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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
#ifndef ExternalTexture_H_
#define ExternalTexture_H_
#include "nsIGlobalObject.h"
#include "ObjectModel.h"
#include "mozilla/gfx/Point.h"
#include "mozilla/layers/LayersSurfaces.h"
#include "mozilla/webgpu/ffi/wgpu.h"
#include "mozilla/webgpu/WebGPUTypes.h"
namespace mozilla {
namespace ipc {
class Shmem;
}
namespace webgpu {
// NOTE: Incomplete, and needs to be reconciled with the existing
// `ExternalTexture`, which is used by and for internals that handle compositor
// textures.
//
// Follow-up to complete implementation is at
class ExtTex : public ObjectBase {
public:
GPU_DECL_CYCLE_COLLECTION(ExtTex)
GPU_DECL_JS_WRAP(ExtTex)
explicit ExtTex(nsIGlobalObject* const aGlobal) : mGlobal(aGlobal) {}
nsIGlobalObject* GetParentObject() const { return mGlobal; }
private:
nsCOMPtr<nsIGlobalObject> mGlobal;
~ExtTex() = default;
void Cleanup() {}
};
class ExternalTextureD3D11;
class ExternalTextureDMABuf;
class ExternalTextureMacIOSurface;
class WebGPUParent;
// A texture that can be used by the WebGPU implementation but is created and
// owned by Gecko
class ExternalTexture {
public:
static UniquePtr<ExternalTexture> Create(
WebGPUParent* aParent, const ffi::WGPUDeviceId aDeviceId,
const uint32_t aWidth, const uint32_t aHeight,
const struct ffi::WGPUTextureFormat aFormat,
const ffi::WGPUTextureUsages aUsage);
ExternalTexture(const uint32_t aWidth, const uint32_t aHeight,
const struct ffi::WGPUTextureFormat aFormat,
const ffi::WGPUTextureUsages aUsage);
virtual ~ExternalTexture();
virtual Maybe<layers::SurfaceDescriptor> ToSurfaceDescriptor() = 0;
virtual void GetSnapshot(const ipc::Shmem& aDestShmem,
const gfx::IntSize& aSize) {}
virtual ExternalTextureDMABuf* AsExternalTextureDMABuf() { return nullptr; }
virtual ExternalTextureMacIOSurface* AsExternalTextureMacIOSurface() {
return nullptr;
}
virtual ExternalTextureD3D11* AsExternalTextureD3D11() { return nullptr; }
gfx::IntSize GetSize() { return gfx::IntSize(mWidth, mHeight); }
void SetSubmissionIndex(uint64_t aSubmissionIndex);
uint64_t GetSubmissionIndex() const { return mSubmissionIndex; }
void SetOwnerId(const layers::RemoteTextureOwnerId aOwnerId) {
mOwnerId = aOwnerId;
}
layers::RemoteTextureOwnerId GetOwnerId() const {
MOZ_ASSERT(mOwnerId.IsValid());
return mOwnerId;
}
virtual void onBeforeQueueSubmit(RawId aQueueId) {}
const uint32_t mWidth;
const uint32_t mHeight;
const struct ffi::WGPUTextureFormat mFormat;
const ffi::WGPUTextureUsages mUsage;
protected:
uint64_t mSubmissionIndex = 0;
layers::RemoteTextureOwnerId mOwnerId;
};
// Dummy class
class ExternalTextureReadBackPresent final : public ExternalTexture {
public:
static UniquePtr<ExternalTextureReadBackPresent> Create(
const uint32_t aWidth, const uint32_t aHeight,
const struct ffi::WGPUTextureFormat aFormat,
const ffi::WGPUTextureUsages aUsage);
ExternalTextureReadBackPresent(const uint32_t aWidth, const uint32_t aHeight,
const struct ffi::WGPUTextureFormat aFormat,
const ffi::WGPUTextureUsages aUsage);
virtual ~ExternalTextureReadBackPresent();
Maybe<layers::SurfaceDescriptor> ToSurfaceDescriptor() override {
return Nothing();
}
};
} // namespace webgpu
} // namespace mozilla
#endif // GPU_ExternalTexture_H_