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// Copyright 2019 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/PassResourceUsageTracker.h"
#include "dawn_native/BindGroup.h"
#include "dawn_native/Buffer.h"
#include "dawn_native/EnumMaskIterator.h"
#include "dawn_native/ExternalTexture.h"
#include "dawn_native/Format.h"
#include "dawn_native/QuerySet.h"
#include "dawn_native/Texture.h"
#include <utility>
namespace dawn_native {
void SyncScopeUsageTracker::BufferUsedAs(BufferBase* buffer, wgpu::BufferUsage usage) {
// std::map's operator[] will create the key and return 0 if the key didn't exist
// before.
mBufferUsages[buffer] |= usage;
}
void SyncScopeUsageTracker::TextureViewUsedAs(TextureViewBase* view, wgpu::TextureUsage usage) {
TextureBase* texture = view->GetTexture();
const SubresourceRange& range = view->GetSubresourceRange();
// Get or create a new TextureSubresourceUsage for that texture (initially filled with
// wgpu::TextureUsage::None)
auto it = mTextureUsages.emplace(
std::piecewise_construct, std::forward_as_tuple(texture),
std::forward_as_tuple(texture->GetFormat().aspects, texture->GetArrayLayers(),
texture->GetNumMipLevels(), wgpu::TextureUsage::None));
TextureSubresourceUsage& textureUsage = it.first->second;
textureUsage.Update(range,
[usage](const SubresourceRange&, wgpu::TextureUsage* storedUsage) {
// TODO(crbug.com/dawn/1001): Consider optimizing to have fewer
// branches.
if ((*storedUsage & wgpu::TextureUsage::RenderAttachment) != 0 &&
(usage & wgpu::TextureUsage::RenderAttachment) != 0) {
// Using the same subresource as an attachment for two different
// render attachments is a write-write hazard. Add this internal
// usage so we will fail the check that a subresource with
// writable usage is the single usage.
*storedUsage |= kAgainAsRenderAttachment;
}
*storedUsage |= usage;
});
}
void SyncScopeUsageTracker::AddRenderBundleTextureUsage(
TextureBase* texture,
const TextureSubresourceUsage& textureUsage) {
// Get or create a new TextureSubresourceUsage for that texture (initially filled with
// wgpu::TextureUsage::None)
auto it = mTextureUsages.emplace(
std::piecewise_construct, std::forward_as_tuple(texture),
std::forward_as_tuple(texture->GetFormat().aspects, texture->GetArrayLayers(),
texture->GetNumMipLevels(), wgpu::TextureUsage::None));
TextureSubresourceUsage* passTextureUsage = &it.first->second;
passTextureUsage->Merge(
textureUsage, [](const SubresourceRange&, wgpu::TextureUsage* storedUsage,
const wgpu::TextureUsage& addedUsage) {
ASSERT((addedUsage & wgpu::TextureUsage::RenderAttachment) == 0);
*storedUsage |= addedUsage;
});
}
void SyncScopeUsageTracker::AddBindGroup(BindGroupBase* group) {
for (BindingIndex bindingIndex{0}; bindingIndex < group->GetLayout()->GetBindingCount();
++bindingIndex) {
const BindingInfo& bindingInfo = group->GetLayout()->GetBindingInfo(bindingIndex);
switch (bindingInfo.bindingType) {
case BindingInfoType::Buffer: {
BufferBase* buffer = group->GetBindingAsBufferBinding(bindingIndex).buffer;
switch (bindingInfo.buffer.type) {
case wgpu::BufferBindingType::Uniform:
BufferUsedAs(buffer, wgpu::BufferUsage::Uniform);
break;
case wgpu::BufferBindingType::Storage:
BufferUsedAs(buffer, wgpu::BufferUsage::Storage);
break;
case kInternalStorageBufferBinding:
BufferUsedAs(buffer, kInternalStorageBuffer);
break;
case wgpu::BufferBindingType::ReadOnlyStorage:
BufferUsedAs(buffer, kReadOnlyStorageBuffer);
break;
case wgpu::BufferBindingType::Undefined:
UNREACHABLE();
}
break;
}
case BindingInfoType::Texture: {
TextureViewBase* view = group->GetBindingAsTextureView(bindingIndex);
TextureViewUsedAs(view, wgpu::TextureUsage::Sampled);
break;
}
case BindingInfoType::StorageTexture: {
TextureViewBase* view = group->GetBindingAsTextureView(bindingIndex);
switch (bindingInfo.storageTexture.access) {
case wgpu::StorageTextureAccess::ReadOnly:
TextureViewUsedAs(view, kReadOnlyStorageTexture);
break;
case wgpu::StorageTextureAccess::WriteOnly:
TextureViewUsedAs(view, wgpu::TextureUsage::Storage);
break;
case wgpu::StorageTextureAccess::Undefined:
UNREACHABLE();
}
break;
}
case BindingInfoType::ExternalTexture: {
ExternalTextureBase* externalTexture =
group->GetBindingAsExternalTexture(bindingIndex);
const std::array<Ref<TextureViewBase>, kMaxPlanesPerFormat>& textureViews =
externalTexture->GetTextureViews();
// Only single-plane formats are supported right now, so assert only one
// view exists.
