From a63a0daa5e773574019ec521c0a07096efbdcd36 Mon Sep 17 00:00:00 2001
From: ReinUsesLisp <reinuseslisp@airmail.cc>
Date: Wed, 3 Jun 2020 18:07:35 -0300
Subject: gl_arb_decompiler: Implement an assembly shader decompiler
Emit code compatible with NV_gpu_program5.
This should emit code compatible with Fermi, but it wasn't tested on
that architecture. Pascal has some issues not present on Turing GPUs.
---
CMakeModules/GenerateSCMRev.cmake | 2 +
src/common/CMakeLists.txt | 2 +
src/video_core/CMakeLists.txt | 2 +
.../renderer_opengl/gl_arb_decompiler.cpp | 2051 ++++++++++++++++++++
src/video_core/renderer_opengl/gl_arb_decompiler.h | 29 +
src/video_core/renderer_opengl/gl_device.cpp | 1 +
src/video_core/renderer_opengl/gl_device.h | 5 +
src/video_core/renderer_opengl/gl_shader_cache.cpp | 4 +-
8 files changed, 2095 insertions(+), 1 deletion(-)
create mode 100644 src/video_core/renderer_opengl/gl_arb_decompiler.cpp
create mode 100644 src/video_core/renderer_opengl/gl_arb_decompiler.h
diff --git a/CMakeModules/GenerateSCMRev.cmake b/CMakeModules/GenerateSCMRev.cmake
index 83e4e9df2e..311ba1c2e2 100644
--- a/CMakeModules/GenerateSCMRev.cmake
+++ b/CMakeModules/GenerateSCMRev.cmake
@@ -51,6 +51,8 @@ endif()
# The variable SRC_DIR must be passed into the script (since it uses the current build directory for all values of CMAKE_*_DIR)
set(VIDEO_CORE "${SRC_DIR}/src/video_core")
set(HASH_FILES
+ "${VIDEO_CORE}/renderer_opengl/gl_arb_decompiler.cpp"
+ "${VIDEO_CORE}/renderer_opengl/gl_arb_decompiler.h"
"${VIDEO_CORE}/renderer_opengl/gl_shader_cache.cpp"
"${VIDEO_CORE}/renderer_opengl/gl_shader_cache.h"
"${VIDEO_CORE}/renderer_opengl/gl_shader_decompiler.cpp"
diff --git a/src/common/CMakeLists.txt b/src/common/CMakeLists.txt
index 24b7a083c1..0a3e2f4d19 100644
--- a/src/common/CMakeLists.txt
+++ b/src/common/CMakeLists.txt
@@ -32,6 +32,8 @@ add_custom_command(OUTPUT scm_rev.cpp
DEPENDS
# WARNING! It was too much work to try and make a common location for this list,
# so if you need to change it, please update CMakeModules/GenerateSCMRev.cmake as well
+ "${VIDEO_CORE}/renderer_opengl/gl_arb_decompiler.cpp"
+ "${VIDEO_CORE}/renderer_opengl/gl_arb_decompiler.h"
"${VIDEO_CORE}/renderer_opengl/gl_shader_cache.cpp"
"${VIDEO_CORE}/renderer_opengl/gl_shader_cache.h"
"${VIDEO_CORE}/renderer_opengl/gl_shader_decompiler.cpp"
diff --git a/src/video_core/CMakeLists.txt b/src/video_core/CMakeLists.txt
index 2bf8d68ce0..2af713af28 100644
--- a/src/video_core/CMakeLists.txt
+++ b/src/video_core/CMakeLists.txt
@@ -54,6 +54,8 @@ add_library(video_core STATIC
rasterizer_interface.h
renderer_base.cpp
renderer_base.h
+ renderer_opengl/gl_arb_decompiler.cpp
+ renderer_opengl/gl_arb_decompiler.h
renderer_opengl/gl_buffer_cache.cpp
renderer_opengl/gl_buffer_cache.h
renderer_opengl/gl_device.cpp
diff --git a/src/video_core/renderer_opengl/gl_arb_decompiler.cpp b/src/video_core/renderer_opengl/gl_arb_decompiler.cpp
new file mode 100644
index 0000000000..6a23221bbd
--- /dev/null
+++ b/src/video_core/renderer_opengl/gl_arb_decompiler.cpp
@@ -0,0 +1,2051 @@
+// Copyright 2020 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <algorithm>
+#include <array>
+#include <cstddef>
+#include <string>
+#include <string_view>
+#include <utility>
+#include <variant>
+
+#include <fmt/format.h>
+
+#include "common/alignment.h"
+#include "common/assert.h"
+#include "common/common_types.h"
+#include "video_core/renderer_opengl/gl_arb_decompiler.h"
+#include "video_core/renderer_opengl/gl_device.h"
+#include "video_core/shader/registry.h"
+#include "video_core/shader/shader_ir.h"
+
+// Predicates in the decompiled code follow the convention that -1 means true and 0 means false.
+// GLASM lacks booleans, so they have to be implemented as integers.
+// Using -1 for true is useful because both CMP.S and NOT.U can negate it, and CMP.S can be used to
+// select between two values, because -1 will be evaluated as true and 0 as false.
+
+namespace OpenGL {
+
+namespace {
+
+using Tegra::Engines::ShaderType;
+using Tegra::Shader::Attribute;
+using Tegra::Shader::PixelImap;
+using Tegra::Shader::Register;
+using namespace VideoCommon::Shader;
+using Operation = const OperationNode&;
+
+constexpr std::array INTERNAL_FLAG_NAMES = {"ZERO", "SIGN", "CARRY", "OVERFLOW"};
+
+char Swizzle(std::size_t component) {
+ ASSERT(component < 4);
+ return component["xyzw"];
+}
+
+constexpr bool IsGenericAttribute(Attribute::Index index) {
+ return index >= Attribute::Index::Attribute_0 && index <= Attribute::Index::Attribute_31;
+}
+
+u32 GetGenericAttributeIndex(Attribute::Index index) {
+ ASSERT(IsGenericAttribute(index));
+ return static_cast<u32>(index) - static_cast<u32>(Attribute::Index::Attribute_0);
+}
+
+std::string_view Modifiers(Operation operation) {
+ const auto meta = std::get_if<MetaArithmetic>(&operation.GetMeta());
+ if (meta && meta->precise) {
+ return ".PREC";
+ }
+ return "";
+}
+
+std::string_view GetInputFlags(PixelImap attribute) {
+ switch (attribute) {
+ case PixelImap::Perspective:
+ return "";
+ case PixelImap::Constant:
+ return "FLAT ";
+ case PixelImap::ScreenLinear:
+ return "NOPERSPECTIVE ";
+ case PixelImap::Unused:
+ break;
+ }
+ UNIMPLEMENTED_MSG("Unknown attribute usage index={}", static_cast<int>(attribute));
+ return {};
+}
+
+std::string_view ImageType(Tegra::Shader::ImageType image_type) {
+ switch (image_type) {
+ case Tegra::Shader::ImageType::Texture1D:
+ return "1D";
+ case Tegra::Shader::ImageType::TextureBuffer:
+ return "BUFFER";
+ case Tegra::Shader::ImageType::Texture1DArray:
+ return "ARRAY1D";
+ case Tegra::Shader::ImageType::Texture2D:
+ return "2D";
+ case Tegra::Shader::ImageType::Texture2DArray:
+ return "ARRAY2D";
+ case Tegra::Shader::ImageType::Texture3D:
+ return "3D";
+ }
+ UNREACHABLE();
+ return {};
+}
+
+std::string_view StackName(MetaStackClass stack) {
+ switch (stack) {
+ case MetaStackClass::Ssy:
+ return "SSY";
+ case MetaStackClass::Pbk:
+ return "PBK";
+ }
+ UNREACHABLE();
+ return "";
+};
+
+std::string_view PrimitiveDescription(Tegra::Engines::Maxwell3D::Regs::PrimitiveTopology topology) {
+ switch (topology) {
+ case Tegra::Engines::Maxwell3D::Regs::PrimitiveTopology::Points:
+ return "POINTS";
+ case Tegra::Engines::Maxwell3D::Regs::PrimitiveTopology::Lines:
+ case Tegra::Engines::Maxwell3D::Regs::PrimitiveTopology::LineStrip:
+ return "LINES";
+ case Tegra::Engines::Maxwell3D::Regs::PrimitiveTopology::LinesAdjacency:
+ case Tegra::Engines::Maxwell3D::Regs::PrimitiveTopology::LineStripAdjacency:
+ return "LINES_ADJACENCY";
+ case Tegra::Engines::Maxwell3D::Regs::PrimitiveTopology::Triangles:
+ case Tegra::Engines::Maxwell3D::Regs::PrimitiveTopology::TriangleStrip:
+ case Tegra::Engines::Maxwell3D::Regs::PrimitiveTopology::TriangleFan:
+ return "TRIANGLES";
+ case Tegra::Engines::Maxwell3D::Regs::PrimitiveTopology::TrianglesAdjacency:
+ case Tegra::Engines::Maxwell3D::Regs::PrimitiveTopology::TriangleStripAdjacency:
+ return "TRIANGLES_ADJACENCY";
+ default:
+ UNIMPLEMENTED_MSG("topology={}", static_cast<int>(topology));
+ return "POINTS";
+ }
+}
+
+std::string_view TopologyName(Tegra::Shader::OutputTopology topology) {
+ switch (topology) {
+ case Tegra::Shader::OutputTopology::PointList:
+ return "POINTS";
+ case Tegra::Shader::OutputTopology::LineStrip:
+ return "LINE_STRIP";
+ case Tegra::Shader::OutputTopology::TriangleStrip:
+ return "TRIANGLE_STRIP";
+ default:
+ UNIMPLEMENTED_MSG("Unknown output topology: {}", static_cast<u32>(topology));
+ return "points";
+ }
+}
+
+std::string_view StageInputName(ShaderType stage) {
+ switch (stage) {
+ case ShaderType::Vertex:
+ case ShaderType::Geometry:
+ return "vertex";
+ case ShaderType::Fragment:
+ return "fragment";
+ case ShaderType::Compute:
+ return "invocation";
+ default:
+ UNREACHABLE();
+ return "";
+ }
+}
+
+std::string TextureType(const MetaTexture& meta) {
+ if (meta.sampler.is_buffer) {
+ return "BUFFER";
+ }
+ std::string type;
+ if (meta.sampler.is_shadow) {
+ type += "SHADOW";
+ }
+ if (meta.sampler.is_array) {
+ type += "ARRAY";
+ }
+ type += [&meta] {
+ switch (meta.sampler.type) {
+ case Tegra::Shader::TextureType::Texture1D:
+ return "1D";
+ case Tegra::Shader::TextureType::Texture2D:
+ return "2D";
+ case Tegra::Shader::TextureType::Texture3D:
+ return "3D";
+ case Tegra::Shader::TextureType::TextureCube:
+ return "CUBE";
+ }
+ UNREACHABLE();
+ return "2D";
+ }();
+ return type;
+}
+
+std::string GlobalMemoryName(const GlobalMemoryBase& base) {
+ return fmt::format("gmem{}_{}", base.cbuf_index, base.cbuf_offset);
+}
+
+class ARBDecompiler final {
+public:
+ explicit ARBDecompiler(const Device& device, const ShaderIR& ir, const Registry& registry,
+ ShaderType stage, std::string_view identifier);
+
+ std::string Code() const {
+ return shader_source;
+ }
+
+private:
+ void DeclareHeader();
+ void DeclareVertex();
+ void DeclareGeometry();
+ void DeclareFragment();
+ void DeclareCompute();
+ void DeclareInputAttributes();
+ void DeclareOutputAttributes();
+ void DeclareLocalMemory();
+ void DeclareGlobalMemory();
+ void DeclareConstantBuffers();
+ void DeclareRegisters();
+ void DeclareTemporaries();
+ void DeclarePredicates();
+ void DeclareInternalFlags();
+
+ void InitializeVariables();
+
+ void DecompileAST();
+ void DecompileBranchMode();
+
+ void VisitAST(const ASTNode& node);
+ std::string VisitExpression(const Expr& node);
+
+ void VisitBlock(const NodeBlock& bb);
+
+ std::string Visit(const Node& node);
+
+ std::pair<std::string, std::size_t> BuildCoords(Operation);
