gecko-dev/gfx/layers/client/ClientCanvasLayer.cpp

211 строки
6.2 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "ClientCanvasLayer.h"
#include "GLContext.h" // for GLContext
#include "GLScreenBuffer.h" // for GLScreenBuffer
#include "GeckoProfiler.h" // for PROFILER_LABEL
#include "SharedSurfaceEGL.h" // for SurfaceFactory_EGLImage
#include "SharedSurfaceGL.h" // for SurfaceFactory_GLTexture, etc
#include "ClientLayerManager.h" // for ClientLayerManager, etc
#include "mozilla/gfx/Point.h" // for IntSize
#include "mozilla/layers/CompositorTypes.h"
#include "mozilla/layers/LayersTypes.h"
#include "nsCOMPtr.h" // for already_AddRefed
#include "nsISupportsImpl.h" // for Layer::AddRef, etc
#include "nsRect.h" // for nsIntRect
#include "nsXULAppAPI.h" // for XRE_GetProcessType, etc
#include "gfxPrefs.h" // for WebGLForceLayersReadback
#ifdef XP_WIN
#include "SharedSurfaceANGLE.h" // for SurfaceFactory_ANGLEShareHandle
#endif
#ifdef MOZ_WIDGET_GONK
#include "SharedSurfaceGralloc.h"
#endif
#ifdef XP_MACOSX
#include "SharedSurfaceIO.h"
#endif
using namespace mozilla::gfx;
using namespace mozilla::gl;
namespace mozilla {
namespace layers {
ClientCanvasLayer::~ClientCanvasLayer()
{
MOZ_COUNT_DTOR(ClientCanvasLayer);
if (mCanvasClient) {
mCanvasClient->OnDetach();
mCanvasClient = nullptr;
}
}
void
ClientCanvasLayer::Initialize(const Data& aData)
{
CopyableCanvasLayer::Initialize(aData);
mCanvasClient = nullptr;
if (!mGLContext)
return;
GLScreenBuffer* screen = mGLContext->Screen();
SurfaceCaps caps;
if (mGLFrontbuffer) {
// The screen caps are irrelevant if we're using a separate frontbuffer.
caps = mGLFrontbuffer->mHasAlpha ? SurfaceCaps::ForRGBA()
: SurfaceCaps::ForRGB();
} else {
MOZ_ASSERT(screen);
caps = screen->mCaps;
}
MOZ_ASSERT(caps.alpha == aData.mHasAlpha);
UniquePtr<SurfaceFactory> factory;
if (!gfxPrefs::WebGLForceLayersReadback()) {
switch (ClientManager()->AsShadowForwarder()->GetCompositorBackendType()) {
case mozilla::layers::LayersBackend::LAYERS_OPENGL: {
if (mGLContext->GetContextType() == GLContextType::EGL) {
#ifdef MOZ_WIDGET_GONK
TextureFlags flags = TextureFlags::DEALLOCATE_CLIENT |
TextureFlags::NEEDS_Y_FLIP;
if (!aData.mIsGLAlphaPremult) {
flags |= TextureFlags::NON_PREMULTIPLIED;
}
factory = MakeUnique<SurfaceFactory_Gralloc>(mGLContext,
caps,
flags,
ClientManager()->AsShadowForwarder());
#else
bool isCrossProcess = !(XRE_GetProcessType() == GeckoProcessType_Default);
if (!isCrossProcess) {
// [Basic/OGL Layers, OMTC] WebGL layer init.
factory = SurfaceFactory_EGLImage::Create(mGLContext, caps);
} else {
// we could do readback here maybe
NS_NOTREACHED("isCrossProcess but not on native B2G!");
}
#endif
} else {
// [Basic Layers, OMTC] WebGL layer init.
// Well, this *should* work...
#ifdef XP_MACOSX
factory = SurfaceFactory_IOSurface::Create(mGLContext, caps);
#else
GLContext* nullConsGL = nullptr; // Bug 1050044.
factory = MakeUnique<SurfaceFactory_GLTexture>(mGLContext, nullConsGL, caps);
#endif
}
break;
}
case mozilla::layers::LayersBackend::LAYERS_D3D10:
case mozilla::layers::LayersBackend::LAYERS_D3D11: {
#ifdef XP_WIN
if (mGLContext->IsANGLE()) {
factory = SurfaceFactory_ANGLEShareHandle::Create(mGLContext, caps);
}
#endif
break;
}
default:
break;
}
}
if (mGLFrontbuffer) {
// We're using a source other than the one in the default screen.
// (SkiaGL)
mFactory = Move(factory);
if (!mFactory) {
// Absolutely must have a factory here, so create a basic one
mFactory = MakeUnique<SurfaceFactory_Basic>(mGLContext, caps);
}
} else {
if (factory)
screen->Morph(Move(factory));
}
}
void
ClientCanvasLayer::RenderLayer()
{
PROFILER_LABEL("ClientCanvasLayer", "RenderLayer",
js::ProfileEntry::Category::GRAPHICS);
if (GetMaskLayer()) {
ToClientLayer(GetMaskLayer())->RenderLayer();
}
if (!IsDirty()) {
return;
}
Painted();
if (!mCanvasClient) {
TextureFlags flags = TextureFlags::IMMEDIATE_UPLOAD;
if (mNeedsYFlip) {
flags |= TextureFlags::NEEDS_Y_FLIP;
}
if (!mGLContext) {
// We don't support locking for buffer surfaces currently
flags |= TextureFlags::IMMEDIATE_UPLOAD;
}
if (!mIsAlphaPremultiplied) {
flags |= TextureFlags::NON_PREMULTIPLIED;
}
mCanvasClient = CanvasClient::CreateCanvasClient(GetCanvasClientType(),
ClientManager()->AsShadowForwarder(),
flags);
if (!mCanvasClient) {
return;
}
if (HasShadow()) {
mCanvasClient->Connect();
ClientManager()->AsShadowForwarder()->Attach(mCanvasClient, this);
}
}
FirePreTransactionCallback();
mCanvasClient->Update(gfx::IntSize(mBounds.width, mBounds.height), this);
FireDidTransactionCallback();
ClientManager()->Hold(this);
mCanvasClient->Updated();
mCanvasClient->OnTransaction();
}
CanvasClient::CanvasClientType
ClientCanvasLayer::GetCanvasClientType()
{
if (mGLContext) {
return CanvasClient::CanvasClientTypeShSurf;
}
return CanvasClient::CanvasClientSurface;
}
already_AddRefed<CanvasLayer>
ClientLayerManager::CreateCanvasLayer()
{
NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
nsRefPtr<ClientCanvasLayer> layer =
new ClientCanvasLayer(this);
CREATE_SHADOW(Canvas);
return layer.forget();
}
}
}