345 lines
14 KiB
C++
345 lines
14 KiB
C++
// Copyright 2021 yuzu Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include <algorithm>
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#include <array>
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#include <string_view>
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#include <fmt/format.h>
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#include "common/common_types.h"
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#include "shader_recompiler/backend/spirv/emit_context.h"
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namespace Shader::Backend::SPIRV {
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namespace {
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Id ImageType(EmitContext& ctx, const TextureDescriptor& desc) {
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const spv::ImageFormat format{spv::ImageFormat::Unknown};
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const Id type{ctx.F32[1]};
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switch (desc.type) {
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case TextureType::Color1D:
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return ctx.TypeImage(type, spv::Dim::Dim1D, false, false, false, 1, format);
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case TextureType::ColorArray1D:
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return ctx.TypeImage(type, spv::Dim::Dim1D, false, true, false, 1, format);
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case TextureType::Color2D:
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return ctx.TypeImage(type, spv::Dim::Dim2D, false, false, false, 1, format);
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case TextureType::ColorArray2D:
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return ctx.TypeImage(type, spv::Dim::Dim2D, false, true, false, 1, format);
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case TextureType::Color3D:
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return ctx.TypeImage(type, spv::Dim::Dim3D, false, false, false, 1, format);
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case TextureType::ColorCube:
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return ctx.TypeImage(type, spv::Dim::Cube, false, false, false, 1, format);
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case TextureType::ColorArrayCube:
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return ctx.TypeImage(type, spv::Dim::Cube, false, true, false, 1, format);
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case TextureType::Shadow1D:
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return ctx.TypeImage(type, spv::Dim::Dim1D, true, false, false, 1, format);
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case TextureType::ShadowArray1D:
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return ctx.TypeImage(type, spv::Dim::Dim1D, true, true, false, 1, format);
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case TextureType::Shadow2D:
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return ctx.TypeImage(type, spv::Dim::Dim2D, true, false, false, 1, format);
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case TextureType::ShadowArray2D:
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return ctx.TypeImage(type, spv::Dim::Dim2D, true, true, false, 1, format);
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case TextureType::Shadow3D:
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return ctx.TypeImage(type, spv::Dim::Dim3D, true, false, false, 1, format);
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case TextureType::ShadowCube:
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return ctx.TypeImage(type, spv::Dim::Cube, true, false, false, 1, format);
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case TextureType::ShadowArrayCube:
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return ctx.TypeImage(type, spv::Dim::Cube, false, true, false, 1, format);
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}
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throw InvalidArgument("Invalid texture type {}", desc.type);
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}
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Id DefineVariable(EmitContext& ctx, Id type, std::optional<spv::BuiltIn> builtin,
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spv::StorageClass storage_class) {
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const Id pointer_type{ctx.TypePointer(storage_class, type)};
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const Id id{ctx.AddGlobalVariable(pointer_type, storage_class)};
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if (builtin) {
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ctx.Decorate(id, spv::Decoration::BuiltIn, *builtin);
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}
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ctx.interfaces.push_back(id);
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return id;
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}
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Id DefineInput(EmitContext& ctx, Id type, std::optional<spv::BuiltIn> builtin = std::nullopt) {
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return DefineVariable(ctx, type, builtin, spv::StorageClass::Input);
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}
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Id DefineOutput(EmitContext& ctx, Id type, std::optional<spv::BuiltIn> builtin = std::nullopt) {
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return DefineVariable(ctx, type, builtin, spv::StorageClass::Output);
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}
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} // Anonymous namespace
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void VectorTypes::Define(Sirit::Module& sirit_ctx, Id base_type, std::string_view name) {
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defs[0] = sirit_ctx.Name(base_type, name);
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std::array<char, 6> def_name;
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for (int i = 1; i < 4; ++i) {
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const std::string_view def_name_view(
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def_name.data(),
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fmt::format_to_n(def_name.data(), def_name.size(), "{}x{}", name, i + 1).size);
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defs[i] = sirit_ctx.Name(sirit_ctx.TypeVector(base_type, i + 1), def_name_view);
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}
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}
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EmitContext::EmitContext(const Profile& profile_, IR::Program& program, u32& binding)
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: Sirit::Module(0x00010000), profile{profile_} {
