diff --git a/.gitmodules b/.gitmodules
index 26b4e5272..3a49c4874 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -43,3 +43,6 @@
[submodule "externals/zstd"]
path = externals/zstd
url = https://github.com/facebook/zstd
+[submodule "sirit"]
+ path = externals/sirit
+ url = https://github.com/ReinUsesLisp/sirit
diff --git a/externals/CMakeLists.txt b/externals/CMakeLists.txt
index aa3319eb1..3f8b6cda8 100644
--- a/externals/CMakeLists.txt
+++ b/externals/CMakeLists.txt
@@ -72,6 +72,11 @@ if (USE_DISCORD_PRESENCE)
target_include_directories(discord-rpc INTERFACE ./discord-rpc/include)
endif()
+# Sirit
+if (ENABLE_VULKAN)
+ add_subdirectory(sirit)
+endif()
+
if (ENABLE_WEB_SERVICE)
# LibreSSL
set(LIBRESSL_SKIP_INSTALL ON CACHE BOOL "")
diff --git a/externals/sirit b/externals/sirit
new file mode 160000
index 000000000..f7c4b07a7
--- /dev/null
+++ b/externals/sirit
@@ -0,0 +1 @@
+Subproject commit f7c4b07a7e14edb1dcd93bc9879c823423705c2e
diff --git a/src/video_core/CMakeLists.txt b/src/video_core/CMakeLists.txt
index 5c8ca429e..114bed20d 100644
--- a/src/video_core/CMakeLists.txt
+++ b/src/video_core/CMakeLists.txt
@@ -129,12 +129,14 @@ if (ENABLE_VULKAN)
renderer_vulkan/vk_sampler_cache.h
renderer_vulkan/vk_scheduler.cpp
renderer_vulkan/vk_scheduler.h
+ renderer_vulkan/vk_shader_decompiler.cpp
+ renderer_vulkan/vk_shader_decompiler.h
renderer_vulkan/vk_stream_buffer.cpp
renderer_vulkan/vk_stream_buffer.h
renderer_vulkan/vk_swapchain.cpp
renderer_vulkan/vk_swapchain.h)
- target_include_directories(video_core PRIVATE ../../externals/Vulkan-Headers/include)
+ target_include_directories(video_core PRIVATE sirit ../../externals/Vulkan-Headers/include)
target_compile_definitions(video_core PRIVATE HAS_VULKAN)
endif()
@@ -142,3 +144,6 @@ create_target_directory_groups(video_core)
target_link_libraries(video_core PUBLIC common core)
target_link_libraries(video_core PRIVATE glad)
+if (ENABLE_VULKAN)
+ target_link_libraries(video_core PRIVATE sirit)
+endif()
diff --git a/src/video_core/renderer_vulkan/vk_shader_decompiler.cpp b/src/video_core/renderer_vulkan/vk_shader_decompiler.cpp
new file mode 100644
index 000000000..e0a6f5e87
--- /dev/null
+++ b/src/video_core/renderer_vulkan/vk_shader_decompiler.cpp
@@ -0,0 +1,1379 @@
+// Copyright 2019 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <functional>
+#include <map>
+#include <set>
+
+#include <fmt/format.h>
+
+#include <sirit/sirit.h>
+
+#include "common/alignment.h"
+#include "common/assert.h"
+#include "common/common_types.h"
+#include "common/logging/log.h"
+#include "video_core/engines/maxwell_3d.h"
+#include "video_core/engines/shader_bytecode.h"
+#include "video_core/engines/shader_header.h"
+#include "video_core/renderer_vulkan/vk_shader_decompiler.h"
+#include "video_core/shader/shader_ir.h"
+
+namespace Vulkan::VKShader {
+
+using Sirit::Id;
+using Tegra::Shader::Attribute;
+using Tegra::Shader::AttributeUse;
+using Tegra::Shader::Register;
+using namespace VideoCommon::Shader;
+
+using Maxwell = Tegra::Engines::Maxwell3D::Regs;
+using ShaderStage = Tegra::Engines::Maxwell3D::Regs::ShaderStage;
+using Operation = const OperationNode&;
+
+// TODO(Rodrigo): Use rasterizer's value
+constexpr u32 MAX_CONSTBUFFER_ELEMENTS = 0x1000;
+constexpr u32 STAGE_BINDING_STRIDE = 0x100;
+
+enum class Type { Bool, Bool2, Float, Int, Uint, HalfFloat };
+
+struct SamplerImage {
+ Id image_type;
+ Id sampled_image_type;
+ Id sampler;
+};
+
+namespace {
+
+spv::Dim GetSamplerDim(const Sampler& sampler) {
+ switch (sampler.GetType()) {
+ case Tegra::Shader::TextureType::Texture1D:
+ return spv::Dim::Dim1D;
+ case Tegra::Shader::TextureType::Texture2D:
+ return spv::Dim::Dim2D;
+ case Tegra::Shader::TextureType::Texture3D:
+ return spv::Dim::Dim3D;
+ case Tegra::Shader::TextureType::TextureCube:
+ return spv::Dim::Cube;
+ default:
+ UNIMPLEMENTED_MSG("Unimplemented sampler type={}", static_cast<u32>(sampler.GetType()));
+ return spv::Dim::Dim2D;
+ }
+}
+
+/// Returns true if an attribute index is one of the 32 generic attributes
+constexpr bool IsGenericAttribute(Attribute::Index attribute) {
+ return attribute >= Attribute::Index::Attribute_0 &&
+ attribute <= Attribute::Index::Attribute_31;
+}
+
+/// Returns the location of a generic attribute
+constexpr u32 GetGenericAttributeLocation(Attribute::Index attribute) {
+ ASSERT(IsGenericAttribute(attribute));
+ return static_cast<u32>(attribute) - static_cast<u32>(Attribute::Index::Attribute_0);
+}
+
+/// Returns true if an object has to be treated as precise
+bool IsPrecise(Operation operand) {
+ const auto& meta = operand.GetMeta();
+
+ if (std::holds_alternative<MetaArithmetic>(meta)) {
+ return std::get<MetaArithmetic>(meta).precise;
+ }
+ if (std::holds_alternative<MetaHalfArithmetic>(meta)) {
+ return std::get<MetaHalfArithmetic>(meta).precise;
+ }
+ return false;
+}
+
+} // namespace
+
+class SPIRVDecompiler : public Sirit::Module {
+public:
+ explicit SPIRVDecompiler(const ShaderIR& ir, ShaderStage stage)
+ : Module(0x00010300), ir{ir}, stage{stage}, header{ir.GetHeader()} {
+ AddCapability(spv::Capability::Shader);
+ AddExtension("SPV_KHR_storage_buffer_storage_class");
+ AddExtension("SPV_KHR_variable_pointers");
+ }
+
+ void Decompile() {
+ AllocateBindings();
+ AllocateLabels();
+
+ DeclareVertex();
+ DeclareGeometry();
+ DeclareFragment();
+ DeclareRegisters();
+ DeclarePredicates();
+ DeclareLocalMemory();
+ DeclareInternalFlags();
+ DeclareInputAttributes();
+ DeclareOutputAttributes();
+ DeclareConstantBuffers();
+ DeclareGlobalBuffers();
+ DeclareSamplers();
+
+ execute_function =
+ Emit(OpFunction(t_void, spv::FunctionControlMask::Inline, TypeFunction(t_void)));
+ Emit(OpLabel());
+
+ const u32 first_address = ir.GetBasicBlocks().begin()->first;
+ const Id loop_label = OpLabel("loop");
+ const Id merge_label = OpLabel("merge");
+ const Id dummy_label = OpLabel();
+ const Id jump_label = OpLabel();
+ continue_label = OpLabel("continue");
+
+ std::vector<Sirit::Literal> literals;
+ std::vector<Id> branch_labels;
+ for (const auto& pair : labels) {
+ const auto [literal, label] = pair;
+ literals.push_back(literal);
+ branch_labels.push_back(label);
+ }
+
+ // TODO(Rodrigo): Figure out the actual depth of the flow stack, for now it seems unlikely
+ // that shaders will use 20 nested SSYs and PBKs.
