nsIntRegion
ContentClientRemoteBuffer::GetUpdatedRegion(const nsIntRegion& aRegionToDraw,
const nsIntRegion& aVisibleRegion,
bool aDidSelfCopy)
{
nsIntRegion updatedRegion;
if (mIsNewBuffer || aDidSelfCopy) {
// A buffer reallocation clears both buffers. The front buffer has all the
// content by now, but the back buffer is still clear. Here, in effect, we
// are saying to copy all of the pixels of the front buffer to the back.
// Also when we self-copied in the buffer, the buffer space
// changes and some changed buffer content isn't reflected in the
// draw or invalidate region (on purpose!). When this happens, we
// need to read back the entire buffer too.
updatedRegion = aVisibleRegion.GetBounds();
mIsNewBuffer = false;
} else {
updatedRegion = aRegionToDraw;
}
NS_ASSERTION(BufferRect().Contains(aRegionToDraw.GetBounds()),
"Update outside of buffer rect!");
MOZ_ASSERT(mTextureClient, "should have a back buffer by now");
return updatedRegion;
}
void
SimpleTiledLayerBuffer::PaintThebes(const nsIntRegion& aNewValidRegion,
const nsIntRegion& aPaintRegion,
LayerManager::DrawThebesLayerCallback aCallback,
void* aCallbackData)
{
mCallback = aCallback;
mCallbackData = aCallbackData;
#ifdef GFX_TILEDLAYER_PREF_WARNINGS
long start = PR_IntervalNow();
#endif
// If this region is empty XMost() - 1 will give us a negative value.
NS_ASSERTION(!aPaintRegion.GetBounds().IsEmpty(), "Empty paint region\n");
PROFILER_LABEL("SimpleTiledLayerBuffer", "PaintThebesUpdate");
Update(aNewValidRegion, aPaintRegion);
#ifdef GFX_TILEDLAYER_PREF_WARNINGS
if (PR_IntervalNow() - start > 10) {
const nsIntRect bounds = aPaintRegion.GetBounds();
printf_stderr("Time to tile [%i, %i, %i, %i] -> %i\n", bounds.x, bounds.y, bounds.width, bounds.height, PR_IntervalNow() - start);
}
#endif
mLastPaintOpaque = mThebesLayer->CanUseOpaqueSurface();
mCallback = nullptr;
mCallbackData = nullptr;
}
already_AddRefed<gfxASurface>
ContentClientIncremental::GetUpdateSurface(BufferType aType,
nsIntRegion& aUpdateRegion)
{
nsIntRect rgnSize = aUpdateRegion.GetBounds();
if (!mBufferRect.Contains(rgnSize)) {
NS_ERROR("update outside of image");
return nullptr;
}
SurfaceDescriptor desc;
if (!mForwarder->AllocSurfaceDescriptor(gfxIntSize(rgnSize.width, rgnSize.height),
mContentType,
&desc)) {
NS_WARNING("creating SurfaceDescriptor failed!");
return nullptr;
}
nsRefPtr<gfxASurface> tmpASurface =
ShadowLayerForwarder::OpenDescriptor(OPEN_READ_WRITE, desc);
if (aType == BUFFER_BLACK) {
MOZ_ASSERT(!IsSurfaceDescriptorValid(mUpdateDescriptor));
mUpdateDescriptor = desc;
} else {
MOZ_ASSERT(!IsSurfaceDescriptorValid(mUpdateDescriptorOnWhite));
MOZ_ASSERT(aType == BUFFER_WHITE);
mUpdateDescriptorOnWhite = desc;
}
return tmpASurface.forget();
}
TemporaryRef<DrawTarget>
ContentClientIncremental::GetUpdateSurface(BufferType aType,
const nsIntRegion& aUpdateRegion)
{
nsIntRect rgnSize = aUpdateRegion.GetBounds();
if (!mBufferRect.Contains(rgnSize)) {
NS_ERROR("update outside of image");
return nullptr;
}
SurfaceDescriptor desc;
if (!mForwarder->AllocSurfaceDescriptor(rgnSize.Size().ToIntSize(),
mContentType,
&desc)) {
NS_WARNING("creating SurfaceDescriptor failed!");
Clear();
return nullptr;
}
if (aType == BUFFER_BLACK) {
MOZ_ASSERT(!IsSurfaceDescriptorValid(mUpdateDescriptor));
mUpdateDescriptor = desc;
} else {
MOZ_ASSERT(!IsSurfaceDescriptorValid(mUpdateDescriptorOnWhite));
MOZ_ASSERT(aType == BUFFER_WHITE);
mUpdateDescriptorOnWhite = desc;
}
return GetDrawTargetForDescriptor(desc, gfx::BackendType::COREGRAPHICS);
}
bool
TextureImageEGL::DirectUpdate(gfxASurface* aSurf, const nsIntRegion& aRegion, const nsIntPoint& aFrom /* = nsIntPoint(0, 0) */)
{
nsIntRect bounds = aRegion.GetBounds();
nsIntRegion region;
if (mTextureState != Valid) {
bounds = nsIntRect(0, 0, mSize.width, mSize.height);
region = nsIntRegion(bounds);
} else {
region = aRegion;
}
mTextureFormat =
UploadSurfaceToTexture(mGLContext,
aSurf,
region,
mTexture,
mTextureState == Created,
bounds.TopLeft() + aFrom,
false);
mTextureState = Valid;
return true;
}
void
Compositor::DrawDiagnostics(DiagnosticFlags aFlags,
const nsIntRegion& aVisibleRegion,
const gfx::Rect& aClipRect,
const gfx::Matrix4x4& aTransform,
uint32_t aFlashCounter)
{
if (!ShouldDrawDiagnostics(aFlags)) {
return;
}
if (aVisibleRegion.GetNumRects() > 1) {
nsIntRegionRectIterator screenIter(aVisibleRegion);
while (const gfx::IntRect* rect = screenIter.Next())
{
DrawDiagnostics(aFlags | DiagnosticFlags::REGION_RECT,
IntRectToRect(*rect), aClipRect, aTransform,
aFlashCounter);
}
}
DrawDiagnostics(aFlags, IntRectToRect(aVisibleRegion.GetBounds()),
aClipRect, aTransform, aFlashCounter);
}
/* static */ void
nsBaseWidget::debug_DumpPaintEvent(FILE * aFileOut,
nsIWidget * aWidget,
const nsIntRegion & aRegion,
const nsAutoCString & aWidgetName,
int32_t aWindowID)
{
NS_ASSERTION(nullptr != aFileOut,"cmon, null output FILE");
NS_ASSERTION(nullptr != aWidget,"cmon, the widget is null");
if (!debug_GetCachedBoolPref("nglayout.debug.paint_dumping"))
return;
nsIntRect rect = aRegion.GetBounds();
fprintf(aFileOut,
"%4d PAINT widget=%p name=%-12s id=0x%-6x bounds-rect=%3d,%-3d %3d,%-3d",
_GetPrintCount(),
(void *) aWidget,
aWidgetName.get(),
aWindowID,
rect.x, rect.y, rect.width, rect.height
);
fprintf(aFileOut,"\n");
}
RenderViewMLGPU::RenderViewMLGPU(FrameBuilder* aBuilder,
MLGRenderTarget* aTarget,
const nsIntRegion& aInvalidRegion)
: RenderViewMLGPU(aBuilder, nullptr) {
mTarget = aTarget;
mInvalidBounds = aInvalidRegion.GetBounds();
// The clear region on the layer manager is the area that must be clear after
// we finish drawing.
mPostClearRegion = aBuilder->GetManager()->GetRegionToClear();
// Clamp the post-clear region to the invalid bounds, since clears don't go
// through the scissor rect if using ClearView.
mPostClearRegion.AndWith(mInvalidBounds);
// Since the post-clear will occlude everything, we include it in the final
// opaque area.
mOccludedRegion.OrWith(ViewAs<LayerPixel>(
mPostClearRegion,
PixelCastJustification::RenderTargetIsParentLayerForRoot));
AL_LOG("RenderView %p root with invalid area %s, clear area %s\n", this,
Stringify(mInvalidBounds).c_str(),
Stringify(mPostClearRegion).c_str());
}
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);
}
}
}
bool
ContentHostSingleBuffered::UpdateThebes(const ThebesBufferData& aData,
const nsIntRegion& aUpdated,
const nsIntRegion& aOldValidRegionBack,
nsIntRegion* aUpdatedRegionBack)
{
aUpdatedRegionBack->SetEmpty();
if (!mTextureHost) {
mInitialised = false;
return true; // FIXME should we return false? Returning true for now
} // to preserve existing behavior of NOT causing IPC errors.
