288 lines
11 KiB
C++
288 lines
11 KiB
C++
// Copyright 2017 The Dawn Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "dawn_native/ShaderModule.h"
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#include "dawn_native/BindGroupLayout.h"
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#include "dawn_native/Device.h"
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#include "dawn_native/Pipeline.h"
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#include "dawn_native/PipelineLayout.h"
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#include <spirv-cross/spirv_cross.hpp>
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#include <spirv-tools/libspirv.hpp>
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namespace dawn_native {
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MaybeError ValidateShaderModuleDescriptor(DeviceBase*,
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const ShaderModuleDescriptor* descriptor) {
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if (descriptor->nextInChain != nullptr) {
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return DAWN_VALIDATION_ERROR("nextInChain must be nullptr");
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}
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spvtools::SpirvTools spirvTools(SPV_ENV_VULKAN_1_1);
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std::ostringstream errorStream;
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errorStream << "SPIRV Validation failure:" << std::endl;
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spirvTools.SetMessageConsumer([&errorStream](spv_message_level_t level, const char*,
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const spv_position_t& position,
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const char* message) {
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switch (level) {
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case SPV_MSG_FATAL:
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case SPV_MSG_INTERNAL_ERROR:
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case SPV_MSG_ERROR:
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errorStream << "error: line " << position.index << ": " << message << std::endl;
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break;
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case SPV_MSG_WARNING:
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errorStream << "warning: line " << position.index << ": " << message
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<< std::endl;
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break;
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case SPV_MSG_INFO:
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errorStream << "info: line " << position.index << ": " << message << std::endl;
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break;
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default:
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break;
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}
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});
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if (!spirvTools.Validate(descriptor->code, descriptor->codeSize)) {
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return DAWN_VALIDATION_ERROR(errorStream.str().c_str());
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}
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return {};
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}
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// ShaderModuleBase
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ShaderModuleBase::ShaderModuleBase(DeviceBase* device, const ShaderModuleDescriptor*)
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: ObjectBase(device) {
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}
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ShaderModuleBase::ShaderModuleBase(DeviceBase* device, ObjectBase::ErrorTag tag)
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: ObjectBase(device, tag) {
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}
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// static
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ShaderModuleBase* ShaderModuleBase::MakeError(DeviceBase* device) {
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return new ShaderModuleBase(device, ObjectBase::kError);
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}
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void ShaderModuleBase::ExtractSpirvInfo(const spirv_cross::Compiler& compiler) {
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ASSERT(!IsError());
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DeviceBase* device = GetDevice();
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// TODO(cwallez@chromium.org): make errors here creation errors
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// currently errors here do not prevent the shadermodule from being used
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const auto& resources = compiler.get_shader_resources();
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switch (compiler.get_execution_model()) {
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case spv::ExecutionModelVertex:
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mExecutionModel = dawn::ShaderStage::Vertex;
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break;
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case spv::ExecutionModelFragment:
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mExecutionModel = dawn::ShaderStage::Fragment;
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break;
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case spv::ExecutionModelGLCompute:
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mExecutionModel = dawn::ShaderStage::Compute;
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break;
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default:
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UNREACHABLE();
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}
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// Extract push constants
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mPushConstants.mask.reset();
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mPushConstants.sizes.fill(0);
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mPushConstants.types.fill(PushConstantType::Int);
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if (resources.push_constant_buffers.size() > 0) {
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auto interfaceBlock = resources.push_constant_buffers[0];
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const auto& blockType = compiler.get_type(interfaceBlock.type_id);
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ASSERT(blockType.basetype == spirv_cross::SPIRType::Struct);
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for (uint32_t i = 0; i < blockType.member_types.size(); i++) {
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ASSERT(compiler.get_member_decoration_bitset(blockType.self, i)
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.get(spv::DecorationOffset));
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uint32_t offset =
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compiler.get_member_decoration(blockType.self, i, spv::DecorationOffset);
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ASSERT(offset % 4 == 0);
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offset /= 4;
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auto memberType = compiler.get_type(blockType.member_types[i]);
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PushConstantType constantType;
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if (memberType.basetype == spirv_cross::SPIRType::Int) {
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constantType = PushConstantType::Int;
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} else if (memberType.basetype == spirv_cross::SPIRType::UInt) {
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constantType = PushConstantType::UInt;
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} else {
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ASSERT(memberType.basetype == spirv_cross::SPIRType::Float);
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constantType = PushConstantType::Float;
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}
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// TODO(cwallez@chromium.org): check for overflows and make the logic better take
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// into account things like the array of types with padding.
