| // 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 "dawn_native/BindGroupLayout.h" |
| |
| #include "common/BitSetIterator.h" |
| |
| #include "dawn_native/ChainUtils_autogen.h" |
| #include "dawn_native/Device.h" |
| #include "dawn_native/ObjectContentHasher.h" |
| #include "dawn_native/PerStage.h" |
| #include "dawn_native/ValidationUtils_autogen.h" |
| |
| #include <algorithm> |
| #include <functional> |
| #include <set> |
| |
| namespace dawn_native { |
| |
| namespace { |
| MaybeError ValidateStorageTextureFormat(DeviceBase* device, |
| wgpu::TextureFormat storageTextureFormat) { |
| const Format* format = nullptr; |
| DAWN_TRY_ASSIGN(format, device->GetInternalFormat(storageTextureFormat)); |
| |
| ASSERT(format != nullptr); |
| if (!format->supportsStorageUsage) { |
| return DAWN_VALIDATION_ERROR("Texture format does not support storage textures"); |
| } |
| |
| return {}; |
| } |
| |
| MaybeError ValidateStorageTextureViewDimension(wgpu::TextureViewDimension dimension) { |
| switch (dimension) { |
| case wgpu::TextureViewDimension::Cube: |
| case wgpu::TextureViewDimension::CubeArray: |
| return DAWN_VALIDATION_ERROR( |
| "Cube map and cube map texture views cannot be used as storage textures"); |
| |
| case wgpu::TextureViewDimension::e1D: |
| case wgpu::TextureViewDimension::e2D: |
| case wgpu::TextureViewDimension::e2DArray: |
| case wgpu::TextureViewDimension::e3D: |
| return {}; |
| |
| case wgpu::TextureViewDimension::Undefined: |
| UNREACHABLE(); |
| } |
| } |
| } // anonymous namespace |
| |
| MaybeError ValidateBindGroupLayoutDescriptor(DeviceBase* device, |
| const BindGroupLayoutDescriptor* descriptor) { |
| if (descriptor->nextInChain != nullptr) { |
| return DAWN_VALIDATION_ERROR("nextInChain must be nullptr"); |
| } |
| |
| std::set<BindingNumber> bindingsSet; |
| BindingCounts bindingCounts = {}; |
| for (uint32_t i = 0; i < descriptor->entryCount; ++i) { |
| const BindGroupLayoutEntry& entry = descriptor->entries[i]; |
| BindingNumber bindingNumber = BindingNumber(entry.binding); |
| |
| if (bindingsSet.count(bindingNumber) != 0) { |
| return DAWN_VALIDATION_ERROR("some binding index was specified more than once"); |
| } |
| |
| DAWN_TRY(ValidateShaderStage(entry.visibility)); |
| |
| int bindingMemberCount = 0; |
| wgpu::ShaderStage allowedStages = kAllStages; |
| |
| if (entry.buffer.type != wgpu::BufferBindingType::Undefined) { |
| bindingMemberCount++; |
| const BufferBindingLayout& buffer = entry.buffer; |
| |
| // The kInternalStorageBufferBinding is used internally and not a value |
| // in wgpu::BufferBindingType. |
| if (buffer.type != kInternalStorageBufferBinding) { |
| DAWN_TRY(ValidateBufferBindingType(buffer.type)); |
| } |
| |
| if (buffer.type == wgpu::BufferBindingType::Storage || |
| buffer.type == kInternalStorageBufferBinding) { |
| allowedStages &= ~wgpu::ShaderStage::Vertex; |
| } |
| |
| // Dynamic storage buffers aren't bounds checked properly in D3D12. Disallow them as |
| // unsafe until the bounds checks are implemented. |
| if (device->IsToggleEnabled(Toggle::DisallowUnsafeAPIs) && |
| buffer.hasDynamicOffset && |
| (buffer.type == wgpu::BufferBindingType::Storage || |
| buffer.type == kInternalStorageBufferBinding || |
| buffer.type == wgpu::BufferBindingType::ReadOnlyStorage)) { |
| return DAWN_VALIDATION_ERROR( |
| "Dynamic storage buffers are disallowed because they aren't secure yet. " |
| "See https://crbug.com/dawn/429"); |
| } |
| } |
| if (entry.sampler.type != wgpu::SamplerBindingType::Undefined) { |
| bindingMemberCount++; |
| DAWN_TRY(ValidateSamplerBindingType(entry.sampler.type)); |
| } |
| if (entry.texture.sampleType != wgpu::TextureSampleType::Undefined) { |
| bindingMemberCount++; |
| const TextureBindingLayout& texture = entry.texture; |
