1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/layers/client/ClientCanvasLayer.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,181 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
1.5 + * This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#include "ClientCanvasLayer.h"
1.10 +#include "GLContext.h" // for GLContext
1.11 +#include "GLScreenBuffer.h" // for GLScreenBuffer
1.12 +#include "GeckoProfiler.h" // for PROFILER_LABEL
1.13 +#include "SharedSurfaceEGL.h" // for SurfaceFactory_EGLImage
1.14 +#include "SharedSurfaceGL.h" // for SurfaceFactory_GLTexture, etc
1.15 +#include "SurfaceStream.h" // for SurfaceStream, etc
1.16 +#include "SurfaceTypes.h" // for SurfaceStreamType
1.17 +#include "ClientLayerManager.h" // for ClientLayerManager, etc
1.18 +#include "mozilla/gfx/Point.h" // for IntSize
1.19 +#include "mozilla/layers/CompositorTypes.h"
1.20 +#include "mozilla/layers/LayersTypes.h"
1.21 +#include "nsCOMPtr.h" // for already_AddRefed
1.22 +#include "nsISupportsImpl.h" // for Layer::AddRef, etc
1.23 +#include "nsRect.h" // for nsIntRect
1.24 +#include "nsXULAppAPI.h" // for XRE_GetProcessType, etc
1.25 +#ifdef MOZ_WIDGET_GONK
1.26 +#include "SharedSurfaceGralloc.h"
1.27 +#endif
1.28 +#ifdef XP_MACOSX
1.29 +#include "SharedSurfaceIO.h"
1.30 +#endif
1.31 +#include "gfxPrefs.h" // for WebGLForceLayersReadback
1.32 +
1.33 +using namespace mozilla::gfx;
1.34 +using namespace mozilla::gl;
1.35 +
1.36 +namespace mozilla {
1.37 +namespace layers {
1.38 +
1.39 +ClientCanvasLayer::~ClientCanvasLayer()
1.40 +{
1.41 + MOZ_COUNT_DTOR(ClientCanvasLayer);
1.42 + if (mCanvasClient) {
1.43 + mCanvasClient->OnDetach();
1.44 + mCanvasClient = nullptr;
1.45 + }
1.46 + if (mTextureSurface) {
1.47 + delete mTextureSurface;
1.48 + }
1.49 +}
1.50 +
1.51 +void
1.52 +ClientCanvasLayer::Initialize(const Data& aData)
1.53 +{
1.54 + CopyableCanvasLayer::Initialize(aData);
1.55 +
1.56 + mCanvasClient = nullptr;
1.57 +
1.58 + if (mGLContext) {
1.59 + GLScreenBuffer* screen = mGLContext->Screen();
1.60 +
1.61 + SurfaceCaps caps = screen->Caps();
1.62 + if (mStream) {
1.63 + // The screen caps are irrelevant if we're using a separate stream
1.64 + caps = GetContentFlags() & CONTENT_OPAQUE ? SurfaceCaps::ForRGB() : SurfaceCaps::ForRGBA();
1.65 + }
1.66 +
1.67 + SurfaceStreamType streamType =
1.68 + SurfaceStream::ChooseGLStreamType(SurfaceStream::OffMainThread,
1.69 + screen->PreserveBuffer());
1.70 + SurfaceFactory_GL* factory = nullptr;
1.71 + if (!gfxPrefs::WebGLForceLayersReadback()) {
1.72 + if (ClientManager()->AsShadowForwarder()->GetCompositorBackendType() == mozilla::layers::LayersBackend::LAYERS_OPENGL) {
1.73 + if (mGLContext->GetContextType() == GLContextType::EGL) {
1.74 + bool isCrossProcess = !(XRE_GetProcessType() == GeckoProcessType_Default);
1.75 +
1.76 + if (!isCrossProcess) {
1.77 + // [Basic/OGL Layers, OMTC] WebGL layer init.
1.78 + factory = SurfaceFactory_EGLImage::Create(mGLContext, caps);
1.79 + } else {
1.80 + // [Basic/OGL Layers, OOPC] WebGL layer init. (Out Of Process Compositing)
1.81 +#ifdef MOZ_WIDGET_GONK
1.82 + factory = new SurfaceFactory_Gralloc(mGLContext, caps, ClientManager()->AsShadowForwarder());
1.83 +#else
1.84 + // we could do readback here maybe
1.85 + NS_NOTREACHED("isCrossProcess but not on native B2G!");
1.86 +#endif
1.87 + }
1.88 + } else {
1.89 + // [Basic Layers, OMTC] WebGL layer init.