+ constexpr u32 FLOW_STACK_SIZE = 20;
+ const Id flow_stack_type = TypeArray(t_uint, Constant(t_uint, FLOW_STACK_SIZE));
+ jmp_to = Emit(OpVariable(TypePointer(spv::StorageClass::Function, t_uint),
+ spv::StorageClass::Function, Constant(t_uint, first_address)));
+ flow_stack = Emit(OpVariable(TypePointer(spv::StorageClass::Function, flow_stack_type),
+ spv::StorageClass::Function, ConstantNull(flow_stack_type)));
+ flow_stack_top =
+ Emit(OpVariable(t_func_uint, spv::StorageClass::Function, Constant(t_uint, 0)));
+
+ Name(jmp_to, "jmp_to");
+ Name(flow_stack, "flow_stack");
+ Name(flow_stack_top, "flow_stack_top");
+
+ Emit(OpBranch(loop_label));
+ Emit(loop_label);
+ Emit(OpLoopMerge(merge_label, continue_label, spv::LoopControlMask::Unroll));
+ Emit(OpBranch(dummy_label));
+
+ Emit(dummy_label);
+ const Id default_branch = OpLabel();
+ const Id jmp_to_load = Emit(OpLoad(t_uint, jmp_to));
+ Emit(OpSelectionMerge(jump_label, spv::SelectionControlMask::MaskNone));
+ Emit(OpSwitch(jmp_to_load, default_branch, literals, branch_labels));
+
+ Emit(default_branch);
+ Emit(OpReturn());
+
+ for (const auto& pair : ir.GetBasicBlocks()) {
+ const auto& [address, bb] = pair;
+ Emit(labels.at(address));
+
+ VisitBasicBlock(bb);
+
+ const auto next_it = labels.lower_bound(address + 1);
+ const Id next_label = next_it != labels.end() ? next_it->second : default_branch;
+ Emit(OpBranch(next_label));
+ }
+
+ Emit(jump_label);
+ Emit(OpBranch(continue_label));
+ Emit(continue_label);
+ Emit(OpBranch(loop_label));
+ Emit(merge_label);
+ Emit(OpReturn());
+ Emit(OpFunctionEnd());
+ }
+
+ ShaderEntries GetShaderEntries() const {
+ ShaderEntries entries;
+ entries.const_buffers_base_binding = const_buffers_base_binding;
+ entries.global_buffers_base_binding = global_buffers_base_binding;
+ entries.samplers_base_binding = samplers_base_binding;
+ for (const auto& cbuf : ir.GetConstantBuffers()) {
+ entries.const_buffers.emplace_back(cbuf.second, cbuf.first);
+ }
+ for (const auto& gmem : ir.GetGlobalMemoryBases()) {
+ entries.global_buffers.emplace_back(gmem.cbuf_index, gmem.cbuf_offset);
+ }
+ for (const auto& sampler : ir.GetSamplers()) {
+ entries.samplers.emplace_back(sampler);
+ }
+ for (const auto& attr : ir.GetInputAttributes()) {
+ entries.attributes.insert(GetGenericAttributeLocation(attr.first));
+ }
+ entries.clip_distances = ir.GetClipDistances();
+ entries.shader_length = ir.GetLength();
+ entries.entry_function = execute_function;
+ entries.interfaces = interfaces;
+ return entries;
+ }
+
+private:
+ using OperationDecompilerFn = Id (SPIRVDecompiler::*)(Operation);
+ using OperationDecompilersArray =
+ std::array<OperationDecompilerFn, static_cast<std::size_t>(OperationCode::Amount)>;
+
+ static constexpr auto INTERNAL_FLAGS_COUNT = static_cast<std::size_t>(InternalFlag::Amount);
+ static constexpr u32 CBUF_STRIDE = 16;
+
+ void AllocateBindings() {
+ const u32 binding_base = static_cast<u32>(stage) * STAGE_BINDING_STRIDE;
+ u32 binding_iterator = binding_base;
+
+ const auto Allocate = [&binding_iterator](std::size_t count) {
+ const u32 current_binding = binding_iterator;
+ binding_iterator += static_cast<u32>(count);
+ return current_binding;
+ };
+ const_buffers_base_binding = Allocate(ir.GetConstantBuffers().size());
+ global_buffers_base_binding = Allocate(ir.GetGlobalMemoryBases().size());
+ samplers_base_binding = Allocate(ir.GetSamplers().size());
+
+ ASSERT_MSG(binding_iterator - binding_base < STAGE_BINDING_STRIDE,
+ "Stage binding stride is too small");
+ }
+
+ void AllocateLabels() {
+ for (const auto& pair : ir.GetBasicBlocks()) {
+ const u32 address = pair.first;
+ labels.emplace(address, OpLabel(fmt::format("label_0x{:x}", address)));
+ }
+ }
+
+ void DeclareVertex() {
+ if (stage != ShaderStage::Vertex)
+ return;
+
+ DeclareVertexRedeclarations();
+ }
+
+ void DeclareGeometry() {
+ if (stage != ShaderStage::Geometry)
+ return;
+
+ UNIMPLEMENTED();
+ }
+
+ void DeclareFragment() {
+ if (stage != ShaderStage::Fragment)
+ return;
+
+ for (u32 rt = 0; rt < static_cast<u32>(frag_colors.size()); ++rt) {
+ if (!IsRenderTargetUsed(rt)) {
+ continue;
+ }
+
+ const Id id = AddGlobalVariable(OpVariable(t_out_float4, spv::StorageClass::Output));
+ Name(id, fmt::format("frag_color{}", rt));
+ Decorate(id, spv::Decoration::Location, rt);
+
+ frag_colors[rt] = id;
+ interfaces.push_back(id);
+ }
+
+ if (header.ps.omap.depth) {
+ frag_depth = AddGlobalVariable(OpVariable(t_out_float, spv::StorageClass::Output));
+ Name(frag_depth, "frag_depth");
+ Decorate(frag_depth, spv::Decoration::BuiltIn,
+ static_cast<u32>(spv::BuiltIn::FragDepth));
+
+ interfaces.push_back(frag_depth);
+ }
+
+ frag_coord = DeclareBuiltIn(spv::BuiltIn::FragCoord, spv::StorageClass::Input, t_in_float4,
+ "frag_coord");
+ front_facing = DeclareBuiltIn(spv::BuiltIn::FrontFacing, spv::StorageClass::Input,
+ t_in_bool, "front_facing");
+ }
+
+ void DeclareRegisters() {
+ for (const u32 gpr : ir.GetRegisters()) {
+ const Id id = OpVariable(t_prv_float, spv::StorageClass::Private, v_float_zero);
+ Name(id, fmt::format("gpr_{}", gpr));
+ registers.emplace(gpr, AddGlobalVariable(id));
+ }
+ }
+
+ void DeclarePredicates() {
+ for (const auto pred : ir.GetPredicates()) {
+ const Id id = OpVariable(t_prv_bool, spv::StorageClass::Private, v_false);
+ Name(id, fmt::format("pred_{}", static_cast<u32>(pred)));
+ predicates.emplace(pred, AddGlobalVariable(id));
+ }
+ }
+
+ void DeclareLocalMemory() {
+ if (const u64 local_memory_size = header.GetLocalMemorySize(); local_memory_size > 0) {
+ const auto element_count = static_cast<u32>(Common::AlignUp(local_memory_size, 4) / 4);
+ const Id type_array = TypeArray(t_float, Constant(t_uint, element_count));
+ const Id type_pointer = TypePointer(spv::StorageClass::Private, type_array);
+ Name(type_pointer, "LocalMemory");
+
+ local_memory =
+ OpVariable(type_pointer, spv::StorageClass::Private, ConstantNull(type_array));
+ AddGlobalVariable(Name(local_memory, "local_memory"));
+ }
+ }
+
+ void DeclareInternalFlags() {
+ constexpr std::array<const char*, INTERNAL_FLAGS_COUNT> names = {"zero", "sign", "carry",
+ "overflow"};
+ for (std::size_t flag = 0; flag < INTERNAL_FLAGS_COUNT; ++flag) {
+ const auto flag_code = static_cast<InternalFlag>(flag);
+ const Id id = OpVariable(t_prv_bool, spv::StorageClass::Private, v_false);
+ internal_flags[flag] = AddGlobalVariable(Name(id, names[flag]));
+ }
+ }
+
+ void DeclareInputAttributes() {
+ for (const auto element : ir.GetInputAttributes()) {
+ const Attribute::Index index = element.first;
+ if (!IsGenericAttribute(index)) {
+ continue;
+ }
+
+ UNIMPLEMENTED_IF(stage == ShaderStage::Geometry);
+
+ const u32 location = GetGenericAttributeLocation(index);
+ const Id id = OpVariable(t_in_float4, spv::StorageClass::Input);
+ Name(AddGlobalVariable(id), fmt::format("in_attr{}", location));
+ input_attributes.emplace(index, id);
+ interfaces.push_back(id);
+
