From 13aa664f3f0e778b8b4d4b01c28eee07677431e4 Mon Sep 17 00:00:00 2001 From: ReinUsesLisp Date: Thu, 14 Mar 2019 02:23:37 -0300 Subject: [PATCH] vk_shader_decompiler: Implement declarations --- .../renderer_vulkan/vk_shader_decompiler.cpp | 460 +++++++++++++++++- 1 file changed, 457 insertions(+), 3 deletions(-) diff --git a/src/video_core/renderer_vulkan/vk_shader_decompiler.cpp b/src/video_core/renderer_vulkan/vk_shader_decompiler.cpp index 3b8793840..563b3eb51 100644 --- a/src/video_core/renderer_vulkan/vk_shader_decompiler.cpp +++ b/src/video_core/renderer_vulkan/vk_shader_decompiler.cpp @@ -2,38 +2,492 @@ // Licensed under GPLv2 or any later version // Refer to the license.txt file included. +#include +#include +#include + +#include + #include +#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; +// 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(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(attribute) - static_cast(Attribute::Index::Attribute_0); +} + +} // namespace + class SPIRVDecompiler : public Sirit::Module { public: explicit SPIRVDecompiler(const ShaderIR& ir, ShaderStage stage) - : Module(0x00010300), ir{ir}, stage{stage}, header{ir.GetHeader()} {} + : 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(); + + DeclareVertex(); + DeclareGeometry(); + DeclareFragment(); + DeclareRegisters(); + DeclarePredicates(); + DeclareLocalMemory(); + DeclareInternalFlags(); + DeclareInputAttributes(); + DeclareOutputAttributes(); + DeclareConstantBuffers(); + DeclareGlobalBuffers(); + DeclareSamplers(); + UNIMPLEMENTED(); } ShaderEntries GetShaderEntries() const { - UNIMPLEMENTED(); - return {}; + 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: + static constexpr auto INTERNAL_FLAGS_COUNT = static_cast(InternalFlag::Amount); + static constexpr u32 CBUF_STRIDE = 16; + + void AllocateBindings() { + const u32 binding_base = static_cast(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(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 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(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(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(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(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 names = {"zero", "sign", "carry", + "overflow"}; + for (std::size_t flag = 0; flag < INTERNAL_FLAGS_COUNT; ++flag) { + const auto flag_code = static_cast(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(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 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(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); + } + + 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(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; + } + 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_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 registers; + std::map predicates; + Id local_memory{}; + std::array internal_flags{}; + std::map input_attributes; + std::map output_attributes; + std::map constant_buffers; + std::map global_buffers; + std::map sampler_images; + + Id instance_index{}; + Id vertex_index{}; + std::array frag_colors{}; + Id frag_depth{}; + Id frag_coord{}; + Id front_facing{}; + + u32 position_index{}; + u32 point_size_index{}; + u32 clip_distances_index{}; + + std::vector interfaces; + + u32 const_buffers_base_binding{}; + u32 global_buffers_base_binding{}; + u32 samplers_base_binding{}; + + Id execute_function{}; }; DecompilerResult Decompile(const VideoCommon::Shader::ShaderIR& ir, Maxwell::ShaderStage stage) {