+ std::string BuildAoffi(Operation);
+ void Exit();
+
+ std::string Assign(Operation);
+ std::string Select(Operation);
+ std::string FClamp(Operation);
+ std::string FCastHalf0(Operation);
+ std::string FCastHalf1(Operation);
+ std::string FSqrt(Operation);
+ std::string FSwizzleAdd(Operation);
+ std::string HAdd2(Operation);
+ std::string HMul2(Operation);
+ std::string HFma2(Operation);
+ std::string HAbsolute(Operation);
+ std::string HNegate(Operation);
+ std::string HClamp(Operation);
+ std::string HCastFloat(Operation);
+ std::string HUnpack(Operation);
+ std::string HMergeF32(Operation);
+ std::string HMergeH0(Operation);
+ std::string HMergeH1(Operation);
+ std::string HPack2(Operation);
+ std::string LogicalAssign(Operation);
+ std::string LogicalPick2(Operation);
+ std::string LogicalAnd2(Operation);
+ std::string FloatOrdered(Operation);
+ std::string FloatUnordered(Operation);
+ std::string LogicalAddCarry(Operation);
+ std::string Texture(Operation);
+ std::string TextureGather(Operation);
+ std::string TextureQueryDimensions(Operation);
+ std::string TextureQueryLod(Operation);
+ std::string TexelFetch(Operation);
+ std::string TextureGradient(Operation);
+ std::string ImageLoad(Operation);
+ std::string ImageStore(Operation);
+ std::string Branch(Operation);
+ std::string BranchIndirect(Operation);
+ std::string PushFlowStack(Operation);
+ std::string PopFlowStack(Operation);
+ std::string Exit(Operation);
+ std::string Discard(Operation);
+ std::string EmitVertex(Operation);
+ std::string EndPrimitive(Operation);
+ std::string InvocationId(Operation);
+ std::string YNegate(Operation);
+ std::string ThreadId(Operation);
+ std::string ShuffleIndexed(Operation);
+ std::string Barrier(Operation);
+ std::string MemoryBarrierGroup(Operation);
+ std::string MemoryBarrierGlobal(Operation);
+
+ template <const std::string_view& op>
+ std::string Unary(Operation operation) {
+ const std::string temporary = AllocTemporary();
+ AddLine("{}{} {}, {};", op, Modifiers(operation), temporary, Visit(operation[0]));
+ return temporary;
+ }
+
+ template <const std::string_view& op>
+ std::string Binary(Operation operation) {
+ const std::string temporary = AllocTemporary();
+ AddLine("{}{} {}, {}, {};", op, Modifiers(operation), temporary, Visit(operation[0]),
+ Visit(operation[1]));
+ return temporary;
+ }
+
+ template <const std::string_view& op>
+ std::string Trinary(Operation operation) {
+ const std::string temporary = AllocTemporary();
+ AddLine("{}{} {}, {}, {}, {};", op, Modifiers(operation), temporary, Visit(operation[0]),
+ Visit(operation[1]), Visit(operation[2]));
+ return temporary;
+ }
+
+ template <const std::string_view& op, bool unordered>
+ std::string FloatComparison(Operation operation) {
+ const std::string temporary = AllocTemporary();
+ AddLine("TRUNC.U.CC RC.x, {};", Binary<op>(operation));
+ AddLine("MOV.S {}, 0;", temporary);
+ AddLine("MOV.S {} (NE.x), -1;", temporary);
+
+ const std::string op_a = Visit(operation[0]);
+ const std::string op_b = Visit(operation[1]);
+ if constexpr (unordered) {
+ AddLine("SNE.F RC.x, {}, {};", op_a, op_a);
+ AddLine("TRUNC.U.CC RC.x, RC.x;");
+ AddLine("MOV.S {} (NE.x), -1;", temporary);
+ AddLine("SNE.F RC.x, {}, {};", op_b, op_b);
+ AddLine("TRUNC.U.CC RC.x, RC.x;");
+ AddLine("MOV.S {} (NE.x), -1;", temporary);
+ } else if (op == SNE_F) {
+ AddLine("SNE.F RC.x, {}, {};", op_a, op_a);
+ AddLine("TRUNC.U.CC RC.x, RC.x;");
+ AddLine("MOV.S {} (NE.x), 0;", temporary);
+ AddLine("SNE.F RC.x, {}, {};", op_b, op_b);
+ AddLine("TRUNC.U.CC RC.x, RC.x;");
+ AddLine("MOV.S {} (NE.x), 0;", temporary);
+ }
+ return temporary;
+ }
+
+ template <const std::string_view& op, bool is_nan>
+ std::string HalfComparison(Operation operation) {
+ const std::string tmp1 = AllocVectorTemporary();
+ const std::string tmp2 = AllocVectorTemporary();
+ const std::string op_a = Visit(operation[0]);
+ const std::string op_b = Visit(operation[1]);
+ AddLine("UP2H.F {}, {};", tmp1, op_a);
+ AddLine("UP2H.F {}, {};", tmp2, op_b);
+ AddLine("{} {}, {}, {};", op, tmp1, tmp1, tmp2);
+ AddLine("TRUNC.U.CC RC.xy, {};", tmp1);
+ AddLine("MOV.S {}.xy, {{0, 0, 0, 0}};", tmp1);
+ AddLine("MOV.S {}.x (NE.x), -1;", tmp1);
+ AddLine("MOV.S {}.y (NE.y), -1;", tmp1);
+ if constexpr (is_nan) {
+ AddLine("MOVC.F RC.x, {};", op_a);
+ AddLine("MOV.S {}.x (NAN.x), -1;", tmp1);
+ AddLine("MOVC.F RC.x, {};", op_b);
+ AddLine("MOV.S {}.y (NAN.x), -1;", tmp1);
+ }
+ return tmp1;
+ }
+
+ template <const std::string_view& op, const std::string_view& type>
+ std::string AtomicImage(Operation operation) {
+ const auto& meta = std::get<MetaImage>(operation.GetMeta());
+ const u32 image_id = device.GetBaseBindings(stage).image + meta.image.index;
+ const std::size_t num_coords = operation.GetOperandsCount();
+ const std::size_t num_values = meta.values.size();
+
+ const std::string coord = AllocVectorTemporary();
+ const std::string value = AllocVectorTemporary();
+ for (std::size_t i = 0; i < num_coords; ++i) {
+ AddLine("MOV.S {}.{}, {};", coord, Swizzle(i), Visit(operation[i]));
+ }
+ for (std::size_t i = 0; i < num_values; ++i) {
+ AddLine("MOV.F {}.{}, {};", value, Swizzle(i), Visit(meta.values[i]));
+ }
+
+ const std::string result = coord;
+ AddLine("ATOMIM.{}.{} {}.x, {}, {}, image[{}], {};", op, type, result, value, coord,
+ image_id, ImageType(meta.image.type));
+ return fmt::format("{}.x", result);
+ }
+
+ template <const std::string_view& op, const std::string_view& type>
+ std::string Atomic(Operation operation) {
+ const std::string temporary = AllocTemporary();
+ std::string address;
+ std::string_view opname;
+ if (const auto gmem = std::get_if<GmemNode>(&*operation[0])) {
+ AddLine("SUB.U {}, {}, {};", temporary, Visit(gmem->GetRealAddress()),
+ Visit(gmem->GetBaseAddress()));
+ address = fmt::format("{}[{}]", GlobalMemoryName(gmem->GetDescriptor()), temporary);
+ opname = "ATOMB";
+ } else if (const auto smem = std::get_if<SmemNode>(&*operation[0])) {
+ address = fmt::format("shared_mem[{}]", Visit(smem->GetAddress()));
+ opname = "ATOMS";
+ } else {
+ UNREACHABLE();
+ return "{0, 0, 0, 0}";
+ }
+ AddLine("{}.{}.{} {}, {}, {};", opname, op, type, temporary, Visit(operation[1]), address);
+ return temporary;
+ }
+
+ template <char type>
+ std::string Negate(Operation operation) {
+ const std::string temporary = AllocTemporary();
+ if constexpr (type == 'F') {
+ AddLine("MOV.F32 {}, -{};", temporary, Visit(operation[0]));
+ } else {
+ AddLine("MOV.{} {}, -{};", type, temporary, Visit(operation[0]));
+ }
+ return temporary;
+ }
+
+ template <char type>
+ std::string Absolute(Operation operation) {
+ const std::string temporary = AllocTemporary();
+ AddLine("MOV.{} {}, |{}|;", type, temporary, Visit(operation[0]));
+ return temporary;
+ }
+
+ template <char type>
+ std::string BitfieldInsert(Operation operation) {
+ const std::string temporary = AllocVectorTemporary();
+ AddLine("MOV.{} {}.x, {};", type, temporary, Visit(operation[3]));
+ AddLine("MOV.{} {}.y, {};", type, temporary, Visit(operation[2]));
+ AddLine("BFI.{} {}.x, {}, {}, {};", type, temporary, temporary, Visit(operation[1]),
+ Visit(operation[0]));
+ return fmt::format("{}.x", temporary);
+ }
+
+ template <char type>
+ std::string BitfieldExtract(Operation operation) {
+ const std::string temporary = AllocVectorTemporary();
+ AddLine("MOV.{} {}.x, {};", type, temporary, Visit(operation[2]));
+ AddLine("MOV.{} {}.y, {};", type, temporary, Visit(operation[1]));
+ AddLine("BFE.{} {}.x, {}, {};", type, temporary, temporary, Visit(operation[0]));
+ return fmt::format("{}.x", temporary);
+ }
+
+ template <char swizzle>
+ std::string LocalInvocationId(Operation) {
+ return fmt::format("invocation.localid.{}", swizzle);
+ }
+
+ template <char swizzle>
+ std::string WorkGroupId(Operation) {
+ return fmt::format("invocation.groupid.{}", swizzle);
+ }
+
+ template <char c1, char c2>
+ std::string ThreadMask(Operation) {
+ return fmt::format("{}.thread{}{}mask", StageInputName(stage), c1, c2);
+ }
+
+ template <typename... Args>
+ void AddExpression(std::string_view text, Args&&... args) {
+ shader_source += fmt::format(text, std::forward<Args>(args)...);
+ }
+
+ template <typename... Args>
+ void AddLine(std::string_view text, Args&&... args) {
+ AddExpression(text, std::forward<Args>(args)...);
+ shader_source += '\n';
+ }
+
+ std::string AllocTemporary() {
+ max_temporaries = std::max(max_temporaries, num_temporaries + 1);
+ return fmt::format("T{}.x", num_temporaries++);
+ }
+
+ std::string AllocVectorTemporary() {
+ max_temporaries = std::max(max_temporaries, num_temporaries + 1);
+ return fmt::format("T{}", num_temporaries++);
+ }
+
+ void ResetTemporaries() noexcept {
+ num_temporaries = 0;
+ }
+
+ const Device& device;
+ const ShaderIR& ir;
+ const Registry& registry;
+ const ShaderType stage;
+
+ std::size_t num_temporaries = 0;
+ std::size_t max_temporaries = 0;
+
+ std::string shader_source;
+
+ static constexpr std::string_view ADD_F32 = "ADD.F32";
+ static constexpr std::string_view ADD_S = "ADD.S";
+ static constexpr std::string_view ADD_U = "ADD.U";
+ static constexpr std::string_view MUL_F32 = "MUL.F32";
+ static constexpr std::string_view MUL_S = "MUL.S";
+ static constexpr std::string_view MUL_U = "MUL.U";
+ static constexpr std::string_view DIV_F32 = "DIV.F32";
+ static constexpr std::string_view DIV_S = "DIV.S";
+ static constexpr std::string_view DIV_U = "DIV.U";
+ static constexpr std::string_view MAD_F32 = "MAD.F32";