+ Decorate(id, spv::Decoration::Location, location);
+
+ if (stage != ShaderStage::Fragment) {
+ continue;
+ }
+ switch (header.ps.GetAttributeUse(location)) {
+ case AttributeUse::Constant:
+ Decorate(id, spv::Decoration::Flat);
+ break;
+ case AttributeUse::ScreenLinear:
+ Decorate(id, spv::Decoration::NoPerspective);
+ break;
+ case AttributeUse::Perspective:
+ // Default
+ break;
+ default:
+ UNREACHABLE_MSG("Unused attribute being fetched");
+ }
+ }
+ }
+
+ void DeclareOutputAttributes() {
+ for (const auto index : ir.GetOutputAttributes()) {
+ if (!IsGenericAttribute(index)) {
+ continue;
+ }
+ const auto location = GetGenericAttributeLocation(index);
+ const Id id = OpVariable(t_out_float4, spv::StorageClass::Output);
+ Name(AddGlobalVariable(id), fmt::format("out_attr{}", location));
+ output_attributes.emplace(index, id);
+ interfaces.push_back(id);
+
+ Decorate(id, spv::Decoration::Location, location);
+ }
+ }
+
+ void DeclareConstantBuffers() {
+ u32 binding = const_buffers_base_binding;
+ for (const auto& entry : ir.GetConstantBuffers()) {
+ const auto [index, size] = entry;
+ const Id id = OpVariable(t_cbuf_ubo, spv::StorageClass::Uniform);
+ AddGlobalVariable(Name(id, fmt::format("cbuf_{}", index)));
+
+ Decorate(id, spv::Decoration::Binding, binding++);
+ Decorate(id, spv::Decoration::DescriptorSet, DESCRIPTOR_SET);
+ constant_buffers.emplace(index, id);
+ }
+ }
+
+ void DeclareGlobalBuffers() {
+ u32 binding = global_buffers_base_binding;
+ for (const auto& entry : ir.GetGlobalMemoryBases()) {
+ const Id id = OpVariable(t_gmem_ssbo, spv::StorageClass::StorageBuffer);
+ AddGlobalVariable(
+ Name(id, fmt::format("gmem_{}_{}", entry.cbuf_index, entry.cbuf_offset)));
+
+ Decorate(id, spv::Decoration::Binding, binding++);
+ Decorate(id, spv::Decoration::DescriptorSet, DESCRIPTOR_SET);
+ global_buffers.emplace(entry, id);
+ }
+ }
+
+ void DeclareSamplers() {
+ u32 binding = samplers_base_binding;
+ for (const auto& sampler : ir.GetSamplers()) {
+ const auto dim = GetSamplerDim(sampler);
+ const int depth = sampler.IsShadow() ? 1 : 0;
+ const int arrayed = sampler.IsArray() ? 1 : 0;
+ // TODO(Rodrigo): Sampled 1 indicates that the image will be used with a sampler. When
+ // SULD and SUST instructions are implemented, replace this value.
+ const int sampled = 1;
+ const Id image_type =
+ TypeImage(t_float, dim, depth, arrayed, false, sampled, spv::ImageFormat::Unknown);
+ const Id sampled_image_type = TypeSampledImage(image_type);
+ const Id pointer_type =
+ TypePointer(spv::StorageClass::UniformConstant, sampled_image_type);
+ const Id id = OpVariable(pointer_type, spv::StorageClass::UniformConstant);
+ AddGlobalVariable(Name(id, fmt::format("sampler_{}", sampler.GetIndex())));
+
+ sampler_images.insert(
+ {static_cast<u32>(sampler.GetIndex()), {image_type, sampled_image_type, id}});
+
+ Decorate(id, spv::Decoration::Binding, binding++);
+ Decorate(id, spv::Decoration::DescriptorSet, DESCRIPTOR_SET);
+ }
+ }
+
+ void DeclareVertexRedeclarations() {
+ vertex_index = DeclareBuiltIn(spv::BuiltIn::VertexIndex, spv::StorageClass::Input,
+ t_in_uint, "vertex_index");
+ instance_index = DeclareBuiltIn(spv::BuiltIn::InstanceIndex, spv::StorageClass::Input,
+ t_in_uint, "instance_index");
+
+ bool is_point_size_declared = false;
+ bool is_clip_distances_declared = false;
+ for (const auto index : ir.GetOutputAttributes()) {
+ if (index == Attribute::Index::PointSize) {
+ is_point_size_declared = true;
+ } else if (index == Attribute::Index::ClipDistances0123 ||
+ index == Attribute::Index::ClipDistances4567) {
+ is_clip_distances_declared = true;
+ }
+ }
+
+ std::vector<Id> members;
+ members.push_back(t_float4);
+ if (is_point_size_declared) {
+ members.push_back(t_float);
+ }
+ if (is_clip_distances_declared) {
+ members.push_back(TypeArray(t_float, Constant(t_uint, 8)));
+ }
+
+ const Id gl_per_vertex_struct = Name(TypeStruct(members), "PerVertex");
+ Decorate(gl_per_vertex_struct, spv::Decoration::Block);
+
+ u32 declaration_index = 0;
+ const auto MemberDecorateBuiltIn = [&](spv::BuiltIn builtin, std::string name,
+ bool condition) {
+ if (!condition)
+ return u32{};
+ MemberName(gl_per_vertex_struct, declaration_index, name);
+ MemberDecorate(gl_per_vertex_struct, declaration_index, spv::Decoration::BuiltIn,
+ static_cast<u32>(builtin));
+ return declaration_index++;
+ };
+
+ position_index = MemberDecorateBuiltIn(spv::BuiltIn::Position, "position", true);
+ point_size_index =
+ MemberDecorateBuiltIn(spv::BuiltIn::PointSize, "point_size", is_point_size_declared);
+ clip_distances_index = MemberDecorateBuiltIn(spv::BuiltIn::ClipDistance, "clip_distances",
+ is_clip_distances_declared);
+
+ const Id type_pointer = TypePointer(spv::StorageClass::Output, gl_per_vertex_struct);
+ per_vertex = OpVariable(type_pointer, spv::StorageClass::Output);
+ AddGlobalVariable(Name(per_vertex, "per_vertex"));
+ interfaces.push_back(per_vertex);
+ }
+
+ void VisitBasicBlock(const NodeBlock& bb) {
+ for (const Node node : bb) {
+ static_cast<void>(Visit(node));
+ }
+ }
+
+ Id Visit(Node node) {
+ if (const auto operation = std::get_if<OperationNode>(node)) {
+ const auto operation_index = static_cast<std::size_t>(operation->GetCode());
+ const auto decompiler = operation_decompilers[operation_index];
+ if (decompiler == nullptr) {
+ UNREACHABLE_MSG("Operation decompiler {} not defined", operation_index);
+ }
+ return (this->*decompiler)(*operation);
+
+ } else if (const auto gpr = std::get_if<GprNode>(node)) {
+ const u32 index = gpr->GetIndex();
+ if (index == Register::ZeroIndex) {
+ return Constant(t_float, 0.0f);
+ }
+ return Emit(OpLoad(t_float, registers.at(index)));
+
+ } else if (const auto immediate = std::get_if<ImmediateNode>(node)) {
+ return BitcastTo<Type::Float>(Constant(t_uint, immediate->GetValue()));
+
+ } else if (const auto predicate = std::get_if<PredicateNode>(node)) {
+ const auto value = [&]() -> Id {
+ switch (const auto index = predicate->GetIndex(); index) {
+ case Tegra::Shader::Pred::UnusedIndex:
+ return v_true;
+ case Tegra::Shader::Pred::NeverExecute:
+ return v_false;
+ default:
+ return Emit(OpLoad(t_bool, predicates.at(index)));
+ }
+ }();
+ if (predicate->IsNegated()) {
+ return Emit(OpLogicalNot(t_bool, value));
+ }
+ return value;
+
+ } else if (const auto abuf = std::get_if<AbufNode>(node)) {
+ const auto attribute = abuf->GetIndex();
+ const auto element = abuf->GetElement();
+
+ switch (attribute) {
+ case Attribute::Index::Position:
+ if (stage != ShaderStage::Fragment) {
+ UNIMPLEMENTED();
+ break;
+ } else {
+ if (element == 3) {
+ return Constant(t_float, 1.0f);
+ }
+ return Emit(OpLoad(t_float, AccessElement(t_in_float, frag_coord, element)));
+ }
+ case Attribute::Index::TessCoordInstanceIDVertexID:
+ // TODO(Subv): Find out what the values are for the first two elements when inside a
+ // vertex shader, and what's the value of the fourth element when inside a Tess Eval
+ // shader.