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AddCapability(spv::Capability::Shader);
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DefineCommonTypes(program.info);
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DefineCommonConstants();
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DefineInterfaces(program.info, program.stage);
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DefineConstantBuffers(program.info, binding);
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DefineStorageBuffers(program.info, binding);
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DefineTextures(program.info, binding);
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DefineLabels(program);
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}
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EmitContext::~EmitContext() = default;
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Id EmitContext::Def(const IR::Value& value) {
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if (!value.IsImmediate()) {
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return value.Inst()->Definition<Id>();
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}
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switch (value.Type()) {
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case IR::Type::Void:
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// Void instructions are used for optional arguments (e.g. texture offsets)
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// They are not meant to be used in the SPIR-V module
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return Id{};
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case IR::Type::U1:
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return value.U1() ? true_value : false_value;
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case IR::Type::U32:
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return Constant(U32[1], value.U32());
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case IR::Type::U64:
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return Constant(U64, value.U64());
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case IR::Type::F32:
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return Constant(F32[1], value.F32());
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case IR::Type::F64:
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return Constant(F64[1], value.F64());
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case IR::Type::Label:
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return value.Label()->Definition<Id>();
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default:
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throw NotImplementedException("Immediate type {}", value.Type());
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}
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}
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void EmitContext::DefineCommonTypes(const Info& info) {
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void_id = TypeVoid();
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U1 = Name(TypeBool(), "u1");
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F32.Define(*this, TypeFloat(32), "f32");
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U32.Define(*this, TypeInt(32, false), "u32");
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input_f32 = Name(TypePointer(spv::StorageClass::Input, F32[1]), "input_f32");
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output_f32 = Name(TypePointer(spv::StorageClass::Output, F32[1]), "output_f32");
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if (info.uses_int8) {
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AddCapability(spv::Capability::Int8);
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U8 = Name(TypeInt(8, false), "u8");
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S8 = Name(TypeInt(8, true), "s8");
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}
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if (info.uses_int16) {
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AddCapability(spv::Capability::Int16);
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U16 = Name(TypeInt(16, false), "u16");
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S16 = Name(TypeInt(16, true), "s16");
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}
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if (info.uses_int64) {
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AddCapability(spv::Capability::Int64);
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U64 = Name(TypeInt(64, false), "u64");
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}
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if (info.uses_fp16) {
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AddCapability(spv::Capability::Float16);
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F16.Define(*this, TypeFloat(16), "f16");
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}
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if (info.uses_fp64) {
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AddCapability(spv::Capability::Float64);
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F64.Define(*this, TypeFloat(64), "f64");
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}
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}
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void EmitContext::DefineCommonConstants() {
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true_value = ConstantTrue(U1);
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false_value = ConstantFalse(U1);
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u32_zero_value = Constant(U32[1], 0U);
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}
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void EmitContext::DefineInterfaces(const Info& info, Stage stage) {
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DefineInputs(info, stage);
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DefineOutputs(info, stage);
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}
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void EmitContext::DefineConstantBuffers(const Info& info, u32& binding) {
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if (info.constant_buffer_descriptors.empty()) {
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return;
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}
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if (True(info.used_constant_buffer_types & IR::Type::U8)) {
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DefineConstantBuffers(info, &UniformDefinitions::U8, binding, U8, 'u', sizeof(u8));
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DefineConstantBuffers(info, &UniformDefinitions::S8, binding, S8, 's', sizeof(s8));
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}
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if (True(info.used_constant_buffer_types & IR::Type::U16)) {
