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Merge pull request #2306 from ReinUsesLisp/aoffi
shader_ir: Implement AOFFI for TEX and TLD4
This commit is contained in:
bunnei
GitHub
commit
8aaf418bd6
4 changed files with 207 additions and 73 deletions
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@ -21,6 +21,8 @@
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namespace OpenGL::GLShader {
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namespace {
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using Tegra::Shader::Attribute;
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using Tegra::Shader::AttributeUse;
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using Tegra::Shader::Header;
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@ -34,14 +36,18 @@ using Maxwell = Tegra::Engines::Maxwell3D::Regs;
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using ShaderStage = Tegra::Engines::Maxwell3D::Regs::ShaderStage;
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using Operation = const OperationNode&;
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enum class Type { Bool, Bool2, Float, Int, Uint, HalfFloat };
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struct TextureAoffi {};
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using TextureArgument = std::pair<Type, Node>;
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using TextureIR = std::variant<TextureAoffi, TextureArgument>;
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enum : u32 { POSITION_VARYING_LOCATION = 0, GENERIC_VARYING_START_LOCATION = 1 };
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constexpr u32 MAX_CONSTBUFFER_ELEMENTS =
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static_cast<u32>(RasterizerOpenGL::MaxConstbufferSize) / (4 * sizeof(float));
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constexpr u32 MAX_GLOBALMEMORY_ELEMENTS =
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static_cast<u32>(RasterizerOpenGL::MaxGlobalMemorySize) / sizeof(float);
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enum class Type { Bool, Bool2, Float, Int, Uint, HalfFloat };
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class ShaderWriter {
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public:
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void AddExpression(std::string_view text) {
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@ -91,7 +97,7 @@ private:
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};
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/// Generates code to use for a swizzle operation.
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static std::string GetSwizzle(u32 elem) {
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std::string GetSwizzle(u32 elem) {
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ASSERT(elem <= 3);
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std::string swizzle = ".";
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swizzle += "xyzw"[elem];
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@ -99,7 +105,7 @@ static std::string GetSwizzle(u32 elem) {
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}
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/// Translate topology
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static std::string GetTopologyName(Tegra::Shader::OutputTopology topology) {
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std::string GetTopologyName(Tegra::Shader::OutputTopology topology) {
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switch (topology) {
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case Tegra::Shader::OutputTopology::PointList:
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return "points";
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@ -114,7 +120,7 @@ static std::string GetTopologyName(Tegra::Shader::OutputTopology topology) {
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}
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/// Returns true if an object has to be treated as precise
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static bool IsPrecise(Operation operand) {
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bool IsPrecise(Operation operand) {
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const auto& meta = operand.GetMeta();
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if (const auto arithmetic = std::get_if<MetaArithmetic>(&meta)) {
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@ -126,7 +132,7 @@ static bool IsPrecise(Operation operand) {
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return false;
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}
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static bool IsPrecise(Node node) {
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bool IsPrecise(Node node) {
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if (const auto operation = std::get_if<OperationNode>(node)) {
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return IsPrecise(*operation);
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}
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@ -723,8 +729,8 @@ private:
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result_type));
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}
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std::string GenerateTexture(Operation operation, const std::string& func,
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const std::vector<std::pair<Type, Node>>& extras) {
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std::string GenerateTexture(Operation operation, const std::string& function_suffix,
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const std::vector<TextureIR>& extras) {
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constexpr std::array<const char*, 4> coord_constructors = {"float", "vec2", "vec3", "vec4"};
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const auto meta = std::get_if<MetaTexture>(&operation.GetMeta());
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@ -734,11 +740,11 @@ private:
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const bool has_array = meta->sampler.IsArray();
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const bool has_shadow = meta->sampler.IsShadow();
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std::string expr = func;
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expr += '(';
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expr += GetSampler(meta->sampler);
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expr += ", ";
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std::string expr = "texture" + function_suffix;
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if (!meta->aoffi.empty()) {
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expr += "Offset";