// updated is in screen coordinates. Convert it to buffer coordinates.
nsIntRegion destRegion(aUpdated);
destRegion.MoveBy(-aData.rect().TopLeft());
if (!aData.rect().Contains(aUpdated.GetBounds()) ||
aData.rotation().x > aData.rect().width ||
aData.rotation().y > aData.rect().height) {
NS_ERROR("Invalid update data");
return false;
}
// destRegion is now in logical coordinates relative to the buffer, but we
// need to account for rotation. We do that by moving the region to the
// rotation offset and then wrapping any pixels that extend off the
// bottom/right edges.
// Shift to the rotation point
destRegion.MoveBy(aData.rotation());
nsIntSize bufferSize = aData.rect().Size();
// Select only the pixels that are still within the buffer.
nsIntRegion finalRegion;
finalRegion.And(nsIntRect(nsIntPoint(), bufferSize), destRegion);
// For each of the overlap areas (right, bottom-right, bottom), select those
// pixels and wrap them around to the opposite edge of the buffer rect.
AddWrappedRegion(destRegion, finalRegion, bufferSize, nsIntPoint(aData.rect().width, 0));
AddWrappedRegion(destRegion, finalRegion, bufferSize, nsIntPoint(aData.rect().width, aData.rect().height));
AddWrappedRegion(destRegion, finalRegion, bufferSize, nsIntPoint(0, aData.rect().height));
MOZ_ASSERT(nsIntRect(0, 0, aData.rect().width, aData.rect().height).Contains(finalRegion.GetBounds()));
mTextureHost->Updated(&finalRegion);
if (mTextureHostOnWhite) {
mTextureHostOnWhite->Updated(&finalRegion);
}
mInitialised = true;
mBufferRect = aData.rect();
mBufferRotation = aData.rotation();
return true;
}
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);
}
}
}
SurfaceFormat
UploadSurfaceToTexture(GLContext* gl,
gfxASurface *aSurface,
const nsIntRegion& aDstRegion,
GLuint& aTexture,
bool aOverwrite,
const nsIntPoint& aSrcPoint,
bool aPixelBuffer,
GLenum aTextureUnit,
GLenum aTextureTarget)
{
nsRefPtr<gfxImageSurface> imageSurface = aSurface->GetAsImageSurface();
unsigned char* data = nullptr;
if (!imageSurface ||
(imageSurface->Format() != gfxImageFormatARGB32 &&
imageSurface->Format() != gfxImageFormatRGB24 &&
imageSurface->Format() != gfxImageFormatRGB16_565 &&
imageSurface->Format() != gfxImageFormatA8)) {
// We can't get suitable pixel data for the surface, make a copy
nsIntRect bounds = aDstRegion.GetBounds();
imageSurface =
new gfxImageSurface(gfxIntSize(bounds.width, bounds.height),
gfxImageFormatARGB32);
nsRefPtr<gfxContext> context = new gfxContext(imageSurface);
context->Translate(-gfxPoint(aSrcPoint.x, aSrcPoint.y));
context->SetSource(aSurface);
context->Paint();
data = imageSurface->Data();
NS_ASSERTION(!aPixelBuffer,
"Must be using an image compatible surface with pixel buffers!");
} else {
// If a pixel buffer is bound the data pointer parameter is relative
// to the start of the data block.
if (!aPixelBuffer) {
data = imageSurface->Data();
}
data += DataOffset(aSrcPoint, imageSurface->Stride(),
imageSurface->Format());
}
MOZ_ASSERT(imageSurface);
imageSurface->Flush();
return UploadImageDataToTexture(gl,
data,
imageSurface->Stride(),
imageSurface->Format(),
aDstRegion, aTexture, aOverwrite,
aPixelBuffer, aTextureUnit, aTextureTarget);
}
void
ContentClientDoubleBuffered::UpdateDestinationFrom(const RotatedBuffer& aSource,
const nsIntRegion& aUpdateRegion)
{
DrawIterator iter;
while (DrawTarget* destDT =
BorrowDrawTargetForQuadrantUpdate(aUpdateRegion.GetBounds(), BUFFER_BLACK, &iter)) {
bool isClippingCheap = IsClippingCheap(destDT, iter.mDrawRegion);
if (isClippingCheap) {
gfxUtils::ClipToRegion(destDT, iter.mDrawRegion);
}
aSource.DrawBufferWithRotation(destDT, BUFFER_BLACK, 1.0, CompositionOp::OP_SOURCE);
if (isClippingCheap) {
destDT->PopClip();
}
// Flush the destination before the sources become inaccessible (Unlock).
destDT->Flush();
ReturnDrawTargetToBuffer(destDT);
}
if (aSource.HaveBufferOnWhite()) {
MOZ_ASSERT(HaveBufferOnWhite());
DrawIterator whiteIter;
while (DrawTarget* destDT =
BorrowDrawTargetForQuadrantUpdate(aUpdateRegion.GetBounds(), BUFFER_WHITE, &whiteIter)) {
bool isClippingCheap = IsClippingCheap(destDT, whiteIter.mDrawRegion);
if (isClippingCheap) {
gfxUtils::ClipToRegion(destDT, whiteIter.mDrawRegion);
}
aSource.DrawBufferWithRotation(destDT, BUFFER_WHITE, 1.0, CompositionOp::OP_SOURCE);
if (isClippingCheap) {
destDT->PopClip();
}
// Flush the destination before the sources become inaccessible (Unlock).
destDT->Flush();
ReturnDrawTargetToBuffer(destDT);
}
}
}
void
TiledLayerBufferComposite::Upload(const BasicTiledLayerBuffer* aMainMemoryTiledBuffer,
const nsIntRegion& aNewValidRegion,
const nsIntRegion& aInvalidateRegion,
const gfxSize& aResolution)
{
#ifdef GFX_TILEDLAYER_PREF_WARNINGS
printf_stderr("Upload %i, %i, %i, %i\n", aInvalidateRegion.GetBounds().x, aInvalidateRegion.GetBounds().y, aInvalidateRegion.GetBounds().width, aInvalidateRegion.GetBounds().height);
long start = PR_IntervalNow();
#endif
mFrameResolution = aResolution;
mMainMemoryTiledBuffer = aMainMemoryTiledBuffer;
Update(aNewValidRegion, aInvalidateRegion);
mMainMemoryTiledBuffer = nullptr;
#ifdef GFX_TILEDLAYER_PREF_WARNINGS
if (PR_IntervalNow() - start > 10) {
printf_stderr("Time to upload %i\n", PR_IntervalNow() - start);
}
#endif
}
void
TextureImageEGL::GetUpdateRegion(nsIntRegion& aForRegion)
{
if (mTextureState != Valid) {
// if the texture hasn't been initialized yet, force the
// client to paint everything
aForRegion = nsIntRect(nsIntPoint(0, 0), gfx::ThebesIntSize(mSize));
}
// We can only draw a rectangle, not subregions due to
// the way that our texture upload functions work. If
// needed, we /could/ do multiple texture uploads if we have
// non-overlapping rects, but that's a tradeoff.
