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// 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.
#ifndef DAWNNATIVE_NULL_DEVICENULL_H_
#define DAWNNATIVE_NULL_DEVICENULL_H_
#include "dawn_native/Adapter.h"
#include "dawn_native/BindGroup.h"
#include "dawn_native/BindGroupLayout.h"
#include "dawn_native/Buffer.h"
#include "dawn_native/CommandBuffer.h"
#include "dawn_native/CommandEncoder.h"
#include "dawn_native/ComputePipeline.h"
#include "dawn_native/Device.h"
#include "dawn_native/PipelineLayout.h"
#include "dawn_native/QuerySet.h"
#include "dawn_native/Queue.h"
#include "dawn_native/RenderPipeline.h"
#include "dawn_native/RingBufferAllocator.h"
#include "dawn_native/Sampler.h"
#include "dawn_native/ShaderModule.h"
#include "dawn_native/StagingBuffer.h"
#include "dawn_native/SwapChain.h"
#include "dawn_native/Texture.h"
#include "dawn_native/ToBackend.h"
#include "dawn_native/dawn_platform.h"
namespace dawn_native { namespace null {
class Adapter;
class BindGroup;
using BindGroupLayout = BindGroupLayoutBase;
class Buffer;
class CommandBuffer;
using ComputePipeline = ComputePipelineBase;
class Device;
using PipelineLayout = PipelineLayoutBase;
class QuerySet;
class Queue;
using RenderPipeline = RenderPipelineBase;
using Sampler = SamplerBase;
using ShaderModule = ShaderModuleBase;
class SwapChain;
using Texture = TextureBase;
using TextureView = TextureViewBase;
struct NullBackendTraits {
using AdapterType = Adapter;
using BindGroupType = BindGroup;
using BindGroupLayoutType = BindGroupLayout;
using BufferType = Buffer;
using CommandBufferType = CommandBuffer;
using ComputePipelineType = ComputePipeline;
using DeviceType = Device;
using PipelineLayoutType = PipelineLayout;
using QuerySetType = QuerySet;
using QueueType = Queue;
using RenderPipelineType = RenderPipeline;
using SamplerType = Sampler;
using ShaderModuleType = ShaderModule;
using SwapChainType = SwapChain;
using TextureType = Texture;
using TextureViewType = TextureView;
};
template <typename T>
auto ToBackend(T&& common) -> decltype(ToBackendBase<NullBackendTraits>(common)) {
return ToBackendBase<NullBackendTraits>(common);
}
struct PendingOperation {
virtual ~PendingOperation() = default;
virtual void Execute() = 0;
};
class Device : public DeviceBase {
public:
static ResultOrError<Device*> Create(Adapter* adapter, const DeviceDescriptor* descriptor);
~Device() override;
MaybeError Initialize();
CommandBufferBase* CreateCommandBuffer(CommandEncoder* encoder,
const CommandBufferDescriptor* descriptor) override;
MaybeError TickImpl() override;
void AddPendingOperation(std::unique_ptr<PendingOperation> operation);
void SubmitPendingOperations();
ResultOrError<std::unique_ptr<StagingBufferBase>> CreateStagingBuffer(size_t size) override;
MaybeError CopyFromStagingToBuffer(StagingBufferBase* source,
uint64_t sourceOffset,
BufferBase* destination,
uint64_t destinationOffset,
uint64_t size) override;
MaybeError IncrementMemoryUsage(size_t bytes);
void DecrementMemoryUsage(size_t bytes);
private:
using DeviceBase::DeviceBase;
ResultOrError<BindGroupBase*> CreateBindGroupImpl(
const BindGroupDescriptor* descriptor) override;
ResultOrError<BindGroupLayoutBase*> CreateBindGroupLayoutImpl(
const BindGroupLayoutDescriptor* descriptor) override;
ResultOrError<BufferBase*> CreateBufferImpl(const BufferDescriptor* descriptor) override;
ResultOrError<ComputePipelineBase*> CreateComputePipelineImpl(
const ComputePipelineDescriptor* descriptor) override;
ResultOrError<PipelineLayoutBase*> CreatePipelineLayoutImpl(
const PipelineLayoutDescriptor* descriptor) override;
ResultOrError<QuerySetBase*> CreateQuerySetImpl(
const QuerySetDescriptor* descriptor) override;
ResultOrError<RenderPipelineBase*> CreateRenderPipelineImpl(
const RenderPipelineDescriptor* descriptor) override;
ResultOrError<SamplerBase*> CreateSamplerImpl(const SamplerDescriptor* descriptor) override;
ResultOrError<ShaderModuleBase*> CreateShaderModuleImpl(
const ShaderModuleDescriptor* descriptor) override;
ResultOrError<SwapChainBase*> CreateSwapChainImpl(
const SwapChainDescriptor* descriptor) override;
ResultOrError<NewSwapChainBase*> CreateSwapChainImpl(
Surface* surface,
NewSwapChainBase* previousSwapChain,
const SwapChainDescriptor* descriptor) override;
ResultOrError<Ref<TextureBase>> CreateTextureImpl(
const TextureDescriptor* descriptor) override;
ResultOrError<TextureViewBase*> CreateTextureViewImpl(
TextureBase* texture,
const TextureViewDescriptor* descriptor) override;
Serial CheckAndUpdateCompletedSerials() override;
void ShutDownImpl() override;
MaybeError WaitForIdleForDestruction() override;
std::vector<std::unique_ptr<PendingOperation>> mPendingOperations;
static constexpr size_t kMaxMemoryUsage = 256 * 1024 * 1024;
size_t mMemoryUsage = 0;
};
class Adapter : public AdapterBase {
public:
Adapter(InstanceBase* instance);
~Adapter() override;
// Used for the tests that intend to use an adapter without all extensions enabled.
