зеркало из https://github.com/mozilla/gecko-dev.git
211 строки
6.2 KiB
C++
211 строки
6.2 KiB
C++
/* -*- Mode: C++; tab-width: 2; 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 "ClientCanvasLayer.h"
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#include "GLContext.h" // for GLContext
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#include "GLScreenBuffer.h" // for GLScreenBuffer
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#include "GeckoProfiler.h" // for PROFILER_LABEL
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#include "SharedSurfaceEGL.h" // for SurfaceFactory_EGLImage
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#include "SharedSurfaceGL.h" // for SurfaceFactory_GLTexture, etc
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#include "ClientLayerManager.h" // for ClientLayerManager, etc
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#include "mozilla/gfx/Point.h" // for IntSize
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#include "mozilla/layers/CompositorTypes.h"
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#include "mozilla/layers/LayersTypes.h"
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#include "nsCOMPtr.h" // for already_AddRefed
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#include "nsISupportsImpl.h" // for Layer::AddRef, etc
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#include "nsRect.h" // for nsIntRect
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#include "nsXULAppAPI.h" // for XRE_GetProcessType, etc
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#include "gfxPrefs.h" // for WebGLForceLayersReadback
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#ifdef XP_WIN
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#include "SharedSurfaceANGLE.h" // for SurfaceFactory_ANGLEShareHandle
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#endif
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#ifdef MOZ_WIDGET_GONK
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#include "SharedSurfaceGralloc.h"
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#endif
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#ifdef XP_MACOSX
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#include "SharedSurfaceIO.h"
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#endif
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using namespace mozilla::gfx;
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using namespace mozilla::gl;
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namespace mozilla {
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namespace layers {
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ClientCanvasLayer::~ClientCanvasLayer()
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{
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MOZ_COUNT_DTOR(ClientCanvasLayer);
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if (mCanvasClient) {
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mCanvasClient->OnDetach();
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mCanvasClient = nullptr;
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}
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}
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void
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ClientCanvasLayer::Initialize(const Data& aData)
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{
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CopyableCanvasLayer::Initialize(aData);
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mCanvasClient = nullptr;
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if (!mGLContext)
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return;
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GLScreenBuffer* screen = mGLContext->Screen();
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SurfaceCaps caps;
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if (mGLFrontbuffer) {
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// The screen caps are irrelevant if we're using a separate frontbuffer.
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caps = mGLFrontbuffer->mHasAlpha ? SurfaceCaps::ForRGBA()
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: SurfaceCaps::ForRGB();
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} else {
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MOZ_ASSERT(screen);
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caps = screen->mCaps;
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}
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MOZ_ASSERT(caps.alpha == aData.mHasAlpha);
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UniquePtr<SurfaceFactory> factory;
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if (!gfxPrefs::WebGLForceLayersReadback()) {
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switch (ClientManager()->AsShadowForwarder()->GetCompositorBackendType()) {
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case mozilla::layers::LayersBackend::LAYERS_OPENGL: {
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if (mGLContext->GetContextType() == GLContextType::EGL) {
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#ifdef MOZ_WIDGET_GONK
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TextureFlags flags = TextureFlags::DEALLOCATE_CLIENT |
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TextureFlags::NEEDS_Y_FLIP;
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if (!aData.mIsGLAlphaPremult) {
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flags |= TextureFlags::NON_PREMULTIPLIED;
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}
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factory = MakeUnique<SurfaceFactory_Gralloc>(mGLContext,
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caps,
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flags,
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ClientManager()->AsShadowForwarder());
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#else
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bool isCrossProcess = !(XRE_GetProcessType() == GeckoProcessType_Default);
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if (!isCrossProcess) {
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// [Basic/OGL Layers, OMTC] WebGL layer init.
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factory = SurfaceFactory_EGLImage::Create(mGLContext, caps);
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} else {
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// we could do readback here maybe
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NS_NOTREACHED("isCrossProcess but not on native B2G!");
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}
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#endif
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} else {
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// [Basic Layers, OMTC] WebGL layer init.
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// Well, this *should* work...
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#ifdef XP_MACOSX
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factory = SurfaceFactory_IOSurface::Create(mGLContext, caps);
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#else
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GLContext* nullConsGL = nullptr; // Bug 1050044.
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factory = MakeUnique<SurfaceFactory_GLTexture>(mGLContext, nullConsGL, caps);
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#endif
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}
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break;
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}
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case mozilla::layers::LayersBackend::LAYERS_D3D10:
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case mozilla::layers::LayersBackend::LAYERS_D3D11: {
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#ifdef XP_WIN
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if (mGLContext->IsANGLE()) {
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factory = SurfaceFactory_ANGLEShareHandle::Create(mGLContext, caps);
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}
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#endif
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break;
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}
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default:
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break;
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}
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}
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if (mGLFrontbuffer) {
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// We're using a source other than the one in the default screen.
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// (SkiaGL)
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mFactory = Move(factory);
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if (!mFactory) {
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// Absolutely must have a factory here, so create a basic one
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mFactory = MakeUnique<SurfaceFactory_Basic>(mGLContext, caps);
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}
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} else {
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if (factory)
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screen->Morph(Move(factory));
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}
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}
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void
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ClientCanvasLayer::RenderLayer()
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{
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PROFILER_LABEL("ClientCanvasLayer", "RenderLayer",
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js::ProfileEntry::Category::GRAPHICS);
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if (GetMaskLayer()) {
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ToClientLayer(GetMaskLayer())->RenderLayer();
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}
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if (!IsDirty()) {
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return;
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}
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Painted();
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if (!mCanvasClient) {
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TextureFlags flags = TextureFlags::IMMEDIATE_UPLOAD;
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if (mNeedsYFlip) {
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flags |= TextureFlags::NEEDS_Y_FLIP;
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}
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if (!mGLContext) {
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// We don't support locking for buffer surfaces currently
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flags |= TextureFlags::IMMEDIATE_UPLOAD;
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}
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if (!mIsAlphaPremultiplied) {
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flags |= TextureFlags::NON_PREMULTIPLIED;
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}
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mCanvasClient = CanvasClient::CreateCanvasClient(GetCanvasClientType(),
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ClientManager()->AsShadowForwarder(),
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flags);
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if (!mCanvasClient) {
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return;
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}
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if (HasShadow()) {
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mCanvasClient->Connect();
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ClientManager()->AsShadowForwarder()->Attach(mCanvasClient, this);
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}
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}
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FirePreTransactionCallback();
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mCanvasClient->Update(gfx::IntSize(mBounds.width, mBounds.height), this);
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FireDidTransactionCallback();
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ClientManager()->Hold(this);
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mCanvasClient->Updated();
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mCanvasClient->OnTransaction();
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}
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CanvasClient::CanvasClientType
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ClientCanvasLayer::GetCanvasClientType()
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{
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if (mGLContext) {
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return CanvasClient::CanvasClientTypeShSurf;
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}
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return CanvasClient::CanvasClientSurface;
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}
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already_AddRefed<CanvasLayer>
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ClientLayerManager::CreateCanvasLayer()
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{
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NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
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nsRefPtr<ClientCanvasLayer> layer =
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new ClientCanvasLayer(this);
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CREATE_SHADOW(Canvas);
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return layer.forget();
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}
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}
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}
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