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}
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expr += '(' + GetSampler(meta->sampler) + ", ";
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expr += coord_constructors.at(count + (has_array ? 1 : 0) + (has_shadow ? 1 : 0) - 1);
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expr += '(';
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for (std::size_t i = 0; i < count; ++i) {
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@ -756,38 +762,76 @@ private:
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}
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expr += ')';
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for (const auto& extra_pair : extras) {
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const auto [type, operand] = extra_pair;
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if (operand == nullptr) {
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continue;
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}
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expr += ", ";
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switch (type) {
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case Type::Int:
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if (const auto immediate = std::get_if<ImmediateNode>(operand)) {
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// Inline the string as an immediate integer in GLSL (some extra arguments are
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// required to be constant)
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expr += std::to_string(static_cast<s32>(immediate->GetValue()));
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} else {
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expr += "ftoi(" + Visit(operand) + ')';
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}
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break;
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case Type::Float:
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expr += Visit(operand);
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break;
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default: {
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const auto type_int = static_cast<u32>(type);
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UNIMPLEMENTED_MSG("Unimplemented extra type={}", type_int);
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expr += '0';
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break;
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}
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for (const auto& variant : extras) {
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if (const auto argument = std::get_if<TextureArgument>(&variant)) {
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expr += GenerateTextureArgument(*argument);
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} else if (std::get_if<TextureAoffi>(&variant)) {
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expr += GenerateTextureAoffi(meta->aoffi);
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} else {
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UNREACHABLE();
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}
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}
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return expr + ')';
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}
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std::string GenerateTextureArgument(TextureArgument argument) {
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const auto [type, operand] = argument;
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if (operand == nullptr) {
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return {};
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}
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std::string expr = ", ";
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switch (type) {
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case Type::Int:
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if (const auto immediate = std::get_if<ImmediateNode>(operand)) {
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// Inline the string as an immediate integer in GLSL (some extra arguments are
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// required to be constant)
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expr += std::to_string(static_cast<s32>(immediate->GetValue()));
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} else {
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expr += "ftoi(" + Visit(operand) + ')';
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}
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break;
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case Type::Float:
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expr += Visit(operand);
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break;
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default: {
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const auto type_int = static_cast<u32>(type);
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UNIMPLEMENTED_MSG("Unimplemented extra type={}", type_int);
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expr += '0';
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break;
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}
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}
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return expr;
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}
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std::string GenerateTextureAoffi(const std::vector<Node>& aoffi) {
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if (aoffi.empty()) {
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return {};
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}
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constexpr std::array<const char*, 3> coord_constructors = {"int", "ivec2", "ivec3"};
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std::string expr = ", ";
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expr += coord_constructors.at(aoffi.size() - 1);
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expr += '(';
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for (std::size_t index = 0; index < aoffi.size(); ++index) {
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const auto operand{aoffi.at(index)};
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if (const auto immediate = std::get_if<ImmediateNode>(operand)) {
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// Inline the string as an immediate integer in GLSL (AOFFI arguments are required
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// to be constant by the standard).
