14e5d5dc22
Store last submitted TextureId in PresentationData for getting front buffer snapshot. WebGPUParent::RecvQueueSubmit() stores the latest TextureId in the swap chain in PresentationData::LastSubmittedTextureId. To do so, it retrieves the OwnerId from ExternalTexture. Next, get PresentationData from OwnerId. If readback is required, it is performed synchronously. Its implementation is borrowed from WebGPUParent::RecvSwapChainPresent(). Differential Revision: https://phabricator.services.mozilla.com/D233473
101 lines
3.1 KiB
C++
101 lines
3.1 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef ExternalTexture_H_
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#define ExternalTexture_H_
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#include "mozilla/gfx/Point.h"
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#include "mozilla/layers/LayersSurfaces.h"
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#include "mozilla/webgpu/ffi/wgpu.h"
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#include "mozilla/webgpu/WebGPUTypes.h"
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namespace mozilla {
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namespace ipc {
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class Shmem;
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}
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namespace webgpu {
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class ExternalTextureDMABuf;
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class ExternalTextureMacIOSurface;
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class WebGPUParent;
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// A texture that can be used by the WebGPU implementation but is created and
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// owned by Gecko
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class ExternalTexture {
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public:
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static UniquePtr<ExternalTexture> Create(
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WebGPUParent* aParent, const ffi::WGPUDeviceId aDeviceId,
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const uint32_t aWidth, const uint32_t aHeight,
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const struct ffi::WGPUTextureFormat aFormat,
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const ffi::WGPUTextureUsages aUsage);
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ExternalTexture(const uint32_t aWidth, const uint32_t aHeight,
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const struct ffi::WGPUTextureFormat aFormat,
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const ffi::WGPUTextureUsages aUsage);
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virtual ~ExternalTexture();
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virtual void* GetExternalTextureHandle() { return nullptr; }
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virtual Maybe<layers::SurfaceDescriptor> ToSurfaceDescriptor(
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Maybe<gfx::FenceInfo>& aFenceInfo) = 0;
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virtual void GetSnapshot(const ipc::Shmem& aDestShmem,
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const gfx::IntSize& aSize) {}
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virtual ExternalTextureDMABuf* AsExternalTextureDMABuf() { return nullptr; }
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virtual ExternalTextureMacIOSurface* AsExternalTextureMacIOSurface() {
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return nullptr;
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}
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gfx::IntSize GetSize() { return gfx::IntSize(mWidth, mHeight); }
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void SetSubmissionIndex(uint64_t aSubmissionIndex);
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uint64_t GetSubmissionIndex() const { return mSubmissionIndex; }
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void SetOwnerId(const layers::RemoteTextureOwnerId aOwnerId) {
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mOwnerId = aOwnerId;
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}
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layers::RemoteTextureOwnerId GetOwnerId() const {
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MOZ_ASSERT(mOwnerId.IsValid());
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return mOwnerId;
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}
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const uint32_t mWidth;
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const uint32_t mHeight;
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const struct ffi::WGPUTextureFormat mFormat;
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const ffi::WGPUTextureUsages mUsage;
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protected:
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uint64_t mSubmissionIndex = 0;
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layers::RemoteTextureOwnerId mOwnerId;
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};
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// Dummy class
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class ExternalTextureReadBackPresent final : public ExternalTexture {
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public:
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static UniquePtr<ExternalTextureReadBackPresent> Create(
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const uint32_t aWidth, const uint32_t aHeight,
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const struct ffi::WGPUTextureFormat aFormat,
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const ffi::WGPUTextureUsages aUsage);
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ExternalTextureReadBackPresent(const uint32_t aWidth, const uint32_t aHeight,
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const struct ffi::WGPUTextureFormat aFormat,
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const ffi::WGPUTextureUsages aUsage);
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virtual ~ExternalTextureReadBackPresent();
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Maybe<layers::SurfaceDescriptor> ToSurfaceDescriptor(
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Maybe<gfx::FenceInfo>& aFenceInfo) override {
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return Nothing();
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}
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};
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} // namespace webgpu
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} // namespace mozilla
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#endif // GPU_ExternalTexture_H_
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