aForRegion = nsIntRegion(aForRegion.GetBounds());
}
void
BasicThebesLayerBuffer::SetBackingBufferAndUpdateFrom(
gfxASurface* aBuffer,
gfxASurface* aSource, const nsIntRect& aRect, const nsIntPoint& aRotation,
const nsIntRegion& aUpdateRegion)
{
SetBackingBuffer(aBuffer, aRect, aRotation);
nsRefPtr<gfxContext> destCtx =
GetContextForQuadrantUpdate(aUpdateRegion.GetBounds());
destCtx->SetOperator(gfxContext::OPERATOR_SOURCE);
if (IsClippingCheap(destCtx, aUpdateRegion)) {
gfxUtils::ClipToRegion(destCtx, aUpdateRegion);
}
BasicThebesLayerBuffer srcBuffer(aSource, aRect, aRotation);
srcBuffer.DrawBufferWithRotation(destCtx, 1.0);
}
void
Compositor::DrawDiagnostics(DiagnosticFlags aFlags,
const nsIntRegion& aVisibleRegion,
const gfx::IntRect& aClipRect,
const gfx::Matrix4x4& aTransform,
uint32_t aFlashCounter)
{
if (!ShouldDrawDiagnostics(aFlags)) {
return;
}
if (aVisibleRegion.GetNumRects() > 1) {
for (auto iter = aVisibleRegion.RectIter(); !iter.Done(); iter.Next()) {
DrawDiagnostics(aFlags | DiagnosticFlags::REGION_RECT,
IntRectToRect(iter.Get()), aClipRect, aTransform,
aFlashCounter);
}
}
DrawDiagnostics(aFlags, IntRectToRect(aVisibleRegion.GetBounds()),
aClipRect, aTransform, aFlashCounter);
}
void
TiledContentHost::RenderLayerBuffer(TiledLayerBufferComposite& aLayerBuffer,
const gfxRGBA* aBackgroundColor,
EffectChain& aEffectChain,
float aOpacity,
const gfx::Filter& aFilter,
const gfx::Rect& aClipRect,
nsIntRegion aVisibleRegion,
gfx::Matrix4x4 aTransform)
{
if (!mCompositor) {
NS_WARNING("Can't render tiled content host - no compositor");
return;
}
float resolution = aLayerBuffer.GetResolution();
gfx::Size layerScale(1, 1);
// We assume that the current frame resolution is the one used in our high
// precision layer buffer. Compensate for a changing frame resolution when
// rendering the low precision buffer.
if (aLayerBuffer.GetFrameResolution() != mTiledBuffer.GetFrameResolution()) {
const CSSToParentLayerScale2D& layerResolution = aLayerBuffer.GetFrameResolution();
const CSSToParentLayerScale2D& localResolution = mTiledBuffer.GetFrameResolution();
layerScale.width = layerResolution.xScale / localResolution.xScale;
layerScale.height = layerResolution.yScale / localResolution.yScale;
aVisibleRegion.ScaleRoundOut(layerScale.width, layerScale.height);
}
// Make sure we don't render at low resolution where we have valid high
// resolution content, to avoid overdraw and artifacts with semi-transparent
// layers.
nsIntRegion maskRegion;
if (resolution != mTiledBuffer.GetResolution()) {
maskRegion = mTiledBuffer.GetValidRegion();
// XXX This should be ScaleRoundIn, but there is no such function on
// nsIntRegion.
maskRegion.ScaleRoundOut(layerScale.width, layerScale.height);
}
// Make sure the resolution and difference in frame resolution are accounted
// for in the layer transform.
aTransform.PreScale(1/(resolution * layerScale.width),
1/(resolution * layerScale.height), 1);
DiagnosticFlags componentAlphaDiagnostic = DiagnosticFlags::NO_DIAGNOSTIC;
nsIntRegion compositeRegion = aLayerBuffer.GetValidRegion();
compositeRegion.AndWith(aVisibleRegion);
compositeRegion.SubOut(maskRegion);
IntRect visibleRect = aVisibleRegion.GetBounds();
if (compositeRegion.IsEmpty()) {
return;
}
if (aBackgroundColor) {
nsIntRegion backgroundRegion = compositeRegion;
backgroundRegion.ScaleRoundOut(resolution, resolution);
EffectChain effect;
effect.mPrimaryEffect = new EffectSolidColor(ToColor(*aBackgroundColor));
nsIntRegionRectIterator it(backgroundRegion);
for (const IntRect* rect = it.Next(); rect != nullptr; rect = it.Next()) {
Rect graphicsRect(rect->x, rect->y, rect->width, rect->height);
mCompositor->DrawQuad(graphicsRect, aClipRect, effect, 1.0, aTransform);
}
}
for (size_t i = 0; i < aLayerBuffer.GetTileCount(); ++i) {
TileHost& tile = aLayerBuffer.GetTile(i);
if (tile.IsPlaceholderTile()) {
continue;
}
TileIntPoint tilePosition = aLayerBuffer.GetPlacement().TilePosition(i);
// A sanity check that catches a lot of mistakes.
MOZ_ASSERT(tilePosition.x == tile.mTilePosition.x && tilePosition.y == tile.mTilePosition.y);
IntPoint tileOffset = aLayerBuffer.GetTileOffset(tilePosition);
nsIntRegion tileDrawRegion = IntRect(tileOffset, aLayerBuffer.GetScaledTileSize());
tileDrawRegion.AndWith(compositeRegion);
if (tileDrawRegion.IsEmpty()) {
continue;
}
tileDrawRegion.ScaleRoundOut(resolution, resolution);
RenderTile(tile, aEffectChain, aOpacity,
aTransform, aFilter, aClipRect, tileDrawRegion,
tileOffset * resolution, aLayerBuffer.GetTileSize(),
gfx::Rect(visibleRect.x, visibleRect.y,
visibleRect.width, visibleRect.height));
if (tile.mTextureHostOnWhite) {
componentAlphaDiagnostic = DiagnosticFlags::COMPONENT_ALPHA;
}
}
gfx::Rect rect(visibleRect.x, visibleRect.y,
visibleRect.width, visibleRect.height);
GetCompositor()->DrawDiagnostics(DiagnosticFlags::CONTENT | componentAlphaDiagnostic,
rect, aClipRect, aTransform, mFlashCounter);
}
SimpleTiledLayerTile
SimpleTiledLayerBuffer::ValidateTile(SimpleTiledLayerTile aTile,
const nsIntPoint& aTileOrigin,
const nsIntRegion& aDirtyRegion)
{
PROFILER_LABEL("SimpleTiledLayerBuffer", "ValidateTile");
static gfx::IntSize kTileSize(gfxPrefs::LayersTileWidth(), gfxPrefs::LayersTileHeight());
gfx::SurfaceFormat tileFormat = gfxPlatform::GetPlatform()->Optimal2DFormatForContent(GetContentType());
// if this is true, we're using a separate buffer to do our drawing first
bool doBufferedDrawing = true;
bool fullPaint = false;
RefPtr<TextureClient> textureClient = mManager->GetSimpleTileTexturePool(tileFormat)->GetTextureClientWithAutoRecycle();
if (!textureClient) {
