forked from mirrors/gecko-dev
3021defc28
This change adds support for CanvasContext presenting WebGPU via CPU readback. The presentation is handled mostly on GPU process side by managing a list of staging buffers and copying the contents into a WR external image (backed by an external buffer). Differential Revision: https://phabricator.services.mozilla.com/D68032 --HG-- extra : moz-landing-system : lando
49 lines
1.5 KiB
C++
49 lines
1.5 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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#include "SwapChain.h"
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#include "Texture.h"
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namespace mozilla {
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namespace webgpu {
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GPU_IMPL_CYCLE_COLLECTION(SwapChain, mParent, mTexture)
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GPU_IMPL_JS_WRAP(SwapChain)
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SwapChain::SwapChain(const dom::GPUSwapChainDescriptor& aDesc,
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const dom::GPUExtent3DDict& aExtent3D,
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wr::ExternalImageId aExternalImageId,
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gfx::SurfaceFormat aFormat)
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: ChildOf(aDesc.mDevice),
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mFormat(aFormat),
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mTexture(aDesc.mDevice->InitSwapChain(aDesc, aExtent3D, aExternalImageId,
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aFormat)) {}
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SwapChain::~SwapChain() { Cleanup(); }
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void SwapChain::Cleanup() {
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if (mValid) {
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mValid = false;
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}
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}
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WebGPUChild* SwapChain::GetGpuBridge() const {
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return mParent ? mParent->GetBridge().get() : nullptr;
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}
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void SwapChain::Destroy(wr::ExternalImageId aExternalImageId) {
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if (mValid && mParent && mParent->GetBridge()) {
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mValid = false;
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auto bridge = mParent->GetBridge();
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if (bridge && bridge->IsOpen()) {
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bridge->SendSwapChainDestroy(aExternalImageId);
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}
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}
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}
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RefPtr<Texture> SwapChain::GetCurrentTexture() { return mTexture; }
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} // namespace webgpu
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} // namespace mozilla
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