+ static constexpr std::string_view RSQ_F32 = "RSQ.F32";
+ static constexpr std::string_view COS_F32 = "COS.F32";
+ static constexpr std::string_view SIN_F32 = "SIN.F32";
+ static constexpr std::string_view EX2_F32 = "EX2.F32";
+ static constexpr std::string_view LG2_F32 = "LG2.F32";
+ static constexpr std::string_view SLT_F = "SLT.F32";
+ static constexpr std::string_view SLT_S = "SLT.S";
+ static constexpr std::string_view SLT_U = "SLT.U";
+ static constexpr std::string_view SEQ_F = "SEQ.F32";
+ static constexpr std::string_view SEQ_S = "SEQ.S";
+ static constexpr std::string_view SEQ_U = "SEQ.U";
+ static constexpr std::string_view SLE_F = "SLE.F32";
+ static constexpr std::string_view SLE_S = "SLE.S";
+ static constexpr std::string_view SLE_U = "SLE.U";
+ static constexpr std::string_view SGT_F = "SGT.F32";
+ static constexpr std::string_view SGT_S = "SGT.S";
+ static constexpr std::string_view SGT_U = "SGT.U";
+ static constexpr std::string_view SNE_F = "SNE.F32";
+ static constexpr std::string_view SNE_S = "SNE.S";
+ static constexpr std::string_view SNE_U = "SNE.U";
+ static constexpr std::string_view SGE_F = "SGE.F32";
+ static constexpr std::string_view SGE_S = "SGE.S";
+ static constexpr std::string_view SGE_U = "SGE.U";
+ static constexpr std::string_view AND_S = "AND.S";
+ static constexpr std::string_view AND_U = "AND.U";
+ static constexpr std::string_view TRUNC_F = "TRUNC.F";
+ static constexpr std::string_view TRUNC_S = "TRUNC.S";
+ static constexpr std::string_view TRUNC_U = "TRUNC.U";
+ static constexpr std::string_view SHL_S = "SHL.S";
+ static constexpr std::string_view SHL_U = "SHL.U";
+ static constexpr std::string_view SHR_S = "SHR.S";
+ static constexpr std::string_view SHR_U = "SHR.U";
+ static constexpr std::string_view OR_S = "OR.S";
+ static constexpr std::string_view OR_U = "OR.U";
+ static constexpr std::string_view XOR_S = "XOR.S";
+ static constexpr std::string_view XOR_U = "XOR.U";
+ static constexpr std::string_view NOT_S = "NOT.S";
+ static constexpr std::string_view NOT_U = "NOT.U";
+ static constexpr std::string_view BTC_S = "BTC.S";
+ static constexpr std::string_view BTC_U = "BTC.U";
+ static constexpr std::string_view BTFM_S = "BTFM.S";
+ static constexpr std::string_view BTFM_U = "BTFM.U";
+ static constexpr std::string_view ROUND_F = "ROUND.F";
+ static constexpr std::string_view CEIL_F = "CEIL.F";
+ static constexpr std::string_view FLR_F = "FLR.F";
+ static constexpr std::string_view I2F_S = "I2F.S";
+ static constexpr std::string_view I2F_U = "I2F.U";
+ static constexpr std::string_view MIN_F = "MIN.F";
+ static constexpr std::string_view MIN_S = "MIN.S";
+ static constexpr std::string_view MIN_U = "MIN.U";
+ static constexpr std::string_view MAX_F = "MAX.F";
+ static constexpr std::string_view MAX_S = "MAX.S";
+ static constexpr std::string_view MAX_U = "MAX.U";
+ static constexpr std::string_view MOV_U = "MOV.U";
+ static constexpr std::string_view TGBALLOT_U = "TGBALLOT.U";
+ static constexpr std::string_view TGALL_U = "TGALL.U";
+ static constexpr std::string_view TGANY_U = "TGANY.U";
+ static constexpr std::string_view TGEQ_U = "TGEQ.U";
+ static constexpr std::string_view EXCH = "EXCH";
+ static constexpr std::string_view ADD = "ADD";
+ static constexpr std::string_view MIN = "MIN";
+ static constexpr std::string_view MAX = "MAX";
+ static constexpr std::string_view AND = "AND";
+ static constexpr std::string_view OR = "OR";
+ static constexpr std::string_view XOR = "XOR";
+ static constexpr std::string_view U32 = "U32";
+ static constexpr std::string_view S32 = "S32";
+
+ static constexpr std::size_t NUM_ENTRIES = static_cast<std::size_t>(OperationCode::Amount);
+ using DecompilerType = std::string (ARBDecompiler::*)(Operation);
+ static constexpr std::array<DecompilerType, NUM_ENTRIES> OPERATION_DECOMPILERS = {
+ &ARBDecompiler::Assign,
+
+ &ARBDecompiler::Select,
+
+ &ARBDecompiler::Binary<ADD_F32>,
+ &ARBDecompiler::Binary<MUL_F32>,
+ &ARBDecompiler::Binary<DIV_F32>,
+ &ARBDecompiler::Trinary<MAD_F32>,
+ &ARBDecompiler::Negate<'F'>,
+ &ARBDecompiler::Absolute<'F'>,
+ &ARBDecompiler::FClamp,
+ &ARBDecompiler::FCastHalf0,
+ &ARBDecompiler::FCastHalf1,
+ &ARBDecompiler::Binary<MIN_F>,
+ &ARBDecompiler::Binary<MAX_F>,
+ &ARBDecompiler::Unary<COS_F32>,
+ &ARBDecompiler::Unary<SIN_F32>,
+ &ARBDecompiler::Unary<EX2_F32>,
+ &ARBDecompiler::Unary<LG2_F32>,
+ &ARBDecompiler::Unary<RSQ_F32>,
+ &ARBDecompiler::FSqrt,
+ &ARBDecompiler::Unary<ROUND_F>,
+ &ARBDecompiler::Unary<FLR_F>,
+ &ARBDecompiler::Unary<CEIL_F>,
+ &ARBDecompiler::Unary<TRUNC_F>,
+ &ARBDecompiler::Unary<I2F_S>,
+ &ARBDecompiler::Unary<I2F_U>,
+ &ARBDecompiler::FSwizzleAdd,
+
+ &ARBDecompiler::Binary<ADD_S>,
+ &ARBDecompiler::Binary<MUL_S>,
+ &ARBDecompiler::Binary<DIV_S>,
+ &ARBDecompiler::Negate<'S'>,
+ &ARBDecompiler::Absolute<'S'>,
+ &ARBDecompiler::Binary<MIN_S>,
+ &ARBDecompiler::Binary<MAX_S>,
+
+ &ARBDecompiler::Unary<TRUNC_S>,
+ &ARBDecompiler::Unary<MOV_U>,
+ &ARBDecompiler::Binary<SHL_S>,
+ &ARBDecompiler::Binary<SHR_U>,
+ &ARBDecompiler::Binary<SHR_S>,
+ &ARBDecompiler::Binary<AND_S>,
+ &ARBDecompiler::Binary<OR_S>,
+ &ARBDecompiler::Binary<XOR_S>,
+ &ARBDecompiler::Unary<NOT_S>,
+ &ARBDecompiler::BitfieldInsert<'S'>,
+ &ARBDecompiler::BitfieldExtract<'S'>,
+ &ARBDecompiler::Unary<BTC_S>,
+ &ARBDecompiler::Unary<BTFM_S>,
+
+ &ARBDecompiler::Binary<ADD_U>,
+ &ARBDecompiler::Binary<MUL_U>,
+ &ARBDecompiler::Binary<DIV_U>,
+ &ARBDecompiler::Binary<MIN_U>,
+ &ARBDecompiler::Binary<MAX_U>,
+ &ARBDecompiler::Unary<TRUNC_U>,
+ &ARBDecompiler::Unary<MOV_U>,
+ &ARBDecompiler::Binary<SHL_U>,
+ &ARBDecompiler::Binary<SHR_U>,
+ &ARBDecompiler::Binary<SHR_U>,
+ &ARBDecompiler::Binary<AND_U>,
+ &ARBDecompiler::Binary<OR_U>,
+ &ARBDecompiler::Binary<XOR_U>,
+ &ARBDecompiler::Unary<NOT_U>,
+ &ARBDecompiler::BitfieldInsert<'U'>,
+ &ARBDecompiler::BitfieldExtract<'U'>,
+ &ARBDecompiler::Unary<BTC_U>,
+ &ARBDecompiler::Unary<BTFM_U>,
+
+ &ARBDecompiler::HAdd2,
+ &ARBDecompiler::HMul2,
+ &ARBDecompiler::HFma2,
+ &ARBDecompiler::HAbsolute,
+ &ARBDecompiler::HNegate,
+ &ARBDecompiler::HClamp,
+ &ARBDecompiler::HCastFloat,
+ &ARBDecompiler::HUnpack,
+ &ARBDecompiler::HMergeF32,
+ &ARBDecompiler::HMergeH0,
+ &ARBDecompiler::HMergeH1,
+ &ARBDecompiler::HPack2,
+
+ &ARBDecompiler::LogicalAssign,
+ &ARBDecompiler::Binary<AND_U>,
+ &ARBDecompiler::Binary<OR_U>,
+ &ARBDecompiler::Binary<XOR_U>,
+ &ARBDecompiler::Unary<NOT_U>,
+ &ARBDecompiler::LogicalPick2,
+ &ARBDecompiler::LogicalAnd2,
+
+ &ARBDecompiler::FloatComparison<SLT_F, false>,
+ &ARBDecompiler::FloatComparison<SEQ_F, false>,
+ &ARBDecompiler::FloatComparison<SLE_F, false>,
+ &ARBDecompiler::FloatComparison<SGT_F, false>,
+ &ARBDecompiler::FloatComparison<SNE_F, false>,
+ &ARBDecompiler::FloatComparison<SGE_F, false>,
+ &ARBDecompiler::FloatOrdered,
+ &ARBDecompiler::FloatUnordered,
+ &ARBDecompiler::FloatComparison<SLT_F, true>,
+ &ARBDecompiler::FloatComparison<SEQ_F, true>,
+ &ARBDecompiler::FloatComparison<SLE_F, true>,
+ &ARBDecompiler::FloatComparison<SGT_F, true>,
+ &ARBDecompiler::FloatComparison<SNE_F, true>,
+ &ARBDecompiler::FloatComparison<SGE_F, true>,
+
+ &ARBDecompiler::Binary<SLT_S>,
+ &ARBDecompiler::Binary<SEQ_S>,
+ &ARBDecompiler::Binary<SLE_S>,
+ &ARBDecompiler::Binary<SGT_S>,
+ &ARBDecompiler::Binary<SNE_S>,
+ &ARBDecompiler::Binary<SGE_S>,
+
+ &ARBDecompiler::Binary<SLT_U>,
+ &ARBDecompiler::Binary<SEQ_U>,
+ &ARBDecompiler::Binary<SLE_U>,
+ &ARBDecompiler::Binary<SGT_U>,
+ &ARBDecompiler::Binary<SNE_U>,
+ &ARBDecompiler::Binary<SGE_U>,
+
+ &ARBDecompiler::LogicalAddCarry,
+
+ &ARBDecompiler::HalfComparison<SLT_F, false>,
+ &ARBDecompiler::HalfComparison<SEQ_F, false>,
+ &ARBDecompiler::HalfComparison<SLE_F, false>,
+ &ARBDecompiler::HalfComparison<SGT_F, false>,
+ &ARBDecompiler::HalfComparison<SNE_F, false>,
+ &ARBDecompiler::HalfComparison<SGE_F, false>,
+ &ARBDecompiler::HalfComparison<SLT_F, true>,
+ &ARBDecompiler::HalfComparison<SEQ_F, true>,
+ &ARBDecompiler::HalfComparison<SLE_F, true>,
+ &ARBDecompiler::HalfComparison<SGT_F, true>,
+ &ARBDecompiler::HalfComparison<SNE_F, true>,
+ &ARBDecompiler::HalfComparison<SGE_F, true>,
+
+ &ARBDecompiler::Texture,
+ &ARBDecompiler::Texture,
+ &ARBDecompiler::TextureGather,
+ &ARBDecompiler::TextureQueryDimensions,
+ &ARBDecompiler::TextureQueryLod,
+ &ARBDecompiler::TexelFetch,
+ &ARBDecompiler::TextureGradient,
+
+ &ARBDecompiler::ImageLoad,
+ &ARBDecompiler::ImageStore,
+
+ &ARBDecompiler::AtomicImage<ADD, U32>,
+ &ARBDecompiler::AtomicImage<AND, U32>,
+ &ARBDecompiler::AtomicImage<OR, U32>,
+ &ARBDecompiler::AtomicImage<XOR, U32>,
+ &ARBDecompiler::AtomicImage<EXCH, U32>,
+
+ &ARBDecompiler::Atomic<EXCH, U32>,
+ &ARBDecompiler::Atomic<ADD, U32>,
+ &ARBDecompiler::Atomic<MIN, U32>,
+ &ARBDecompiler::Atomic<MAX, U32>,
+ &ARBDecompiler::Atomic<AND, U32>,
+ &ARBDecompiler::Atomic<OR, U32>,
+ &ARBDecompiler::Atomic<XOR, U32>,
+
+ &ARBDecompiler::Atomic<EXCH, S32>,
+ &ARBDecompiler::Atomic<ADD, S32>,
+ &ARBDecompiler::Atomic<MIN, S32>,
+ &ARBDecompiler::Atomic<MAX, S32>,
+ &ARBDecompiler::Atomic<AND, S32>,
+ &ARBDecompiler::Atomic<OR, S32>,
+ &ARBDecompiler::Atomic<XOR, S32>,
+
+ &ARBDecompiler::Atomic<ADD, U32>,
+ &ARBDecompiler::Atomic<MIN, U32>,
+ &ARBDecompiler::Atomic<MAX, U32>,
+ &ARBDecompiler::Atomic<AND, U32>,
+ &ARBDecompiler::Atomic<OR, U32>,
+ &ARBDecompiler::Atomic<XOR, U32>,
+
+ &ARBDecompiler::Atomic<ADD, S32>,
+ &ARBDecompiler::Atomic<MIN, S32>,