NS_WARNING("TextureClient allocation failed");
return SimpleTiledLayerTile();
}
if (!textureClient->Lock(OPEN_READ_WRITE)) {
NS_WARNING("TextureClient lock failed");
return SimpleTiledLayerTile();
}
if (!textureClient->CanExposeDrawTarget()) {
doBufferedDrawing = false;
}
RefPtr<DrawTarget> drawTarget;
unsigned char *bufferData = nullptr;
// these are set/updated differently based on doBufferedDrawing
nsIntRect drawBounds;
nsIntRegion drawRegion;
nsIntRegion invalidateRegion;
RefPtr<DrawTarget> srcDT;
uint8_t* srcData = nullptr;
int32_t srcStride = 0;
gfx::IntSize srcSize;
gfx::SurfaceFormat srcFormat = gfx::SurfaceFormat::UNKNOWN;
if (doBufferedDrawing) {
// try to directly access the pixels of the TextureClient
srcDT = textureClient->GetAsDrawTarget();
if (srcDT->LockBits(&srcData, &srcSize, &srcStride, &srcFormat)) {
if (!aTile.mCachedBuffer) {
aTile.mCachedBuffer = SharedBuffer::Create(srcStride * srcSize.height);
fullPaint = true;
}
bufferData = (unsigned char*) aTile.mCachedBuffer->Data();
drawTarget = gfxPlatform::GetPlatform()->CreateDrawTargetForData(bufferData,
kTileSize,
srcStride,
tileFormat);
if (fullPaint) {
drawBounds = nsIntRect(aTileOrigin.x, aTileOrigin.y, GetScaledTileSize().width, GetScaledTileSize().height);
drawRegion = nsIntRegion(drawBounds);
} else {
drawBounds = aDirtyRegion.GetBounds();
drawRegion = nsIntRegion(drawBounds);
if (GetContentType() == gfxContentType::COLOR_ALPHA)
drawTarget->ClearRect(Rect(drawBounds.x - aTileOrigin.x, drawBounds.y - aTileOrigin.y,
drawBounds.width, drawBounds.height));
}
} else {
// failed to obtain the client as an ImageSurface
doBufferedDrawing = false;
}
}
// this might get set above if we couldn't extract out a buffer
if (!doBufferedDrawing) {
drawTarget = textureClient->GetAsDrawTarget();
fullPaint = true;
drawBounds = nsIntRect(aTileOrigin.x, aTileOrigin.y, GetScaledTileSize().width, GetScaledTileSize().height);
drawRegion = nsIntRegion(drawBounds);
if (GetContentType() == gfxContentType::COLOR_ALPHA)
drawTarget->ClearRect(Rect(0, 0, drawBounds.width, drawBounds.height));
}
// do the drawing
RefPtr<gfxContext> ctxt = new gfxContext(drawTarget);
ctxt->Scale(mResolution, mResolution);
ctxt->Translate(gfxPoint(-aTileOrigin.x, -aTileOrigin.y));
mCallback(mThebesLayer, ctxt,
drawRegion,
fullPaint ? DrawRegionClip::CLIP_NONE : DrawRegionClip::DRAW_SNAPPED, // XXX DRAW or DRAW_SNAPPED?
invalidateRegion,
mCallbackData);
ctxt = nullptr;
if (doBufferedDrawing) {
memcpy(srcData, bufferData, srcSize.height * srcStride);
bufferData = nullptr;
srcDT->ReleaseBits(srcData);
srcDT = nullptr;
}
drawTarget = nullptr;
textureClient->Unlock();
if (!mCompositableClient->AddTextureClient(textureClient)) {
NS_WARNING("Failed to add tile TextureClient [simple]");
return SimpleTiledLayerTile();
}
// aTile.mCachedBuffer was set earlier
aTile.mTileBuffer = textureClient;
aTile.mManager = mManager;
aTile.mLastUpdate = TimeStamp::Now();
return aTile;
}
void
ClientSingleTiledLayerBuffer::PaintThebes(const nsIntRegion& aNewValidRegion,
const nsIntRegion& aPaintRegion,
const nsIntRegion& aDirtyRegion,
LayerManager::DrawPaintedLayerCallback aCallback,
void* aCallbackData,
bool aIsProgressive)
{
mWasLastPaintProgressive = aIsProgressive;
// Compare layer valid region size to current backbuffer size, discard if not matching.
gfx::IntSize size = aNewValidRegion.GetBounds().Size();
gfx::IntPoint origin = aNewValidRegion.GetBounds().TopLeft();
nsIntRegion paintRegion = aPaintRegion;
RefPtr<TextureClient> discardedFrontBuffer = nullptr;
RefPtr<TextureClient> discardedFrontBufferOnWhite = nullptr;
nsIntRegion discardedValidRegion;
if (mSize != size ||
mTilingOrigin != origin) {
discardedFrontBuffer = mTile.mFrontBuffer;
discardedFrontBufferOnWhite = mTile.mFrontBufferOnWhite;
discardedValidRegion = mValidRegion;
TILING_LOG("TILING %p: Single-tile valid region changed. Discarding buffers.\n", &mPaintedLayer)
;
ResetPaintedAndValidState();
mSize = size;
mTilingOrigin = origin;
paintRegion = aNewValidRegion;
}
SurfaceMode mode;
gfxContentType content = GetContentType(&mode);
mFormat = gfxPlatform::GetPlatform()->OptimalFormatForContent(content);
if (mTile.IsPlaceholderTile()) {
mTile.SetTextureAllocator(this);
}
// The dirty region relative to the top-left of the tile.
nsIntRegion tileDirtyRegion = paintRegion.MovedBy(-mTilingOrigin);
nsIntRegion extraPainted;
RefPtr<TextureClient> backBufferOnWhite;
RefPtr<TextureClient> backBuffer =
mTile.GetBackBuffer(mCompositableClient,
tileDirtyRegion,
content, mode,
extraPainted,
&backBufferOnWhite);
mTile.mUpdateRect = tileDirtyRegion.GetBounds().Union(extraPainted.GetBounds());
extraPainted.MoveBy(mTilingOrigin);
extraPainted.And(extraPainted, aNewValidRegion);
mPaintedRegion.OrWith(paintRegion);
mPaintedRegion.OrWith(extraPainted);
if (!backBuffer) {
return;
}
RefPtr<gfx::DrawTarget> dt = backBuffer->BorrowDrawTarget();
RefPtr<gfx::DrawTarget> dtOnWhite;
if (backBufferOnWhite) {
dtOnWhite = backBufferOnWhite->BorrowDrawTarget();
}
if (mode != SurfaceMode::SURFACE_OPAQUE) {
for (auto iter = tileDirtyRegion.RectIter(); !iter.Done(); iter.Next()) {
const gfx::IntRect& rect = iter.Get();
if (dtOnWhite) {
dt->FillRect(gfx::Rect(rect.x, rect.y, rect.width, rect.height),
gfx::ColorPattern(gfx::Color(0.0, 0.0, 0.0, 1.0)));
dtOnWhite->FillRect(gfx::Rect(rect.x, rect.y, rect.width, rect.height),
gfx::ColorPattern(gfx::Color(1.0, 1.0, 1.0, 1.0)));
} else {
dt->ClearRect(gfx::Rect(rect.x, rect.y, rect.width, rect.height));
}
}
}
// If the old frontbuffer was discarded then attempt to copy what we
// can from it to the new backbuffer.
