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// Copyright 2021 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_EXTERNALTEXTURE_H_
#define DAWNNATIVE_EXTERNALTEXTURE_H_
#include "dawn/native/Error.h"
#include "dawn/native/Forward.h"
#include "dawn/native/ObjectBase.h"
#include "dawn/native/Subresource.h"
#include <array>
namespace dawn::native {
class TextureViewBase;
struct ExternalTextureParams {
uint32_t numPlanes;
float vr;
float vg;
float ub;
float ug;
};
MaybeError ValidateExternalTextureDescriptor(const DeviceBase* device,
const ExternalTextureDescriptor* descriptor);
class ExternalTextureBase : public ApiObjectBase {
public:
static ResultOrError<Ref<ExternalTextureBase>> Create(
DeviceBase* device,
const ExternalTextureDescriptor* descriptor);
BufferBase* GetParamsBuffer() const;
const std::array<Ref<TextureViewBase>, kMaxPlanesPerFormat>& GetTextureViews() const;
ObjectType GetType() const override;
MaybeError ValidateCanUseInSubmitNow() const;
static ExternalTextureBase* MakeError(DeviceBase* device);
void APIDestroy();
protected:
// Constructor used only for mocking and testing.
ExternalTextureBase(DeviceBase* device);
void DestroyImpl() override;
~ExternalTextureBase() override;
private:
ExternalTextureBase(DeviceBase* device, const ExternalTextureDescriptor* descriptor);
enum class ExternalTextureState { Alive, Destroyed };
ExternalTextureBase(DeviceBase* device, ObjectBase::ErrorTag tag);
MaybeError Initialize(DeviceBase* device, const ExternalTextureDescriptor* descriptor);
Ref<TextureBase> mDummyTexture;
Ref<BufferBase> mParamsBuffer;
std::array<Ref<TextureViewBase>, kMaxPlanesPerFormat> mTextureViews;
ExternalTextureState mState;
};
} // namespace dawn::native
#endif // DAWNNATIVE_EXTERNALTEXTURE_H_