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expr += std::to_string(static_cast<s32>(immediate->GetValue()));
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} else {
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expr += "ftoi(" + Visit(operand) + ')';
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}
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if (index + 1 < aoffi.size()) {
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expr += ", ";
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}
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}
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expr += ')';
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return expr;
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}
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std::string Assign(Operation operation) {
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const Node dest = operation[0];
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const Node src = operation[1];
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@ -1164,7 +1208,8 @@ private:
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const auto meta = std::get_if<MetaTexture>(&operation.GetMeta());
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ASSERT(meta);
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std::string expr = GenerateTexture(operation, "texture", {{Type::Float, meta->bias}});
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std::string expr = GenerateTexture(
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operation, "", {TextureAoffi{}, TextureArgument{Type::Float, meta->bias}});
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if (meta->sampler.IsShadow()) {
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expr = "vec4(" + expr + ')';
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}
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@ -1175,7 +1220,8 @@ private:
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const auto meta = std::get_if<MetaTexture>(&operation.GetMeta());
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ASSERT(meta);
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std::string expr = GenerateTexture(operation, "textureLod", {{Type::Float, meta->lod}});
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std::string expr = GenerateTexture(
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operation, "Lod", {TextureArgument{Type::Float, meta->lod}, TextureAoffi{}});
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if (meta->sampler.IsShadow()) {
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expr = "vec4(" + expr + ')';
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}
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@ -1187,7 +1233,8 @@ private:
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ASSERT(meta);
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const auto type = meta->sampler.IsShadow() ? Type::Float : Type::Int;
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return GenerateTexture(operation, "textureGather", {{type, meta->component}}) +
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return GenerateTexture(operation, "Gather",
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{TextureArgument{type, meta->component}, TextureAoffi{}}) +
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GetSwizzle(meta->element);
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}
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@ -1217,8 +1264,8 @@ private:
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ASSERT(meta);
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if (meta->element < 2) {
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return "itof(int((" + GenerateTexture(operation, "textureQueryLod", {}) +
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" * vec2(256))" + GetSwizzle(meta->element) + "))";
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return "itof(int((" + GenerateTexture(operation, "QueryLod", {}) + " * vec2(256))" +
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GetSwizzle(meta->element) + "))";
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}
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return "0";
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}
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@ -1571,6 +1618,8 @@ private:
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ShaderWriter code;
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};
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} // Anonymous namespace
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std::string GetCommonDeclarations() {
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const auto cbuf = std::to_string(MAX_CONSTBUFFER_ELEMENTS);
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const auto gmem = std::to_string(MAX_GLOBALMEMORY_ELEMENTS);
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@ -7,7 +7,9 @@
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#include <fmt/format.h>
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#include "common/assert.h"
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#include "common/bit_field.h"
