FenceHandle
Compositor::GetReleaseFence()
{
if (!mReleaseFenceHandle.IsValid()) {
return FenceHandle();
}
RefPtr<FenceHandle::FdObj> fdObj = mReleaseFenceHandle.GetDupFdObj();
return FenceHandle(fdObj);
}
void
CompositableParentManager::ReturnTextureDataIfNecessary(CompositableHost* aCompositable,
EditReplyVector& replyv,
PCompositableParent* aParent)
{
if (!aCompositable || !aCompositable->GetCompositableBackendSpecificData()) {
return;
}
const std::vector< RefPtr<TextureHost> > textureList =
aCompositable->GetCompositableBackendSpecificData()->GetPendingReleaseFenceTextureList();
// Return pending Texture data
for (size_t i = 0; i < textureList.size(); i++) {
// File descriptor number is limited to 4 per IPC message.
// See Bug 986253
if (mPrevFenceHandles.size() >= 4) {
break;
}
TextureHostOGL* hostOGL = textureList[i]->AsHostOGL();
PTextureParent* actor = textureList[i]->GetIPDLActor();
if (!hostOGL || !actor) {
continue;
}
android::sp<android::Fence> fence = hostOGL->GetAndResetReleaseFence();
if (fence.get() && fence->isValid()) {
FenceHandle handle = FenceHandle(fence);
replyv.push_back(ReturnReleaseFence(aParent, nullptr, actor, nullptr, handle));
// Hold fence handle to prevent fence's file descriptor is closed before IPC happens.
mPrevFenceHandles.push_back(handle);
}
}
aCompositable->GetCompositableBackendSpecificData()->ClearPendingReleaseFenceTextureList();
}
FenceHandle
TextureHost::GetAndResetReleaseFenceHandle()
{
#if defined(MOZ_WIDGET_GONK) && ANDROID_VERSION >= 17
TextureHostOGL* hostOGL = this->AsHostOGL();
if (!hostOGL) {
return FenceHandle();
}
android::sp<android::Fence> fence = hostOGL->GetAndResetReleaseFence();
if (fence.get() && fence->isValid()) {
FenceHandle handle = FenceHandle(fence);
return handle;
}
#endif
return FenceHandle();
}
bool
ParamTraits<FenceHandle>::Read(const Message* aMsg,
void** aIter, paramType* aResult)
{
#if defined(MOZ_WIDGET_GONK) && ANDROID_VERSION >= 17
base::FileDescriptor fd;
if (aMsg->ReadFileDescriptor(aIter, &fd)) {
aResult->Merge(FenceHandle(new FenceHandle::FdObj(fd.fd)));
}
#endif
return true;
}
bool
HwcComposer2D::Commit(nsScreenGonk* aScreen)
{
for (uint32_t j=0; j < (mList->numHwLayers - 1); j++) {
mList->hwLayers[j].acquireFenceFd = -1;
if (mHwcLayerMap.IsEmpty() ||
(mList->hwLayers[j].compositionType == HWC_FRAMEBUFFER)) {
continue;
}
LayerRenderState state = mHwcLayerMap[j]->GetLayer()->GetRenderState();
if (!state.mTexture) {
continue;
}
FenceHandle fence = state.mTexture->GetAndResetAcquireFenceHandle();
if (fence.IsValid()) {
nsRefPtr<FenceHandle::FdObj> fdObj = fence.GetAndResetFdObj();
mList->hwLayers[j].acquireFenceFd = fdObj->GetAndResetFd();
}
}
int err = mHal->Set(mList, aScreen->GetDisplayType());
mPrevRetireFence.TransferToAnotherFenceHandle(mPrevDisplayFence);
for (uint32_t j=0; j < (mList->numHwLayers - 1); j++) {
if (mList->hwLayers[j].releaseFenceFd >= 0) {
int fd = mList->hwLayers[j].releaseFenceFd;
mList->hwLayers[j].releaseFenceFd = -1;
nsRefPtr<FenceHandle::FdObj> fdObj = new FenceHandle::FdObj(fd);
FenceHandle fence(fdObj);
LayerRenderState state = mHwcLayerMap[j]->GetLayer()->GetRenderState();
if (!state.mTexture) {
continue;
}
state.mTexture->SetReleaseFenceHandle(fence);
}
}
if (mList->retireFenceFd >= 0) {
mPrevRetireFence = FenceHandle(new FenceHandle::FdObj(mList->retireFenceFd));
}
// Set DisplaySurface layer fence
DisplaySurface* displaySurface = aScreen->GetDisplaySurface();
displaySurface->setReleaseFenceFd(mList->hwLayers[mList->numHwLayers - 1].releaseFenceFd);
mList->hwLayers[mList->numHwLayers - 1].releaseFenceFd = -1;
mPrepared = false;
return !err;
}
void
Compositor::SetDispAcquireFence(Layer* aLayer)
{
// OpenGL does not provide ReleaseFence for rendering.