+ ASSERT(stage == ShaderStage::Vertex);
+ switch (element) {
+ case 2:
+ return BitcastFrom<Type::Uint>(Emit(OpLoad(t_uint, instance_index)));
+ case 3:
+ return BitcastFrom<Type::Uint>(Emit(OpLoad(t_uint, vertex_index)));
+ }
+ UNIMPLEMENTED_MSG("Unmanaged TessCoordInstanceIDVertexID element={}", element);
+ return Constant(t_float, 0);
+ case Attribute::Index::FrontFacing:
+ // TODO(Subv): Find out what the values are for the other elements.
+ ASSERT(stage == ShaderStage::Fragment);
+ if (element == 3) {
+ const Id is_front_facing = Emit(OpLoad(t_bool, front_facing));
+ const Id true_value =
+ BitcastTo<Type::Float>(Constant(t_int, static_cast<s32>(-1)));
+ const Id false_value = BitcastTo<Type::Float>(Constant(t_int, 0));
+ return Emit(OpSelect(t_float, is_front_facing, true_value, false_value));
+ }
+ UNIMPLEMENTED_MSG("Unmanaged FrontFacing element={}", element);
+ return Constant(t_float, 0.0f);
+ default:
+ if (IsGenericAttribute(attribute)) {
+ const Id pointer =
+ AccessElement(t_in_float, input_attributes.at(attribute), element);
+ return Emit(OpLoad(t_float, pointer));
+ }
+ break;
+ }
+ UNIMPLEMENTED_MSG("Unhandled input attribute: {}", static_cast<u32>(attribute));
+
+ } else if (const auto cbuf = std::get_if<CbufNode>(node)) {
+ const Node offset = cbuf->GetOffset();
+ const Id buffer_id = constant_buffers.at(cbuf->GetIndex());
+
+ Id buffer_index{};
+ Id buffer_element{};
+
+ if (const auto immediate = std::get_if<ImmediateNode>(offset)) {
+ // Direct access
+ const u32 offset_imm = immediate->GetValue();
+ ASSERT(offset_imm % 4 == 0);
+ buffer_index = Constant(t_uint, offset_imm / 16);
+ buffer_element = Constant(t_uint, (offset_imm / 4) % 4);
+
+ } else if (std::holds_alternative<OperationNode>(*offset)) {
+ // Indirect access
+ // TODO(Rodrigo): Use a uniform buffer stride of 4 and drop this slow math (which
+ // emits sub-optimal code on GLSL from my testing).
+ const Id offset_id = BitcastTo<Type::Uint>(Visit(offset));
+ const Id unsafe_offset = Emit(OpUDiv(t_uint, offset_id, Constant(t_uint, 4)));
+ const Id final_offset = Emit(
+ OpUMod(t_uint, unsafe_offset, Constant(t_uint, MAX_CONSTBUFFER_ELEMENTS - 1)));
+ buffer_index = Emit(OpUDiv(t_uint, final_offset, Constant(t_uint, 4)));
+ buffer_element = Emit(OpUMod(t_uint, final_offset, Constant(t_uint, 4)));
+
+ } else {
+ UNREACHABLE_MSG("Unmanaged offset node type");
+ }
+
+ const Id pointer = Emit(OpAccessChain(t_cbuf_float, buffer_id, Constant(t_uint, 0),
+ buffer_index, buffer_element));
+ return Emit(OpLoad(t_float, pointer));
+
+ } else if (const auto gmem = std::get_if<GmemNode>(node)) {
+ const Id gmem_buffer = global_buffers.at(gmem->GetDescriptor());
+ const Id real = BitcastTo<Type::Uint>(Visit(gmem->GetRealAddress()));
+ const Id base = BitcastTo<Type::Uint>(Visit(gmem->GetBaseAddress()));
+
+ Id offset = Emit(OpISub(t_uint, real, base));
+ offset = Emit(OpUDiv(t_uint, offset, Constant(t_uint, 4u)));
+ return Emit(OpLoad(t_float, Emit(OpAccessChain(t_gmem_float, gmem_buffer,
+ Constant(t_uint, 0u), offset))));
+
+ } else if (const auto conditional = std::get_if<ConditionalNode>(node)) {
+ // It's invalid to call conditional on nested nodes, use an operation instead
+ const Id true_label = OpLabel();
+ const Id skip_label = OpLabel();
+ Emit(OpBranchConditional(Visit(conditional->GetCondition()), true_label, skip_label));
+ Emit(true_label);
+
+ VisitBasicBlock(conditional->GetCode());
+
+ Emit(OpBranch(skip_label));
+ Emit(skip_label);
+ return {};
+
+ } else if (const auto comment = std::get_if<CommentNode>(node)) {
+ Name(Emit(OpUndef(t_void)), comment->GetText());
+ return {};
+ }
+
+ UNREACHABLE();
+ return {};
+ }
+
+ template <Id (Module::*func)(Id, Id), Type result_type, Type type_a = result_type>
+ Id Unary(Operation operation) {
+ const Id type_def = GetTypeDefinition(result_type);
+ const Id op_a = VisitOperand<type_a>(operation, 0);
+
+ const Id value = BitcastFrom<result_type>(Emit((this->*func)(type_def, op_a)));
+ if (IsPrecise(operation)) {
+ Decorate(value, spv::Decoration::NoContraction);
+ }
+ return value;
+ }
+
+ template <Id (Module::*func)(Id, Id, Id), Type result_type, Type type_a = result_type,
+ Type type_b = type_a>
+ Id Binary(Operation operation) {
+ const Id type_def = GetTypeDefinition(result_type);
+ const Id op_a = VisitOperand<type_a>(operation, 0);
+ const Id op_b = VisitOperand<type_b>(operation, 1);
+
+ const Id value = BitcastFrom<result_type>(Emit((this->*func)(type_def, op_a, op_b)));
+ if (IsPrecise(operation)) {
+ Decorate(value, spv::Decoration::NoContraction);
+ }
+ return value;
+ }
+
+ template <Id (Module::*func)(Id, Id, Id, Id), Type result_type, Type type_a = result_type,
+ Type type_b = type_a, Type type_c = type_b>
+ Id Ternary(Operation operation) {
+ const Id type_def = GetTypeDefinition(result_type);
+ const Id op_a = VisitOperand<type_a>(operation, 0);
+ const Id op_b = VisitOperand<type_b>(operation, 1);
+ const Id op_c = VisitOperand<type_c>(operation, 2);
+
+ const Id value = BitcastFrom<result_type>(Emit((this->*func)(type_def, op_a, op_b, op_c)));
+ if (IsPrecise(operation)) {
+ Decorate(value, spv::Decoration::NoContraction);
+ }
+ return value;
+ }
+
+ template <Id (Module::*func)(Id, Id, Id, Id, Id), Type result_type, Type type_a = result_type,
+ Type type_b = type_a, Type type_c = type_b, Type type_d = type_c>
+ Id Quaternary(Operation operation) {
+ const Id type_def = GetTypeDefinition(result_type);
+ const Id op_a = VisitOperand<type_a>(operation, 0);
+ const Id op_b = VisitOperand<type_b>(operation, 1);
+ const Id op_c = VisitOperand<type_c>(operation, 2);
+ const Id op_d = VisitOperand<type_d>(operation, 3);
+
+ const Id value =
+ BitcastFrom<result_type>(Emit((this->*func)(type_def, op_a, op_b, op_c, op_d)));
+ if (IsPrecise(operation)) {
+ Decorate(value, spv::Decoration::NoContraction);
+ }
+ return value;
+ }
+
+ Id Assign(Operation operation) {
+ const Node dest = operation[0];
+ const Node src = operation[1];
+
+ Id target{};
+ if (const auto gpr = std::get_if<GprNode>(dest)) {
+ if (gpr->GetIndex() == Register::ZeroIndex) {
+ // Writing to Register::ZeroIndex is a no op
+ return {};
+ }
+ target = registers.at(gpr->GetIndex());
+
+ } else if (const auto abuf = std::get_if<AbufNode>(dest)) {
+ target = [&]() -> Id {
+ switch (const auto attribute = abuf->GetIndex(); attribute) {
+ case Attribute::Index::Position:
+ return AccessElement(t_out_float, per_vertex, position_index,
+ abuf->GetElement());
+ case Attribute::Index::PointSize:
+ return AccessElement(t_out_float, per_vertex, point_size_index);
+ case Attribute::Index::ClipDistances0123:
+ return AccessElement(t_out_float, per_vertex, clip_distances_index,
+ abuf->GetElement());
+ case Attribute::Index::ClipDistances4567:
+ return AccessElement(t_out_float, per_vertex, clip_distances_index,
+ abuf->GetElement() + 4);
+ default:
+ if (IsGenericAttribute(attribute)) {
+ return AccessElement(t_out_float, output_attributes.at(attribute),
+ abuf->GetElement());
+ }
+ UNIMPLEMENTED_MSG("Unhandled output attribute: {}",
+ static_cast<u32>(attribute));