if (discardedFrontBuffer) {
nsIntRegion copyableRegion;
copyableRegion.And(aNewValidRegion, discardedValidRegion);
copyableRegion.SubOut(aDirtyRegion);
if (!copyableRegion.IsEmpty()) {
TextureClientAutoLock frontLock(discardedFrontBuffer,
OpenMode::OPEN_READ);
if (frontLock.Succeeded()) {
for (auto iter = copyableRegion.RectIter(); !iter.Done(); iter.Next()) {
const gfx::IntRect rect = iter.Get() - discardedValidRegion.GetBounds().TopLeft();
const gfx::IntPoint dest = iter.Get().TopLeft() - mTilingOrigin;
discardedFrontBuffer->CopyToTextureClient(backBuffer, &rect, &dest);
}
}
if (discardedFrontBufferOnWhite && backBufferOnWhite) {
TextureClientAutoLock frontOnWhiteLock(discardedFrontBufferOnWhite,
OpenMode::OPEN_READ);
if (frontOnWhiteLock.Succeeded()) {
for (auto iter = copyableRegion.RectIter(); !iter.Done(); iter.Next()) {
const gfx::IntRect rect = iter.Get() - discardedValidRegion.GetBounds().TopLeft();
const gfx::IntPoint dest = iter.Get().TopLeft() - mTilingOrigin;
discardedFrontBufferOnWhite->CopyToTextureClient(backBufferOnWhite,
&rect, &dest);
}
}
}
TILING_LOG("TILING %p: Region copied from discarded frontbuffer %s\n", &mPaintedLayer, Stringify(copyableRegion).c_str());
// We don't need to repaint valid content that was just copied.
paintRegion.SubOut(copyableRegion);
}
}
if (dtOnWhite) {
dt = gfx::Factory::CreateDualDrawTarget(dt, dtOnWhite);
dtOnWhite = nullptr;
}
{
RefPtr<gfxContext> ctx = gfxContext::CreateOrNull(dt);
if (!ctx) {
gfxDevCrash(gfx::LogReason::InvalidContext) << "SingleTiledContextClient context problem " << gfx::hexa(dt);
return;
}
ctx->SetMatrix(ctx->CurrentMatrix().Translate(-mTilingOrigin.x, -mTilingOrigin.y));
aCallback(&mPaintedLayer, ctx, paintRegion, paintRegion, DrawRegionClip::DRAW, nsIntRegion(), aCallbackData);
}
// Mark the area we just drew into the back buffer as invalid in the front buffer as they're
// now out of sync.
mTile.mInvalidFront.OrWith(tileDirtyRegion);
// The new buffer is now validated, remove the dirty region from it.
mTile.mInvalidBack.SubOut(tileDirtyRegion);
dt = nullptr;
mTile.Flip();
UnlockTile(mTile);
if (backBuffer->HasIntermediateBuffer()) {
// If our new buffer has an internal buffer, we don't want to keep another
// TextureClient around unnecessarily, so discard the back-buffer.
mTile.DiscardBackBuffer();
}
mValidRegion = aNewValidRegion;
mLastPaintSurfaceMode = mode;
mLastPaintContentType = content;
}
SimpleTiledLayerTile
SimpleTiledLayerBuffer::ValidateTile(SimpleTiledLayerTile aTile,
const nsIntPoint& aTileOrigin,
const nsIntRegion& aDirtyRegion)
{
PROFILER_LABEL("SimpleTiledLayerBuffer", "ValidateTile");
static gfx::IntSize kTileSize(TILEDLAYERBUFFER_TILE_SIZE, TILEDLAYERBUFFER_TILE_SIZE);
gfx::SurfaceFormat tileFormat = gfxPlatform::GetPlatform()->Optimal2DFormatForContent(GetContentType());
// if this is true, we're using a separate buffer to do our drawing first
bool doBufferedDrawing = true;
bool fullPaint = false;
RefPtr<TextureClient> textureClient = mManager->GetSimpleTileTexturePool(tileFormat)->GetTextureClientWithAutoRecycle();
if (!textureClient) {
NS_WARNING("TextureClient allocation failed");
return SimpleTiledLayerTile();
}
if (!textureClient->Lock(OPEN_WRITE)) {
NS_WARNING("TextureClient lock failed");
return SimpleTiledLayerTile();
}
TextureClientSurface *textureClientSurf = textureClient->AsTextureClientSurface();
if (!textureClientSurf) {
doBufferedDrawing = false;
}
RefPtr<DrawTarget> drawTarget;
nsRefPtr<gfxImageSurface> clientAsImageSurface;
unsigned char *bufferData = nullptr;
// these are set/updated differently based on doBufferedDrawing
nsIntRect drawBounds;
nsIntRegion drawRegion;
nsIntRegion invalidateRegion;
if (doBufferedDrawing) {
// try to obtain the TextureClient as an ImageSurface, so that we can
// access the pixels directly
nsRefPtr<gfxASurface> asurf = textureClientSurf->GetAsSurface();
clientAsImageSurface = asurf ? asurf->GetAsImageSurface() : nullptr;
if (clientAsImageSurface) {
int32_t bufferStride = clientAsImageSurface->Stride();
if (!aTile.mCachedBuffer) {
aTile.mCachedBuffer = SharedBuffer::Create(clientAsImageSurface->GetDataSize());
fullPaint = true;
}
bufferData = (unsigned char*) aTile.mCachedBuffer->Data();
drawTarget = gfxPlatform::GetPlatform()->CreateDrawTargetForData(bufferData,
kTileSize,
bufferStride,
tileFormat);
if (fullPaint) {
drawBounds = nsIntRect(aTileOrigin.x, aTileOrigin.y, GetScaledTileLength(), GetScaledTileLength());
drawRegion = nsIntRegion(drawBounds);
} else {
drawBounds = aDirtyRegion.GetBounds();
drawRegion = nsIntRegion(drawBounds);
if (GetContentType() == gfxContentType::COLOR_ALPHA)
drawTarget->ClearRect(Rect(drawBounds.x - aTileOrigin.x, drawBounds.y - aTileOrigin.y,
drawBounds.width, drawBounds.height));
}
} else {
// failed to obtain the client as an ImageSurface
doBufferedDrawing = false;
}
}
// this might get set above if we couldn't extract out a buffer
if (!doBufferedDrawing) {
drawTarget = textureClient->AsTextureClientDrawTarget()->GetAsDrawTarget();
fullPaint = true;
drawBounds = nsIntRect(aTileOrigin.x, aTileOrigin.y, GetScaledTileLength(), GetScaledTileLength());
drawRegion = nsIntRegion(drawBounds);
if (GetContentType() == gfxContentType::COLOR_ALPHA)
drawTarget->ClearRect(Rect(0, 0, drawBounds.width, drawBounds.height));
}
// do the drawing
RefPtr<gfxContext> ctxt = new gfxContext(drawTarget);
ctxt->Scale(mResolution, mResolution);
ctxt->Translate(gfxPoint(-aTileOrigin.x, -aTileOrigin.y));
mCallback(mThebesLayer, ctxt,
drawRegion,
fullPaint ? DrawRegionClip::CLIP_NONE : DrawRegionClip::DRAW_SNAPPED, // XXX DRAW or DRAW_SNAPPED?
invalidateRegion,
mCallbackData);
ctxt = nullptr;
drawTarget = nullptr;
if (doBufferedDrawing) {
memcpy(clientAsImageSurface->Data(), bufferData, clientAsImageSurface->GetDataSize());
clientAsImageSurface = nullptr;
bufferData = nullptr;
}
textureClient->Unlock();
if (!mCompositableClient->AddTextureClient(textureClient)) {
NS_WARNING("Failed to add tile TextureClient [simple]");
return SimpleTiledLayerTile();
}
// aTile.mCachedBuffer was set earlier
aTile.mTileBuffer = textureClient;
aTile.mManager = mManager;
aTile.mLastUpdate = TimeStamp::Now();
return aTile;
}
void
TiledContentHost::RenderLayerBuffer(TiledLayerBufferComposite& aLayerBuffer,
const gfxRGBA* aBackgroundColor,
EffectChain& aEffectChain,
float aOpacity,
const gfx::Filter& aFilter,
const gfx::Rect& aClipRect,
nsIntRegion aVisibleRegion,
gfx::Matrix4x4 aTransform)
{
if (!mCompositor) {
NS_WARNING("Can't render tiled content host - no compositor");
return;
}
float resolution = aLayerBuffer.GetResolution();
gfx::Size layerScale(1, 1);
// We assume that the current frame resolution is the one used in our high
// precision layer buffer. Compensate for a changing frame resolution when
// rendering the low precision buffer.
