)) {
+ loads.Set(mappings[attr], true);
+ inst.SetArg(0, Shader::IR::Value(mappings[attr]));
+ }
+ break;
+ }
+ default:
+ break;
+ }
+ }
+ }
+ }
+}
+
} // namespace Shader::Maxwell
--
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