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DefineConstantBuffers(info, &UniformDefinitions::U16, binding, U16, 'u', sizeof(u16));
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DefineConstantBuffers(info, &UniformDefinitions::S16, binding, S16, 's', sizeof(s16));
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}
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if (True(info.used_constant_buffer_types & IR::Type::U32)) {
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DefineConstantBuffers(info, &UniformDefinitions::U32, binding, U32[1], 'u', sizeof(u32));
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}
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if (True(info.used_constant_buffer_types & IR::Type::F32)) {
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DefineConstantBuffers(info, &UniformDefinitions::F32, binding, F32[1], 'f', sizeof(f32));
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}
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if (True(info.used_constant_buffer_types & IR::Type::U64)) {
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DefineConstantBuffers(info, &UniformDefinitions::U64, binding, U64, 'u', sizeof(u64));
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}
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for (const ConstantBufferDescriptor& desc : info.constant_buffer_descriptors) {
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binding += desc.count;
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}
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}
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void EmitContext::DefineStorageBuffers(const Info& info, u32& binding) {
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if (info.storage_buffers_descriptors.empty()) {
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return;
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}
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AddExtension("SPV_KHR_storage_buffer_storage_class");
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const Id array_type{TypeRuntimeArray(U32[1])};
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Decorate(array_type, spv::Decoration::ArrayStride, 4U);
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const Id struct_type{TypeStruct(array_type)};
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Name(struct_type, "ssbo_block");
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Decorate(struct_type, spv::Decoration::Block);
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MemberName(struct_type, 0, "data");
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MemberDecorate(struct_type, 0, spv::Decoration::Offset, 0U);
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const Id storage_type{TypePointer(spv::StorageClass::StorageBuffer, struct_type)};
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storage_u32 = TypePointer(spv::StorageClass::StorageBuffer, U32[1]);
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u32 index{};
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for (const StorageBufferDescriptor& desc : info.storage_buffers_descriptors) {
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const Id id{AddGlobalVariable(storage_type, spv::StorageClass::StorageBuffer)};
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Decorate(id, spv::Decoration::Binding, binding);
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Decorate(id, spv::Decoration::DescriptorSet, 0U);
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Name(id, fmt::format("ssbo{}", index));
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std::fill_n(ssbos.data() + index, desc.count, id);
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index += desc.count;
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binding += desc.count;
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}
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}
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void EmitContext::DefineTextures(const Info& info, u32& binding) {
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textures.reserve(info.texture_descriptors.size());
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for (const TextureDescriptor& desc : info.texture_descriptors) {
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if (desc.count != 1) {
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throw NotImplementedException("Array of textures");
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}
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const Id type{TypeSampledImage(ImageType(*this, desc))};
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const Id pointer_type{TypePointer(spv::StorageClass::UniformConstant, type)};
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const Id id{AddGlobalVariable(pointer_type, spv::StorageClass::UniformConstant)};
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Decorate(id, spv::Decoration::Binding, binding);
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Decorate(id, spv::Decoration::DescriptorSet, 0U);
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Name(id, fmt::format("tex{}_{:02x}", desc.cbuf_index, desc.cbuf_offset));
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for (u32 index = 0; index < desc.count; ++index) {
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// TODO: Pass count info
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textures.push_back(TextureDefinition{
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.id{id},
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.type{type},
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});
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}
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binding += desc.count;
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}
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}
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void EmitContext::DefineLabels(IR::Program& program) {
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for (IR::Block* const block : program.blocks) {
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block->SetDefinition(OpLabel());
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}
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}
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void EmitContext::DefineInputs(const Info& info, Stage stage) {
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if (info.uses_workgroup_id) {
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workgroup_id = DefineInput(*this, U32[3], spv::BuiltIn::WorkgroupId);
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}
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if (info.uses_local_invocation_id) {
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local_invocation_id = DefineInput(*this, U32[3], spv::BuiltIn::LocalInvocationId);
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}
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if (info.loads_position) {
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const bool is_fragment{stage != Stage::Fragment};