if (aLayerBuffer.GetFrameResolution() != mTiledBuffer.GetFrameResolution()) {
const CSSToParentLayerScale& layerResolution = aLayerBuffer.GetFrameResolution();
const CSSToParentLayerScale& localResolution = mTiledBuffer.GetFrameResolution();
layerScale.width = layerScale.height = layerResolution.scale / localResolution.scale;
aVisibleRegion.ScaleRoundOut(layerScale.width, layerScale.height);
}
// If we're drawing the low precision buffer, make sure the high precision
// buffer is masked out to avoid overdraw and rendering artifacts with
// non-opaque layers.
nsIntRegion maskRegion;
if (resolution != mTiledBuffer.GetResolution()) {
maskRegion = mTiledBuffer.GetValidRegion();
// XXX This should be ScaleRoundIn, but there is no such function on
// nsIntRegion.
maskRegion.ScaleRoundOut(layerScale.width, layerScale.height);
}
// Make sure the resolution and difference in frame resolution are accounted
// for in the layer transform.
aTransform.PreScale(1/(resolution * layerScale.width),
1/(resolution * layerScale.height), 1);
uint32_t rowCount = 0;
uint32_t tileX = 0;
nsIntRect visibleRect = aVisibleRegion.GetBounds();
gfx::IntSize scaledTileSize = aLayerBuffer.GetScaledTileSize();
for (int32_t x = visibleRect.x; x < visibleRect.x + visibleRect.width;) {
rowCount++;
int32_t tileStartX = aLayerBuffer.GetTileStart(x, scaledTileSize.width);
int32_t w = scaledTileSize.width - tileStartX;
if (x + w > visibleRect.x + visibleRect.width) {
w = visibleRect.x + visibleRect.width - x;
}
int tileY = 0;
for (int32_t y = visibleRect.y; y < visibleRect.y + visibleRect.height;) {
int32_t tileStartY = aLayerBuffer.GetTileStart(y, scaledTileSize.height);
int32_t h = scaledTileSize.height - tileStartY;
if (y + h > visibleRect.y + visibleRect.height) {
h = visibleRect.y + visibleRect.height - y;
}
TileHost tileTexture = aLayerBuffer.
GetTile(nsIntPoint(aLayerBuffer.RoundDownToTileEdge(x, scaledTileSize.width),
aLayerBuffer.RoundDownToTileEdge(y, scaledTileSize.height)));
if (tileTexture != aLayerBuffer.GetPlaceholderTile()) {
nsIntRegion tileDrawRegion;
tileDrawRegion.And(nsIntRect(x, y, w, h), aLayerBuffer.GetValidRegion());
tileDrawRegion.And(tileDrawRegion, aVisibleRegion);
tileDrawRegion.Sub(tileDrawRegion, maskRegion);
if (!tileDrawRegion.IsEmpty()) {
tileDrawRegion.ScaleRoundOut(resolution, resolution);
nsIntPoint tileOffset((x - tileStartX) * resolution,
(y - tileStartY) * resolution);
gfx::IntSize tileSize = aLayerBuffer.GetTileSize();
RenderTile(tileTexture, aBackgroundColor, aEffectChain, aOpacity, aTransform,
aFilter, aClipRect, tileDrawRegion, tileOffset,
nsIntSize(tileSize.width, tileSize.height));
}
}
tileY++;
y += h;
}
tileX++;
x += w;
}
gfx::Rect rect(visibleRect.x, visibleRect.y,
visibleRect.width, visibleRect.height);
GetCompositor()->DrawDiagnostics(DiagnosticFlags::CONTENT,
rect, aClipRect, aTransform, mFlashCounter);
}
void
PaintedLayerD3D9::DrawRegion(nsIntRegion &aRegion, SurfaceMode aMode,
const nsTArray<ReadbackProcessor::Update>& aReadbackUpdates)
{
nsIntRect visibleRect = mVisibleRegion.GetBounds();
nsRefPtr<gfxASurface> destinationSurface;
nsIntRect bounds = aRegion.GetBounds();
nsRefPtr<IDirect3DTexture9> tmpTexture;
OpaqueRenderer opaqueRenderer(aRegion);
TransparentRenderer transparentRenderer(aRegion);
OpaqueRenderer opaqueRendererOnWhite(aRegion);
switch (aMode)
{
case SurfaceMode::SURFACE_OPAQUE:
destinationSurface = opaqueRenderer.Begin(this);
break;
case SurfaceMode::SURFACE_SINGLE_CHANNEL_ALPHA: {
destinationSurface = transparentRenderer.Begin(this);
// If the contents of this layer don't require component alpha in the
// end of rendering, it's safe to enable Cleartype since all the Cleartype
// glyphs must be over (or under) opaque pixels.
destinationSurface->SetSubpixelAntialiasingEnabled(!(mContentFlags & CONTENT_COMPONENT_ALPHA));
break;
}
case SurfaceMode::SURFACE_COMPONENT_ALPHA: {
nsRefPtr<gfxWindowsSurface> onBlack = opaqueRenderer.Begin(this);
nsRefPtr<gfxWindowsSurface> onWhite = opaqueRendererOnWhite.Begin(this);
if (onBlack && onWhite) {
FillSurface(onBlack, aRegion, bounds.TopLeft(), gfxRGBA(0.0, 0.0, 0.0, 1.0));
FillSurface(onWhite, aRegion, bounds.TopLeft(), gfxRGBA(1.0, 1.0, 1.0, 1.0));
gfxASurface* surfaces[2] = { onBlack.get(), onWhite.get() };
destinationSurface = new gfxTeeSurface(surfaces, ArrayLength(surfaces));
// Using this surface as a source will likely go horribly wrong, since
// only the onBlack surface will really be used, so alpha information will
// be incorrect.
destinationSurface->SetAllowUseAsSource(false);
}
break;
}
}
if (!destinationSurface)
return;
MOZ_ASSERT(gfxPlatform::GetPlatform()->SupportsAzureContentForType(BackendType::CAIRO));
RefPtr<DrawTarget> dt =
gfxPlatform::GetPlatform()->CreateDrawTargetForSurface(destinationSurface,
IntSize(destinationSurface->GetSize().width,
destinationSurface->GetSize().height));
nsRefPtr<gfxContext> context = new gfxContext(dt);
context->SetMatrix(context->CurrentMatrix().Translate(-bounds.x, -bounds.y));
LayerManagerD3D9::CallbackInfo cbInfo = mD3DManager->GetCallbackInfo();
cbInfo.Callback(this, context, aRegion, DrawRegionClip::CLIP_NONE, nsIntRegion(), cbInfo.CallbackData);
for (uint32_t i = 0; i < aReadbackUpdates.Length(); ++i) {
NS_ASSERTION(aMode == SurfaceMode::SURFACE_OPAQUE,
"Transparent surfaces should not be used for readback");
const ReadbackProcessor::Update& update = aReadbackUpdates[i];
nsIntPoint offset = update.mLayer->GetBackgroundLayerOffset();
nsRefPtr<gfxContext> ctx =
update.mLayer->GetSink()->BeginUpdate(update.mUpdateRect + offset,
update.mSequenceCounter);
if (ctx) {
ctx->SetMatrix(ctx->CurrentMatrix().Translate(offset.x, offset.y));
ctx->SetSource(destinationSurface, gfxPoint(bounds.x, bounds.y));
ctx->Paint();
update.mLayer->GetSink()->EndUpdate(ctx, update.mUpdateRect + offset);
}
}
// Release the cairo d3d9 surface before we try to composite it
context = nullptr;
nsAutoTArray<IDirect3DTexture9*,2> srcTextures;
nsAutoTArray<IDirect3DTexture9*,2> destTextures;
switch (aMode)
{
case SurfaceMode::SURFACE_OPAQUE:
// Must release reference to dest surface before ending drawing
destinationSurface = nullptr;
opaqueRenderer.End();
srcTextures.AppendElement(opaqueRenderer.GetTexture());
destTextures.AppendElement(mTexture);
break;
case SurfaceMode::SURFACE_SINGLE_CHANNEL_ALPHA:
// Must release reference to dest surface before ending drawing
destinationSurface = nullptr;
transparentRenderer.End();
srcTextures.AppendElement(transparentRenderer.GetTexture());
destTextures.AppendElement(mTexture);
break;
case SurfaceMode::SURFACE_COMPONENT_ALPHA: {
// Must release reference to dest surface before ending drawing
destinationSurface = nullptr;
opaqueRenderer.End();
opaqueRendererOnWhite.End();
srcTextures.AppendElement(opaqueRenderer.GetTexture());
destTextures.AppendElement(mTexture);
srcTextures.AppendElement(opaqueRendererOnWhite.GetTexture());
destTextures.AppendElement(mTextureOnWhite);
break;
}
}
NS_ASSERTION(srcTextures.Length() == destTextures.Length(), "Mismatched lengths");
// Copy to the texture.
