void
ContentClientDoubleBuffered::UpdateDestinationFrom(const RotatedBuffer& aSource,
const nsIntRegion& aUpdateRegion)
{
nsRefPtr<gfxContext> destCtx =
GetContextForQuadrantUpdate(aUpdateRegion.GetBounds(), BUFFER_BLACK);
destCtx->SetOperator(gfxContext::OPERATOR_SOURCE);
bool isClippingCheap = IsClippingCheap(destCtx, aUpdateRegion);
if (isClippingCheap) {
gfxUtils::ClipToRegion(destCtx, aUpdateRegion);
}
if (SupportsAzureContent()) {
MOZ_ASSERT(!destCtx->IsCairo());
if (destCtx->GetDrawTarget()->GetFormat() == FORMAT_B8G8R8A8) {
destCtx->GetDrawTarget()->ClearRect(Rect(0, 0, mFrontBufferRect.width, mFrontBufferRect.height));
}
aSource.DrawBufferWithRotation(destCtx->GetDrawTarget(), BUFFER_BLACK);
} else {
aSource.DrawBufferWithRotation(destCtx, BUFFER_BLACK);
}
if (aSource.HaveBufferOnWhite()) {
MOZ_ASSERT(HaveBufferOnWhite());
nsRefPtr<gfxContext> destCtx =
GetContextForQuadrantUpdate(aUpdateRegion.GetBounds(), BUFFER_WHITE);
destCtx->SetOperator(gfxContext::OPERATOR_SOURCE);
bool isClippingCheap = IsClippingCheap(destCtx, aUpdateRegion);
if (isClippingCheap) {
gfxUtils::ClipToRegion(destCtx, aUpdateRegion);
}
if (SupportsAzureContent()) {
MOZ_ASSERT(!destCtx->IsCairo());
if (destCtx->GetDrawTarget()->GetFormat() == FORMAT_B8G8R8A8) {
destCtx->GetDrawTarget()->ClearRect(Rect(0, 0, mFrontBufferRect.width, mFrontBufferRect.height));
}
aSource.DrawBufferWithRotation(destCtx->GetDrawTarget(), BUFFER_WHITE);
} else {
aSource.DrawBufferWithRotation(destCtx, BUFFER_WHITE);
}
}
}
void
ContentClientDoubleBuffered::UpdateDestinationFrom(const RotatedBuffer& aSource,
const nsIntRegion& aUpdateRegion)
{
nsRefPtr<gfxContext> destCtx =
GetContextForQuadrantUpdate(aUpdateRegion.GetBounds(), BUFFER_BLACK);
if (!destCtx) {
return;
}
destCtx->SetOperator(gfxContext::OPERATOR_SOURCE);
bool isClippingCheap = IsClippingCheap(destCtx, aUpdateRegion);
if (isClippingCheap) {
gfxUtils::ClipToRegion(destCtx, aUpdateRegion);
}
if (SupportsAzureContent()) {
MOZ_ASSERT(!destCtx->IsCairo());
aSource.DrawBufferWithRotation(destCtx->GetDrawTarget(), BUFFER_BLACK, 1.0, OP_SOURCE);
} else {
aSource.DrawBufferWithRotation(destCtx, BUFFER_BLACK);
}
if (aSource.HaveBufferOnWhite()) {
MOZ_ASSERT(HaveBufferOnWhite());
nsRefPtr<gfxContext> destCtx =
GetContextForQuadrantUpdate(aUpdateRegion.GetBounds(), BUFFER_WHITE);
destCtx->SetOperator(gfxContext::OPERATOR_SOURCE);
bool isClippingCheap = IsClippingCheap(destCtx, aUpdateRegion);
if (isClippingCheap) {
gfxUtils::ClipToRegion(destCtx, aUpdateRegion);
}
if (SupportsAzureContent()) {
MOZ_ASSERT(!destCtx->IsCairo());
aSource.DrawBufferWithRotation(destCtx->GetDrawTarget(), BUFFER_WHITE, 1.0, OP_SOURCE);
} else {
aSource.DrawBufferWithRotation(destCtx, BUFFER_WHITE);