+ &ARBDecompiler::Atomic<MAX, S32>,
+ &ARBDecompiler::Atomic<AND, S32>,
+ &ARBDecompiler::Atomic<OR, S32>,
+ &ARBDecompiler::Atomic<XOR, S32>,
+
+ &ARBDecompiler::Branch,
+ &ARBDecompiler::BranchIndirect,
+ &ARBDecompiler::PushFlowStack,
+ &ARBDecompiler::PopFlowStack,
+ &ARBDecompiler::Exit,
+ &ARBDecompiler::Discard,
+
+ &ARBDecompiler::EmitVertex,
+ &ARBDecompiler::EndPrimitive,
+
+ &ARBDecompiler::InvocationId,
+ &ARBDecompiler::YNegate,
+ &ARBDecompiler::LocalInvocationId<'x'>,
+ &ARBDecompiler::LocalInvocationId<'y'>,
+ &ARBDecompiler::LocalInvocationId<'z'>,
+ &ARBDecompiler::WorkGroupId<'x'>,
+ &ARBDecompiler::WorkGroupId<'y'>,
+ &ARBDecompiler::WorkGroupId<'z'>,
+
+ &ARBDecompiler::Unary<TGBALLOT_U>,
+ &ARBDecompiler::Unary<TGALL_U>,
+ &ARBDecompiler::Unary<TGANY_U>,
+ &ARBDecompiler::Unary<TGEQ_U>,
+
+ &ARBDecompiler::ThreadId,
+ &ARBDecompiler::ThreadMask<'e', 'q'>,
+ &ARBDecompiler::ThreadMask<'g', 'e'>,
+ &ARBDecompiler::ThreadMask<'g', 't'>,
+ &ARBDecompiler::ThreadMask<'l', 'e'>,
+ &ARBDecompiler::ThreadMask<'l', 't'>,
+ &ARBDecompiler::ShuffleIndexed,
+
+ &ARBDecompiler::Barrier,
+ &ARBDecompiler::MemoryBarrierGroup,
+ &ARBDecompiler::MemoryBarrierGlobal,
+ };
+};
+
+ARBDecompiler::ARBDecompiler(const Device& device, const ShaderIR& ir, const Registry& registry,
+ ShaderType stage, std::string_view identifier)
+ : device{device}, ir{ir}, registry{registry}, stage{stage} {
+ AddLine("TEMP RC;");
+ if (ir.IsDecompiled()) {
+ DecompileAST();
+ } else {
+ DecompileBranchMode();
+ }
+ AddLine("END");
+
+ const std::string code = std::move(shader_source);
+ DeclareHeader();
+ DeclareVertex();
+ DeclareGeometry();
+ DeclareFragment();
+ DeclareCompute();
+ DeclareInputAttributes();
+ DeclareOutputAttributes();
+ DeclareLocalMemory();
+ DeclareGlobalMemory();
+ DeclareConstantBuffers();
+ DeclareRegisters();
+ DeclareTemporaries();
+ DeclarePredicates();
+ DeclareInternalFlags();
+
+ shader_source += code;
+}
+
+std::string_view HeaderStageName(ShaderType stage) {
+ switch (stage) {
+ case ShaderType::Vertex:
+ return "vp";
+ case ShaderType::Geometry:
+ return "gp";
+ case ShaderType::Fragment:
+ return "fp";
+ case ShaderType::Compute:
+ return "cp";
+ default:
+ UNREACHABLE();
+ return "";
+ }
+}
+
+void ARBDecompiler::DeclareHeader() {
+ AddLine("!!NV{}5.0", HeaderStageName(stage));
+ // Enabling this allows us to cheat on some instructions like TXL with SHADOWARRAY2D
+ AddLine("OPTION NV_internal;");
+ AddLine("OPTION NV_gpu_program_fp64;");
+ AddLine("OPTION NV_shader_storage_buffer;");
+ AddLine("OPTION NV_shader_thread_group;");
+ if (ir.UsesWarps() && device.HasWarpIntrinsics()) {
+ AddLine("OPTION NV_shader_thread_shuffle;");
+ }
+ if (stage == ShaderType::Vertex) {
+ if (device.HasNvViewportArray2()) {
+ AddLine("OPTION NV_viewport_array2;");
+ }
+ }
+ if (stage == ShaderType::Fragment) {
+ AddLine("OPTION ARB_draw_buffers;");
+ }
+ if (device.HasImageLoadFormatted()) {
+ AddLine("OPTION EXT_shader_image_load_formatted;");
+ }
+}
+
+void ARBDecompiler::DeclareVertex() {
+ if (stage != ShaderType::Vertex) {
+ return;
+ }
+ AddLine("OUTPUT result_clip[] = {{ result.clip[0..7] }};");
+}
+
+void ARBDecompiler::DeclareGeometry() {
+ if (stage != ShaderType::Geometry) {
+ return;
+ }
+ const auto& info = registry.GetGraphicsInfo();
+ const auto& header = ir.GetHeader();
+ AddLine("PRIMITIVE_IN {};", PrimitiveDescription(info.primitive_topology));
+ AddLine("PRIMITIVE_OUT {};", TopologyName(header.common3.output_topology));
+ AddLine("VERTICES_OUT {};", header.common4.max_output_vertices.Value());
+ AddLine("ATTRIB vertex_position = vertex.position;");
+}
+
+void ARBDecompiler::DeclareFragment() {
+ if (stage != ShaderType::Fragment) {
+ return;
+ }
+ AddLine("OUTPUT result_color7 = result.color[7];");
+ AddLine("OUTPUT result_color6 = result.color[6];");
+ AddLine("OUTPUT result_color5 = result.color[5];");
+ AddLine("OUTPUT result_color4 = result.color[4];");
+ AddLine("OUTPUT result_color3 = result.color[3];");
+ AddLine("OUTPUT result_color2 = result.color[2];");
+ AddLine("OUTPUT result_color1 = result.color[1];");
+ AddLine("OUTPUT result_color0 = result.color;");
+}
+
+void ARBDecompiler::DeclareCompute() {
+ if (stage != ShaderType::Compute) {
+ return;
+ }
+ const ComputeInfo& info = registry.GetComputeInfo();
+ AddLine("GROUP_SIZE {} {} {};", info.workgroup_size[0], info.workgroup_size[1],
+ info.workgroup_size[2]);
+ if (info.shared_memory_size_in_words > 0) {
+ const u32 size_in_bytes = info.shared_memory_size_in_words * 4;
+ AddLine("SHARED_MEMORY {};", size_in_bytes);
+ AddLine("SHARED shared_mem[] = {{program.sharedmem}};");
+ }
+}
+
+void ARBDecompiler::DeclareInputAttributes() {
+ if (stage == ShaderType::Compute) {
+ return;
+ }
+ const std::string_view stage_name = StageInputName(stage);
+ for (const auto attribute : ir.GetInputAttributes()) {
+ if (!IsGenericAttribute(attribute)) {
+ continue;
+ }
+ const u32 index = GetGenericAttributeIndex(attribute);
+
+ std::string_view suffix;
+ if (stage == ShaderType::Fragment) {
+ const auto input_mode{ir.GetHeader().ps.GetPixelImap(index)};
+ if (input_mode == PixelImap::Unused) {
+ return;
+ }
+ suffix = GetInputFlags(input_mode);
+ }
+ AddLine("{}ATTRIB in_attr{}[] = {{ {}.attrib[{}..{}] }};", suffix, index, stage_name, index,
+ index);
+ }
+}
+
+void ARBDecompiler::DeclareOutputAttributes() {
+ if (stage == ShaderType::Compute) {
+ return;
+ }
+ for (const auto attribute : ir.GetOutputAttributes()) {
+ if (!IsGenericAttribute(attribute)) {
+ continue;
+ }
+ const u32 index = GetGenericAttributeIndex(attribute);
+ AddLine("OUTPUT out_attr{}[] = {{ result.attrib[{}..{}] }};", index, index, index);
+ }
+}
+
+void ARBDecompiler::DeclareLocalMemory() {
+ u64 size = 0;
+ if (stage == ShaderType::Compute) {
+ size = registry.GetComputeInfo().local_memory_size_in_words * 4ULL;
+ } else {
+ size = ir.GetHeader().GetLocalMemorySize();
+ }
+ if (size == 0) {
+ return;
+ }
+ const u64 element_count = Common::AlignUp(size, 4) / 4;
+ AddLine("TEMP lmem[{}];", element_count);
+}
+
+void ARBDecompiler::DeclareGlobalMemory() {
+ u32 binding = 0; // device.GetBaseBindings(stage).shader_storage_buffer;
+ for (const auto& pair : ir.GetGlobalMemory()) {
+ const auto& base = pair.first;
+ AddLine("STORAGE {}[] = {{ program.storage[{}] }};", GlobalMemoryName(base), binding);
+ ++binding;
+ }
+}
+
+void ARBDecompiler::DeclareConstantBuffers() {
+ u32 binding = 0;
+ for (const auto& cbuf : ir.GetConstantBuffers()) {
+ AddLine("CBUFFER cbuf{}[] = {{ program.buffer[{}] }};", cbuf.first, binding);
+ ++binding;
+ }
+}
+
+void ARBDecompiler::DeclareRegisters() {
+ for (const u32 gpr : ir.GetRegisters()) {
+ AddLine("TEMP R{};", gpr);
+ }
+}
+
+void ARBDecompiler::DeclareTemporaries() {
+ for (std::size_t i = 0; i < max_temporaries; ++i) {
+ AddLine("TEMP T{};", i);
+ }
+}
+
+void ARBDecompiler::DeclarePredicates() {
+ for (const Tegra::Shader::Pred pred : ir.GetPredicates()) {
+ AddLine("TEMP P{};", static_cast<u64>(pred));
+ }
+}
+
+void ARBDecompiler::DeclareInternalFlags() {
+ for (const char* name : INTERNAL_FLAG_NAMES) {
+ AddLine("TEMP {};", name);
+ }
+}
+
+void ARBDecompiler::InitializeVariables() {
+ if (stage == ShaderType::Vertex || stage == ShaderType::Geometry) {
+ AddLine("MOV.F result.position, {{0, 0, 0, 1}};");
+ }
+ for (const auto attribute : ir.GetOutputAttributes()) {
+ if (!IsGenericAttribute(attribute)) {
+ continue;
+ }
+ const u32 index = GetGenericAttributeIndex(attribute);
+ AddLine("MOV.F result.attrib[{}], {{0, 0, 0, 1}};", index);
+ }
+ for (const u32 gpr : ir.GetRegisters()) {
+ AddLine("MOV.F R{}, {{0, 0, 0, 0}};", gpr);
+ }
+ for (const Tegra::Shader::Pred pred : ir.GetPredicates()) {
+ AddLine("MOV.U P{}, {{0, 0, 0, 0}};", static_cast<u64>(pred));
+ }
+}
+
+void ARBDecompiler::DecompileAST() {
+ const u32 num_flow_variables = ir.GetASTNumVariables();
+ for (u32 i = 0; i < num_flow_variables; ++i) {
+ AddLine("TEMP F{};", i);
+ }
+ for (u32 i = 0; i < num_flow_variables; ++i) {
+ AddLine("MOV.U F{}, {{0, 0, 0, 0}};", i);
+ }
+
+ InitializeVariables();
+
+ VisitAST(ir.GetASTProgram());
+}
+
+void ARBDecompiler::DecompileBranchMode() {
+ static constexpr u32 FLOW_STACK_SIZE = 20;
+ if (!ir.IsFlowStackDisabled()) {
+ AddLine("TEMP SSY[{}];", FLOW_STACK_SIZE);
+ AddLine("TEMP PBK[{}];", FLOW_STACK_SIZE);
+ AddLine("TEMP SSY_TOP;");
+ AddLine("TEMP PBK_TOP;");
+ }
+
+ AddLine("TEMP PC;");
+
+ if (!ir.IsFlowStackDisabled()) {
+ AddLine("MOV.U SSY_TOP.x, 0;");
+ AddLine("MOV.U PBK_TOP.x, 0;");
+ }
+
+ InitializeVariables();
+
+ const auto basic_block_end = ir.GetBasicBlocks().end();
+ auto basic_block_it = ir.GetBasicBlocks().begin();
+ const u32 first_address = basic_block_it->first;
+ AddLine("MOV.U PC.x, {};", first_address);
+
+ AddLine("REP;");
+
+ std::size_t num_blocks = 0;
+ while (basic_block_it != basic_block_end) {
+ const auto& [address, bb] = *basic_block_it;
+ ++num_blocks;
+
+ AddLine("SEQ.S.CC RC.x, PC.x, {};", address);
+ AddLine("IF NE.x;");
+
+ VisitBlock(bb);
+
+ ++basic_block_it;
+
+ if (basic_block_it != basic_block_end) {
+ const auto op = std::get_if<OperationNode>(&*bb[bb.size() - 1]);
+ if (!op || op->GetCode() != OperationCode::Branch) {
+ const u32 next_address = basic_block_it->first;
+ AddLine("MOV.U PC.x, {};", next_address);
+ AddLine("CONT;");
+ }
+ }
+
+ AddLine("ELSE;");
+ }
+ AddLine("RET;");
+ while (num_blocks--) {
+ AddLine("ENDIF;");
+ }
+
+ AddLine("ENDREP;");
+}
+
+void ARBDecompiler::VisitAST(const ASTNode& node) {
