already_AddRefed<ThebesLayer>
ClientLayerManager::CreateThebesLayerWithHint(ThebesLayerCreationHint aHint)
{
NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
if (
#ifdef MOZ_B2G
aHint == SCROLLABLE &&
#endif
gfxPrefs::LayersTilesEnabled() &&
(AsShadowForwarder()->GetCompositorBackendType() == LayersBackend::LAYERS_OPENGL ||
AsShadowForwarder()->GetCompositorBackendType() == LayersBackend::LAYERS_D3D9 ||
AsShadowForwarder()->GetCompositorBackendType() == LayersBackend::LAYERS_D3D11)) {
if (gfxPrefs::LayersUseSimpleTiles()) {
nsRefPtr<SimpleClientTiledThebesLayer> layer =
new SimpleClientTiledThebesLayer(this);
CREATE_SHADOW(Thebes);
return layer.forget();
} else {
nsRefPtr<ClientTiledThebesLayer> layer =
new ClientTiledThebesLayer(this);
CREATE_SHADOW(Thebes);
return layer.forget();
}
} else
{
nsRefPtr<ClientThebesLayer> layer =
new ClientThebesLayer(this);
CREATE_SHADOW(Thebes);
return layer.forget();
}
}
bool
ClientLayerManager::AreComponentAlphaLayersEnabled()
{
return GetCompositorBackendType() != LayersBackend::LAYERS_BASIC &&
AsShadowForwarder()->SupportsComponentAlpha() &&
LayerManager::AreComponentAlphaLayersEnabled();
}
void
CanvasClientSharedSurface::Update(gfx::IntSize aSize, ClientCanvasLayer* aLayer)
{
if (mFront) {
mPrevFront = mFront;
mFront = nullptr;
}
auto gl = aLayer->mGLContext;
gl->MakeCurrent();
if (aLayer->mGLFrontbuffer) {
mFront = CloneSurface(aLayer->mGLFrontbuffer.get(), aLayer->mFactory.get());
if (mFront)
mFront->Surf()->Fence();
} else {
mFront = gl->Screen()->Front();
if (!mFront)
return;
}
MOZ_ASSERT(mFront);
// Alright, now sort out the IPC goop.
SharedSurface* surf = mFront->Surf();
auto forwarder = GetForwarder();
auto flags = GetTextureFlags() | TextureFlags::IMMUTABLE;
// Get a TexClient from our surf.
RefPtr<TextureClient> newTex = TexClientFromShSurf(surf, flags);
if (!newTex) {
auto manager = aLayer->ClientManager();
auto shadowForwarder = manager->AsShadowForwarder();
auto layersBackend = shadowForwarder->GetCompositorBackendType();
newTex = TexClientFromReadback(surf, forwarder, flags, layersBackend);
}
MOZ_ASSERT(newTex);
// Add the new TexClient.
MOZ_ALWAYS_TRUE( AddTextureClient(newTex) );
// Remove the old TexClient.
if (mFrontTex) {
// remove old buffer from CompositableHost
RefPtr<AsyncTransactionTracker> tracker = new RemoveTextureFromCompositableTracker();
// Hold TextureClient until transaction complete.
tracker->SetTextureClient(mFrontTex);
mFrontTex->SetRemoveFromCompositableTracker(tracker);
// RemoveTextureFromCompositableAsync() expects CompositorChild's presence.
GetForwarder()->RemoveTextureFromCompositableAsync(tracker, this, mFrontTex);
mFrontTex = nullptr;
}
// Use the new TexClient.
mFrontTex = newTex;
forwarder->UpdatedTexture(this, mFrontTex, nullptr);
forwarder->UseTexture(this, mFrontTex);
}
already_AddRefed<ThebesLayer>
ClientLayerManager::CreateThebesLayer()
{
NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
if (Preferences::GetBool("layers.force-tiles") && AsShadowForwarder()->GetCompositorBackendType() == LAYERS_OPENGL) {
nsRefPtr<ClientTiledThebesLayer> layer =
new ClientTiledThebesLayer(this);
CREATE_SHADOW(Thebes);
return layer.forget();
} else
{
nsRefPtr<ClientThebesLayer> layer =
new ClientThebesLayer(this);
CREATE_SHADOW(Thebes);
return layer.forget();
}
}
already_AddRefed<PersistentBufferProvider>
ClientLayerManager::CreatePersistentBufferProvider(const gfx::IntSize& aSize,
gfx::SurfaceFormat aFormat)
{
// Don't use a shared buffer provider if compositing is considered "not cheap"
// because the canvas will most likely be flattened into a thebes layer instead
// of being sent to the compositor, in which case rendering into shared memory
// is wasteful.
if (IsCompositingCheap() &&
gfxPrefs::PersistentBufferProviderSharedEnabled()) {
RefPtr<PersistentBufferProvider> provider
= PersistentBufferProviderShared::Create(aSize, aFormat, AsShadowForwarder());
if (provider) {
return provider.forget();
}
}
return LayerManager::CreatePersistentBufferProvider(aSize, aFormat);
}
bool
ClientLayerManager::SupportsBackdropCopyForComponentAlpha()
{
const TextureFactoryIdentifier& ident = AsShadowForwarder()->GetTextureFactoryIdentifier();
return ident.mSupportsBackdropCopyForComponentAlpha;
}
already_AddRefed<PersistentBufferProvider>
ClientLayerManager::CreatePersistentBufferProvider(const gfx::IntSize& aSize,
gfx::SurfaceFormat aFormat)
{
return PersistentBufferProviderShared::Create(aSize, aFormat, AsShadowForwarder());
}
void
CanvasClientSharedSurface::Update(gfx::IntSize aSize, ClientCanvasLayer* aLayer)
{
auto gl = aLayer->mGLContext;
gl->MakeCurrent();
RefPtr<TextureClient> newFront;
if (aLayer->mGLFrontbuffer) {
mShSurfClient = CloneSurface(aLayer->mGLFrontbuffer.get(), aLayer->mFactory.get());
if (!mShSurfClient) {
gfxCriticalError() << "Invalid canvas front buffer";
return;
}
} else {
mShSurfClient = gl->Screen()->Front();
if (!mShSurfClient) {
return;
}
}
MOZ_ASSERT(mShSurfClient);
newFront = mShSurfClient;
SharedSurface* surf = mShSurfClient->Surf();
// Readback if needed.
mReadbackClient = nullptr;
auto forwarder = GetForwarder();
bool needsReadback = (surf->mType == SharedSurfaceType::Basic);
if (needsReadback) {
TextureFlags flags = aLayer->Flags() |
TextureFlags::IMMUTABLE;
auto manager = aLayer->ClientManager();
auto shadowForwarder = manager->AsShadowForwarder();
auto layersBackend = shadowForwarder->GetCompositorBackendType();
mReadbackClient = TexClientFromReadback(surf, forwarder, flags, layersBackend);
newFront = mReadbackClient;
} else {
mReadbackClient = nullptr;
}
MOZ_ASSERT(newFront);
if (!newFront) {
// May happen in a release build in case of memory pressure.
gfxCriticalError() << "Failed to allocate a TextureClient for SharedSurface Canvas. Size: " << aSize;
return;
}
if (mFront) {
if (mFront->GetFlags() & TextureFlags::RECYCLE) {
mFront->WaitForCompositorRecycle();
}
}
mFront = newFront;
// Add the new TexClient.
MOZ_ALWAYS_TRUE( AddTextureClient(mFront) );
forwarder->UseTexture(this, mFront);
}