diff options
Diffstat (limited to 'src/video_core/renderer_opengl/gl_shader_decompiler.cpp')
| -rw-r--r-- | src/video_core/renderer_opengl/gl_shader_decompiler.cpp | 169 |
1 files changed, 112 insertions, 57 deletions
diff --git a/src/video_core/renderer_opengl/gl_shader_decompiler.cpp b/src/video_core/renderer_opengl/gl_shader_decompiler.cpp index 11d1169f0..3ea08ef7b 100644 --- a/src/video_core/renderer_opengl/gl_shader_decompiler.cpp +++ b/src/video_core/renderer_opengl/gl_shader_decompiler.cpp @@ -21,6 +21,8 @@ namespace OpenGL::GLShader { +namespace { + using Tegra::Shader::Attribute; using Tegra::Shader::AttributeUse; using Tegra::Shader::Header; @@ -34,14 +36,18 @@ using Maxwell = Tegra::Engines::Maxwell3D::Regs; using ShaderStage = Tegra::Engines::Maxwell3D::Regs::ShaderStage; using Operation = const OperationNode&; +enum class Type { Bool, Bool2, Float, Int, Uint, HalfFloat }; + +struct TextureAoffi {}; +using TextureArgument = std::pair<Type, Node>; +using TextureIR = std::variant<TextureAoffi, TextureArgument>; + enum : u32 { POSITION_VARYING_LOCATION = 0, GENERIC_VARYING_START_LOCATION = 1 }; constexpr u32 MAX_CONSTBUFFER_ELEMENTS = static_cast<u32>(RasterizerOpenGL::MaxConstbufferSize) / (4 * sizeof(float)); constexpr u32 MAX_GLOBALMEMORY_ELEMENTS = static_cast<u32>(RasterizerOpenGL::MaxGlobalMemorySize) / sizeof(float); -enum class Type { Bool, Bool2, Float, Int, Uint, HalfFloat }; - class ShaderWriter { public: void AddExpression(std::string_view text) { @@ -69,10 +75,10 @@ public: shader_source += '\n'; } - std::string GenerateTemporal() { - std::string temporal = "tmp"; - temporal += std::to_string(temporal_index++); - return temporal; + std::string GenerateTemporary() { + std::string temporary = "tmp"; + temporary += std::to_string(temporary_index++); + return temporary; } std::string GetResult() { @@ -87,11 +93,11 @@ private: } std::string shader_source; - u32 temporal_index = 1; + u32 temporary_index = 1; }; /// Generates code to use for a swizzle operation. -static std::string GetSwizzle(u32 elem) { +std::string GetSwizzle(u32 elem) { ASSERT(elem <= 3); std::string swizzle = "."; swizzle += "xyzw"[elem]; @@ -99,7 +105,7 @@ static std::string GetSwizzle(u32 elem) { } /// Translate topology -static std::string GetTopologyName(Tegra::Shader::OutputTopology topology) { +std::string GetTopologyName(Tegra::Shader::OutputTopology topology) { switch (topology) { case Tegra::Shader::OutputTopology::PointList: return "points"; @@ -114,7 +120,7 @@ static std::string GetTopologyName(Tegra::Shader::OutputTopology topology) { } /// Returns true if an object has to be treated as precise -static bool IsPrecise(Operation operand) { +bool IsPrecise(Operation operand) { const auto& meta = operand.GetMeta(); if (const auto arithmetic = std::get_if<MetaArithmetic>(&meta)) { @@ -126,7 +132,7 @@ static bool IsPrecise(Operation operand) { return false; } -static bool IsPrecise(Node node) { +bool IsPrecise(Node node) { if (const auto operation = std::get_if<OperationNode>(node)) { return IsPrecise(*operation); } @@ -426,9 +432,14 @@ private: std::string Visit(Node node) { if (const auto operation = std::get_if<OperationNode>(node)) { const auto operation_index = static_cast<std::size_t>(operation->GetCode()); + if (operation_index >= operation_decompilers.size()) { + UNREACHABLE_MSG("Out of bounds operation: {}", operation_index); + return {}; + } const auto decompiler = operation_decompilers[operation_index]; if (decompiler == nullptr) { - UNREACHABLE_MSG("Operation decompiler {} not defined", operation_index); + UNREACHABLE_MSG("Undefined operation: {}", operation_index); + return {}; } return (this->*decompiler)(*operation); @@ -540,7 +551,7 @@ private: } else if (std::holds_alternative<OperationNode>(*offset)) { // Indirect access - const std::string final_offset = code.GenerateTemporal(); + const std::string final_offset = code.GenerateTemporary(); code.AddLine("uint " + final_offset + " = (ftou(" + Visit(offset) + ") / 4) & " + std::to_string(MAX_CONSTBUFFER_ELEMENTS - 1) + ';'); return fmt::format("{}[{} / 4][{} % 4]", GetConstBuffer(cbuf->GetIndex()), @@ -587,9 +598,9 @@ private: // There's a bug in NVidia's proprietary drivers that makes precise fail on fragment shaders const std::string precise = stage != ShaderStage::Fragment ? "precise " : ""; - const std::string temporal = code.GenerateTemporal(); - code.AddLine(precise + "float " + temporal + " = " + value + ';'); - return temporal; + const std::string temporary = code.GenerateTemporary(); + code.AddLine(precise + "float " + temporary + " = " + value + ';'); + return temporary; } std::string VisitOperand(Operation operation, std::size_t operand_index) { @@ -601,9 +612,9 @@ private: return Visit(operand); } - const std::string temporal = code.GenerateTemporal(); - code.AddLine("float " + temporal + " = " + Visit(operand) + ';'); - return temporal; + const std::string temporary = code.GenerateTemporary(); + code.AddLine("float " + temporary + " = " + Visit(operand) + ';'); + return temporary; } std::string VisitOperand(Operation operation, std::size_t operand_index, Type type) { @@ -718,8 +729,8 @@ private: result_type)); } - std::string GenerateTexture(Operation operation, const std::string& func, - const std::vector<std::pair<Type, Node>>& extras) { + std::string GenerateTexture(Operation operation, const std::string& function_suffix, + const std::vector<TextureIR>& extras) { constexpr std::array<const char*, 4> coord_constructors = {"float", "vec2", "vec3", "vec4"}; const auto meta = std::get_if<MetaTexture>(&operation.GetMeta()); @@ -729,11 +740,11 @@ private: const bool has_array = meta->sampler.IsArray(); const bool has_shadow = meta->sampler.IsShadow(); - std::string expr = func; - expr += '('; - expr += GetSampler(meta->sampler); - expr += ", "; - + std::string expr = "texture" + function_suffix; + if (!meta->aoffi.empty()) { + expr += "Offset"; + } + expr += '(' + GetSampler(meta->sampler) + ", "; expr += coord_constructors.at(count + (has_array ? 1 : 0) + (has_shadow ? 1 : 0) - 1); expr += '('; for (std::size_t i = 0; i < count; ++i) { @@ -751,36 +762,74 @@ private: } expr += ')'; - for (const auto& extra_pair : extras) { - const auto [type, operand] = extra_pair; - if (operand == nullptr) { - continue; + for (const auto& variant : extras) { + if (const auto argument = std::get_if<TextureArgument>(&variant)) { + expr += GenerateTextureArgument(*argument); + } else if (std::get_if<TextureAoffi>(&variant)) { + expr += GenerateTextureAoffi(meta->aoffi); + } else { + UNREACHABLE(); } - expr += ", "; + } - switch (type) { - case Type::Int: - if (const auto immediate = std::get_if<ImmediateNode>(operand)) { - // Inline the string as an immediate integer in GLSL (some extra arguments are - // required to be constant) - expr += std::to_string(static_cast<s32>(immediate->GetValue())); - } else { - expr += "ftoi(" + Visit(operand) + ')'; - } - break; - case Type::Float: - expr += Visit(operand); - break; - default: { - const auto type_int = static_cast<u32>(type); - UNIMPLEMENTED_MSG("Unimplemented extra type={}", type_int); - expr += '0'; - break; + return expr + ')'; + } + + std::string GenerateTextureArgument(TextureArgument argument) { + const auto [type, operand] = argument; + if (operand == nullptr) { + return {}; + } + + std::string expr = ", "; + switch (type) { + case Type::Int: + if (const auto immediate = std::get_if<ImmediateNode>(operand)) { + // Inline the string as an immediate integer in GLSL (some extra arguments are + // required to be constant) + expr += std::to_string(static_cast<s32>(immediate->GetValue())); + } else { + expr += "ftoi(" + Visit(operand) + ')'; } + break; + case Type::Float: + expr += Visit(operand); + break; + default: { + const auto type_int = static_cast<u32>(type); + UNIMPLEMENTED_MSG("Unimplemented extra type={}", type_int); + expr += '0'; + break; + } + } + return expr; + } + + std::string GenerateTextureAoffi(const std::vector<Node>& aoffi) { + if (aoffi.empty()) { + return {}; + } + constexpr std::array<const char*, 3> coord_constructors = {"int", "ivec2", "ivec3"}; + std::string expr = ", "; + expr += coord_constructors.at(aoffi.size() - 1); + expr += '('; + + for (std::size_t index = 0; index < aoffi.size(); ++index) { + const auto operand{aoffi.at(index)}; + if (const auto immediate = std::get_if<ImmediateNode>(operand)) { + // Inline the string as an immediate integer in GLSL (AOFFI arguments are required + // to be constant by the standard). + expr += std::to_string(static_cast<s32>(immediate->GetValue())); + } else { + expr += "ftoi(" + Visit(operand) + ')'; + } + if (index + 1 < aoffi.size()) { + expr += ", "; } } + expr += ')'; - return expr + ')'; + return expr; } std::string Assign(Operation operation) { @@ -1159,7 +1208,8 @@ private: const auto meta = std::get_if<MetaTexture>(&operation.GetMeta()); ASSERT(meta); - std::string expr = GenerateTexture(operation, "texture", {{Type::Float, meta->bias}}); + std::string expr = GenerateTexture( + operation, "", {TextureAoffi{}, TextureArgument{Type::Float, meta->bias}}); if (meta->sampler.IsShadow()) { expr = "vec4(" + expr + ')'; } @@ -1170,7 +1220,8 @@ private: const auto meta = std::get_if<MetaTexture>(&operation.GetMeta()); ASSERT(meta); - std::string expr = GenerateTexture(operation, "textureLod", {{Type::Float, meta->lod}}); + std::string expr = GenerateTexture( + operation, "Lod", {TextureArgument{Type::Float, meta->lod}, TextureAoffi{}}); if (meta->sampler.IsShadow()) { expr = "vec4(" + expr + ')'; } @@ -1182,7 +1233,8 @@ private: ASSERT(meta); const auto type = meta->sampler.IsShadow() ? Type::Float : Type::Int; - return GenerateTexture(operation, "textureGather", {{type, meta->component}}) + + return GenerateTexture(operation, "Gather", + {TextureArgument{type, meta->component}, TextureAoffi{}}) + GetSwizzle(meta->element); } @@ -1196,11 +1248,12 @@ private: switch (meta->element) { case 0: case 1: - return "textureSize(" + sampler + ", " + lod + ')' + GetSwizzle(meta->element); + return "itof(int(textureSize(" + sampler + ", " + lod + ')' + + GetSwizzle(meta->element) + "))"; case 2: return "0"; case 3: - return "textureQueryLevels(" + sampler + ')'; + return "itof(textureQueryLevels(" + sampler + "))"; } UNREACHABLE(); return "0"; @@ -1211,8 +1264,8 @@ private: ASSERT(meta); if (meta->element < 2) { - return "itof(int((" + GenerateTexture(operation, "textureQueryLod", {}) + - " * vec2(256))" + GetSwizzle(meta->element) + "))"; + return "itof(int((" + GenerateTexture(operation, "QueryLod", {}) + " * vec2(256))" + + GetSwizzle(meta->element) + "))"; } return "0"; } @@ -1565,6 +1618,8 @@ private: ShaderWriter code; }; +} // Anonymous namespace + std::string GetCommonDeclarations() { const auto cbuf = std::to_string(MAX_CONSTBUFFER_ELEMENTS); const auto gmem = std::to_string(MAX_GLOBALMEMORY_ELEMENTS); |