| DAWN_TRY(ValidateTextureSampleType(texture.sampleType)); |
| |
| // viewDimension defaults to 2D if left undefined, needs validation otherwise. |
| wgpu::TextureViewDimension viewDimension = wgpu::TextureViewDimension::e2D; |
| if (texture.viewDimension != wgpu::TextureViewDimension::Undefined) { |
| DAWN_TRY(ValidateTextureViewDimension(texture.viewDimension)); |
| viewDimension = texture.viewDimension; |
| } |
| |
| if (texture.multisampled) { |
| if (viewDimension != wgpu::TextureViewDimension::e2D) { |
| return DAWN_VALIDATION_ERROR("Multisampled texture bindings must be 2D."); |
| } |
| // TODO: This check should eventually become obsolete. According to the spec, |
| // depth can be used with both regular and comparison sampling. As such, during |
| // pipeline creation we have to check that if a comparison sampler is used |
| // with a texture, that texture must be both depth and not multisampled. |
| if (texture.sampleType == wgpu::TextureSampleType::Depth) { |
| return DAWN_VALIDATION_ERROR( |
| "Multisampled texture bindings must not be Depth."); |
| } |
| } |
| } |
| if (entry.storageTexture.access != wgpu::StorageTextureAccess::Undefined) { |
| bindingMemberCount++; |
| const StorageTextureBindingLayout& storageTexture = entry.storageTexture; |
| DAWN_TRY(ValidateStorageTextureAccess(storageTexture.access)); |
| DAWN_TRY(ValidateStorageTextureFormat(device, storageTexture.format)); |
| |
| // viewDimension defaults to 2D if left undefined, needs validation otherwise. |
| if (storageTexture.viewDimension != wgpu::TextureViewDimension::Undefined) { |
| DAWN_TRY(ValidateTextureViewDimension(storageTexture.viewDimension)); |
| DAWN_TRY(ValidateStorageTextureViewDimension(storageTexture.viewDimension)); |
| } |
| |
| if (storageTexture.access == wgpu::StorageTextureAccess::WriteOnly) { |
| allowedStages &= ~wgpu::ShaderStage::Vertex; |
| } |
| } |
| |
| const ExternalTextureBindingLayout* externalTextureBindingLayout = nullptr; |
| FindInChain(entry.nextInChain, &externalTextureBindingLayout); |
| if (externalTextureBindingLayout != nullptr) { |
| bindingMemberCount++; |
| } |
| |
| if (bindingMemberCount != 1) { |
| return DAWN_VALIDATION_ERROR( |
| "Exactly one of buffer, sampler, texture, storageTexture, or externalTexture " |
| "must be set for each BindGroupLayoutEntry"); |
| } |
| |
| if (!IsSubset(entry.visibility, allowedStages)) { |
| return DAWN_VALIDATION_ERROR("Binding type cannot be used with this visibility."); |
| } |
| |
| IncrementBindingCounts(&bindingCounts, entry); |
| |
| bindingsSet.insert(bindingNumber); |
| } |
| |
| DAWN_TRY(ValidateBindingCounts(bindingCounts)); |
| |
| return {}; |
| } |
| |
| namespace { |
| |
| |
| bool operator!=(const BindingInfo& a, const BindingInfo& b) { |
| if (a.visibility != b.visibility || a.bindingType != b.bindingType) { |
| return true; |
| } |
| |
| switch (a.bindingType) { |
| case BindingInfoType::Buffer: |
| return a.buffer.type != b.buffer.type || |
| a.buffer.hasDynamicOffset != b.buffer.hasDynamicOffset || |
| a.buffer.minBindingSize != b.buffer.minBindingSize; |
| case BindingInfoType::Sampler: |
| return a.sampler.type != b.sampler.type; |
| case BindingInfoType::Texture: |
| return a.texture.sampleType != b.texture.sampleType || |
| a.texture.viewDimension != b.texture.viewDimension || |
| a.texture.multisampled != b.texture.multisampled; |
| case BindingInfoType::StorageTexture: |
| return a.storageTexture.access != b.storageTexture.access || |
| a.storageTexture.viewDimension != b.storageTexture.viewDimension || |
| a.storageTexture.format != b.storageTexture.format; |
| case BindingInfoType::ExternalTexture: |
| return false; |
| } |
| } |
| |
| bool IsBufferBinding(const BindGroupLayoutEntry& binding) { |
| return binding.buffer.type != wgpu::BufferBindingType::Undefined; |