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const spv::BuiltIn built_in{is_fragment ? spv::BuiltIn::Position : spv::BuiltIn::FragCoord};
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input_position = DefineInput(*this, F32[4], built_in);
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}
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if (info.loads_instance_id) {
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if (profile.support_vertex_instance_id) {
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instance_id = DefineInput(*this, U32[1], spv::BuiltIn::InstanceId);
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} else {
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instance_index = DefineInput(*this, U32[1], spv::BuiltIn::InstanceIndex);
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base_instance = DefineInput(*this, U32[1], spv::BuiltIn::BaseInstance);
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}
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}
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if (info.loads_vertex_id) {
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if (profile.support_vertex_instance_id) {
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vertex_id = DefineInput(*this, U32[1], spv::BuiltIn::VertexId);
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} else {
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vertex_index = DefineInput(*this, U32[1], spv::BuiltIn::VertexIndex);
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base_vertex = DefineInput(*this, U32[1], spv::BuiltIn::BaseVertex);
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}
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}
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for (size_t index = 0; index < info.loads_generics.size(); ++index) {
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if (!info.loads_generics[index]) {
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continue;
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}
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// FIXME: Declare size from input
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const Id id{DefineInput(*this, F32[4])};
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Decorate(id, spv::Decoration::Location, static_cast<u32>(index));
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Name(id, fmt::format("in_attr{}", index));
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input_generics[index] = id;
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}
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}
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void EmitContext::DefineConstantBuffers(const Info& info, Id UniformDefinitions::*member_type,
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u32 binding, Id type, char type_char, u32 element_size) {
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const Id array_type{TypeArray(type, Constant(U32[1], 65536U / element_size))};
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Decorate(array_type, spv::Decoration::ArrayStride, element_size);
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const Id struct_type{TypeStruct(array_type)};
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Name(struct_type, fmt::format("cbuf_block_{}{}", type_char, element_size * CHAR_BIT));
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Decorate(struct_type, spv::Decoration::Block);
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MemberName(struct_type, 0, "data");
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MemberDecorate(struct_type, 0, spv::Decoration::Offset, 0U);
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const Id struct_pointer_type{TypePointer(spv::StorageClass::Uniform, struct_type)};
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const Id uniform_type{TypePointer(spv::StorageClass::Uniform, type)};
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uniform_types.*member_type = uniform_type;
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for (const ConstantBufferDescriptor& desc : info.constant_buffer_descriptors) {
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const Id id{AddGlobalVariable(struct_pointer_type, spv::StorageClass::Uniform)};
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Decorate(id, spv::Decoration::Binding, binding);
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Decorate(id, spv::Decoration::DescriptorSet, 0U);
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Name(id, fmt::format("c{}", desc.index));
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for (size_t i = 0; i < desc.count; ++i) {
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cbufs[desc.index + i].*member_type = id;
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}
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binding += desc.count;
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}
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}
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void EmitContext::DefineOutputs(const Info& info, Stage stage) {
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if (info.stores_position) {
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output_position = DefineOutput(*this, F32[4], spv::BuiltIn::Position);
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}
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for (size_t i = 0; i < info.stores_generics.size(); ++i) {
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if (info.stores_generics[i]) {
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output_generics[i] = DefineOutput(*this, F32[4]);
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Decorate(output_generics[i], spv::Decoration::Location, static_cast<u32>(i));
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Name(output_generics[i], fmt::format("out_attr{}", i));
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}
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}
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if (stage == Stage::Fragment) {
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for (size_t i = 0; i < 8; ++i) {
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if (!info.stores_frag_color[i]) {
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continue;
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}
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frag_color[i] = DefineOutput(*this, F32[4]);
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Decorate(frag_color[i], spv::Decoration::Location, static_cast<u32>(i));
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Name(frag_color[i], fmt::format("frag_color{}", i));
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}
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}
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}
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} // namespace Shader::Backend::SPIRV
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