+ if (const auto ast = std::get_if<ASTProgram>(&*node->GetInnerData())) {
+ for (ASTNode current = ast->nodes.GetFirst(); current; current = current->GetNext()) {
+ VisitAST(current);
+ }
+ } else if (const auto ast = std::get_if<ASTIfThen>(&*node->GetInnerData())) {
+ const std::string condition = VisitExpression(ast->condition);
+ ResetTemporaries();
+
+ AddLine("MOVC.U RC.x, {};", condition);
+ AddLine("IF NE.x;");
+ for (ASTNode current = ast->nodes.GetFirst(); current; current = current->GetNext()) {
+ VisitAST(current);
+ }
+ AddLine("ENDIF;");
+ } else if (const auto ast = std::get_if<ASTIfElse>(&*node->GetInnerData())) {
+ AddLine("ELSE;");
+ for (ASTNode current = ast->nodes.GetFirst(); current; current = current->GetNext()) {
+ VisitAST(current);
+ }
+ } else if (const auto ast = std::get_if<ASTBlockDecoded>(&*node->GetInnerData())) {
+ VisitBlock(ast->nodes);
+ } else if (const auto ast = std::get_if<ASTVarSet>(&*node->GetInnerData())) {
+ AddLine("MOV.U F{}, {};", ast->index, VisitExpression(ast->condition));
+ ResetTemporaries();
+ } else if (const auto ast = std::get_if<ASTDoWhile>(&*node->GetInnerData())) {
+ const std::string condition = VisitExpression(ast->condition);
+ ResetTemporaries();
+ AddLine("REP;");
+ for (ASTNode current = ast->nodes.GetFirst(); current; current = current->GetNext()) {
+ VisitAST(current);
+ }
+ AddLine("MOVC.U RC.x, {};", condition);
+ AddLine("BRK (NE.x);");
+ AddLine("ENDREP;");
+ } else if (const auto ast = std::get_if<ASTReturn>(&*node->GetInnerData())) {
+ const bool is_true = ExprIsTrue(ast->condition);
+ if (!is_true) {
+ AddLine("MOVC.U RC.x, {};", VisitExpression(ast->condition));
+ AddLine("IF NE.x;");
+ ResetTemporaries();
+ }
+ if (ast->kills) {
+ AddLine("KIL TR;");
+ } else {
+ Exit();
+ }
+ if (!is_true) {
+ AddLine("ENDIF;");
+ }
+ } else if (const auto ast = std::get_if<ASTBreak>(&*node->GetInnerData())) {
+ if (ExprIsTrue(ast->condition)) {
+ AddLine("BRK;");
+ } else {
+ AddLine("MOVC.U RC.x, {};", VisitExpression(ast->condition));
+ AddLine("BRK (NE.x);");
+ ResetTemporaries();
+ }
+ } else if (std::holds_alternative<ASTLabel>(*node->GetInnerData())) {
+ // Nothing to do
+ } else {
+ UNREACHABLE();
+ }
+}
+
+std::string ARBDecompiler::VisitExpression(const Expr& node) {
+ const std::string result = AllocTemporary();
+ if (const auto expr = std::get_if<ExprAnd>(&*node)) {
+ AddLine("AND.U {}, {}, {};", result, VisitExpression(expr->operand1),
+ VisitExpression(expr->operand2));
+ return result;
+ }
+ if (const auto expr = std::get_if<ExprOr>(&*node)) {
+ const std::string result = AllocTemporary();
+ AddLine("OR.U {}, {}, {};", result, VisitExpression(expr->operand1),
+ VisitExpression(expr->operand2));
+ return result;
+ }
+ if (const auto expr = std::get_if<ExprNot>(&*node)) {
+ const std::string result = AllocTemporary();
+ AddLine("CMP.S {}, {}, 0, -1;", result, VisitExpression(expr->operand1));
+ return result;
+ }
+ if (const auto expr = std::get_if<ExprPredicate>(&*node)) {
+ return fmt::format("P{}.x", static_cast<u64>(expr->predicate));
+ }
+ if (const auto expr = std::get_if<ExprCondCode>(&*node)) {
+ return Visit(ir.GetConditionCode(expr->cc));
+ }
+ if (const auto expr = std::get_if<ExprVar>(&*node)) {
+ return fmt::format("F{}.x", expr->var_index);
+ }
+ if (const auto expr = std::get_if<ExprBoolean>(&*node)) {
+ return expr->value ? "0xffffffff" : "0";
+ }
+ if (const auto expr = std::get_if<ExprGprEqual>(&*node)) {
+ const std::string result = AllocTemporary();
+ AddLine("SEQ.U {}, R{}.x, {};", result, expr->gpr, expr->value);
+ return result;
+ }
+ UNREACHABLE();
+ return "0";
+}
+
+void ARBDecompiler::VisitBlock(const NodeBlock& bb) {
+ for (const auto& node : bb) {
+ Visit(node);
+ }
+}
+
+std::string ARBDecompiler::Visit(const Node& node) {
+ if (const auto operation = std::get_if<OperationNode>(&*node)) {
+ if (const auto amend_index = operation->GetAmendIndex()) {
+ Visit(ir.GetAmendNode(*amend_index));
+ }
+ const std::size_t index = static_cast<std::size_t>(operation->GetCode());
+ if (index >= OPERATION_DECOMPILERS.size()) {
+ UNREACHABLE_MSG("Out of bounds operation: {}", index);
+ return {};
+ }
+ const auto decompiler = OPERATION_DECOMPILERS[index];
+ if (decompiler == nullptr) {
+ UNREACHABLE_MSG("Undefined operation: {}", index);
+ return {};
+ }
+ return (this->*decompiler)(*operation);
+ }
+
+ if (const auto gpr = std::get_if<GprNode>(&*node)) {
+ const u32 index = gpr->GetIndex();
+ if (index == Register::ZeroIndex) {
+ return "{0, 0, 0, 0}.x";
+ }
+ return fmt::format("R{}.x", index);
+ }
+
+ if (const auto cv = std::get_if<CustomVarNode>(&*node)) {
+ return fmt::format("CV{}.x", cv->GetIndex());
+ }
+
+ if (const auto immediate = std::get_if<ImmediateNode>(&*node)) {
+ const std::string temporary = AllocTemporary();
+ AddLine("MOV.U {}, {};", temporary, immediate->GetValue());
+ return temporary;
+ }
+
+ if (const auto predicate = std::get_if<PredicateNode>(&*node)) {
+ const std::string temporary = AllocTemporary();
+ switch (const auto index = predicate->GetIndex(); index) {
+ case Tegra::Shader::Pred::UnusedIndex:
+ AddLine("MOV.S {}, -1;", temporary);
+ break;
+ case Tegra::Shader::Pred::NeverExecute:
+ AddLine("MOV.S {}, 0;", temporary);
+ break;
+ default:
+ AddLine("MOV.S {}, P{}.x;", temporary, static_cast<u64>(index));
+ break;
+ }
+ if (predicate->IsNegated()) {
+ AddLine("CMP.S {}, {}, 0, -1;", temporary, temporary);
+ }
+ return temporary;
+ }
+
+ if (const auto abuf = std::get_if<AbufNode>(&*node)) {
+ if (abuf->IsPhysicalBuffer()) {
+ UNIMPLEMENTED_MSG("Physical buffers are not implemented");
+ return "{0, 0, 0, 0}.x";
+ }
+
+ const auto buffer_index = [this, &abuf]() -> std::string {
+ if (stage != ShaderType::Geometry) {
+ return "";
+ }
+ return fmt::format("[{}]", Visit(abuf->GetBuffer()));
+ };
+
+ const Attribute::Index index = abuf->GetIndex();
+ const u32 element = abuf->GetElement();
+ const char swizzle = Swizzle(element);
+ switch (index) {
+ case Attribute::Index::Position: {
+ if (stage == ShaderType::Geometry) {
+ return fmt::format("{}_position[{}].{}", StageInputName(stage),
+ Visit(abuf->GetBuffer()), swizzle);
+ } else {
+ return fmt::format("{}.position.{}", StageInputName(stage), swizzle);
+ }
+ }
+ case Attribute::Index::TessCoordInstanceIDVertexID:
+ ASSERT(stage == ShaderType::Vertex);
+ switch (element) {
+ case 2:
+ return "vertex.instance";
+ case 3:
+ return "vertex.id";
+ }
+ UNIMPLEMENTED_MSG("Unmanaged TessCoordInstanceIDVertexID element={}", element);
+ break;
+ case Attribute::Index::PointCoord:
+ switch (element) {
+ case 0:
+ return "fragment.pointcoord.x";
+ case 1:
+ return "fragment.pointcoord.y";
+ }
+ UNIMPLEMENTED();
+ break;
+ case Attribute::Index::FrontFacing: {
+ ASSERT(stage == ShaderType::Fragment);
+ ASSERT(element == 3);
+ const std::string temporary = AllocVectorTemporary();
+ AddLine("SGT.S RC.x, fragment.facing, {{0, 0, 0, 0}};");
+ AddLine("MOV.U.CC RC.x, -RC;");
+ AddLine("MOV.S {}.x, 0;", temporary);
+ AddLine("MOV.S {}.x (NE.x), -1;", temporary);
+ return fmt::format("{}.x", temporary);
+ }
+ default:
+ if (IsGenericAttribute(index)) {
+ if (stage == ShaderType::Geometry) {
+ return fmt::format("in_attr{}[{}][0].{}", GetGenericAttributeIndex(index),
+ Visit(abuf->GetBuffer()), swizzle);
+ } else {
+ return fmt::format("{}.attrib[{}].{}", StageInputName(stage),
+ GetGenericAttributeIndex(index), swizzle);
+ }
+ }
+ UNIMPLEMENTED_MSG("Unimplemented input attribute={}", static_cast<int>(index));
+ break;
+ }
+ return "{0, 0, 0, 0}.x";
+ }
+
+ if (const auto cbuf = std::get_if<CbufNode>(&*node)) {
+ std::string offset_string;
+ const auto& offset = cbuf->GetOffset();
+ if (const auto imm = std::get_if<ImmediateNode>(&*offset)) {
+ offset_string = std::to_string(imm->GetValue());
+ } else {
+ offset_string = Visit(offset);
+ }
+ const std::string temporary = AllocTemporary();
+ AddLine("LDC.F32 {}, cbuf{}[{}];", temporary, cbuf->GetIndex(), offset_string);
+ return temporary;
+ }
+
+ if (const auto gmem = std::get_if<GmemNode>(&*node)) {
+ const std::string temporary = AllocTemporary();
+ AddLine("SUB.U {}, {}, {};", temporary, Visit(gmem->GetRealAddress()),
+ Visit(gmem->GetBaseAddress()));
+ AddLine("LDB.U32 {}, {}[{}];", temporary, GlobalMemoryName(gmem->GetDescriptor()),
+ temporary);
+ return temporary;
+ }
+
+ if (const auto lmem = std::get_if<LmemNode>(&*node)) {
+ const std::string temporary = Visit(lmem->GetAddress());
+ AddLine("SHR.U {}, {}, 2;", temporary, temporary);
+ AddLine("MOV.U {}, lmem[{}].x;", temporary, temporary);
+ return temporary;
+ }
+
+ if (const auto smem = std::get_if<SmemNode>(&*node)) {
+ const std::string temporary = Visit(smem->GetAddress());
+ AddLine("LDS.U32 {}, shared_mem[{}];", temporary, temporary);
+ return temporary;
+ }
+
+ if (const auto internal_flag = std::get_if<InternalFlagNode>(&*node)) {
+ const std::size_t index = static_cast<std::size_t>(internal_flag->GetFlag());
+ return fmt::format("{}.x", INTERNAL_FLAG_NAMES[index]);
+ }
+
+ if (const auto conditional = std::get_if<ConditionalNode>(&*node)) {
+ if (const auto amend_index = conditional->GetAmendIndex()) {
+ Visit(ir.GetAmendNode(*amend_index));
+ }
+ AddLine("MOVC.U RC.x, {};", Visit(conditional->GetCondition()));
+ AddLine("IF NE.x;");
+ VisitBlock(conditional->GetCode());
+ AddLine("ENDIF;");
+ return {};
+ }
+
+ if (const auto cmt = std::get_if<CommentNode>(&*node)) {
+ // Uncommenting this will generate invalid code. GLASM lacks comments.