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#include "common/common_types.h"
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#include "common/logging/log.h"
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#include "video_core/engines/shader_bytecode.h"
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#include "video_core/shader/shader_ir.h"
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@ -41,19 +43,18 @@ u32 ShaderIR::DecodeTexture(NodeBlock& bb, u32 pc) {
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switch (opcode->get().GetId()) {
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case OpCode::Id::TEX: {
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UNIMPLEMENTED_IF_MSG(instr.tex.UsesMiscMode(TextureMiscMode::AOFFI),
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"AOFFI is not implemented");
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if (instr.tex.UsesMiscMode(TextureMiscMode::NODEP)) {
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LOG_WARNING(HW_GPU, "TEX.NODEP implementation is incomplete");
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}
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const TextureType texture_type{instr.tex.texture_type};
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const bool is_array = instr.tex.array != 0;
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const bool is_aoffi = instr.tex.UsesMiscMode(TextureMiscMode::AOFFI);
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const bool depth_compare = instr.tex.UsesMiscMode(TextureMiscMode::DC);
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const auto process_mode = instr.tex.GetTextureProcessMode();
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WriteTexInstructionFloat(
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bb, instr, GetTexCode(instr, texture_type, process_mode, depth_compare, is_array));
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bb, instr,
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GetTexCode(instr, texture_type, process_mode, depth_compare, is_array, is_aoffi));
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break;
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}
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case OpCode::Id::TEXS: {
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@ -78,8 +79,6 @@ u32 ShaderIR::DecodeTexture(NodeBlock& bb, u32 pc) {
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}
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case OpCode::Id::TLD4: {
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ASSERT(instr.tld4.array == 0);
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UNIMPLEMENTED_IF_MSG(instr.tld4.UsesMiscMode(TextureMiscMode::AOFFI),
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"AOFFI is not implemented");
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UNIMPLEMENTED_IF_MSG(instr.tld4.UsesMiscMode(TextureMiscMode::NDV),
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"NDV is not implemented");
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UNIMPLEMENTED_IF_MSG(instr.tld4.UsesMiscMode(TextureMiscMode::PTP),
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@ -92,8 +91,9 @@ u32 ShaderIR::DecodeTexture(NodeBlock& bb, u32 pc) {
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const auto texture_type = instr.tld4.texture_type.Value();
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const bool depth_compare = instr.tld4.UsesMiscMode(TextureMiscMode::DC);
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const bool is_array = instr.tld4.array != 0;
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WriteTexInstructionFloat(bb, instr,
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GetTld4Code(instr, texture_type, depth_compare, is_array));
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const bool is_aoffi = instr.tld4.UsesMiscMode(TextureMiscMode::AOFFI);
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WriteTexInstructionFloat(
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bb, instr, GetTld4Code(instr, texture_type, depth_compare, is_array, is_aoffi));
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break;
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}
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case OpCode::Id::TLD4S: {
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@ -127,7 +127,7 @@ u32 ShaderIR::DecodeTexture(NodeBlock& bb, u32 pc) {
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Node4 values;
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for (u32 element = 0; element < values.size(); ++element) {
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auto coords_copy = coords;
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MetaTexture meta{sampler, {}, {}, {}, {}, component, element};
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MetaTexture meta{sampler, {}, {}, {}, {}, {}, component, element};
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values[element] = Operation(OperationCode::TextureGather, meta, std::move(coords_copy));
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}
