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// Copyright 2018 The Dawn & Tint Authors
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef SRC_DAWN_NATIVE_PASSRESOURCEUSAGE_H_
#define SRC_DAWN_NATIVE_PASSRESOURCEUSAGE_H_
#include <set>
#include <vector>
#include "dawn/native/SubresourceStorage.h"
#include "dawn/native/dawn_platform.h"
namespace dawn::native {
// This file declares various "ResourceUsage" structures. They are produced by the frontend
// while recording commands to be used for later validation and also some operations in the
// backends. The are produced by the "Encoder" objects that finalize them on "EndPass" or
// "Finish". Internally the "Encoder" may use the "StateTracker" to create them.
class BufferBase;
class QuerySetBase;
class TextureBase;
// Info about how a buffer is used and in which shader stages
struct BufferSyncInfo {
wgpu::BufferUsage usage = wgpu::BufferUsage::None;
wgpu::ShaderStage shaderStages = wgpu::ShaderStage::None;
};
// Info about how a texture is used and in which shader stages
// TODO(crbug.com/dawn/851): Optimize by merging into one u32?
struct TextureSyncInfo {
wgpu::TextureUsage usage = wgpu::TextureUsage::None;
wgpu::ShaderStage shaderStages = wgpu::ShaderStage::None;
};
bool operator==(const TextureSyncInfo& a, const TextureSyncInfo& b);
// The texture usage inside passes must be tracked per-subresource.
using TextureSubresourceSyncInfo = SubresourceStorage<TextureSyncInfo>;
// Which resources are used by a synchronization scope and how they are used. The command
// buffer validation pre-computes this information so that backends with explicit barriers
// don't have to re-compute it.
struct SyncScopeResourceUsage {
std::vector<BufferBase*> buffers;
std::vector<BufferSyncInfo> bufferSyncInfos;
std::vector<TextureBase*> textures;
std::vector<TextureSubresourceSyncInfo> textureSyncInfos;
std::vector<ExternalTextureBase*> externalTextures;
};
// Contains all the resource usage data for a compute pass.
//
// Essentially a list of SyncScopeResourceUsage, one per Dispatch as required by the WebGPU
// specification. ComputePassResourceUsage also stores nline the set of all buffers and
// textures used, because some unused BindGroups may not be used at all in synchronization
// scope but their resources still need to be validated on Queue::Submit.
struct ComputePassResourceUsage {
// Somehow without this defaulted constructor, MSVC or its STDlib have an issue where they
// use the copy constructor (that's deleted) when doing operations on a
// vector<ComputePassResourceUsage>
ComputePassResourceUsage(ComputePassResourceUsage&&);
ComputePassResourceUsage();
std::vector<SyncScopeResourceUsage> dispatchUsages;
// All the resources referenced by this compute pass for validation in Queue::Submit.
std::set<BufferBase*> referencedBuffers;
std::set<TextureBase*> referencedTextures;
std::set<ExternalTextureBase*> referencedExternalTextures;
};
// Contains all the resource usage data for a render pass.
//
// In the WebGPU specification render passes are synchronization scopes but we also need to
// track additional data. It is stored for render passes used by a CommandBuffer, but also in
// RenderBundle so they can be merged into the render passes' usage on ExecuteBundles().
struct RenderPassResourceUsage : public SyncScopeResourceUsage {
// Storage to track the occlusion queries used during the pass.
std::vector<QuerySetBase*> querySets;
std::vector<std::vector<bool>> queryAvailabilities;
};
using RenderPassUsages = std::vector<RenderPassResourceUsage>;
using ComputePassUsages = std::vector<ComputePassResourceUsage>;
// Contains a hierarchy of "ResourceUsage" that mirrors the hierarchy of the CommandBuffer and
// is used for validation and to produce barriers and lazy clears in the backends.
struct CommandBufferResourceUsage {
RenderPassUsages renderPasses;
ComputePassUsages computePasses;
// Resources used in commands that aren't in a pass.
std::set<BufferBase*> topLevelBuffers;
std::set<TextureBase*> topLevelTextures;
std::set<QuerySetBase*> usedQuerySets;
};
} // namespace dawn::native
#endif // SRC_DAWN_NATIVE_PASSRESOURCEUSAGE_H_