+ // AddLine("// {}", cmt->GetText());
+ return {};
+ }
+
+ UNIMPLEMENTED();
+ return {};
+}
+
+std::pair<std::string, std::size_t> ARBDecompiler::BuildCoords(Operation operation) {
+ const auto& meta = std::get<MetaTexture>(operation.GetMeta());
+ UNIMPLEMENTED_IF(meta.sampler.is_indexed);
+ UNIMPLEMENTED_IF(meta.sampler.is_shadow && meta.sampler.is_array &&
+ meta.sampler.type == Tegra::Shader::TextureType::TextureCube);
+
+ const std::size_t count = operation.GetOperandsCount();
+ std::string temporary = AllocVectorTemporary();
+ std::size_t i = 0;
+ for (; i < count; ++i) {
+ AddLine("MOV.F {}.{}, {};", temporary, Swizzle(i), Visit(operation[i]));
+ }
+ if (meta.sampler.is_array) {
+ AddLine("I2F.S {}.{}, {};", temporary, Swizzle(i++), Visit(meta.array));
+ }
+ if (meta.sampler.is_shadow) {
+ AddLine("MOV.F {}.{}, {};", temporary, Swizzle(i++), Visit(meta.depth_compare));
+ }
+ return {std::move(temporary), i};
+}
+
+std::string ARBDecompiler::BuildAoffi(Operation operation) {
+ const auto& meta = std::get<MetaTexture>(operation.GetMeta());
+ if (meta.aoffi.empty()) {
+ return {};
+ }
+ const std::string temporary = AllocVectorTemporary();
+ std::size_t i = 0;
+ for (auto& node : meta.aoffi) {
+ AddLine("MOV.S {}.{}, {};", temporary, Swizzle(i++), Visit(node));
+ }
+ return fmt::format(", offset({})", temporary);
+}
+
+void ARBDecompiler::Exit() {
+ if (stage != ShaderType::Fragment) {
+ AddLine("RET;");
+ return;
+ }
+
+ const auto safe_get_register = [this](u32 reg) -> std::string {
+ // TODO(Rodrigo): Replace with contains once C++20 releases
+ const auto& used_registers = ir.GetRegisters();
+ if (used_registers.find(reg) != used_registers.end()) {
+ return fmt::format("R{}.x", reg);
+ }
+ return "{0, 0, 0, 0}.x";
+ };
+
+ const auto& header = ir.GetHeader();
+ u32 current_reg = 0;
+ for (u32 rt = 0; rt < Tegra::Engines::Maxwell3D::Regs::NumRenderTargets; ++rt) {
+ for (u32 component = 0; component < 4; ++component) {
+ if (!header.ps.IsColorComponentOutputEnabled(rt, component)) {
+ continue;
+ }
+ AddLine("MOV.F result_color{}.{}, {};", rt, Swizzle(component),
+ safe_get_register(current_reg));
+ ++current_reg;
+ }
+ }
+ if (header.ps.omap.depth) {
+ AddLine("MOV.F result.depth.z, {};", safe_get_register(current_reg + 1));
+ }
+
+ AddLine("RET;");
+}
+
+std::string ARBDecompiler::Assign(Operation operation) {
+ const Node& dest = operation[0];
+ const Node& src = operation[1];
+
+ std::string dest_name;
+ if (const auto gpr = std::get_if<GprNode>(&*dest)) {
+ if (gpr->GetIndex() == Register::ZeroIndex) {
+ // Writing to Register::ZeroIndex is a no op
+ return {};
+ }
+ dest_name = fmt::format("R{}.x", gpr->GetIndex());
+ } else if (const auto abuf = std::get_if<AbufNode>(&*dest)) {
+ const u32 element = abuf->GetElement();
+ const char swizzle = Swizzle(element);
+ switch (const Attribute::Index index = abuf->GetIndex()) {
+ case Attribute::Index::Position:
+ dest_name = fmt::format("result.position.{}", swizzle);
+ break;
+ case Attribute::Index::LayerViewportPointSize:
+ switch (element) {
+ case 0:
+ UNIMPLEMENTED();
+ return {};
+ case 1:
+ case 2:
+ if (!device.HasNvViewportArray2()) {
+ LOG_ERROR(
+ Render_OpenGL,
+ "NV_viewport_array2 is missing. Maxwell gen 2 or better is required.");
+ return {};
+ }
+ dest_name = element == 1 ? "result.layer.x" : "result.viewport.x";
+ break;
+ case 3:
+ dest_name = "result.pointsize.x";
+ break;
+ }
+ break;
+ case Attribute::Index::ClipDistances0123:
+ dest_name = fmt::format("result.clip[{}].x", element);
+ break;
+ case Attribute::Index::ClipDistances4567:
+ dest_name = fmt::format("result.clip[{}].x", element + 4);
+ break;
+ default:
+ if (!IsGenericAttribute(index)) {
+ UNREACHABLE();
+ return {};
+ }
+ dest_name =
+ fmt::format("result.attrib[{}].{}", GetGenericAttributeIndex(index), swizzle);
+ break;
+ }
+ } else if (const auto lmem = std::get_if<LmemNode>(&*dest)) {
+ const std::string address = Visit(lmem->GetAddress());
+ AddLine("SHR.U {}, {}, 2;", address, address);
+ dest_name = fmt::format("lmem[{}].x", address);
+ } else if (const auto smem = std::get_if<SmemNode>(&*dest)) {
+ AddLine("STS.U32 {}, shared_mem[{}];", Visit(src), Visit(smem->GetAddress()));
+ ResetTemporaries();
+ return {};
+ } else if (const auto gmem = std::get_if<GmemNode>(&*dest)) {
+ const std::string temporary = AllocTemporary();
+ AddLine("SUB.U {}, {}, {};", temporary, Visit(gmem->GetRealAddress()),
+ Visit(gmem->GetBaseAddress()));
+ AddLine("STB.U32 {}, {}[{}];", Visit(src), GlobalMemoryName(gmem->GetDescriptor()),
+ temporary);
+ ResetTemporaries();
+ return {};
+ } else {
+ UNREACHABLE();
+ ResetTemporaries();
+ return {};
+ }
+
+ AddLine("MOV.U {}, {};", dest_name, Visit(src));
+ ResetTemporaries();
+ return {};
+}
+
+std::string ARBDecompiler::Select(Operation operation) {
+ const std::string temporary = AllocTemporary();
+ AddLine("CMP.S {}, {}, {}, {};", temporary, Visit(operation[0]), Visit(operation[1]),
+ Visit(operation[2]));
+ return temporary;
+}
+
+std::string ARBDecompiler::FClamp(Operation operation) {
+ // 1.0f in hex, replace with std::bit_cast on C++20
+ static constexpr u32 POSITIVE_ONE = 0x3f800000;
+
+ const std::string temporary = AllocTemporary();
+ const Node& value = operation[0];
+ const Node& low = operation[1];
+ const Node& high = operation[2];
+ const auto imm_low = std::get_if<ImmediateNode>(&*low);
+ const auto imm_high = std::get_if<ImmediateNode>(&*high);
+ if (imm_low && imm_high && imm_low->GetValue() == 0 && imm_high->GetValue() == POSITIVE_ONE) {
+ AddLine("MOV.F32.SAT {}, {};", temporary, Visit(value));
+ } else {
+ AddLine("MIN.F {}, {}, {};", temporary, Visit(value), Visit(high));
+ AddLine("MAX.F {}, {}, {};", temporary, temporary, Visit(low));
+ }
+ return temporary;
+}
+
+std::string ARBDecompiler::FCastHalf0(Operation operation) {
+ const std::string temporary = AllocVectorTemporary();
+ AddLine("UP2H.F {}.x, {};", temporary, Visit(operation[0]));
+ return fmt::format("{}.x", temporary);
+}
+
+std::string ARBDecompiler::FCastHalf1(Operation operation) {
+ const std::string temporary = AllocVectorTemporary();
+ AddLine("UP2H.F {}.y, {};", temporary, Visit(operation[0]));
+ AddLine("MOV {}.x, {}.y;", temporary, temporary);
+ return fmt::format("{}.x", temporary);
+}
+
+std::string ARBDecompiler::FSqrt(Operation operation) {
+ const std::string temporary = AllocTemporary();
+ AddLine("RSQ.F32 {}, {};", temporary, Visit(operation[0]));
+ AddLine("RCP.F32 {}, {};", temporary, temporary);
+ return temporary;
+}
+
+std::string ARBDecompiler::FSwizzleAdd(Operation operation) {
+ LOG_WARNING(Render_OpenGL, "(STUBBED)");
+ const std::string temporary = AllocTemporary();
+ AddLine("ADD.F {}, {}, {};", temporary, Visit(operation[0]), Visit(operation[1]));
+ return temporary;
+}
+
+std::string ARBDecompiler::HAdd2(Operation operation) {
+ const std::string tmp1 = AllocVectorTemporary();
+ const std::string tmp2 = AllocVectorTemporary();
+ AddLine("UP2H.F {}.xy, {};", tmp1, Visit(operation[0]));
+ AddLine("UP2H.F {}.xy, {};", tmp2, Visit(operation[1]));
+ AddLine("ADD.F16 {}, {}, {};", tmp1, tmp1, tmp2);
+ AddLine("PK2H.F {}.x, {};", tmp1, tmp1);
+ return fmt::format("{}.x", tmp1);
+}
+
+std::string ARBDecompiler::HMul2(Operation operation) {
+ const std::string tmp1 = AllocVectorTemporary();
+ const std::string tmp2 = AllocVectorTemporary();
+ AddLine("UP2H.F {}.xy, {};", tmp1, Visit(operation[0]));
+ AddLine("UP2H.F {}.xy, {};", tmp2, Visit(operation[1]));
+ AddLine("MUL.F16 {}, {}, {};", tmp1, tmp1, tmp2);
+ AddLine("PK2H.F {}.x, {};", tmp1, tmp1);
+ return fmt::format("{}.x", tmp1);
+}
+
+std::string ARBDecompiler::HFma2(Operation operation) {
+ const std::string tmp1 = AllocVectorTemporary();
+ const std::string tmp2 = AllocVectorTemporary();
+ const std::string tmp3 = AllocVectorTemporary();
+ AddLine("UP2H.F {}.xy, {};", tmp1, Visit(operation[0]));
+ AddLine("UP2H.F {}.xy, {};", tmp2, Visit(operation[1]));
+ AddLine("UP2H.F {}.xy, {};", tmp3, Visit(operation[2]));
+ AddLine("MAD.F16 {}, {}, {}, {};", tmp1, tmp1, tmp2, tmp3);
+ AddLine("PK2H.F {}.x, {};", tmp1, tmp1);
+ return fmt::format("{}.x", tmp1);
+}
+
+std::string ARBDecompiler::HAbsolute(Operation operation) {
+ const std::string temporary = AllocVectorTemporary();
+ AddLine("UP2H.F {}.xy, {};", temporary, Visit(operation[0]));
+ AddLine("PK2H.F {}.x, |{}|;", temporary, temporary);
+ return fmt::format("{}.x", temporary);
+}
+
+std::string ARBDecompiler::HNegate(Operation operation) {
+ const std::string temporary = AllocVectorTemporary();
+ AddLine("UP2H.F {}.xy, {};", temporary, Visit(operation[0]));
+ AddLine("MOVC.S RC.x, {};", Visit(operation[1]));
+ AddLine("MOV.F {}.x (NE.x), -{}.x;", temporary, temporary);
+ AddLine("MOVC.S RC.x, {};", Visit(operation[2]));
+ AddLine("MOV.F {}.y (NE.x), -{}.y;", temporary, temporary);
+ AddLine("PK2H.F {}.x, {};", temporary, temporary);
+ return fmt::format("{}.x", temporary);
+}
+
+std::string ARBDecompiler::HClamp(Operation operation) {
+ const std::string tmp1 = AllocVectorTemporary();
+ const std::string tmp2 = AllocVectorTemporary();
+ AddLine("UP2H.F {}.xy, {};", tmp1, Visit(operation[0]));
+ AddLine("MOV.U {}.x, {};", tmp2, Visit(operation[1]));
+ AddLine("MOV.U {}.y, {}.x;", tmp2, tmp2);
+ AddLine("MAX.F {}, {}, {};", tmp1, tmp1, tmp2);