ASSERT(textureViews[1].Get() == nullptr);
ASSERT(textureViews[2].Get() == nullptr);
mExternalTextureUsages.insert(externalTexture);
TextureViewUsedAs(textureViews[0].Get(), wgpu::TextureUsage::Sampled);
break;
}
case BindingInfoType::Sampler:
break;
}
}
}
SyncScopeResourceUsage SyncScopeUsageTracker::AcquireSyncScopeUsage() {
SyncScopeResourceUsage result;
result.buffers.reserve(mBufferUsages.size());
result.bufferUsages.reserve(mBufferUsages.size());
result.textures.reserve(mTextureUsages.size());
result.textureUsages.reserve(mTextureUsages.size());
for (auto& it : mBufferUsages) {
result.buffers.push_back(it.first);
result.bufferUsages.push_back(it.second);
}
for (auto& it : mTextureUsages) {
result.textures.push_back(it.first);
result.textureUsages.push_back(std::move(it.second));
}
for (auto& it : mExternalTextureUsages) {
result.externalTextures.push_back(it);
}
mBufferUsages.clear();
mTextureUsages.clear();
mExternalTextureUsages.clear();
return result;
}
void ComputePassResourceUsageTracker::AddDispatch(SyncScopeResourceUsage scope) {
mUsage.dispatchUsages.push_back(std::move(scope));
}
void ComputePassResourceUsageTracker::AddReferencedBuffer(BufferBase* buffer) {
mUsage.referencedBuffers.insert(buffer);
}
void ComputePassResourceUsageTracker::AddResourcesReferencedByBindGroup(BindGroupBase* group) {
for (BindingIndex index{0}; index < group->GetLayout()->GetBindingCount(); ++index) {
const BindingInfo& bindingInfo = group->GetLayout()->GetBindingInfo(index);
switch (bindingInfo.bindingType) {
case BindingInfoType::Buffer: {
mUsage.referencedBuffers.insert(group->GetBindingAsBufferBinding(index).buffer);
break;
}
case BindingInfoType::Texture: {
mUsage.referencedTextures.insert(
group->GetBindingAsTextureView(index)->GetTexture());
break;
}
case BindingInfoType::ExternalTexture: {
ExternalTextureBase* externalTexture =
group->GetBindingAsExternalTexture(index);
const std::array<Ref<TextureViewBase>, kMaxPlanesPerFormat>& textureViews =
externalTexture->GetTextureViews();
// Only single-plane formats are supported right now, so assert only one
// view exists.
ASSERT(textureViews[1].Get() == nullptr);
ASSERT(textureViews[2].Get() == nullptr);
mUsage.referencedExternalTextures.insert(externalTexture);
mUsage.referencedTextures.insert(textureViews[0].Get()->GetTexture());
break;
}
case BindingInfoType::StorageTexture:
case BindingInfoType::Sampler:
break;
}
}
}
ComputePassResourceUsage ComputePassResourceUsageTracker::AcquireResourceUsage() {
return std::move(mUsage);
}
RenderPassResourceUsage RenderPassResourceUsageTracker::AcquireResourceUsage() {
RenderPassResourceUsage result;
*static_cast<SyncScopeResourceUsage*>(&result) = AcquireSyncScopeUsage();
result.querySets.reserve(mQueryAvailabilities.size());
result.queryAvailabilities.reserve(mQueryAvailabilities.size());
for (auto& it : mQueryAvailabilities) {
result.querySets.push_back(it.first);
result.queryAvailabilities.push_back(std::move(it.second));
}
mQueryAvailabilities.clear();
return result;
}
void RenderPassResourceUsageTracker::TrackQueryAvailability(QuerySetBase* querySet,
uint32_t queryIndex) {
// The query availability only needs to be tracked again on render passes for checking
// query overwrite on render pass and resetting query sets on the Vulkan backend.
DAWN_ASSERT(querySet != nullptr);
// Gets the iterator for that querySet or create a new vector of bool set to false
// if the querySet wasn't registered.
auto it = mQueryAvailabilities.emplace(querySet, querySet->GetQueryCount()).first;
it->second[queryIndex] = true;
}
const QueryAvailabilityMap& RenderPassResourceUsageTracker::GetQueryAvailabilityMap() const {
return mQueryAvailabilities;
}
} // namespace dawn_native