void SetSupportedExtensions(const std::vector<const char*>& requiredExtensions);
private:
ResultOrError<DeviceBase*> CreateDeviceImpl(const DeviceDescriptor* descriptor) override;
};
// Helper class so |BindGroup| can allocate memory for its binding data,
// before calling the BindGroupBase base class constructor.
class BindGroupDataHolder {
protected:
explicit BindGroupDataHolder(size_t size);
~BindGroupDataHolder();
void* mBindingDataAllocation;
};
// We don't have the complexity of placement-allocation of bind group data in
// the Null backend. This class, keeps the binding data in a separate allocation for simplicity.
class BindGroup final : private BindGroupDataHolder, public BindGroupBase {
public:
BindGroup(DeviceBase* device, const BindGroupDescriptor* descriptor);
private:
~BindGroup() override = default;
};
class Buffer final : public BufferBase {
public:
Buffer(Device* device, const BufferDescriptor* descriptor);
void CopyFromStaging(StagingBufferBase* staging,
uint64_t sourceOffset,
uint64_t destinationOffset,
uint64_t size);
void DoWriteBuffer(uint64_t bufferOffset, const void* data, size_t size);
private:
~Buffer() override;
// Dawn API
MaybeError MapReadAsyncImpl(uint32_t serial) override;
MaybeError MapWriteAsyncImpl(uint32_t serial) override;
void UnmapImpl() override;
void DestroyImpl() override;
bool IsMapWritable() const override;
MaybeError MapAtCreationImpl(uint8_t** mappedPointer) override;
void MapAsyncImplCommon(uint32_t serial, bool isWrite);
void* GetMappedPointerImpl() override;
std::unique_ptr<uint8_t[]> mBackingData;
};
class CommandBuffer final : public CommandBufferBase {
public:
CommandBuffer(CommandEncoder* encoder, const CommandBufferDescriptor* descriptor);
private:
~CommandBuffer() override;
CommandIterator mCommands;
};
class QuerySet final : public QuerySetBase {
public:
QuerySet(Device* device, const QuerySetDescriptor* descriptor);
private:
~QuerySet() override;
void DestroyImpl() override;
};
class Queue final : public QueueBase {
public:
Queue(Device* device);
private:
~Queue() override;
MaybeError SubmitImpl(uint32_t commandCount, CommandBufferBase* const* commands) override;
MaybeError WriteBufferImpl(BufferBase* buffer,
uint64_t bufferOffset,
const void* data,
size_t size) override;
};
class SwapChain final : public NewSwapChainBase {
public:
SwapChain(Device* device,
Surface* surface,
NewSwapChainBase* previousSwapChain,
const SwapChainDescriptor* descriptor);
private:
~SwapChain() override;
Ref<Texture> mTexture;
MaybeError PresentImpl() override;
ResultOrError<TextureViewBase*> GetCurrentTextureViewImpl() override;
void DetachFromSurfaceImpl() override;
};
class OldSwapChain final : public OldSwapChainBase {
public:
OldSwapChain(Device* device, const SwapChainDescriptor* descriptor);
protected:
~OldSwapChain() override;
TextureBase* GetNextTextureImpl(const TextureDescriptor* descriptor) override;
MaybeError OnBeforePresent(TextureViewBase*) override;
};
class NativeSwapChainImpl {
public:
using WSIContext = struct {};
void Init(WSIContext* context);
DawnSwapChainError Configure(WGPUTextureFormat format,
WGPUTextureUsage,
uint32_t width,
uint32_t height);
DawnSwapChainError GetNextTexture(DawnSwapChainNextTexture* nextTexture);
DawnSwapChainError Present();
wgpu::TextureFormat GetPreferredFormat() const;
};
class StagingBuffer : public StagingBufferBase {
public:
StagingBuffer(size_t size, Device* device);
~StagingBuffer() override;
MaybeError Initialize() override;
private:
Device* mDevice;
std::unique_ptr<uint8_t[]> mBuffer;
};
}} // namespace dawn_native::null
#endif // DAWNNATIVE_NULL_DEVICENULL_H_