1.90 + // Well, this *should* work...
1.91 +#ifdef XP_MACOSX
1.92 + factory = new SurfaceFactory_IOSurface(mGLContext, caps);
1.93 +#else
1.94 + factory = new SurfaceFactory_GLTexture(mGLContext, nullptr, caps);
1.95 +#endif
1.96 + }
1.97 + }
1.98 + }
1.99 +
1.100 + if (mStream) {
1.101 + // We're using a stream other than the one in the default screen
1.102 + mFactory = factory;
1.103 + if (!mFactory) {
1.104 + // Absolutely must have a factory here, so create a basic one
1.105 + mFactory = new SurfaceFactory_Basic(mGLContext, caps);
1.106 + }
1.107 +
1.108 + gfx::IntSize size = gfx::IntSize(aData.mSize.width, aData.mSize.height);
1.109 + mTextureSurface = SharedSurface_GLTexture::Create(mGLContext, mGLContext,
1.110 + mGLContext->GetGLFormats(),
1.111 + size, caps.alpha, aData.mTexID);
1.112 + SharedSurface* producer = mStream->SwapProducer(mFactory, size);
1.113 + if (!producer) {
1.114 + // Fallback to basic factory
1.115 + delete mFactory;
1.116 + mFactory = new SurfaceFactory_Basic(mGLContext, caps);
1.117 + producer = mStream->SwapProducer(mFactory, size);
1.118 + MOZ_ASSERT(producer, "Failed to create initial canvas surface with basic factory");
1.119 + }
1.120 + } else if (factory) {
1.121 + screen->Morph(factory, streamType);
1.122 + }
1.123 + }
1.124 +}
1.125 +
1.126 +void
1.127 +ClientCanvasLayer::RenderLayer()
1.128 +{
1.129 + PROFILER_LABEL("ClientCanvasLayer", "Paint");
1.130 + if (!IsDirty()) {
1.131 + return;
1.132 + }
1.133 +
1.134 + if (GetMaskLayer()) {
1.135 + ToClientLayer(GetMaskLayer())->RenderLayer();
1.136 + }
1.137 +
1.138 + if (!mCanvasClient) {
1.139 + TextureFlags flags = TEXTURE_IMMEDIATE_UPLOAD;
1.140 + if (mNeedsYFlip) {
1.141 + flags |= TEXTURE_NEEDS_Y_FLIP;
1.142 + }
1.143 +
1.144 + if (!mGLContext) {
1.145 + // We don't support locking for buffer surfaces currently
1.146 + flags |= TEXTURE_IMMEDIATE_UPLOAD;
1.147 + } else {
1.148 + // GLContext's SurfaceStream handles ownership itself,
1.149 + // and doesn't require layers to do any deallocation.
1.150 + flags |= TEXTURE_DEALLOCATE_CLIENT;
1.151 + }
1.152 + mCanvasClient = CanvasClient::CreateCanvasClient(GetCanvasClientType(),
1.153 + ClientManager()->AsShadowForwarder(), flags);
1.154 + if (!mCanvasClient) {
1.155 + return;
1.156 + }
1.157 + if (HasShadow()) {
1.158 + mCanvasClient->Connect();
1.159 + ClientManager()->AsShadowForwarder()->Attach(mCanvasClient, this);
1.160 + }
1.161 + }
1.162 +
1.163 + FirePreTransactionCallback();
1.164 + mCanvasClient->Update(gfx::IntSize(mBounds.width, mBounds.height), this);
1.165 +
1.166 + FireDidTransactionCallback();
1.167 +
1.168 + ClientManager()->Hold(this);
1.169 + mCanvasClient->Updated();
1.170 + mCanvasClient->OnTransaction();
1.171 +}
1.172 +
1.173 +already_AddRefed<CanvasLayer>
1.174 +ClientLayerManager::CreateCanvasLayer()
1.175 +{
1.176 + NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
1.177 + nsRefPtr<ClientCanvasLayer> layer =
1.178 + new ClientCanvasLayer(this);
1.179 + CREATE_SHADOW(Canvas);
1.180 + return layer.forget();
1.181 +}
1.182 +
1.183 +}
1.184 +}