// Instead use DispAcquireFence as layer buffer's ReleaseFence
// to prevent flickering and tearing.
// DispAcquireFence is DisplaySurface's AcquireFence.
// AcquireFence will be signaled when a buffer's content is available.
// See Bug 974152.
if (!aLayer || !mWidget) {
return;
}
nsWindow* window = static_cast<nsWindow*>(mWidget->RealWidget());
RefPtr<FenceHandle::FdObj> fence = new FenceHandle::FdObj(
window->GetScreen()->GetPrevDispAcquireFd());
mReleaseFenceHandle.Merge(FenceHandle(fence));
}
void
TextureParent::SendFenceHandleIfPresent()
{
#if defined(MOZ_WIDGET_GONK) && ANDROID_VERSION >= 17
if (mTextureHost) {
TextureHostOGL* hostOGL = mTextureHost->AsHostOGL();
if (!hostOGL) {
return;
}
android::sp<android::Fence> fence = hostOGL->GetAndResetReleaseFence();
if (fence.get() && fence->isValid()) {
// HWC might not provide Fence.
// In this case, HWC implicitly handles buffer's fence.
FenceHandle handle = FenceHandle(fence);
RefPtr<FenceDeliveryTracker> tracker = new FenceDeliveryTracker(handle);
mCompositableManager->SendFenceHandle(tracker, this, handle);
}
}
#endif
}
bool
LayerTransactionParent::RecvChildAsyncMessages(const InfallibleTArray<AsyncChildMessageData>& aMessages)
{
for (AsyncChildMessageArray::index_type i = 0; i < aMessages.Length(); ++i) {
const AsyncChildMessageData& message = aMessages[i];
switch (message.type()) {
case AsyncChildMessageData::TOpDeliverFenceFromChild: {
const OpDeliverFenceFromChild& op = message.get_OpDeliverFenceFromChild();
#if defined(MOZ_WIDGET_GONK) && ANDROID_VERSION >= 17
FenceHandle fence = FenceHandle(op.fence());
PTextureParent* parent = op.textureParent();
TextureHostOGL* hostOGL = nullptr;
RefPtr<TextureHost> texture = TextureHost::AsTextureHost(parent);
if (texture) {
hostOGL = texture->AsHostOGL();
}
if (hostOGL) {
hostOGL->SetAcquireFence(fence.mFence);
}
#endif
// Send back a response.
InfallibleTArray<AsyncParentMessageData> replies;
replies.AppendElement(OpReplyDeliverFence(op.transactionId()));
mozilla::unused << SendParentAsyncMessages(replies);
break;
}
case AsyncChildMessageData::TOpReplyDeliverFence: {
const OpReplyDeliverFence& op = message.get_OpReplyDeliverFence();
TransactionCompleteted(op.transactionId());
break;
}
default:
NS_ERROR("unknown AsyncChildMessageData type");
return false;
}
}
return true;
}
void
TextureParent::CompositorRecycle()
{
mTextureHost->ClearRecycleCallback();
MaybeFenceHandle handle = null_t();
#if defined(MOZ_WIDGET_GONK) && ANDROID_VERSION >= 17
if (mTextureHost) {
TextureHostOGL* hostOGL = mTextureHost->AsHostOGL();
android::sp<android::Fence> fence = hostOGL->GetAndResetReleaseFence();
if (fence.get() && fence->isValid()) {
handle = FenceHandle(fence);
// HWC might not provide Fence.
// In this case, HWC implicitly handles buffer's fence.
}
}
#endif
mozilla::unused << SendCompositorRecycle(handle);
// Don't forget to prepare for the next reycle
mWaitForClientRecycle = mTextureHost;
}
FenceHandle
Compositor::GetReleaseFence()
{
return FenceHandle();
}
FenceHandle
TextureHost::GetAndResetAcquireFenceHandle()
{
RefPtr<FenceHandle::FdObj> fdObj = mAcquireFenceHandle.GetAndResetFdObj();
return FenceHandle(fdObj);
}