| } |
| |
| bool BindingHasDynamicOffset(const BindGroupLayoutEntry& binding) { |
| if (binding.buffer.type != wgpu::BufferBindingType::Undefined) { |
| return binding.buffer.hasDynamicOffset; |
| } |
| return false; |
| } |
| |
| BindingInfo CreateBindGroupLayoutInfo(const BindGroupLayoutEntry& binding) { |
| BindingInfo bindingInfo; |
| bindingInfo.binding = BindingNumber(binding.binding); |
| bindingInfo.visibility = binding.visibility; |
| |
| if (binding.buffer.type != wgpu::BufferBindingType::Undefined) { |
| bindingInfo.bindingType = BindingInfoType::Buffer; |
| bindingInfo.buffer = binding.buffer; |
| } else if (binding.sampler.type != wgpu::SamplerBindingType::Undefined) { |
| bindingInfo.bindingType = BindingInfoType::Sampler; |
| bindingInfo.sampler = binding.sampler; |
| } else if (binding.texture.sampleType != wgpu::TextureSampleType::Undefined) { |
| bindingInfo.bindingType = BindingInfoType::Texture; |
| bindingInfo.texture = binding.texture; |
| |
| if (binding.texture.viewDimension == wgpu::TextureViewDimension::Undefined) { |
| bindingInfo.texture.viewDimension = wgpu::TextureViewDimension::e2D; |
| } |
| } else if (binding.storageTexture.access != wgpu::StorageTextureAccess::Undefined) { |
| bindingInfo.bindingType = BindingInfoType::StorageTexture; |
| bindingInfo.storageTexture = binding.storageTexture; |
| |
| if (binding.storageTexture.viewDimension == wgpu::TextureViewDimension::Undefined) { |
| bindingInfo.storageTexture.viewDimension = wgpu::TextureViewDimension::e2D; |
| } |
| } else { |
| const ExternalTextureBindingLayout* externalTextureBindingLayout = nullptr; |
| FindInChain(binding.nextInChain, &externalTextureBindingLayout); |
| if (externalTextureBindingLayout != nullptr) { |
| bindingInfo.bindingType = BindingInfoType::ExternalTexture; |
| } |
| } |
| |
| return bindingInfo; |
| } |
| |
| bool SortBindingsCompare(const BindGroupLayoutEntry& a, const BindGroupLayoutEntry& b) { |
| const bool aIsBuffer = IsBufferBinding(a); |
| const bool bIsBuffer = IsBufferBinding(b); |
| if (aIsBuffer != bIsBuffer) { |
| // Always place buffers first. |
| return aIsBuffer; |
| } |
| |
| if (aIsBuffer) { |
| bool aHasDynamicOffset = BindingHasDynamicOffset(a); |
| bool bHasDynamicOffset = BindingHasDynamicOffset(b); |
| ASSERT(bIsBuffer); |
| if (aHasDynamicOffset != bHasDynamicOffset) { |
| // Buffers with dynamic offsets should come before those without. |
| // This makes it easy to iterate over the dynamic buffer bindings |
| // [0, dynamicBufferCount) during validation. |
| return aHasDynamicOffset; |
| } |
| if (aHasDynamicOffset) { |
| ASSERT(bHasDynamicOffset); |
| ASSERT(a.binding != b.binding); |
| // Above, we ensured that dynamic buffers are first. Now, ensure that |
| // dynamic buffer bindings are in increasing order. This is because dynamic |
| // buffer offsets are applied in increasing order of binding number. |
| return a.binding < b.binding; |
| } |
| } |
| |
| // This applies some defaults and gives us a single value to check for the binding type. |
| BindingInfo aInfo = CreateBindGroupLayoutInfo(a); |
| BindingInfo bInfo = CreateBindGroupLayoutInfo(b); |
| |
| // Sort by type. |
| if (aInfo.bindingType != bInfo.bindingType) { |
| return aInfo.bindingType < bInfo.bindingType; |
| } |
| |
| if (a.visibility != b.visibility) { |
| return a.visibility < b.visibility; |
| } |
| |
| switch (aInfo.bindingType) { |
| case BindingInfoType::Buffer: |
| if (aInfo.buffer.minBindingSize != bInfo.buffer.minBindingSize) { |
| return aInfo.buffer.minBindingSize < bInfo.buffer.minBindingSize; |
| } |
| break; |
| case BindingInfoType::Sampler: |
| if (aInfo.sampler.type != bInfo.sampler.type) { |
| return aInfo.sampler.type < bInfo.sampler.type; |
| } |
| break; |
| case BindingInfoType::Texture: |