}
}
}
void
ContentClientSingleBuffered::SyncFrontBufferToBackBuffer()
{
if (!mFrontAndBackBufferDiffer) {
return;
}
if (SupportsAzureContent()) {
DrawTarget* backBuffer = GetDTBuffer();
if (!backBuffer && mDeprecatedTextureClient) {
backBuffer = mDeprecatedTextureClient->LockDrawTarget();
}
RefPtr<DrawTarget> oldBuffer;
oldBuffer = SetDTBuffer(backBuffer,
mBufferRect,
mBufferRotation);
backBuffer = GetDTBufferOnWhite();
if (!backBuffer && mDeprecatedTextureClientOnWhite) {
backBuffer = mDeprecatedTextureClientOnWhite->LockDrawTarget();
}
oldBuffer = SetDTBufferOnWhite(backBuffer);
} else {
gfxASurface* backBuffer = GetBuffer();
if (!backBuffer && mDeprecatedTextureClient) {
backBuffer = mDeprecatedTextureClient->LockSurface();
}
nsRefPtr<gfxASurface> oldBuffer;
oldBuffer = SetBuffer(backBuffer,
mBufferRect,
mBufferRotation);
backBuffer = GetBufferOnWhite();
if (!backBuffer && mDeprecatedTextureClientOnWhite) {
backBuffer = mDeprecatedTextureClientOnWhite->LockSurface();
}
oldBuffer = SetBufferOnWhite(backBuffer);
}
mIsNewBuffer = false;
mFrontAndBackBufferDiffer = false;
}
void
ContentClientDoubleBuffered::SyncFrontBufferToBackBuffer()
{
if (!mFrontAndBackBufferDiffer) {
return;
}
MOZ_ASSERT(mFrontClient);
MOZ_ASSERT(mFrontClient->GetAccessMode() == DeprecatedTextureClient::ACCESS_READ_ONLY);
MOZ_ASSERT(!mFrontClientOnWhite ||
mFrontClientOnWhite->GetAccessMode() == DeprecatedTextureClient::ACCESS_READ_ONLY);
MOZ_LAYERS_LOG(("BasicShadowableThebes(%p): reading back <x=%d,y=%d,w=%d,h=%d>",
this,
mFrontUpdatedRegion.GetBounds().x,
mFrontUpdatedRegion.GetBounds().y,
mFrontUpdatedRegion.GetBounds().width,
mFrontUpdatedRegion.GetBounds().height));
nsIntRegion updateRegion = mFrontUpdatedRegion;
int32_t xBoundary = mBufferRect.XMost() - mBufferRotation.x;
int32_t yBoundary = mBufferRect.YMost() - mBufferRotation.y;
// Figure out whether the area we want to copy wraps the edges of our buffer.
bool needFullCopy = (xBoundary < updateRegion.GetBounds().XMost() &&
xBoundary > updateRegion.GetBounds().x) ||
(yBoundary < updateRegion.GetBounds().YMost() &&
yBoundary > updateRegion.GetBounds().y);
// This is a tricky trade off, we're going to get stuff out of our
// frontbuffer now, but the next PaintThebes might throw it all (or mostly)
// away if the visible region has changed. This is why in reality we want
// this code integrated with PaintThebes to always do the optimal thing.
if (needFullCopy) {
// We can't easily draw our front buffer into us, since we're going to be
// copying stuff around anyway it's easiest if we just move our situation
// to non-rotated while we're at it. If this situation occurs we'll have
// hit a self-copy path in PaintThebes before as well anyway.