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@ -152,7 +152,7 @@ u32 ShaderIR::DecodeTexture(NodeBlock& bb, u32 pc) {
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if (!instr.txq.IsComponentEnabled(element)) {
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continue;
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}
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MetaTexture meta{sampler, {}, {}, {}, {}, {}, element};
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MetaTexture meta{sampler, {}, {}, {}, {}, {}, {}, element};
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const Node value =
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Operation(OperationCode::TextureQueryDimensions, meta, GetRegister(instr.gpr8));
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SetTemporal(bb, indexer++, value);
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@ -202,7 +202,7 @@ u32 ShaderIR::DecodeTexture(NodeBlock& bb, u32 pc) {
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for (u32 element = 0; element < 2; ++element) {
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auto params = coords;
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MetaTexture meta{sampler, {}, {}, {}, {}, {}, element};
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MetaTexture meta{sampler, {}, {}, {}, {}, {}, {}, element};
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const Node value = Operation(OperationCode::TextureQueryLod, meta, std::move(params));
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SetTemporal(bb, element, value);
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}
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@ -325,7 +325,8 @@ void ShaderIR::WriteTexsInstructionHalfFloat(NodeBlock& bb, Instruction instr,
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Node4 ShaderIR::GetTextureCode(Instruction instr, TextureType texture_type,
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TextureProcessMode process_mode, std::vector<Node> coords,
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Node array, Node depth_compare, u32 bias_offset) {
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Node array, Node depth_compare, u32 bias_offset,
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std::vector<Node> aoffi) {
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const bool is_array = array;
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const bool is_shadow = depth_compare;
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@ -374,7 +375,7 @@ Node4 ShaderIR::GetTextureCode(Instruction instr, TextureType texture_type,
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Node4 values;
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for (u32 element = 0; element < values.size(); ++element) {
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auto copy_coords = coords;
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MetaTexture meta{sampler, array, depth_compare, bias, lod, {}, element};
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MetaTexture meta{sampler, array, depth_compare, aoffi, bias, lod, {}, element};
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values[element] = Operation(read_method, meta, std::move(copy_coords));
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}
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@ -382,9 +383,15 @@ Node4 ShaderIR::GetTextureCode(Instruction instr, TextureType texture_type,
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}
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Node4 ShaderIR::GetTexCode(Instruction instr, TextureType texture_type,
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TextureProcessMode process_mode, bool depth_compare, bool is_array) {
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const bool lod_bias_enabled =
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(process_mode != TextureProcessMode::None && process_mode != TextureProcessMode::LZ);
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TextureProcessMode process_mode, bool depth_compare, bool is_array,
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bool is_aoffi) {
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const bool lod_bias_enabled{
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(process_mode != TextureProcessMode::None && process_mode != TextureProcessMode::LZ)};
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u64 parameter_register = instr.gpr20.Value();
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if (lod_bias_enabled) {
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++parameter_register;
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}
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const auto [coord_count, total_coord_count] = ValidateAndGetCoordinateElement(
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texture_type, depth_compare, is_array, lod_bias_enabled, 4, 5);
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@ -404,15 +411,19 @@ Node4 ShaderIR::GetTexCode(Instruction instr, TextureType texture_type,
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const Node array = is_array ? GetRegister(array_register) : nullptr;
