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Shader_IR: Implement Injectable Custom Variables to the IR.
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parent
2b02f29a2d
commit
3c34678627
5 changed files with 70 additions and 1 deletions
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@ -391,6 +391,7 @@ public:
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DeclareVertex();
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DeclareGeometry();
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DeclareRegisters();
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DeclareCustomVariables();
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DeclarePredicates();
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DeclareLocalMemory();
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DeclareInternalFlags();
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@ -503,6 +504,16 @@ private:
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}
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}
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void DeclareCustomVariables() {
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const u32 cv_num = ir.GetCustomVariablesAmount();
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for (u32 i = 0; i < cv_num; ++i) {
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code.AddLine("float {} = 0.0f;", GetCustomVariable(i));
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}
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if (cv_num > 0) {
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code.AddNewLine();
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}
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}
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void DeclarePredicates() {
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const auto& predicates = ir.GetPredicates();
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for (const auto pred : predicates) {
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@ -780,6 +791,11 @@ private:
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return {GetRegister(index), Type::Float};
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}
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if (const auto cv = std::get_if<CustomVarNode>(&*node)) {
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const u32 index = cv->GetIndex();
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return {GetCustomVariable(index), Type::Float};
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}
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if (const auto immediate = std::get_if<ImmediateNode>(&*node)) {
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const u32 value = immediate->GetValue();
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if (value < 10) {
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@ -2250,6 +2266,10 @@ private:
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return GetDeclarationWithSuffix(index, "gpr");
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}
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std::string GetCustomVariable(u32 index) const {
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return GetDeclarationWithSuffix(index, "custom_var");
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}
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std::string GetPredicate(Tegra::Shader::Pred pred) const {
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return GetDeclarationWithSuffix(static_cast<u32>(pred), "pred");
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}
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@ -353,6 +353,7 @@ private:
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DeclareFragment();
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DeclareCompute();
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DeclareRegisters();
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DeclareCustomVariables();
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DeclarePredicates();
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DeclareLocalMemory();
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DeclareSharedMemory();
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@ -587,6 +588,15 @@ private:
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}
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}
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void DeclareCustomVariables() {
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const u32 cv_num = ir.GetCustomVariablesAmount();
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for (u32 i = 0; i < cv_num; ++i) {
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const Id id = OpVariable(t_prv_float, spv::StorageClass::Private, v_float_zero);
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Name(id, fmt::format("custom_var_{}", i));
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custom_variables.emplace(i, AddGlobalVariable(id));
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}
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}
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void DeclarePredicates() {
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for (const auto pred : ir.GetPredicates()) {
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const Id id = OpVariable(t_prv_bool, spv::StorageClass::Private, v_false);
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@ -974,6 +984,11 @@ private:
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return {OpLoad(t_float, registers.at(index)), Type::Float};
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}
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if (const auto cv = std::get_if<CustomVarNode>(&*node)) {
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const u32 index = cv->GetIndex();
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return {OpLoad(t_float, custom_variables.at(index)), Type::Float};
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}
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if (const auto immediate = std::get_if<ImmediateNode>(&*node)) {
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return {Constant(t_uint, immediate->GetValue()), Type::Uint};
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}
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@ -2505,6 +2520,7 @@ private:
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Id out_vertex{};
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Id in_vertex{};
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std::map<u32, Id> registers;
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std::map<u32, Id> custom_variables;
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std::map<Tegra::Shader::Pred, Id> predicates;
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std::map<u32, Id> flow_variables;
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Id local_memory{};
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@ -212,6 +212,7 @@ enum class MetaStackClass {
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class OperationNode;
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class ConditionalNode;
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class GprNode;
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class CustomVarNode;
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class ImmediateNode;
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class InternalFlagNode;
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class PredicateNode;
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@ -223,7 +224,7 @@ class SmemNode;
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class GmemNode;
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class CommentNode;
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using NodeData = std::variant<OperationNode, ConditionalNode, GprNode, ImmediateNode,
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using NodeData = std::variant<OperationNode, ConditionalNode, GprNode, CustomVarNode, ImmediateNode,
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InternalFlagNode, PredicateNode, AbufNode, PatchNode, CbufNode,
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LmemNode, SmemNode, GmemNode, CommentNode>;
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using Node = std::shared_ptr<NodeData>;
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@ -550,6 +551,20 @@ private:
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Tegra::Shader::Register index{};
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};
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/// A custom variable
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class CustomVarNode final {
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public:
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explicit constexpr CustomVarNode(u32 index) : index{index} {}
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u32 GetIndex() const {
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return index;
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}
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private:
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u32 index{};
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};
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/// A 32-bits value that represents an immediate value
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class ImmediateNode final {
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public:
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@ -39,6 +39,10 @@ Node ShaderIR::GetRegister(Register reg) {
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return MakeNode<GprNode>(reg);
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}
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Node ShaderIR::GetCustomVariable(u32 id) {
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return MakeNode<CustomVarNode>(id);
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}
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Node ShaderIR::GetImmediate19(Instruction instr) {
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return Immediate(instr.alu.GetImm20_19());
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}
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@ -453,4 +457,9 @@ std::size_t ShaderIR::DeclareAmend(Node new_amend) {
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return id;
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}
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u32 ShaderIR::NewCustomVariable() {
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const u32 id = num_custom_variables++;
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return id;
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}
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} // namespace VideoCommon::Shader
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@ -180,6 +180,10 @@ public:
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return amend_code[index];
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}
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u32 GetCustomVariablesAmount() const {
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return num_custom_variables;
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}
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private:
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friend class ASTDecoder;
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@ -236,6 +240,8 @@ private:
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/// Generates a node for a passed register.
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Node GetRegister(Tegra::Shader::Register reg);
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/// Generates a node for a custom variable
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Node GetCustomVariable(u32 id);
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/// Generates a node representing a 19-bit immediate value
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Node GetImmediate19(Tegra::Shader::Instruction instr);
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/// Generates a node representing a 32-bit immediate value
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@ -403,6 +409,8 @@ private:
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/// Register new amending code and obtain the reference id.
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std::size_t DeclareAmend(Node new_amend);
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u32 NewCustomVariable();
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const ProgramCode& program_code;
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const u32 main_offset;
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const CompilerSettings settings;
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@ -418,6 +426,7 @@ private:
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NodeBlock global_code;
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ASTManager program_manager{true, true};
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std::vector<Node> amend_code;
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u32 num_custom_variables{};
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std::set<u32> used_registers;
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std::set<Tegra::Shader::Pred> used_predicates;
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