mBufferRect.MoveTo(mFrontBufferRect.TopLeft());
mBufferRotation = nsIntPoint();
updateRegion = mBufferRect;
} else {
mBufferRect = mFrontBufferRect;
mBufferRotation = mFrontBufferRotation;
}
AutoDeprecatedTextureClient autoTextureFront;
AutoDeprecatedTextureClient autoTextureFrontOnWhite;
if (SupportsAzureContent()) {
RotatedBuffer frontBuffer(autoTextureFront.GetDrawTarget(mFrontClient),
autoTextureFrontOnWhite.GetDrawTarget(mFrontClientOnWhite),
mFrontBufferRect,
mFrontBufferRotation);
UpdateDestinationFrom(frontBuffer, updateRegion);
} else {
RotatedBuffer frontBuffer(autoTextureFront.GetSurface(mFrontClient),
autoTextureFrontOnWhite.GetSurface(mFrontClientOnWhite),
mFrontBufferRect,
mFrontBufferRotation);
UpdateDestinationFrom(frontBuffer, updateRegion);
}
mIsNewBuffer = false;
mFrontAndBackBufferDiffer = false;
}
void
ContentClientDoubleBuffered::SyncFrontBufferToBackBuffer()
{
mIsNewBuffer = false;
if (!mFrontAndBackBufferDiffer) {
return;
}
MOZ_ASSERT(mFrontClient);
MOZ_ASSERT(mFrontClient->GetAccessMode() == DeprecatedTextureClient::ACCESS_READ_ONLY);
MOZ_ASSERT(!mFrontClientOnWhite ||
mFrontClientOnWhite->GetAccessMode() == DeprecatedTextureClient::ACCESS_READ_ONLY);
MOZ_LAYERS_LOG(("BasicShadowableThebes(%p): reading back <x=%d,y=%d,w=%d,h=%d>",
this,
mFrontUpdatedRegion.GetBounds().x,
mFrontUpdatedRegion.GetBounds().y,
mFrontUpdatedRegion.GetBounds().width,
mFrontUpdatedRegion.GetBounds().height));
nsIntRegion updateRegion = mFrontUpdatedRegion;
// This is a tricky trade off, we're going to get stuff out of our
// frontbuffer now, but the next PaintThebes might throw it all (or mostly)
// away if the visible region has changed. This is why in reality we want
// this code integrated with PaintThebes to always do the optimal thing.
if (mDidSelfCopy) {
mDidSelfCopy = false;
// We can't easily draw our front buffer into us, since we're going to be
// copying stuff around anyway it's easiest if we just move our situation
// to non-rotated while we're at it. If this situation occurs we'll have
// hit a self-copy path in PaintThebes before as well anyway.
mBufferRect.MoveTo(mFrontBufferRect.TopLeft());
mBufferRotation = nsIntPoint();
updateRegion = mBufferRect;
} else {
mBufferRect = mFrontBufferRect;
mBufferRotation = mFrontBufferRotation;
}
AutoDeprecatedTextureClient autoTextureFront;
AutoDeprecatedTextureClient autoTextureFrontOnWhite;
if (SupportsAzureContent()) {
// We need to ensure that we lock these two buffers in the same
// order as the compositor to prevent deadlocks.
DrawTarget* dt = autoTextureFront.GetDrawTarget(mFrontClient);
DrawTarget* dtOnWhite = autoTextureFrontOnWhite.GetDrawTarget(mFrontClientOnWhite);
RotatedBuffer frontBuffer(dt,
dtOnWhite,
mFrontBufferRect,
mFrontBufferRotation);
UpdateDestinationFrom(frontBuffer, updateRegion);
} else {
gfxASurface* surf = autoTextureFront.GetSurface(mFrontClient);
gfxASurface* surfOnWhite = autoTextureFrontOnWhite.GetSurface(mFrontClientOnWhite);
RotatedBuffer frontBuffer(surf,
surfOnWhite,
mFrontBufferRect,
mFrontBufferRotation);
UpdateDestinationFrom(frontBuffer, updateRegion);
}
mFrontAndBackBufferDiffer = false;
}
