bool
TextureClientD3D11::Lock(OpenMode aMode)
{
if (!IsAllocated()) {
return false;
}
MOZ_ASSERT(!mIsLocked, "The Texture is already locked!");
if (mTexture) {
MOZ_ASSERT(!mTexture10);
mIsLocked = LockD3DTexture(mTexture.get());
} else {
MOZ_ASSERT(!mTexture);
mIsLocked = LockD3DTexture(mTexture10.get());
}
if (!mIsLocked) {
return false;
}
if (NS_IsMainThread()) {
// Make sure that successful write-lock means we will have a DrawTarget to
// write into.
if (aMode & OpenMode::OPEN_WRITE) {
mDrawTarget = BorrowDrawTarget();
if (!mDrawTarget) {
Unlock();
return false;
}
}
if (mNeedsClear) {
mDrawTarget = BorrowDrawTarget();
if (!mDrawTarget) {
Unlock();
return false;
}
mDrawTarget->ClearRect(Rect(0, 0, GetSize().width, GetSize().height));
mNeedsClear = false;
}
if (mNeedsClearWhite) {
mDrawTarget = BorrowDrawTarget();
if (!mDrawTarget) {
Unlock();
return false;
}
mDrawTarget->FillRect(Rect(0, 0, GetSize().width, GetSize().height), ColorPattern(Color(1.0, 1.0, 1.0, 1.0)));
mNeedsClearWhite = false;
}
}
return true;
}
already_AddRefed<gfx::SourceSurface>
PersistentBufferProviderShared::BorrowSnapshot()
{
MOZ_ASSERT(!mDrawTarget);
auto front = GetTexture(mFront);
if (!front || front->IsLocked()) {
MOZ_ASSERT(false);
return nullptr;
}
if (!front->Lock(OpenMode::OPEN_READ)) {
return nullptr;
}
RefPtr<DrawTarget> dt = front->BorrowDrawTarget();
if (!dt) {
front->Unlock();
return nullptr;
}
mSnapshot = dt->Snapshot();
RefPtr<SourceSurface> snapshot = mSnapshot;
return snapshot.forget();
}
bool X11TextureData::UpdateFromSurface(gfx::SourceSurface* aSurface) {
RefPtr<DrawTarget> dt = BorrowDrawTarget();
if (!dt) {
return false;
}
dt->CopySurface(aSurface, IntRect(IntPoint(), aSurface->GetSize()),
IntPoint());
return true;
}