+ AddLine("MOV.U {}.x, {};", tmp2, Visit(operation[2]));
+ AddLine("MOV.U {}.y, {}.x;", tmp2, tmp2);
+ AddLine("MIN.F {}, {}, {};", tmp1, tmp1, tmp2);
+ AddLine("PK2H.F {}.x, {};", tmp1, tmp1);
+ return fmt::format("{}.x", tmp1);
+}
+
+std::string ARBDecompiler::HCastFloat(Operation operation) {
+ const std::string temporary = AllocVectorTemporary();
+ AddLine("MOV.F {}.y, {{0, 0, 0, 0}};", temporary);
+ AddLine("MOV.F {}.x, {};", temporary, Visit(operation[0]));
+ AddLine("PK2H.F {}.x, {};", temporary, temporary);
+ return fmt::format("{}.x", temporary);
+}
+
+std::string ARBDecompiler::HUnpack(Operation operation) {
+ const std::string operand = Visit(operation[0]);
+ switch (std::get<Tegra::Shader::HalfType>(operation.GetMeta())) {
+ case Tegra::Shader::HalfType::H0_H1:
+ return operand;
+ case Tegra::Shader::HalfType::F32: {
+ const std::string temporary = AllocVectorTemporary();
+ AddLine("MOV.U {}.x, {};", temporary, operand);
+ AddLine("MOV.U {}.y, {}.x;", temporary, temporary);
+ AddLine("PK2H.F {}.x, {};", temporary, temporary);
+ return fmt::format("{}.x", temporary);
+ }
+ case Tegra::Shader::HalfType::H0_H0: {
+ const std::string temporary = AllocVectorTemporary();
+ AddLine("UP2H.F {}.xy, {};", temporary, operand);
+ AddLine("MOV.U {}.y, {}.x;", temporary, temporary);
+ AddLine("PK2H.F {}.x, {};", temporary, temporary);
+ return fmt::format("{}.x", temporary);
+ }
+ case Tegra::Shader::HalfType::H1_H1: {
+ const std::string temporary = AllocVectorTemporary();
+ AddLine("UP2H.F {}.xy, {};", temporary, operand);
+ AddLine("MOV.U {}.x, {}.y;", temporary, temporary);
+ AddLine("PK2H.F {}.x, {};", temporary, temporary);
+ return fmt::format("{}.x", temporary);
+ }
+ }
+ UNREACHABLE();
+ return "{0, 0, 0, 0}.x";
+}
+
+std::string ARBDecompiler::HMergeF32(Operation operation) {
+ const std::string temporary = AllocVectorTemporary();
+ AddLine("UP2H.F {}.xy, {};", temporary, Visit(operation[0]));
+ return fmt::format("{}.x", temporary);
+}
+
+std::string ARBDecompiler::HMergeH0(Operation operation) {
+ const std::string temporary = AllocVectorTemporary();
+ AddLine("UP2H.F {}.xy, {};", temporary, Visit(operation[0]));
+ AddLine("UP2H.F {}.zw, {};", temporary, Visit(operation[1]));
+ AddLine("MOV.U {}.x, {}.z;", temporary, temporary);
+ AddLine("PK2H.F {}.x, {};", temporary, temporary);
+ return fmt::format("{}.x", temporary);
+}
+
+std::string ARBDecompiler::HMergeH1(Operation operation) {
+ const std::string temporary = AllocVectorTemporary();
+ AddLine("UP2H.F {}.xy, {};", temporary, Visit(operation[0]));
+ AddLine("UP2H.F {}.zw, {};", temporary, Visit(operation[1]));
+ AddLine("MOV.U {}.y, {}.w;", temporary, temporary);
+ AddLine("PK2H.F {}.x, {};", temporary, temporary);
+ return fmt::format("{}.x", temporary);
+}
+
+std::string ARBDecompiler::HPack2(Operation operation) {
+ const std::string temporary = AllocVectorTemporary();
+ AddLine("MOV.U {}.x, {};", temporary, Visit(operation[0]));
+ AddLine("MOV.U {}.y, {};", temporary, Visit(operation[1]));
+ AddLine("PK2H.F {}.x, {};", temporary, temporary);
+ return fmt::format("{}.x", temporary);
+}
+
+std::string ARBDecompiler::LogicalAssign(Operation operation) {
+ const Node& dest = operation[0];
+ const Node& src = operation[1];
+
+ std::string target;
+
+ if (const auto pred = std::get_if<PredicateNode>(&*dest)) {
+ ASSERT_MSG(!pred->IsNegated(), "Negating logical assignment");
+
+ const Tegra::Shader::Pred index = pred->GetIndex();
+ switch (index) {
+ case Tegra::Shader::Pred::NeverExecute:
+ case Tegra::Shader::Pred::UnusedIndex:
+ // Writing to these predicates is a no-op
+ return {};
+ }
+ target = fmt::format("P{}.x", static_cast<u64>(index));
+ } else if (const auto internal_flag = std::get_if<InternalFlagNode>(&*dest)) {
+ const std::size_t index = static_cast<std::size_t>(internal_flag->GetFlag());
+ target = fmt::format("{}.x", INTERNAL_FLAG_NAMES[index]);
+ } else {
+ UNREACHABLE();
+ ResetTemporaries();
+ return {};
+ }
+
+ AddLine("MOV.U {}, {};", target, Visit(src));
+ ResetTemporaries();
+ return {};
+}
+
+std::string ARBDecompiler::LogicalPick2(Operation operation) {
+ const std::string temporary = AllocTemporary();
+ const u32 index = std::get<ImmediateNode>(*operation[1]).GetValue();
+ AddLine("MOV.U {}, {}.{};", temporary, Visit(operation[0]), Swizzle(index));
+ return temporary;
+}
+
+std::string ARBDecompiler::LogicalAnd2(Operation operation) {
+ const std::string temporary = AllocTemporary();
+ const std::string op = Visit(operation[0]);
+ AddLine("AND.U {}, {}.x, {}.y;", temporary, op, op);
+ return temporary;
+}
+
+std::string ARBDecompiler::FloatOrdered(Operation operation) {
+ const std::string temporary = AllocTemporary();
+ AddLine("MOVC.F32 RC.x, {};", Visit(operation[0]));
+ AddLine("MOVC.F32 RC.y, {};", Visit(operation[1]));
+ AddLine("MOV.S {}, -1;", temporary);
+ AddLine("MOV.S {} (NAN.x), 0;", temporary);
+ AddLine("MOV.S {} (NAN.y), 0;", temporary);
+ return temporary;
+}
+
+std::string ARBDecompiler::FloatUnordered(Operation operation) {
+ const std::string temporary = AllocTemporary();
+ AddLine("MOVC.F32 RC.x, {};", Visit(operation[0]));
+ AddLine("MOVC.F32 RC.y, {};", Visit(operation[1]));
+ AddLine("MOV.S {}, 0;", temporary);
+ AddLine("MOV.S {} (NAN.x), -1;", temporary);
+ AddLine("MOV.S {} (NAN.y), -1;", temporary);
+ return temporary;
+}
+
+std::string ARBDecompiler::LogicalAddCarry(Operation operation) {
+ const std::string temporary = AllocTemporary();
+ AddLine("ADDC.U RC, {}, {};", Visit(operation[0]), Visit(operation[1]));
+ AddLine("MOV.S {}, 0;", temporary);
+ AddLine("IF CF.x;");
+ AddLine("MOV.S {}, -1;", temporary);
+ AddLine("ENDIF;");
+ return temporary;
+}
+
+std::string ARBDecompiler::Texture(Operation operation) {
+ const auto& meta = std::get<MetaTexture>(operation.GetMeta());
+ const u32 sampler_id = device.GetBaseBindings(stage).sampler + meta.sampler.index;
+ const auto [temporary, swizzle] = BuildCoords(operation);
+
+ std::string_view opcode = "TEX";
+ std::string extra;
+ if (meta.bias) {
+ ASSERT(!meta.lod);
+ opcode = "TXB";
+
+ if (swizzle < 4) {
+ AddLine("MOV.F {}.w, {};", temporary, Visit(meta.bias));
+ } else {
+ const std::string bias = AllocTemporary();
+ AddLine("MOV.F {}, {};", bias, Visit(meta.bias));
+ extra = fmt::format(" {},", bias);
+ }
+ }
+ if (meta.lod) {
+ ASSERT(!meta.bias);
+ opcode = "TXL";
+
+ if (swizzle < 4) {
+ AddLine("MOV.F {}.w, {};", temporary, Visit(meta.lod));
+ } else {
+ const std::string lod = AllocTemporary();
+ AddLine("MOV.F {}, {};", lod, Visit(meta.lod));
+ extra = fmt::format(" {},", lod);
+ }
+ }
+
+ AddLine("{}.F {}, {},{} texture[{}], {}{};", opcode, temporary, temporary, extra, sampler_id,
+ TextureType(meta), BuildAoffi(operation));
+ AddLine("MOV.U {}.x, {}.{};", temporary, temporary, Swizzle(meta.element));
+ return fmt::format("{}.x", temporary);
+}
+
+std::string ARBDecompiler::TextureGather(Operation operation) {
+ const auto& meta = std::get<MetaTexture>(operation.GetMeta());
+ const u32 sampler_id = device.GetBaseBindings(stage).sampler + meta.sampler.index;
+ const auto [temporary, swizzle] = BuildCoords(operation);
+
+ std::string comp;
+ if (!meta.sampler.is_shadow) {
+ const auto& immediate = std::get<ImmediateNode>(*meta.component);
+ comp = fmt::format(".{}", Swizzle(immediate.GetValue()));
+ }
+
+ AddLine("TXG.F {}, {}, texture[{}]{}, {}{};", temporary, temporary, sampler_id, comp,
+ TextureType(meta), BuildAoffi(operation));
+ AddLine("MOV.U {}.x, {}.{};", temporary, temporary, Swizzle(meta.element));
+ return fmt::format("{}.x", temporary);
+}
+
+std::string ARBDecompiler::TextureQueryDimensions(Operation operation) {
+ const auto& meta = std::get<MetaTexture>(operation.GetMeta());
+ const std::string temporary = AllocVectorTemporary();
+ const u32 sampler_id = device.GetBaseBindings(stage).sampler + meta.sampler.index;
+
+ ASSERT(!meta.sampler.is_array);
+
+ const std::string lod = operation.GetOperandsCount() > 0 ? Visit(operation[0]) : "0";
+ AddLine("TXQ {}, {}, texture[{}], {};", temporary, lod, sampler_id, TextureType(meta));
+ AddLine("MOV.U {}.x, {}.{};", temporary, temporary, Swizzle(meta.element));
+ return fmt::format("{}.x", temporary);
+}
+
+std::string ARBDecompiler::TextureQueryLod(Operation operation) {
+ const auto& meta = std::get<MetaTexture>(operation.GetMeta());
+ const std::string temporary = AllocVectorTemporary();
+ const u32 sampler_id = device.GetBaseBindings(stage).sampler + meta.sampler.index;
+
+ ASSERT(!meta.sampler.is_array);
+
+ const std::size_t count = operation.GetOperandsCount();
+ for (std::size_t i = 0; i < count; ++i) {
+ AddLine("MOV.F {}.{}, {};", temporary, Swizzle(i), Visit(operation[i]));
+ }
+ AddLine("LOD.F {}, {}, texture[{}], {};", temporary, temporary, sampler_id, TextureType(meta));
+ AddLine("MUL.F32 {}, {}, {{256, 256, 0, 0}};", temporary, temporary);
+ AddLine("TRUNC.S {}, {};", temporary, temporary);
+ AddLine("MOV.U {}.x, {}.{};", temporary, temporary, Swizzle(meta.element));
+ return fmt::format("{}.x", temporary);
+}
+
+std::string ARBDecompiler::TexelFetch(Operation operation) {
+ const auto& meta = std::get<MetaTexture>(operation.GetMeta());
+ const u32 sampler_id = device.GetBaseBindings(stage).sampler + meta.sampler.index;