+ return {};
+ }
+ }();
+
+ } else if (const auto lmem = std::get_if<LmemNode>(dest)) {
+ Id address = BitcastTo<Type::Uint>(Visit(lmem->GetAddress()));
+ address = Emit(OpUDiv(t_uint, address, Constant(t_uint, 4)));
+ target = Emit(OpAccessChain(t_prv_float, local_memory, {address}));
+ }
+
+ Emit(OpStore(target, Visit(src)));
+ return {};
+ }
+
+ Id HNegate(Operation operation) {
+ UNIMPLEMENTED();
+ return {};
+ }
+
+ Id HMergeF32(Operation operation) {
+ UNIMPLEMENTED();
+ return {};
+ }
+
+ Id HMergeH0(Operation operation) {
+ UNIMPLEMENTED();
+ return {};
+ }
+
+ Id HMergeH1(Operation operation) {
+ UNIMPLEMENTED();
+ return {};
+ }
+
+ Id HPack2(Operation operation) {
+ UNIMPLEMENTED();
+ return {};
+ }
+
+ Id LogicalAssign(Operation operation) {
+ const Node dest = operation[0];
+ const Node src = operation[1];
+
+ Id target{};
+ if (const auto pred = std::get_if<PredicateNode>(dest)) {
+ ASSERT_MSG(!pred->IsNegated(), "Negating logical assignment");
+
+ const auto 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 = predicates.at(index);
+
+ } else if (const auto flag = std::get_if<InternalFlagNode>(dest)) {
+ target = internal_flags.at(static_cast<u32>(flag->GetFlag()));
+ }
+
+ Emit(OpStore(target, Visit(src)));
+ return {};
+ }
+
+ Id LogicalPick2(Operation operation) {
+ UNIMPLEMENTED();
+ return {};
+ }
+
+ Id LogicalAll2(Operation operation) {
+ UNIMPLEMENTED();
+ return {};
+ }
+
+ Id LogicalAny2(Operation operation) {
+ UNIMPLEMENTED();
+ return {};
+ }
+
+ Id GetTextureSampler(Operation operation) {
+ const auto meta = std::get_if<MetaTexture>(&operation.GetMeta());
+ const auto entry = sampler_images.at(static_cast<u32>(meta->sampler.GetIndex()));
+ return Emit(OpLoad(entry.sampled_image_type, entry.sampler));
+ }
+
+ Id GetTextureImage(Operation operation) {
+ const auto meta = std::get_if<MetaTexture>(&operation.GetMeta());
+ const auto entry = sampler_images.at(static_cast<u32>(meta->sampler.GetIndex()));
+ return Emit(OpImage(entry.image_type, GetTextureSampler(operation)));
+ }
+
+ Id GetTextureCoordinates(Operation operation) {
+ const auto meta = std::get_if<MetaTexture>(&operation.GetMeta());
+ std::vector<Id> coords;
+ for (std::size_t i = 0; i < operation.GetOperandsCount(); ++i) {
+ coords.push_back(Visit(operation[i]));
+ }
+ if (meta->sampler.IsArray()) {
+ const Id array_integer = BitcastTo<Type::Int>(Visit(meta->array));
+ coords.push_back(Emit(OpConvertSToF(t_float, array_integer)));
+ }
+ if (meta->sampler.IsShadow()) {
+ coords.push_back(Visit(meta->depth_compare));
+ }
+
+ const std::array<Id, 4> t_float_lut = {nullptr, t_float2, t_float3, t_float4};
+ return coords.size() == 1
+ ? coords[0]
+ : Emit(OpCompositeConstruct(t_float_lut.at(coords.size() - 1), coords));
+ }
+
+ Id GetTextureElement(Operation operation, Id sample_value) {
+ const auto meta = std::get_if<MetaTexture>(&operation.GetMeta());
+ ASSERT(meta);
+ return Emit(OpCompositeExtract(t_float, sample_value, meta->element));
+ }
+
+ Id Texture(Operation operation) {
+ const Id texture = Emit(OpImageSampleImplicitLod(t_float4, GetTextureSampler(operation),
+ GetTextureCoordinates(operation)));
+ return GetTextureElement(operation, texture);
+ }
+
+ Id TextureLod(Operation operation) {
+ const auto meta = std::get_if<MetaTexture>(&operation.GetMeta());
+ const Id texture = Emit(OpImageSampleExplicitLod(
+ t_float4, GetTextureSampler(operation), GetTextureCoordinates(operation),
+ spv::ImageOperandsMask::Lod, Visit(meta->lod)));
+ return GetTextureElement(operation, texture);
+ }
+
+ Id TextureGather(Operation operation) {
+ const auto meta = std::get_if<MetaTexture>(&operation.GetMeta());
+ const auto coords = GetTextureCoordinates(operation);
+
+ Id texture;
+ if (meta->sampler.IsShadow()) {
+ texture = Emit(OpImageDrefGather(t_float4, GetTextureSampler(operation), coords,
+ Visit(meta->component)));
+ } else {
+ u32 component_value = 0;
+ if (meta->component) {
+ const auto component = std::get_if<ImmediateNode>(meta->component);
+ ASSERT_MSG(component, "Component is not an immediate value");
+ component_value = component->GetValue();
+ }
+ texture = Emit(OpImageGather(t_float4, GetTextureSampler(operation), coords,
+ Constant(t_uint, component_value)));
+ }
+
+ return GetTextureElement(operation, texture);
+ }
+
+ Id TextureQueryDimensions(Operation operation) {
+ const auto meta = std::get_if<MetaTexture>(&operation.GetMeta());
+ const auto image_id = GetTextureImage(operation);
+ AddCapability(spv::Capability::ImageQuery);
+
+ if (meta->element == 3) {
+ return BitcastTo<Type::Float>(Emit(OpImageQueryLevels(t_int, image_id)));
+ }
+
+ const Id lod = VisitOperand<Type::Uint>(operation, 0);
+ const std::size_t coords_count = [&]() {
+ switch (const auto type = meta->sampler.GetType(); type) {
+ case Tegra::Shader::TextureType::Texture1D:
+ return 1;
+ case Tegra::Shader::TextureType::Texture2D:
+ case Tegra::Shader::TextureType::TextureCube:
+ return 2;
+ case Tegra::Shader::TextureType::Texture3D:
+ return 3;
+ default:
+ UNREACHABLE_MSG("Invalid texture type={}", static_cast<u32>(type));
+ return 2;
+ }
+ }();
+
+ if (meta->element >= coords_count) {
+ return Constant(t_float, 0.0f);
+ }
+
+ const std::array<Id, 3> types = {t_int, t_int2, t_int3};
+ const Id sizes = Emit(OpImageQuerySizeLod(types.at(coords_count - 1), image_id, lod));
+ const Id size = Emit(OpCompositeExtract(t_int, sizes, meta->element));
+ return BitcastTo<Type::Float>(size);
+ }
+
+ Id TextureQueryLod(Operation operation) {
+ UNIMPLEMENTED();
+ return {};
+ }
+
+ Id TexelFetch(Operation operation) {
+ UNIMPLEMENTED();
+ return {};
+ }
+
+ Id Branch(Operation operation) {
+ const auto target = std::get_if<ImmediateNode>(operation[0]);
+ UNIMPLEMENTED_IF(!target);
+
+ Emit(OpStore(jmp_to, Constant(t_uint, target->GetValue())));
+ BranchingOp([&]() { Emit(OpBranch(continue_label)); });
+ return {};
+ }
+
+ Id PushFlowStack(Operation operation) {
+ const auto target = std::get_if<ImmediateNode>(operation[0]);
+ ASSERT(target);
+
+ const Id current = Emit(OpLoad(t_uint, flow_stack_top));
+ const Id next = Emit(OpIAdd(t_uint, current, Constant(t_uint, 1)));
+ const Id access = Emit(OpAccessChain(t_func_uint, flow_stack, current));
+
+ Emit(OpStore(access, Constant(t_uint, target->GetValue())));
+ Emit(OpStore(flow_stack_top, next));
+ return {};
+ }
+
+ Id PopFlowStack(Operation operation) {
+ const Id current = Emit(OpLoad(t_uint, flow_stack_top));
+ const Id previous = Emit(OpISub(t_uint, current, Constant(t_uint, 1)));
+ const Id access = Emit(OpAccessChain(t_func_uint, flow_stack, previous));
+ const Id target = Emit(OpLoad(t_uint, access));
+
+ Emit(OpStore(flow_stack_top, previous));
+ Emit(OpStore(jmp_to, target));
+ BranchingOp([&]() { Emit(OpBranch(continue_label)); });
+ return {};
+ }
+
+ Id Exit(Operation operation) {
+ switch (stage) {
+ case ShaderStage::Vertex: {
+ // TODO(Rodrigo): We should use VK_EXT_depth_range_unrestricted instead, but it doesn't
+ // seem to be working on Nvidia's drivers and Intel (mesa and blob) doesn't support it.