for (uint32_t i = 0; i < srcTextures.Length(); ++i) {
nsRefPtr<IDirect3DSurface9> srcSurface;
nsRefPtr<IDirect3DSurface9> dstSurface;
destTextures[i]->GetSurfaceLevel(0, getter_AddRefs(dstSurface));
srcTextures[i]->GetSurfaceLevel(0, getter_AddRefs(srcSurface));
nsIntRegionRectIterator iter(aRegion);
const nsIntRect *iterRect;
while ((iterRect = iter.Next())) {
RECT rect;
rect.left = iterRect->x - bounds.x;
rect.top = iterRect->y - bounds.y;
rect.right = iterRect->XMost() - bounds.x;
rect.bottom = iterRect->YMost() - bounds.y;
POINT point;
point.x = iterRect->x - visibleRect.x;
point.y = iterRect->y - visibleRect.y;
device()->UpdateSurface(srcSurface, &rect, dstSurface, &point);
}
}
}
SurfaceFormat
UploadImageDataToTexture(GLContext* gl,
unsigned char* aData,
int32_t aStride,
gfxImageFormat aFormat,
const nsIntRegion& aDstRegion,
GLuint& aTexture,
bool aOverwrite,
bool aPixelBuffer,
GLenum aTextureUnit,
GLenum aTextureTarget)
{
bool textureInited = aOverwrite ? false : true;
gl->MakeCurrent();
gl->fActiveTexture(aTextureUnit);
if (!aTexture) {
gl->fGenTextures(1, &aTexture);
gl->fBindTexture(aTextureTarget, aTexture);
gl->fTexParameteri(aTextureTarget,
LOCAL_GL_TEXTURE_MIN_FILTER,
LOCAL_GL_LINEAR);
gl->fTexParameteri(aTextureTarget,
LOCAL_GL_TEXTURE_MAG_FILTER,
LOCAL_GL_LINEAR);
gl->fTexParameteri(aTextureTarget,
LOCAL_GL_TEXTURE_WRAP_S,
LOCAL_GL_CLAMP_TO_EDGE);
gl->fTexParameteri(aTextureTarget,
LOCAL_GL_TEXTURE_WRAP_T,
LOCAL_GL_CLAMP_TO_EDGE);
textureInited = false;
} else {
gl->fBindTexture(aTextureTarget, aTexture);
}
nsIntRegion paintRegion;
if (!textureInited) {
paintRegion = nsIntRegion(aDstRegion.GetBounds());
} else {
paintRegion = aDstRegion;
}
GLenum format;
GLenum internalFormat;
GLenum type;
int32_t pixelSize = gfxASurface::BytePerPixelFromFormat(aFormat);
SurfaceFormat surfaceFormat;
MOZ_ASSERT(gl->GetPreferredARGB32Format() == LOCAL_GL_BGRA ||
gl->GetPreferredARGB32Format() == LOCAL_GL_RGBA);
switch (aFormat) {
case gfxImageFormatARGB32:
if (gl->GetPreferredARGB32Format() == LOCAL_GL_BGRA) {
format = LOCAL_GL_BGRA;
surfaceFormat = gfx::FORMAT_R8G8B8A8;
type = LOCAL_GL_UNSIGNED_INT_8_8_8_8_REV;
} else {
format = LOCAL_GL_RGBA;
surfaceFormat = gfx::FORMAT_B8G8R8A8;
type = LOCAL_GL_UNSIGNED_BYTE;
}
internalFormat = LOCAL_GL_RGBA;
break;
case gfxImageFormatRGB24:
// Treat RGB24 surfaces as RGBA32 except for the surface
// format used.
if (gl->GetPreferredARGB32Format() == LOCAL_GL_BGRA) {
format = LOCAL_GL_BGRA;
surfaceFormat = gfx::FORMAT_R8G8B8X8;
type = LOCAL_GL_UNSIGNED_INT_8_8_8_8_REV;
} else {
format = LOCAL_GL_RGBA;
surfaceFormat = gfx::FORMAT_B8G8R8X8;
type = LOCAL_GL_UNSIGNED_BYTE;
}
internalFormat = LOCAL_GL_RGBA;
break;
case gfxImageFormatRGB16_565:
internalFormat = format = LOCAL_GL_RGB;
type = LOCAL_GL_UNSIGNED_SHORT_5_6_5;
surfaceFormat = gfx::FORMAT_R5G6B5;
break;
case gfxImageFormatA8:
internalFormat = format = LOCAL_GL_LUMINANCE;
type = LOCAL_GL_UNSIGNED_BYTE;
// We don't have a specific luminance shader
surfaceFormat = gfx::FORMAT_A8;
break;
default:
NS_ASSERTION(false, "Unhandled image surface format!");
format = 0;
type = 0;
surfaceFormat = gfx::FORMAT_UNKNOWN;
}
nsIntRegionRectIterator iter(paintRegion);
const nsIntRect *iterRect;
// Top left point of the region's bounding rectangle.
nsIntPoint topLeft = paintRegion.GetBounds().TopLeft();
while ((iterRect = iter.Next())) {
// The inital data pointer is at the top left point of the region's
// bounding rectangle. We need to find the offset of this rect
// within the region and adjust the data pointer accordingly.
unsigned char *rectData =
aData + DataOffset(iterRect->TopLeft() - topLeft, aStride, aFormat);
NS_ASSERTION(textureInited || (iterRect->x == 0 && iterRect->y == 0),
"Must be uploading to the origin when we don't have an existing texture");
if (textureInited && CanUploadSubTextures(gl)) {
TexSubImage2DHelper(gl,
aTextureTarget,
0,
iterRect->x,
iterRect->y,
iterRect->width,
iterRect->height,
aStride,
pixelSize,
format,
type,
rectData);
} else {
TexImage2DHelper(gl,
aTextureTarget,
0,
internalFormat,
iterRect->width,
iterRect->height,
aStride,
pixelSize,
0,
format,
type,
rectData);
}
}
return surfaceFormat;
}
void
ClientSingleTiledLayerBuffer::PaintThebes(const nsIntRegion& aNewValidRegion,
const nsIntRegion& aPaintRegion,
const nsIntRegion& aDirtyRegion,
LayerManager::DrawPaintedLayerCallback aCallback,
void* aCallbackData)
{
// Compare layer valid region size to current backbuffer size, discard if not matching.