+ const auto [temporary, swizzle] = BuildCoords(operation);
+
+ if (!meta.sampler.is_buffer) {
+ ASSERT(swizzle < 4);
+ AddLine("MOV.F {}.w, {};", temporary, Visit(meta.lod));
+ }
+ AddLine("TXF.F {}, {}, texture[{}], {}{};", temporary, temporary, sampler_id, TextureType(meta),
+ BuildAoffi(operation));
+ AddLine("MOV.U {}.x, {}.{};", temporary, temporary, Swizzle(meta.element));
+ return fmt::format("{}.x", temporary);
+}
+
+std::string ARBDecompiler::TextureGradient(Operation operation) {
+ const auto& meta = std::get<MetaTexture>(operation.GetMeta());
+ const u32 sampler_id = device.GetBaseBindings(stage).sampler + meta.sampler.index;
+ const std::string ddx = AllocVectorTemporary();
+ const std::string ddy = AllocVectorTemporary();
+ const std::string coord = BuildCoords(operation).first;
+
+ const std::size_t num_components = meta.derivates.size() / 2;
+ for (std::size_t index = 0; index < num_components; ++index) {
+ const char swizzle = Swizzle(index);
+ AddLine("MOV.F {}.{}, {};", ddx, swizzle, Visit(meta.derivates[index * 2]));
+ AddLine("MOV.F {}.{}, {};", ddy, swizzle, Visit(meta.derivates[index * 2 + 1]));
+ }
+
+ const std::string_view result = coord;
+ AddLine("TXD.F {}, {}, {}, {}, texture[{}], {}{};", result, coord, ddx, ddy, sampler_id,
+ TextureType(meta), BuildAoffi(operation));
+ AddLine("MOV.F {}.x, {}.{};", result, result, Swizzle(meta.element));
+ return fmt::format("{}.x", result);
+}
+
+std::string ARBDecompiler::ImageLoad(Operation operation) {
+ const auto& meta = std::get<MetaImage>(operation.GetMeta());
+ const u32 image_id = device.GetBaseBindings(stage).image + meta.image.index;
+ const std::size_t count = operation.GetOperandsCount();
+ const std::string_view type = ImageType(meta.image.type);
+
+ const std::string temporary = AllocVectorTemporary();
+ for (std::size_t i = 0; i < count; ++i) {
+ AddLine("MOV.S {}.{}, {};", temporary, Swizzle(i), Visit(operation[i]));
+ }
+ AddLine("LOADIM.F {}, {}, image[{}], {};", temporary, temporary, image_id, type);
+ AddLine("MOV.F {}.x, {}.{};", temporary, temporary, Swizzle(meta.element));
+ return fmt::format("{}.x", temporary);
+}
+
+std::string ARBDecompiler::ImageStore(Operation operation) {
+ const auto& meta = std::get<MetaImage>(operation.GetMeta());
+ const u32 image_id = device.GetBaseBindings(stage).image + meta.image.index;
+ const std::size_t num_coords = operation.GetOperandsCount();
+ const std::size_t num_values = meta.values.size();
+ const std::string_view type = ImageType(meta.image.type);
+
+ const std::string coord = AllocVectorTemporary();
+ const std::string value = AllocVectorTemporary();
+ for (std::size_t i = 0; i < num_coords; ++i) {
+ AddLine("MOV.S {}.{}, {};", coord, Swizzle(i), Visit(operation[i]));
+ }
+ for (std::size_t i = 0; i < num_values; ++i) {
+ AddLine("MOV.F {}.{}, {};", value, Swizzle(i), Visit(meta.values[i]));
+ }
+ AddLine("STOREIM.F image[{}], {}, {}, {};", image_id, value, coord, type);
+ return {};
+}
+
+std::string ARBDecompiler::Branch(Operation operation) {
+ const auto target = std::get<ImmediateNode>(*operation[0]);
+ AddLine("MOV.U PC.x, {};", target.GetValue());
+ AddLine("CONT;");
+ return {};
+}
+
+std::string ARBDecompiler::BranchIndirect(Operation operation) {
+ AddLine("MOV.U PC.x, {};", Visit(operation[0]));
+ AddLine("CONT;");
+ return {};
+}
+
+std::string ARBDecompiler::PushFlowStack(Operation operation) {
+ const auto stack = std::get<MetaStackClass>(operation.GetMeta());
+ const u32 target = std::get<ImmediateNode>(*operation[0]).GetValue();
+ const std::string_view stack_name = StackName(stack);
+ AddLine("MOV.U {}[{}_TOP.x].x, {};", stack_name, stack_name, target);
+ AddLine("ADD.S {}_TOP.x, {}_TOP.x, 1;", stack_name, stack_name);
+ return {};
+}
+
+std::string ARBDecompiler::PopFlowStack(Operation operation) {
+ const auto stack = std::get<MetaStackClass>(operation.GetMeta());
+ const std::string_view stack_name = StackName(stack);
+ AddLine("SUB.S {}_TOP.x, {}_TOP.x, 1;", stack_name, stack_name);
+ AddLine("MOV.U PC.x, {}[{}_TOP.x].x;", stack_name, stack_name);
+ AddLine("CONT;");
+ return {};
+}
+
+std::string ARBDecompiler::Exit(Operation) {
+ Exit();
+ return {};
+}
+
+std::string ARBDecompiler::Discard(Operation) {
+ AddLine("KIL TR;");
+ return {};
+}
+
+std::string ARBDecompiler::EmitVertex(Operation) {
+ AddLine("EMIT;");
+ return {};
+}
+
+std::string ARBDecompiler::EndPrimitive(Operation) {
+ AddLine("ENDPRIM;");
+ return {};
+}
+
+std::string ARBDecompiler::InvocationId(Operation) {
+ return "primitive.invocation";
+}
+
+std::string ARBDecompiler::YNegate(Operation) {
+ LOG_WARNING(Render_OpenGL, "(STUBBED)");
+ const std::string temporary = AllocTemporary();
+ AddLine("MOV.F {}, 1;", temporary);
+ return temporary;
+}
+
+std::string ARBDecompiler::ThreadId(Operation) {
+ return fmt::format("{}.threadid", StageInputName(stage));
+}
+
+std::string ARBDecompiler::ShuffleIndexed(Operation operation) {
+ if (!device.HasWarpIntrinsics()) {
+ LOG_ERROR(Render_OpenGL,
+ "NV_shader_thread_shuffle is missing. Kepler or better is required.");
+ return Visit(operation[0]);
+ }
+ const std::string temporary = AllocVectorTemporary();
+ AddLine("SHFIDX.U {}, {}, {}, {{31, 0, 0, 0}};", temporary, Visit(operation[0]),
+ Visit(operation[1]));
+ AddLine("MOV.U {}.x, {}.y;", temporary, temporary);
+ return fmt::format("{}.x", temporary);
+}
+
+std::string ARBDecompiler::Barrier(Operation) {
+ if (!ir.IsDecompiled()) {
+ LOG_ERROR(Render_OpenGL, "BAR used but shader is not decompiled");
+ return {};
+ }
+ AddLine("BAR;");
+ return {};
+}
+
+std::string ARBDecompiler::MemoryBarrierGroup(Operation) {
+ AddLine("MEMBAR.CTA;");
+ return {};
+}
+
+std::string ARBDecompiler::MemoryBarrierGlobal(Operation) {
+ AddLine("MEMBAR;");
+ return {};
+}
+
+} // Anonymous namespace
+
+std::string DecompileAssemblyShader(const Device& device, const VideoCommon::Shader::ShaderIR& ir,
+ const VideoCommon::Shader::Registry& registry,
+ Tegra::Engines::ShaderType stage, std::string_view identifier) {
+ return ARBDecompiler(device, ir, registry, stage, identifier).Code();
+}
+
+} // namespace OpenGL
diff --git a/src/video_core/renderer_opengl/gl_arb_decompiler.h b/src/video_core/renderer_opengl/gl_arb_decompiler.h
new file mode 100644
index 0000000000..6afc87220e
--- /dev/null
+++ b/src/video_core/renderer_opengl/gl_arb_decompiler.h
@@ -0,0 +1,29 @@
+// Copyright 2020 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <string>
+#include <string_view>
+
+#include "common/common_types.h"
+
+namespace Tegra::Engines {
+enum class ShaderType : u32;
+}
+
+namespace VideoCommon::Shader {
+class ShaderIR;
+class Registry;
+} // namespace VideoCommon::Shader
+
+namespace OpenGL {
+
+class Device;
+
+std::string DecompileAssemblyShader(const Device& device, const VideoCommon::Shader::ShaderIR& ir,
+ const VideoCommon::Shader::Registry& registry,
+ Tegra::Engines::ShaderType stage, std::string_view identifier);
+
+} // namespace OpenGL
diff --git a/src/video_core/renderer_opengl/gl_device.cpp b/src/video_core/renderer_opengl/gl_device.cpp
index 890fc6c638..e245e27ecf 100644
--- a/src/video_core/renderer_opengl/gl_device.cpp
+++ b/src/video_core/renderer_opengl/gl_device.cpp
@@ -213,6 +213,7 @@ Device::Device()
has_component_indexing_bug = is_amd;
has_precise_bug = TestPreciseBug();
has_fast_buffer_sub_data = is_nvidia && !disable_fast_buffer_sub_data;
+ has_nv_viewport_array2 = GLAD_GL_NV_viewport_array2;
use_assembly_shaders = Settings::values.use_assembly_shaders && GLAD_GL_NV_gpu_program5 &&
GLAD_GL_NV_compute_program5 && GLAD_GL_NV_transform_feedback &&
GLAD_GL_NV_transform_feedback2;
diff --git a/src/video_core/renderer_opengl/gl_device.h b/src/video_core/renderer_opengl/gl_device.h
index 98cca02543..145347943a 100644
--- a/src/video_core/renderer_opengl/gl_device.h
+++ b/src/video_core/renderer_opengl/gl_device.h
@@ -88,6 +88,10 @@ public:
return has_fast_buffer_sub_data;
}
+ bool HasNvViewportArray2() const {
+ return has_nv_viewport_array2;
+ }
+
bool UseAssemblyShaders() const {
return use_assembly_shaders;
}
@@ -111,6 +115,7 @@ private:
bool has_component_indexing_bug{};
bool has_precise_bug{};
bool has_fast_buffer_sub_data{};
+ bool has_nv_viewport_array2{};
bool use_assembly_shaders{};
};
diff --git a/src/video_core/renderer_opengl/gl_shader_cache.cpp b/src/video_core/renderer_opengl/gl_shader_cache.cpp
index a991ca64a7..f539a05e14 100644
--- a/src/video_core/renderer_opengl/gl_shader_cache.cpp
+++ b/src/video_core/renderer_opengl/gl_shader_cache.cpp
@@ -20,6 +20,7 @@
#include "video_core/engines/maxwell_3d.h"
#include "video_core/engines/shader_type.h"
#include "video_core/memory_manager.h"
+#include "video_core/renderer_opengl/gl_arb_decompiler.h"
#include "video_core/renderer_opengl/gl_rasterizer.h"
#include "video_core/renderer_opengl/gl_shader_cache.h"
#include "video_core/renderer_opengl/gl_shader_decompiler.h"
@@ -147,7 +148,8 @@ ProgramSharedPtr BuildShader(const Device& device, ShaderType shader_type, u64 u
auto program = std::make_shared<ProgramHandle>();
if (device.UseAssemblyShaders()) {
- const std::string arb = "Not implemented";
+ const std::string arb =
+ DecompileAssemblyShader(device, ir, registry, shader_type, shader_id);
GLuint& arb_prog = program->assembly_program.handle;
--
cgit v1.2.3-70-g09d2