| // Copyright 2017 The Dawn Authors |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "backend/d3d12/ShaderModuleD3D12.h" |
| |
| #include "common/Assert.h" |
| |
| #include <spirv-cross/spirv_hlsl.hpp> |
| |
| namespace backend { namespace d3d12 { |
| |
| // TODO(kainino@chromium.org): Consider replacing this with a generic enum_map. |
| template <typename T> |
| class BindingTypeMap { |
| public: |
| T& operator[](nxt::BindingType type) { |
| switch (type) { |
| case nxt::BindingType::UniformBuffer: |
| return mMap[0]; |
| case nxt::BindingType::Sampler: |
| return mMap[1]; |
| case nxt::BindingType::SampledTexture: |
| return mMap[2]; |
| case nxt::BindingType::StorageBuffer: |
| return mMap[3]; |
| default: |
| NXT_UNREACHABLE(); |
| } |
| } |
| |
| private: |
| static constexpr int kNumBindingTypes = 4; |
| std::array<T, kNumBindingTypes> mMap{}; |
| }; |
| |
| ShaderModule::ShaderModule(Device* device, ShaderModuleBuilder* builder) |
| : ShaderModuleBase(builder), mDevice(device) { |
| spirv_cross::CompilerHLSL compiler(builder->AcquireSpirv()); |
| |
| spirv_cross::CompilerGLSL::Options options_glsl; |
| options_glsl.vertex.fixup_clipspace = true; |
| options_glsl.vertex.flip_vert_y = true; |
| compiler.spirv_cross::CompilerGLSL::set_options(options_glsl); |
| |
| spirv_cross::CompilerHLSL::Options options_hlsl; |
| options_hlsl.shader_model = 51; |
| compiler.spirv_cross::CompilerHLSL::set_options(options_hlsl); |
| |
| ExtractSpirvInfo(compiler); |
| |
| // rename bindings so that each register type c/u/t/s starts at 0 and then offset by |
| // kMaxBindingsPerGroup * bindGroupIndex |
| const auto& moduleBindingInfo = GetBindingInfo(); |
| for (uint32_t group = 0; group < moduleBindingInfo.size(); ++group) { |
| const auto& groupBindingInfo = moduleBindingInfo[group]; |
| |
| BindingTypeMap<uint32_t> baseRegisters{}; |
| for (const auto& bindingInfo : groupBindingInfo) { |
| if (bindingInfo.used) { |
| uint32_t& baseRegister = baseRegisters[bindingInfo.type]; |
| uint32_t bindGroupOffset = group * kMaxBindingsPerGroup; |
| compiler.set_decoration(bindingInfo.id, spv::DecorationBinding, |
| bindGroupOffset + baseRegister++); |
| } |
| } |
| } |
| |
| mHlslSource = compiler.compile(); |
| } |
| |
| const std::string& ShaderModule::GetHLSLSource() const { |
| return mHlslSource; |
| } |
| |
| }} // namespace backend::d3d12 |