зеркало из https://github.com/mozilla/gecko-dev.git
130 строки
3.5 KiB
C++
130 строки
3.5 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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 "CanvasRenderer.h"
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#include "BuildConstants.h"
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#include "ipc/KnowsCompositor.h"
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#include "mozilla/gfx/gfxVars.h"
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#include "mozilla/StaticPrefs_webgl.h"
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#include "nsICanvasRenderingContextInternal.h"
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#include "PersistentBufferProvider.h"
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#include "WebGLTypes.h"
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namespace mozilla {
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namespace layers {
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CanvasRendererData::CanvasRendererData() = default;
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CanvasRendererData::~CanvasRendererData() = default;
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// -
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BorrowedSourceSurface::BorrowedSourceSurface(
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PersistentBufferProvider* const returnTo,
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const RefPtr<gfx::SourceSurface> surf)
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: mReturnTo(returnTo), mSurf(surf) {}
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BorrowedSourceSurface::~BorrowedSourceSurface() {
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if (mReturnTo) {
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auto forgettable = mSurf;
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mReturnTo->ReturnSnapshot(forgettable.forget());
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}
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}
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// -
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CanvasRenderer::CanvasRenderer() { MOZ_COUNT_CTOR(CanvasRenderer); }
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CanvasRenderer::~CanvasRenderer() { MOZ_COUNT_DTOR(CanvasRenderer); }
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void CanvasRenderer::Initialize(const CanvasRendererData& aData) {
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mData = aData;
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}
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bool CanvasRenderer::IsDataValid(const CanvasRendererData& aData) const {
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return mData.GetContext() == aData.GetContext();
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}
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std::shared_ptr<BorrowedSourceSurface> CanvasRenderer::BorrowSnapshot(
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const bool requireAlphaPremult) const {
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const auto context = mData.GetContext();
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if (!context) return nullptr;
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RefPtr<PersistentBufferProvider> provider = context->GetBufferProvider();
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RefPtr<gfx::SourceSurface> ss;
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if (provider) {
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ss = provider->BorrowSnapshot();
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}
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if (!ss) {
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provider = nullptr;
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ss = context->GetFrontBufferSnapshot(requireAlphaPremult);
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}
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if (!ss) return nullptr;
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return std::make_shared<BorrowedSourceSurface>(provider, ss);
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}
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void CanvasRenderer::FirePreTransactionCallback() const {
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if (!mData.mDoPaintCallbacks) return;
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const auto context = mData.GetContext();
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if (!context) return;
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context->OnBeforePaintTransaction();
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}
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void CanvasRenderer::FireDidTransactionCallback() const {
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if (!mData.mDoPaintCallbacks) return;
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const auto context = mData.GetContext();
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if (!context) return;
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context->OnDidPaintTransaction();
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}
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TextureType TexTypeForWebgl(KnowsCompositor* const knowsCompositor) {
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if (!knowsCompositor) return TextureType::Unknown;
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const auto layersBackend = knowsCompositor->GetCompositorBackendType();
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switch (layersBackend) {
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case LayersBackend::LAYERS_LAST:
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MOZ_CRASH("Unexpected LayersBackend::LAYERS_LAST");
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case LayersBackend::LAYERS_NONE:
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return TextureType::Unknown;
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case LayersBackend::LAYERS_WR:
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break;
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}
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if (kIsWindows) {
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if (knowsCompositor->SupportsD3D11()) {
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return TextureType::D3D11;
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}
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return TextureType::Unknown;
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}
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if (kIsMacOS) {
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return TextureType::MacIOSurface;
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}
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if (kIsWayland) {
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if (knowsCompositor->UsingSoftwareWebRender()) {
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return TextureType::Unknown;
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}
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return TextureType::DMABUF;
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}
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if (kIsAndroid) {
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if (gfx::gfxVars::UseAHardwareBufferSharedSurface()) {
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return TextureType::AndroidHardwareBuffer;
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}
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if (StaticPrefs::webgl_enable_surface_texture()) {
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return TextureType::AndroidNativeWindow;
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}
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}
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return TextureType::Unknown;
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}
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} // namespace layers
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} // namespace mozilla
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