| if (aInfo.texture.multisampled != bInfo.texture.multisampled) { |
| return aInfo.texture.multisampled < bInfo.texture.multisampled; |
| } |
| if (aInfo.texture.viewDimension != bInfo.texture.viewDimension) { |
| return aInfo.texture.viewDimension < bInfo.texture.viewDimension; |
| } |
| if (aInfo.texture.sampleType != bInfo.texture.sampleType) { |
| return aInfo.texture.sampleType < bInfo.texture.sampleType; |
| } |
| break; |
| case BindingInfoType::StorageTexture: |
| if (aInfo.storageTexture.access != bInfo.storageTexture.access) { |
| return aInfo.storageTexture.access < bInfo.storageTexture.access; |
| } |
| if (aInfo.storageTexture.viewDimension != bInfo.storageTexture.viewDimension) { |
| return aInfo.storageTexture.viewDimension < |
| bInfo.storageTexture.viewDimension; |
| } |
| if (aInfo.storageTexture.format != bInfo.storageTexture.format) { |
| return aInfo.storageTexture.format < bInfo.storageTexture.format; |
| } |
| break; |
| case BindingInfoType::ExternalTexture: |
| break; |
| } |
| return false; |
| } |
| |
| // This is a utility function to help ASSERT that the BGL-binding comparator places buffers |
| // first. |
| bool CheckBufferBindingsFirst(ityp::span<BindingIndex, const BindingInfo> bindings) { |
| BindingIndex lastBufferIndex{0}; |
| BindingIndex firstNonBufferIndex = std::numeric_limits<BindingIndex>::max(); |
| for (BindingIndex i{0}; i < bindings.size(); ++i) { |
| if (bindings[i].bindingType == BindingInfoType::Buffer) { |
| lastBufferIndex = std::max(i, lastBufferIndex); |
| } else { |
| firstNonBufferIndex = std::min(i, firstNonBufferIndex); |
| } |
| } |
| |
| // If there are no buffers, then |lastBufferIndex| is initialized to 0 and |
| // |firstNonBufferIndex| gets set to 0. |
| return firstNonBufferIndex >= lastBufferIndex; |
| } |
| |
| } // namespace |
| |
| // BindGroupLayoutBase |
| |
| BindGroupLayoutBase::BindGroupLayoutBase(DeviceBase* device, |
| const BindGroupLayoutDescriptor* descriptor) |
| : CachedObject(device), mBindingInfo(BindingIndex(descriptor->entryCount)) { |
| std::vector<BindGroupLayoutEntry> sortedBindings( |
| descriptor->entries, descriptor->entries + descriptor->entryCount); |
| |
| std::sort(sortedBindings.begin(), sortedBindings.end(), SortBindingsCompare); |
| |
| for (BindingIndex i{0}; i < mBindingInfo.size(); ++i) { |
| const BindGroupLayoutEntry& binding = sortedBindings[static_cast<uint32_t>(i)]; |
| |
| mBindingInfo[i] = CreateBindGroupLayoutInfo(binding); |
| |
| if (IsBufferBinding(binding)) { |
| // Buffers must be contiguously packed at the start of the binding info. |
| ASSERT(GetBufferCount() == i); |
| } |
| IncrementBindingCounts(&mBindingCounts, binding); |
| |
| const auto& it = mBindingMap.emplace(BindingNumber(binding.binding), i); |
| ASSERT(it.second); |
| } |
| ASSERT(CheckBufferBindingsFirst({mBindingInfo.data(), GetBindingCount()})); |
| ASSERT(mBindingInfo.size() <= kMaxBindingsPerPipelineLayoutTyped); |
| } |
| |
| BindGroupLayoutBase::BindGroupLayoutBase(DeviceBase* device, ObjectBase::ErrorTag tag) |
| : CachedObject(device, tag) { |
| } |
| |
| BindGroupLayoutBase::~BindGroupLayoutBase() { |
| // Do not uncache the actual cached object if we are a blueprint |
| if (IsCachedReference()) { |
| GetDevice()->UncacheBindGroupLayout(this); |
| } |
| } |
| |
| // static |
| BindGroupLayoutBase* BindGroupLayoutBase::MakeError(DeviceBase* device) { |
| return new BindGroupLayoutBase(device, ObjectBase::kError); |
| } |
| |
| const BindGroupLayoutBase::BindingMap& BindGroupLayoutBase::GetBindingMap() const { |
| ASSERT(!IsError()); |
| return mBindingMap; |
| } |
| |
| bool BindGroupLayoutBase::HasBinding(BindingNumber bindingNumber) const { |
| return mBindingMap.count(bindingNumber) != 0; |
| } |
| |