+ const Id position = AccessElement(t_float4, per_vertex, position_index);
+ Id depth = Emit(OpLoad(t_float, AccessElement(t_out_float, position, 2)));
+ depth = Emit(OpFAdd(t_float, depth, Constant(t_float, 1.0f)));
+ depth = Emit(OpFMul(t_float, depth, Constant(t_float, 0.5f)));
+ Emit(OpStore(AccessElement(t_out_float, position, 2), depth));
+ break;
+ }
+ case ShaderStage::Fragment: {
+ const auto SafeGetRegister = [&](u32 reg) {
+ // TODO(Rodrigo): Replace with contains once C++20 releases
+ if (const auto it = registers.find(reg); it != registers.end()) {
+ return Emit(OpLoad(t_float, it->second));
+ }
+ return Constant(t_float, 0.0f);
+ };
+
+ UNIMPLEMENTED_IF_MSG(header.ps.omap.sample_mask != 0,
+ "Sample mask write is unimplemented");
+
+ // TODO(Rodrigo): Alpha testing
+
+ // Write the color outputs using the data in the shader registers, disabled
+ // rendertargets/components are skipped in the register assignment.
+ u32 current_reg = 0;
+ for (u32 rt = 0; rt < Maxwell::NumRenderTargets; ++rt) {
+ // TODO(Subv): Figure out how dual-source blending is configured in the Switch.
+ for (u32 component = 0; component < 4; ++component) {
+ if (header.ps.IsColorComponentOutputEnabled(rt, component)) {
+ Emit(OpStore(AccessElement(t_out_float, frag_colors.at(rt), component),
+ SafeGetRegister(current_reg)));
+ ++current_reg;
+ }
+ }
+ }
+ if (header.ps.omap.depth) {
+ // The depth output is always 2 registers after the last color output, and
+ // current_reg already contains one past the last color register.
+ Emit(OpStore(frag_depth, SafeGetRegister(current_reg + 1)));
+ }
+ break;
+ }
+ }
+
+ BranchingOp([&]() { Emit(OpReturn()); });
+ return {};
+ }
+
+ Id Discard(Operation operation) {
+ BranchingOp([&]() { Emit(OpKill()); });
+ return {};
+ }
+
+ Id EmitVertex(Operation operation) {
+ UNIMPLEMENTED();
+ return {};
+ }
+
+ Id EndPrimitive(Operation operation) {
+ UNIMPLEMENTED();
+ return {};
+ }
+
+ Id YNegate(Operation operation) {
+ UNIMPLEMENTED();
+ return {};
+ }
+
+ Id DeclareBuiltIn(spv::BuiltIn builtin, spv::StorageClass storage, Id type,
+ const std::string& name) {
+ const Id id = OpVariable(type, storage);
+ Decorate(id, spv::Decoration::BuiltIn, static_cast<u32>(builtin));
+ AddGlobalVariable(Name(id, name));
+ interfaces.push_back(id);
+ return id;
+ }
+
+ bool IsRenderTargetUsed(u32 rt) const {
+ for (u32 component = 0; component < 4; ++component) {
+ if (header.ps.IsColorComponentOutputEnabled(rt, component)) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ template <typename... Args>
+ Id AccessElement(Id pointer_type, Id composite, Args... elements_) {
+ std::vector<Id> members;
+ auto elements = {elements_...};
+ for (const auto element : elements) {
+ members.push_back(Constant(t_uint, element));
+ }
+
+ return Emit(OpAccessChain(pointer_type, composite, members));
+ }
+
+ template <Type type>
+ Id VisitOperand(Operation operation, std::size_t operand_index) {
+ const Id value = Visit(operation[operand_index]);
+
+ switch (type) {
+ case Type::Bool:
+ case Type::Bool2:
+ case Type::Float:
+ return value;
+ case Type::Int:
+ return Emit(OpBitcast(t_int, value));
+ case Type::Uint:
+ return Emit(OpBitcast(t_uint, value));
+ case Type::HalfFloat:
+ UNIMPLEMENTED();
+ }
+ UNREACHABLE();
+ return value;
+ }
+
+ template <Type type>
+ Id BitcastFrom(Id value) {
+ switch (type) {
+ case Type::Bool:
+ case Type::Bool2:
+ case Type::Float:
+ return value;
+ case Type::Int:
+ case Type::Uint:
+ return Emit(OpBitcast(t_float, value));
+ case Type::HalfFloat:
+ UNIMPLEMENTED();
+ }
+ UNREACHABLE();
+ return value;
+ }
+
+ template <Type type>
+ Id BitcastTo(Id value) {
+ switch (type) {
+ case Type::Bool:
+ case Type::Bool2:
+ UNREACHABLE();
+ case Type::Float:
+ return Emit(OpBitcast(t_float, value));
+ case Type::Int:
+ return Emit(OpBitcast(t_int, value));
+ case Type::Uint:
+ return Emit(OpBitcast(t_uint, value));
+ case Type::HalfFloat:
+ UNIMPLEMENTED();
+ }
+ UNREACHABLE();
+ return value;
+ }
+
+ Id GetTypeDefinition(Type type) {
+ switch (type) {
+ case Type::Bool:
+ return t_bool;
+ case Type::Bool2:
+ return t_bool2;
+ case Type::Float:
+ return t_float;
+ case Type::Int:
+ return t_int;
+ case Type::Uint:
+ return t_uint;
+ case Type::HalfFloat:
+ UNIMPLEMENTED();
+ }
+ UNREACHABLE();
+ return {};
+ }
+
+ void BranchingOp(std::function<void()> call) {
+ const Id true_label = OpLabel();
+ const Id skip_label = OpLabel();
+ Emit(OpSelectionMerge(skip_label, spv::SelectionControlMask::Flatten));
+ Emit(OpBranchConditional(v_true, true_label, skip_label, 1, 0));
+ Emit(true_label);
+ call();
+
+ Emit(skip_label);
+ }
+
+ static constexpr OperationDecompilersArray operation_decompilers = {
+ &SPIRVDecompiler::Assign,
+
+ &SPIRVDecompiler::Ternary<&Module::OpSelect, Type::Float, Type::Bool, Type::Float,
+ Type::Float>,
+
+ &SPIRVDecompiler::Binary<&Module::OpFAdd, Type::Float>,
+ &SPIRVDecompiler::Binary<&Module::OpFMul, Type::Float>,
+ &SPIRVDecompiler::Binary<&Module::OpFDiv, Type::Float>,
+ &SPIRVDecompiler::Ternary<&Module::OpFma, Type::Float>,
+ &SPIRVDecompiler::Unary<&Module::OpFNegate, Type::Float>,
+ &SPIRVDecompiler::Unary<&Module::OpFAbs, Type::Float>,
+ &SPIRVDecompiler::Ternary<&Module::OpFClamp, Type::Float>,
+ &SPIRVDecompiler::Binary<&Module::OpFMin, Type::Float>,
+ &SPIRVDecompiler::Binary<&Module::OpFMax, Type::Float>,
+ &SPIRVDecompiler::Unary<&Module::OpCos, Type::Float>,
+ &SPIRVDecompiler::Unary<&Module::OpSin, Type::Float>,
+ &SPIRVDecompiler::Unary<&Module::OpExp2, Type::Float>,
+ &SPIRVDecompiler::Unary<&Module::OpLog2, Type::Float>,
+ &SPIRVDecompiler::Unary<&Module::OpInverseSqrt, Type::Float>,
+ &SPIRVDecompiler::Unary<&Module::OpSqrt, Type::Float>,
+ &SPIRVDecompiler::Unary<&Module::OpRoundEven, Type::Float>,
+ &SPIRVDecompiler::Unary<&Module::OpFloor, Type::Float>,
+ &SPIRVDecompiler::Unary<&Module::OpCeil, Type::Float>,
+ &SPIRVDecompiler::Unary<&Module::OpTrunc, Type::Float>,