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std::vector<Node> aoffi;
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if (is_aoffi) {
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aoffi = GetAoffiCoordinates(GetRegister(parameter_register++), coord_count, false);
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}
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Node dc{};
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if (depth_compare) {
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// Depth is always stored in the register signaled by gpr20 or in the next register if lod
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// or bias are used
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const u64 depth_register = instr.gpr20.Value() + (lod_bias_enabled ? 1 : 0);
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dc = GetRegister(depth_register);
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dc = GetRegister(parameter_register++);
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}
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return GetTextureCode(instr, texture_type, process_mode, coords, array, dc, 0);
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return GetTextureCode(instr, texture_type, process_mode, coords, array, dc, 0, aoffi);
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}
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Node4 ShaderIR::GetTexsCode(Instruction instr, TextureType texture_type,
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@ -448,11 +459,11 @@ Node4 ShaderIR::GetTexsCode(Instruction instr, TextureType texture_type,
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dc = GetRegister(depth_register);
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}
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return GetTextureCode(instr, texture_type, process_mode, coords, array, dc, bias_offset);
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return GetTextureCode(instr, texture_type, process_mode, coords, array, dc, bias_offset, {});
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}
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Node4 ShaderIR::GetTld4Code(Instruction instr, TextureType texture_type, bool depth_compare,
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bool is_array) {
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bool is_array, bool is_aoffi) {
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const std::size_t coord_count = GetCoordCount(texture_type);
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const std::size_t total_coord_count = coord_count + (is_array ? 1 : 0);
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const std::size_t total_reg_count = total_coord_count + (depth_compare ? 1 : 0);
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@ -463,15 +474,27 @@ Node4 ShaderIR::GetTld4Code(Instruction instr, TextureType texture_type, bool de
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const u64 coord_register = array_register + (is_array ? 1 : 0);
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||||
std::vector<Node> coords;
|
||||
for (size_t i = 0; i < coord_count; ++i)
|
||||
for (std::size_t i = 0; i < coord_count; ++i) {
|
||||
coords.push_back(GetRegister(coord_register + i));
|
||||
}
|
||||
|
||||
u64 parameter_register = instr.gpr20.Value();
|
||||
std::vector<Node> aoffi;
|
||||
if (is_aoffi) {
|
||||
aoffi = GetAoffiCoordinates(GetRegister(parameter_register++), coord_count, true);
|
||||
}
|
||||
|
||||
Node dc{};
|
||||
if (depth_compare) {
|
||||
dc = GetRegister(parameter_register++);
|
||||
}
|
||||
|
||||
const auto& sampler = GetSampler(instr.sampler, texture_type, is_array, depth_compare);
|
||||
|
||||
Node4 values;
|
||||
for (u32 element = 0; element < values.size(); ++element) {
|
||||
auto coords_copy = coords;
|
||||
MetaTexture meta{sampler, GetRegister(array_register), {}, {}, {}, {}, element};
|
||||
MetaTexture meta{sampler, GetRegister(array_register), dc, aoffi, {}, {}, {}, element};
|
||||
values[element] = Operation(OperationCode::TextureGather, meta, std::move(coords_copy));
|
||||
}
|
||||
|
||||
|
|
@ -507,7 +530,7 @@ Node4 ShaderIR::GetTldsCode(Instruction instr, TextureType texture_type, bool is
|
|||
Node4 values;
|
||||
for (u32 element = 0; element < values.size(); ++element) {
|
||||
auto coords_copy = coords;
|
||||
MetaTexture meta{sampler, array, {}, {}, lod, {}, element};
|
||||
MetaTexture meta{sampler, array, {}, {}, {}, lod, {}, element};
|
||||
values[element] = Operation(OperationCode::TexelFetch, meta, std::move(coords_copy));
|
||||
}
|
||||
return values;
|
||||
|
|
@ -531,4 +554,45 @@ std::tuple<std::size_t, std::size_t> ShaderIR::ValidateAndGetCoordinateElement(
|
|||
return {coord_count, total_coord_count};
|
||||
}
|
||||
|
||||
std::vector<Node> ShaderIR::GetAoffiCoordinates(Node aoffi_reg, std::size_t coord_count,
|
||||
bool is_tld4) {
|
||||
const auto [coord_offsets, size, wrap_value,
|
||||
diff_value] = [is_tld4]() -> std::tuple<std::array<u32, 3>, u32, s32, s32> {
|
||||
if (is_tld4) {
|
||||
return {{0, 8, 16}, 6, 32, 64};
|
||||
} else {
|
||||
return {{0, 4, 8}, 4, 8, 16};
