src/dawn/native/webgpu/SharedTextureMemoryWGPU.h

// Copyright 2026 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_WEBGPU_SHAREDTEXTUREMEMORYWGPU_H_
#define SRC_DAWN_NATIVE_WEBGPU_SHAREDTEXTUREMEMORYWGPU_H_

#include "dawn/native/Error.h"
#include "dawn/native/SharedTextureMemory.h"
#include "dawn/native/webgpu/ObjectWGPU.h"
#include "dawn/native/webgpu/RecordableObject.h"

namespace dawn::native::webgpu {

class Device;

class SharedTextureMemory final : public SharedTextureMemoryBase,
                                  public ObjectWGPU<WGPUSharedTextureMemory> {
  public:
    static ResultOrError<Ref<SharedTextureMemory>> Create(
        Device* device,
        const UnpackedPtr<SharedTextureMemoryDescriptor>& descriptor);

  private:
    SharedTextureMemory(Device* device,
                        StringView label,
                        WGPUSharedTextureMemory innerHandle,
                        const SharedTextureMemoryProperties& properties);

    void DestroyImpl(DestroyReason reason) override;

    ResultOrError<Ref<TextureBase>> CreateTextureImpl(
        const UnpackedPtr<TextureDescriptor>& descriptor) override;
    MaybeError BeginAccessImpl(TextureBase* texture,
                               const UnpackedPtr<BeginAccessDescriptor>& descriptor) override;
    ResultOrError<FenceAndSignalValue> EndAccessImpl(TextureBase* texture,
                                                     ExecutionSerial lastUsageSerial,
                                                     UnpackedPtr<EndAccessState>& state) override;

    void SetLabelImpl() override;

    // TODO(crbug.com/483147423): Handle all possible chained structures in EndAccessState.
    // For now we only handle Metal.
    wgpu::SharedTextureMemoryIOSurfaceDescriptor mIOSurfaceDesc = {};
};

}  // namespace dawn::native::webgpu

#endif  // SRC_DAWN_NATIVE_WEBGPU_SHAREDTEXTUREMEMORYWGPU_H_