+ &SPIRVDecompiler::Unary<&Module::OpConvertSToF, Type::Float, Type::Int>,
+ &SPIRVDecompiler::Unary<&Module::OpConvertUToF, Type::Float, Type::Uint>,
+
+ &SPIRVDecompiler::Binary<&Module::OpIAdd, Type::Int>,
+ &SPIRVDecompiler::Binary<&Module::OpIMul, Type::Int>,
+ &SPIRVDecompiler::Binary<&Module::OpSDiv, Type::Int>,
+ &SPIRVDecompiler::Unary<&Module::OpSNegate, Type::Int>,
+ &SPIRVDecompiler::Unary<&Module::OpSAbs, Type::Int>,
+ &SPIRVDecompiler::Binary<&Module::OpSMin, Type::Int>,
+ &SPIRVDecompiler::Binary<&Module::OpSMax, Type::Int>,
+
+ &SPIRVDecompiler::Unary<&Module::OpConvertFToS, Type::Int, Type::Float>,
+ &SPIRVDecompiler::Unary<&Module::OpBitcast, Type::Int, Type::Uint>,
+ &SPIRVDecompiler::Binary<&Module::OpShiftLeftLogical, Type::Int, Type::Int, Type::Uint>,
+ &SPIRVDecompiler::Binary<&Module::OpShiftRightLogical, Type::Int, Type::Int, Type::Uint>,
+ &SPIRVDecompiler::Binary<&Module::OpShiftRightArithmetic, Type::Int, Type::Int, Type::Uint>,
+ &SPIRVDecompiler::Binary<&Module::OpBitwiseAnd, Type::Int>,
+ &SPIRVDecompiler::Binary<&Module::OpBitwiseOr, Type::Int>,
+ &SPIRVDecompiler::Binary<&Module::OpBitwiseXor, Type::Int>,
+ &SPIRVDecompiler::Unary<&Module::OpNot, Type::Int>,
+ &SPIRVDecompiler::Quaternary<&Module::OpBitFieldInsert, Type::Int>,
+ &SPIRVDecompiler::Ternary<&Module::OpBitFieldSExtract, Type::Int>,
+ &SPIRVDecompiler::Unary<&Module::OpBitCount, Type::Int>,
+
+ &SPIRVDecompiler::Binary<&Module::OpIAdd, Type::Uint>,
+ &SPIRVDecompiler::Binary<&Module::OpIMul, Type::Uint>,
+ &SPIRVDecompiler::Binary<&Module::OpUDiv, Type::Uint>,
+ &SPIRVDecompiler::Binary<&Module::OpUMin, Type::Uint>,
+ &SPIRVDecompiler::Binary<&Module::OpUMax, Type::Uint>,
+ &SPIRVDecompiler::Unary<&Module::OpConvertFToU, Type::Uint, Type::Float>,
+ &SPIRVDecompiler::Unary<&Module::OpBitcast, Type::Uint, Type::Int>,
+ &SPIRVDecompiler::Binary<&Module::OpShiftLeftLogical, Type::Uint>,
+ &SPIRVDecompiler::Binary<&Module::OpShiftRightLogical, Type::Uint>,
+ &SPIRVDecompiler::Binary<&Module::OpShiftRightArithmetic, Type::Uint>,
+ &SPIRVDecompiler::Binary<&Module::OpBitwiseAnd, Type::Uint>,
+ &SPIRVDecompiler::Binary<&Module::OpBitwiseOr, Type::Uint>,
+ &SPIRVDecompiler::Binary<&Module::OpBitwiseXor, Type::Uint>,
+ &SPIRVDecompiler::Unary<&Module::OpNot, Type::Uint>,
+ &SPIRVDecompiler::Quaternary<&Module::OpBitFieldInsert, Type::Uint>,
+ &SPIRVDecompiler::Ternary<&Module::OpBitFieldUExtract, Type::Uint>,
+ &SPIRVDecompiler::Unary<&Module::OpBitCount, Type::Uint>,
+
+ &SPIRVDecompiler::Binary<&Module::OpFAdd, Type::HalfFloat>,
+ &SPIRVDecompiler::Binary<&Module::OpFMul, Type::HalfFloat>,
+ &SPIRVDecompiler::Ternary<&Module::OpFma, Type::HalfFloat>,
+ &SPIRVDecompiler::Unary<&Module::OpFAbs, Type::HalfFloat>,
+ &SPIRVDecompiler::HNegate,
+ &SPIRVDecompiler::HMergeF32,
+ &SPIRVDecompiler::HMergeH0,
+ &SPIRVDecompiler::HMergeH1,
+ &SPIRVDecompiler::HPack2,
+
+ &SPIRVDecompiler::LogicalAssign,
+ &SPIRVDecompiler::Binary<&Module::OpLogicalAnd, Type::Bool>,
+ &SPIRVDecompiler::Binary<&Module::OpLogicalOr, Type::Bool>,
+ &SPIRVDecompiler::Binary<&Module::OpLogicalNotEqual, Type::Bool>,
+ &SPIRVDecompiler::Unary<&Module::OpLogicalNot, Type::Bool>,
+ &SPIRVDecompiler::LogicalPick2,
+ &SPIRVDecompiler::LogicalAll2,
+ &SPIRVDecompiler::LogicalAny2,
+
+ &SPIRVDecompiler::Binary<&Module::OpFOrdLessThan, Type::Bool, Type::Float>,
+ &SPIRVDecompiler::Binary<&Module::OpFOrdEqual, Type::Bool, Type::Float>,
+ &SPIRVDecompiler::Binary<&Module::OpFOrdLessThanEqual, Type::Bool, Type::Float>,
+ &SPIRVDecompiler::Binary<&Module::OpFOrdGreaterThan, Type::Bool, Type::Float>,
+ &SPIRVDecompiler::Binary<&Module::OpFOrdNotEqual, Type::Bool, Type::Float>,
+ &SPIRVDecompiler::Binary<&Module::OpFOrdGreaterThanEqual, Type::Bool, Type::Float>,
+ &SPIRVDecompiler::Unary<&Module::OpIsNan, Type::Bool>,
+
+ &SPIRVDecompiler::Binary<&Module::OpSLessThan, Type::Bool, Type::Int>,
+ &SPIRVDecompiler::Binary<&Module::OpIEqual, Type::Bool, Type::Int>,
+ &SPIRVDecompiler::Binary<&Module::OpSLessThanEqual, Type::Bool, Type::Int>,
+ &SPIRVDecompiler::Binary<&Module::OpSGreaterThan, Type::Bool, Type::Int>,
+ &SPIRVDecompiler::Binary<&Module::OpINotEqual, Type::Bool, Type::Int>,
+ &SPIRVDecompiler::Binary<&Module::OpSGreaterThanEqual, Type::Bool, Type::Int>,
+
+ &SPIRVDecompiler::Binary<&Module::OpULessThan, Type::Bool, Type::Uint>,
+ &SPIRVDecompiler::Binary<&Module::OpIEqual, Type::Bool, Type::Uint>,
+ &SPIRVDecompiler::Binary<&Module::OpULessThanEqual, Type::Bool, Type::Uint>,
+ &SPIRVDecompiler::Binary<&Module::OpUGreaterThan, Type::Bool, Type::Uint>,
+ &SPIRVDecompiler::Binary<&Module::OpINotEqual, Type::Bool, Type::Uint>,
+ &SPIRVDecompiler::Binary<&Module::OpUGreaterThanEqual, Type::Bool, Type::Uint>,
+
+ &SPIRVDecompiler::Binary<&Module::OpFOrdLessThan, Type::Bool, Type::HalfFloat>,
+ &SPIRVDecompiler::Binary<&Module::OpFOrdEqual, Type::Bool, Type::HalfFloat>,
+ &SPIRVDecompiler::Binary<&Module::OpFOrdLessThanEqual, Type::Bool, Type::HalfFloat>,
+ &SPIRVDecompiler::Binary<&Module::OpFOrdGreaterThan, Type::Bool, Type::HalfFloat>,
+ &SPIRVDecompiler::Binary<&Module::OpFOrdNotEqual, Type::Bool, Type::HalfFloat>,
+ &SPIRVDecompiler::Binary<&Module::OpFOrdGreaterThanEqual, Type::Bool, Type::HalfFloat>,
+
+ &SPIRVDecompiler::Texture,
+ &SPIRVDecompiler::TextureLod,
+ &SPIRVDecompiler::TextureGather,
+ &SPIRVDecompiler::TextureQueryDimensions,
+ &SPIRVDecompiler::TextureQueryLod,
+ &SPIRVDecompiler::TexelFetch,
+
+ &SPIRVDecompiler::Branch,
+ &SPIRVDecompiler::PushFlowStack,
+ &SPIRVDecompiler::PopFlowStack,
+ &SPIRVDecompiler::Exit,
+ &SPIRVDecompiler::Discard,
+
+ &SPIRVDecompiler::EmitVertex,
+ &SPIRVDecompiler::EndPrimitive,
+
+ &SPIRVDecompiler::YNegate,
+ };
+
+ const ShaderIR& ir;
+ const ShaderStage stage;
+ const Tegra::Shader::Header header;
+
+ const Id t_void = Name(TypeVoid(), "void");
+
+ const Id t_bool = Name(TypeBool(), "bool");
+ const Id t_bool2 = Name(TypeVector(t_bool, 2), "bool2");