|
||||
}
|
||||
}();
|
||||
const u32 mask = (1U << size) - 1;
|
||||
|
||||
std::vector<Node> aoffi;
|
||||
aoffi.reserve(coord_count);
|
||||
|
||||
const auto aoffi_immediate{
|
||||
TrackImmediate(aoffi_reg, global_code, static_cast<s64>(global_code.size()))};
|
||||
if (!aoffi_immediate) {
|
||||
// Variable access, not supported on AMD.
|
||||
LOG_WARNING(HW_GPU,
|
||||
"AOFFI constant folding failed, some hardware might have graphical issues");
|
||||
for (std::size_t coord = 0; coord < coord_count; ++coord) {
|
||||
const Node value = BitfieldExtract(aoffi_reg, coord_offsets.at(coord), size);
|
||||
const Node condition =
|
||||
Operation(OperationCode::LogicalIGreaterEqual, value, Immediate(wrap_value));
|
||||
const Node negative = Operation(OperationCode::IAdd, value, Immediate(-diff_value));
|
||||
aoffi.push_back(Operation(OperationCode::Select, condition, negative, value));
|
||||
}
|
||||
return aoffi;
|
||||
}
|
||||
|
||||
for (std::size_t coord = 0; coord < coord_count; ++coord) {
|
||||
s32 value = (*aoffi_immediate >> coord_offsets.at(coord)) & mask;
|
||||
if (value >= wrap_value) {
|
||||
value -= diff_value;
|
||||
}
|
||||
aoffi.push_back(Immediate(value));
|
||||
}
|
||||
return aoffi;
|
||||
}
|
||||
|
||||
} // namespace VideoCommon::Shader
|
||||
|
|
@ -7,6 +7,7 @@
|
|||
#include <array>
|
||||
#include <cstring>
|
||||
#include <map>
|
||||
#include <optional>
|
||||
#include <set>
|
||||
#include <string>
|
||||
#include <tuple>
|
||||
|
|
@ -290,6 +291,7 @@ struct MetaTexture {
|
|||
const Sampler& sampler;
|
||||
Node array{};
|
||||
Node depth_compare{};
|
||||
std::vector<Node> aoffi;
|
||||
Node bias{};
|
||||
Node lod{};
|
||||
Node component{};
|
||||
|
|
@ -741,14 +743,14 @@ private:
|
|||
|
||||
Node4 GetTexCode(Tegra::Shader::Instruction instr, Tegra::Shader::TextureType texture_type,
|
||||
Tegra::Shader::TextureProcessMode process_mode, bool depth_compare,
|
||||
bool is_array);
|
||||
bool is_array, bool is_aoffi);
|
||||
|
||||
Node4 GetTexsCode(Tegra::Shader::Instruction instr, Tegra::Shader::TextureType texture_type,
|
||||
Tegra::Shader::TextureProcessMode process_mode, bool depth_compare,
|
||||
bool is_array);
|
||||
|
||||
Node4 GetTld4Code(Tegra::Shader::Instruction instr, Tegra::Shader::TextureType texture_type,
|
||||
bool depth_compare, bool is_array);
|
||||
bool depth_compare, bool is_array, bool is_aoffi);
|
||||
|
||||
Node4 GetTldsCode(Tegra::Shader::Instruction instr, Tegra::Shader::TextureType texture_type,
|
||||
bool is_array);
|
||||
|
|
@ -757,9 +759,11 @@ private:
|
|||
Tegra::Shader::TextureType texture_type, bool depth_compare, bool is_array,
|
||||
bool lod_bias_enabled, std::size_t max_coords, std::size_t max_inputs);
|
||||
|
||||
std::vector<Node> GetAoffiCoordinates(Node aoffi_reg, std::size_t coord_count, bool is_tld4);
|
||||
|
||||
Node4 GetTextureCode(Tegra::Shader::Instruction instr, Tegra::Shader::TextureType texture_type,
|
||||
Tegra::Shader::TextureProcessMode process_mode, std::vector<Node> coords,
|
||||
Node array, Node depth_compare, u32 bias_offset);
|
||||
Node array, Node depth_compare, u32 bias_offset, std::vector<Node> aoffi);
|
||||
|
||||
Node GetVideoOperand(Node op, bool is_chunk, bool is_signed, Tegra::Shader::VideoType type,
|
||||
u64 byte_height);
|
||||
|
|
@ -773,6 +777,8 @@ private:
|
|||
|
||||
Node TrackCbuf(Node tracked, const NodeBlock& code, s64 cursor);
|
||||
|
||||
std::optional<u32> TrackImmediate(Node tracked, const NodeBlock& code, s64 cursor);
|
||||
|
||||
std::pair<Node, s64> TrackRegister(const GprNode* tracked, const NodeBlock& code, s64 cursor);
|
||||
|
||||
template <typename... T>
|
||||
|
|
|
|||
|
|
@ -6,6 +6,7 @@
|
|||
#include <utility>
|
||||
#include <variant>
|
||||
|
||||
#include "common/common_types.h"
|
||||
#include "video_core/shader/shader_ir.h"
|
||||
|
||||
namespace VideoCommon::Shader {
|
||||
|
|
@ -14,7 +15,7 @@ namespace {
|
|||
std::pair<Node, s64> FindOperation(const NodeBlock& code, s64 cursor,
|
||||
OperationCode operation_code) {
|
||||
for (; cursor >= 0; --cursor) {
|
||||
const Node node = code[cursor];
|
||||
const Node node = code.at(cursor);
|
||||
if (const auto operation = std::get_if<OperationNode>(node)) {
|
||||
if (operation->GetCode() == operation_code)
|
||||
return {node, cursor};
|
||||
|
|
@ -64,6 +65,20 @@ Node ShaderIR::TrackCbuf(Node tracked, const NodeBlock& code, s64 cursor) {
|
|||
return nullptr;
|
||||
}
|
||||
|
||||
std::optional<u32> ShaderIR::TrackImmediate(Node tracked, const NodeBlock& code, s64 cursor) {
|
||||
// Reduce the cursor in one to avoid infinite loops when the instruction sets the same register
|
||||
// that it uses as operand
|
||||
const auto [found, found_cursor] =
|
||||
TrackRegister(&std::get<GprNode>(*tracked), code, cursor - 1);
|
||||
if (!found) {
|
||||
return {};
|
||||
}
|
||||
if (const auto immediate = std::get_if<ImmediateNode>(found)) {
|
||||
return immediate->GetValue();
|
||||
}
|
||||
return {};
|
||||
}
|
||||
|
||||
std::pair<Node, s64> ShaderIR::TrackRegister(const GprNode* tracked, const NodeBlock& code,
|
||||
s64 cursor) {
|
||||
for (; cursor >= 0; --cursor) {
|
||||
|
|
|
|||
Loading…
Reference in a new issue