| BindingIndex BindGroupLayoutBase::GetBindingIndex(BindingNumber bindingNumber) const { |
| ASSERT(!IsError()); |
| const auto& it = mBindingMap.find(bindingNumber); |
| ASSERT(it != mBindingMap.end()); |
| return it->second; |
| } |
| |
| size_t BindGroupLayoutBase::ComputeContentHash() { |
| ObjectContentHasher recorder; |
| // std::map is sorted by key, so two BGLs constructed in different orders |
| // will still record the same. |
| for (const auto& it : mBindingMap) { |
| recorder.Record(it.first, it.second); |
| |
| const BindingInfo& info = mBindingInfo[it.second]; |
| |
| recorder.Record(info.buffer.hasDynamicOffset, info.visibility, info.bindingType, |
| info.buffer.type, info.buffer.minBindingSize, info.sampler.type, |
| info.texture.sampleType, info.texture.viewDimension, |
| info.texture.multisampled, info.storageTexture.access, |
| info.storageTexture.format, info.storageTexture.viewDimension); |
| } |
| |
| return recorder.GetContentHash(); |
| } |
| |
| bool BindGroupLayoutBase::EqualityFunc::operator()(const BindGroupLayoutBase* a, |
| const BindGroupLayoutBase* b) const { |
| if (a->GetBindingCount() != b->GetBindingCount()) { |
| return false; |
| } |
| for (BindingIndex i{0}; i < a->GetBindingCount(); ++i) { |
| if (a->mBindingInfo[i] != b->mBindingInfo[i]) { |
| return false; |
| } |
| } |
| return a->mBindingMap == b->mBindingMap; |
| } |
| |
| BindingIndex BindGroupLayoutBase::GetBindingCount() const { |
| return mBindingInfo.size(); |
| } |
| |
| BindingIndex BindGroupLayoutBase::GetBufferCount() const { |
| return BindingIndex(mBindingCounts.bufferCount); |
| } |
| |
| BindingIndex BindGroupLayoutBase::GetDynamicBufferCount() const { |
| // This is a binding index because dynamic buffers are packed at the front of the binding |
| // info. |
| return static_cast<BindingIndex>(mBindingCounts.dynamicStorageBufferCount + |
| mBindingCounts.dynamicUniformBufferCount); |
| } |
| |
| uint32_t BindGroupLayoutBase::GetUnverifiedBufferCount() const { |
| return mBindingCounts.unverifiedBufferCount; |
| } |
| |
| const BindingCounts& BindGroupLayoutBase::GetBindingCountInfo() const { |
| return mBindingCounts; |
| } |
| |
| size_t BindGroupLayoutBase::GetBindingDataSize() const { |
| // | ------ buffer-specific ----------| ------------ object pointers -------------| |
| // | --- offsets + sizes -------------| --------------- Ref<ObjectBase> ----------| |
| // Followed by: |
| // |---------buffer size array--------| |
| // |-uint64_t[mUnverifiedBufferCount]-| |
| size_t objectPointerStart = mBindingCounts.bufferCount * sizeof(BufferBindingData); |
| ASSERT(IsAligned(objectPointerStart, alignof(Ref<ObjectBase>))); |
| size_t bufferSizeArrayStart = |
| Align(objectPointerStart + mBindingCounts.totalCount * sizeof(Ref<ObjectBase>), |
| sizeof(uint64_t)); |
| ASSERT(IsAligned(bufferSizeArrayStart, alignof(uint64_t))); |
| return bufferSizeArrayStart + mBindingCounts.unverifiedBufferCount * sizeof(uint64_t); |
| } |
| |
| BindGroupLayoutBase::BindingDataPointers BindGroupLayoutBase::ComputeBindingDataPointers( |
| void* dataStart) const { |
| BufferBindingData* bufferData = reinterpret_cast<BufferBindingData*>(dataStart); |
| auto bindings = reinterpret_cast<Ref<ObjectBase>*>(bufferData + mBindingCounts.bufferCount); |
| uint64_t* unverifiedBufferSizes = AlignPtr( |
| reinterpret_cast<uint64_t*>(bindings + mBindingCounts.totalCount), sizeof(uint64_t)); |
| |
| ASSERT(IsPtrAligned(bufferData, alignof(BufferBindingData))); |
| ASSERT(IsPtrAligned(bindings, alignof(Ref<ObjectBase>))); |
| ASSERT(IsPtrAligned(unverifiedBufferSizes, alignof(uint64_t))); |
| |
| return {{bufferData, GetBufferCount()}, |
| {bindings, GetBindingCount()}, |
| {unverifiedBufferSizes, mBindingCounts.unverifiedBufferCount}}; |
| } |
| |
| } // namespace dawn_native |