+
+ const Id t_int = Name(TypeInt(32, true), "int");
+ const Id t_int2 = Name(TypeVector(t_int, 2), "int2");
+ const Id t_int3 = Name(TypeVector(t_int, 3), "int3");
+ const Id t_int4 = Name(TypeVector(t_int, 4), "int4");
+
+ const Id t_uint = Name(TypeInt(32, false), "uint");
+ const Id t_uint2 = Name(TypeVector(t_uint, 2), "uint2");
+ const Id t_uint3 = Name(TypeVector(t_uint, 3), "uint3");
+ const Id t_uint4 = Name(TypeVector(t_uint, 4), "uint4");
+
+ const Id t_float = Name(TypeFloat(32), "float");
+ const Id t_float2 = Name(TypeVector(t_float, 2), "float2");
+ const Id t_float3 = Name(TypeVector(t_float, 3), "float3");
+ const Id t_float4 = Name(TypeVector(t_float, 4), "float4");
+
+ const Id t_prv_bool = Name(TypePointer(spv::StorageClass::Private, t_bool), "prv_bool");
+ const Id t_prv_float = Name(TypePointer(spv::StorageClass::Private, t_float), "prv_float");
+
+ const Id t_func_uint = Name(TypePointer(spv::StorageClass::Function, t_uint), "func_uint");
+
+ const Id t_in_bool = Name(TypePointer(spv::StorageClass::Input, t_bool), "in_bool");
+ const Id t_in_uint = Name(TypePointer(spv::StorageClass::Input, t_uint), "in_uint");
+ const Id t_in_float = Name(TypePointer(spv::StorageClass::Input, t_float), "in_float");
+ const Id t_in_float4 = Name(TypePointer(spv::StorageClass::Input, t_float4), "in_float4");
+
+ const Id t_out_float = Name(TypePointer(spv::StorageClass::Output, t_float), "out_float");
+ const Id t_out_float4 = Name(TypePointer(spv::StorageClass::Output, t_float4), "out_float4");
+
+ const Id t_cbuf_float = TypePointer(spv::StorageClass::Uniform, t_float);
+ const Id t_cbuf_array =
+ Decorate(Name(TypeArray(t_float4, Constant(t_uint, MAX_CONSTBUFFER_ELEMENTS)), "CbufArray"),
+ spv::Decoration::ArrayStride, CBUF_STRIDE);
+ const Id t_cbuf_struct = MemberDecorate(
+ Decorate(TypeStruct(t_cbuf_array), spv::Decoration::Block), 0, spv::Decoration::Offset, 0);
+ const Id t_cbuf_ubo = TypePointer(spv::StorageClass::Uniform, t_cbuf_struct);
+
+ const Id t_gmem_float = TypePointer(spv::StorageClass::StorageBuffer, t_float);
+ const Id t_gmem_array =
+ Name(Decorate(TypeRuntimeArray(t_float), spv::Decoration::ArrayStride, 4u), "GmemArray");
+ const Id t_gmem_struct = MemberDecorate(
+ Decorate(TypeStruct(t_gmem_array), spv::Decoration::Block), 0, spv::Decoration::Offset, 0);
+ const Id t_gmem_ssbo = TypePointer(spv::StorageClass::StorageBuffer, t_gmem_struct);
+
+ const Id v_float_zero = Constant(t_float, 0.0f);
+ const Id v_true = ConstantTrue(t_bool);
+ const Id v_false = ConstantFalse(t_bool);
+
+ Id per_vertex{};
+ std::map<u32, Id> registers;
+ std::map<Tegra::Shader::Pred, Id> predicates;
+ Id local_memory{};
+ std::array<Id, INTERNAL_FLAGS_COUNT> internal_flags{};
+ std::map<Attribute::Index, Id> input_attributes;
+ std::map<Attribute::Index, Id> output_attributes;
+ std::map<u32, Id> constant_buffers;
+ std::map<GlobalMemoryBase, Id> global_buffers;
+ std::map<u32, SamplerImage> sampler_images;
+
+ Id instance_index{};
+ Id vertex_index{};
+ std::array<Id, Maxwell::NumRenderTargets> frag_colors{};
+ Id frag_depth{};
+ Id frag_coord{};
+ Id front_facing{};
+
+ u32 position_index{};
+ u32 point_size_index{};
+ u32 clip_distances_index{};
+
+ std::vector<Id> interfaces;
+
+ u32 const_buffers_base_binding{};
+ u32 global_buffers_base_binding{};
+ u32 samplers_base_binding{};
+
+ Id execute_function{};
+ Id jmp_to{};
+ Id flow_stack_top{};
+ Id flow_stack{};
+ Id continue_label{};
+ std::map<u32, Id> labels;
+};
+
+DecompilerResult Decompile(const VideoCommon::Shader::ShaderIR& ir, Maxwell::ShaderStage stage) {
+ auto decompiler = std::make_unique<SPIRVDecompiler>(ir, stage);
+ decompiler->Decompile();
+ return {std::move(decompiler), decompiler->GetShaderEntries()};
+}
+
+} // namespace Vulkan::VKShader
diff --git a/src/video_core/renderer_vulkan/vk_shader_decompiler.h b/src/video_core/renderer_vulkan/vk_shader_decompiler.h
new file mode 100644
index 000000000..329d8fa38
--- /dev/null
+++ b/src/video_core/renderer_vulkan/vk_shader_decompiler.h
@@ -0,0 +1,80 @@
+// Copyright 2019 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <array>
+#include <memory>
+#include <set>
+#include <utility>
+#include <vector>
+
+#include <sirit/sirit.h>
+
+#include "common/common_types.h"
+#include "video_core/engines/maxwell_3d.h"
+#include "video_core/shader/shader_ir.h"
+
+namespace VideoCommon::Shader {
+class ShaderIR;
+}
+
+namespace Vulkan::VKShader {
+
+using Maxwell = Tegra::Engines::Maxwell3D::Regs;
+
+using SamplerEntry = VideoCommon::Shader::Sampler;
+
+constexpr u32 DESCRIPTOR_SET = 0;
+
+class ConstBufferEntry : public VideoCommon::Shader::ConstBuffer {
+public:
+ explicit constexpr ConstBufferEntry(const VideoCommon::Shader::ConstBuffer& entry, u32 index)
+ : VideoCommon::Shader::ConstBuffer{entry}, index{index} {}
+
+ constexpr u32 GetIndex() const {
+ return index;
+ }
+
+private:
+ u32 index{};
+};
+
+class GlobalBufferEntry {
+public:
+ explicit GlobalBufferEntry(u32 cbuf_index, u32 cbuf_offset)
+ : cbuf_index{cbuf_index}, cbuf_offset{cbuf_offset} {}
+
+ u32 GetCbufIndex() const {
+ return cbuf_index;
+ }
+
+ u32 GetCbufOffset() const {
+ return cbuf_offset;
+ }
+
+private:
+ u32 cbuf_index{};
+ u32 cbuf_offset{};
+};
+
+struct ShaderEntries {
+ u32 const_buffers_base_binding{};
+ u32 global_buffers_base_binding{};
+ u32 samplers_base_binding{};
+ std::vector<ConstBufferEntry> const_buffers;
+ std::vector<GlobalBufferEntry> global_buffers;
+ std::vector<SamplerEntry> samplers;
+ std::set<u32> attributes;
+ std::array<bool, Maxwell::NumClipDistances> clip_distances{};
+ std::size_t shader_length{};
+ Sirit::Id entry_function{};
+ std::vector<Sirit::Id> interfaces;
+};
+
+using DecompilerResult = std::pair<std::unique_ptr<Sirit::Module>, ShaderEntries>;
+
+DecompilerResult Decompile(const VideoCommon::Shader::ShaderIR& ir, Maxwell::ShaderStage stage);
+
+} // namespace Vulkan::VKShader