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uint32_t size = memberType.vecsize * memberType.columns;
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// Handle unidimensional arrays
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if (!memberType.array.empty()) {
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size *= memberType.array[0];
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}
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if (offset + size > kMaxPushConstants) {
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device->HandleError("Push constant block too big in the SPIRV");
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return;
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}
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mPushConstants.mask.set(offset);
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mPushConstants.names[offset] =
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interfaceBlock.name + "." + compiler.get_member_name(blockType.self, i);
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mPushConstants.sizes[offset] = size;
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mPushConstants.types[offset] = constantType;
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}
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}
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// Fill in bindingInfo with the SPIRV bindings
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auto ExtractResourcesBinding = [this](const std::vector<spirv_cross::Resource>& resources,
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const spirv_cross::Compiler& compiler,
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dawn::BindingType bindingType) {
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for (const auto& resource : resources) {
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ASSERT(compiler.get_decoration_bitset(resource.id).get(spv::DecorationBinding));
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ASSERT(
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compiler.get_decoration_bitset(resource.id).get(spv::DecorationDescriptorSet));
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uint32_t binding = compiler.get_decoration(resource.id, spv::DecorationBinding);
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uint32_t set = compiler.get_decoration(resource.id, spv::DecorationDescriptorSet);
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if (binding >= kMaxBindingsPerGroup || set >= kMaxBindGroups) {
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GetDevice()->HandleError("Binding over limits in the SPIRV");
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continue;
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}
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auto& info = mBindingInfo[set][binding];
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info.used = true;
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info.id = resource.id;
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info.base_type_id = resource.base_type_id;
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info.type = bindingType;
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}
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};
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ExtractResourcesBinding(resources.uniform_buffers, compiler,
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dawn::BindingType::UniformBuffer);
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ExtractResourcesBinding(resources.separate_images, compiler,
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dawn::BindingType::SampledTexture);
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ExtractResourcesBinding(resources.separate_samplers, compiler, dawn::BindingType::Sampler);
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ExtractResourcesBinding(resources.storage_buffers, compiler,
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dawn::BindingType::StorageBuffer);
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// Extract the vertex attributes
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if (mExecutionModel == dawn::ShaderStage::Vertex) {
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for (const auto& attrib : resources.stage_inputs) {
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ASSERT(compiler.get_decoration_bitset(attrib.id).get(spv::DecorationLocation));
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uint32_t location = compiler.get_decoration(attrib.id, spv::DecorationLocation);
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if (location >= kMaxVertexAttributes) {
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device->HandleError("Attribute location over limits in the SPIRV");
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return;
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}
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mUsedVertexAttributes.set(location);
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}
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// Without a location qualifier on vertex outputs, spirv_cross::CompilerMSL gives them
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// all the location 0, causing a compile error.
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for (const auto& attrib : resources.stage_outputs) {
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if (!compiler.get_decoration_bitset(attrib.id).get(spv::DecorationLocation)) {
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device->HandleError("Need location qualifier on vertex output");
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return;
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}
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}
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}
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if (mExecutionModel == dawn::ShaderStage::Fragment) {
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// Without a location qualifier on vertex inputs, spirv_cross::CompilerMSL gives them
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// all the location 0, causing a compile error.
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for (const auto& attrib : resources.stage_inputs) {
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if (!compiler.get_decoration_bitset(attrib.id).get(spv::DecorationLocation)) {
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device->HandleError("Need location qualifier on fragment input");
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return;
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}
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}
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}
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}
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const ShaderModuleBase::PushConstantInfo& ShaderModuleBase::GetPushConstants() const {
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ASSERT(!IsError());
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return mPushConstants;
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}
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const ShaderModuleBase::ModuleBindingInfo& ShaderModuleBase::GetBindingInfo() const {
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ASSERT(!IsError());
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return mBindingInfo;
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}
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const std::bitset<kMaxVertexAttributes>& ShaderModuleBase::GetUsedVertexAttributes() const {
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ASSERT(!IsError());
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return mUsedVertexAttributes;
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}
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dawn::ShaderStage ShaderModuleBase::GetExecutionModel() const {
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ASSERT(!IsError());
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return mExecutionModel;
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}
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bool ShaderModuleBase::IsCompatibleWithPipelineLayout(const PipelineLayoutBase* layout) {
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ASSERT(!IsError());
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for (uint32_t group : IterateBitSet(layout->GetBindGroupLayoutsMask())) {
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if (!IsCompatibleWithBindGroupLayout(group, layout->GetBindGroupLayout(group))) {
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return false;
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}
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}
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for (uint32_t group : IterateBitSet(~layout->GetBindGroupLayoutsMask())) {
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for (size_t i = 0; i < kMaxBindingsPerGroup; ++i) {
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if (mBindingInfo[group][i].used) {
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return false;
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}
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}
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}
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return true;
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}
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bool ShaderModuleBase::IsCompatibleWithBindGroupLayout(size_t group,
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const BindGroupLayoutBase* layout) {
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ASSERT(!IsError());
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const auto& layoutInfo = layout->GetBindingInfo();
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for (size_t i = 0; i < kMaxBindingsPerGroup; ++i) {
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const auto& moduleInfo = mBindingInfo[group][i];
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if (!moduleInfo.used) {
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continue;
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}
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if (moduleInfo.type != layoutInfo.types[i]) {
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return false;
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}
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if ((layoutInfo.visibilities[i] & StageBit(mExecutionModel)) == 0) {
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return false;
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}
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}
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return true;
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}
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} // namespace dawn_native
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