gfx::IntSize size = aNewValidRegion.GetBounds().Size();
gfx::IntPoint origin = aNewValidRegion.GetBounds().TopLeft();
nsIntRegion paintRegion = aPaintRegion;
if (mSize != size ||
mTilingOrigin != origin) {
ResetPaintedAndValidState();
mSize = size;
mTilingOrigin = origin;
paintRegion = aNewValidRegion;
}
SurfaceMode mode;
gfxContentType content = GetContentType(&mode);
mFormat = gfxPlatform::GetPlatform()->OptimalFormatForContent(content);
if (mTile.IsPlaceholderTile()) {
mTile.SetLayerManager(mManager);
mTile.SetTextureAllocator(this);
}
mTile.SetCompositableClient(mCompositableClient);
// The dirty region relative to the top-left of the tile.
nsIntRegion tileDirtyRegion = paintRegion.MovedBy(-mTilingOrigin);
nsIntRegion extraPainted;
RefPtr<TextureClient> backBufferOnWhite;
RefPtr<TextureClient> backBuffer =
mTile.GetBackBuffer(tileDirtyRegion,
content, mode,
extraPainted,
&backBufferOnWhite);
mTile.mUpdateRect = tileDirtyRegion.GetBounds().Union(extraPainted.GetBounds());
extraPainted.MoveBy(mTilingOrigin);
extraPainted.And(extraPainted, aNewValidRegion);
mPaintedRegion.OrWith(paintRegion);
mPaintedRegion.OrWith(extraPainted);
if (!backBuffer) {
return;
}
RefPtr<gfx::DrawTarget> dt = backBuffer->BorrowDrawTarget();
RefPtr<gfx::DrawTarget> dtOnWhite;
if (backBufferOnWhite) {
dtOnWhite = backBufferOnWhite->BorrowDrawTarget();
}
if (mode != SurfaceMode::SURFACE_OPAQUE) {
for (auto iter = tileDirtyRegion.RectIter(); !iter.Done(); iter.Next()) {
const gfx::IntRect& rect = iter.Get();
if (dtOnWhite) {
dt->FillRect(gfx::Rect(rect.x, rect.y, rect.width, rect.height),
gfx::ColorPattern(gfx::Color(0.0, 0.0, 0.0, 1.0)));
dtOnWhite->FillRect(gfx::Rect(rect.x, rect.y, rect.width, rect.height),
gfx::ColorPattern(gfx::Color(1.0, 1.0, 1.0, 1.0)));
} else {
dt->ClearRect(gfx::Rect(rect.x, rect.y, rect.width, rect.height));
}
}
}
if (dtOnWhite) {
dt = gfx::Factory::CreateDualDrawTarget(dt, dtOnWhite);
dtOnWhite = nullptr;
}
{
RefPtr<gfxContext> ctx = new gfxContext(dt);
ctx->SetMatrix(ctx->CurrentMatrix().Translate(-mTilingOrigin.x, -mTilingOrigin.y));
aCallback(mPaintedLayer, ctx, paintRegion, paintRegion, DrawRegionClip::DRAW, nsIntRegion(), aCallbackData);
}
// Mark the area we just drew into the back buffer as invalid in the front buffer as they're
// now out of sync.
mTile.mInvalidFront.OrWith(tileDirtyRegion);
// The new buffer is now validated, remove the dirty region from it.
mTile.mInvalidBack.SubOut(tileDirtyRegion);
dt = nullptr;
mTile.Flip();
UnlockTile(mTile);
if (backBuffer->HasIntermediateBuffer()) {
// If our new buffer has an internal buffer, we don't want to keep another
// TextureClient around unnecessarily, so discard the back-buffer.
mTile.DiscardBackBuffer();
}
mValidRegion = aNewValidRegion;
mLastPaintSurfaceMode = mode;
mLastPaintContentType = content;
}
void ClientSingleTiledLayerBuffer::PaintThebes(
const nsIntRegion& aNewValidRegion, const nsIntRegion& aPaintRegion,
const nsIntRegion& aDirtyRegion,
LayerManager::DrawPaintedLayerCallback aCallback, void* aCallbackData,
TilePaintFlags aFlags) {
mWasLastPaintProgressive = !!(aFlags & TilePaintFlags::Progressive);
bool asyncPaint = !!(aFlags & TilePaintFlags::Async);
// Compare layer valid region size to current backbuffer size, discard if not
// matching.
gfx::IntSize size = aNewValidRegion.GetBounds().Size();
gfx::IntPoint origin = aNewValidRegion.GetBounds().TopLeft();
nsIntRegion paintRegion = aPaintRegion;
RefPtr<TextureClient> discardedFrontBuffer = nullptr;
RefPtr<TextureClient> discardedFrontBufferOnWhite = nullptr;
nsIntRegion discardedValidRegion;
if (mSize != size || mTilingOrigin != origin) {
discardedFrontBuffer = mTile.mFrontBuffer;
discardedFrontBufferOnWhite = mTile.mFrontBufferOnWhite;
discardedValidRegion = mValidRegion;
TILING_LOG(
"TILING %p: Single-tile valid region changed. Discarding buffers.\n",
&mPaintedLayer);
ResetPaintedAndValidState();
mSize = size;
mTilingOrigin = origin;
paintRegion = aNewValidRegion;
}
SurfaceMode mode;
gfxContentType content = GetContentType(&mode);
mFormat = gfxPlatform::GetPlatform()->OptimalFormatForContent(content);
if (mTile.IsPlaceholderTile()) {
mTile.SetTextureAllocator(this);
}
if (mManager->AsShadowForwarder()->SupportsTextureDirectMapping()) {
AutoTArray<uint64_t, 2> syncTextureSerials;
mTile.GetSyncTextureSerials(mode, syncTextureSerials);
if (syncTextureSerials.Length() > 0) {
mManager->AsShadowForwarder()->SyncTextures(syncTextureSerials);
}
}
// The dirty region relative to the top-left of the tile.
nsIntRegion tileVisibleRegion = aNewValidRegion.MovedBy(-mTilingOrigin);
nsIntRegion tileDirtyRegion = paintRegion.MovedBy(-mTilingOrigin);
Maybe<AcquiredBackBuffer> backBuffer =
mTile.AcquireBackBuffer(mCompositableClient, tileDirtyRegion,
tileVisibleRegion, content, mode, aFlags);
if (!backBuffer) {
return;
}
// Mark the area we need to paint in the back buffer as invalid in the
// front buffer as they will become out of sync.
mTile.mInvalidFront.OrWith(tileDirtyRegion);
// Add backbuffer's invalid region to the dirty region to be painted.
// This will be empty if we were able to copy from the front in to the back.
nsIntRegion tileInvalidRegion = mTile.mInvalidBack;
tileInvalidRegion.AndWith(tileVisibleRegion);
paintRegion.OrWith(tileInvalidRegion.MovedBy(mTilingOrigin));
tileDirtyRegion.OrWith(tileInvalidRegion);
// Mark the region we will be painting and the region we copied from the front
// buffer as needing to be uploaded to the compositor
mTile.mUpdateRect =
tileDirtyRegion.GetBounds().Union(backBuffer->mUpdatedRect);
// If the old frontbuffer was discarded then attempt to copy what we
// can from it to the new backbuffer.
if (discardedFrontBuffer) {
nsIntRegion copyableRegion;
copyableRegion.And(aNewValidRegion, discardedValidRegion);
copyableRegion.SubOut(aDirtyRegion);
OpenMode readMode =
asyncPaint ? OpenMode::OPEN_READ_ASYNC : OpenMode::OPEN_READ;
DualTextureClientAutoLock discardedBuffer(
discardedFrontBuffer, discardedFrontBufferOnWhite, readMode);
if (discardedBuffer.Succeeded()) {
RefPtr<gfx::SourceSurface> discardedSurface = discardedBuffer->Snapshot();
for (auto iter = copyableRegion.RectIter(); !iter.Done(); iter.Next()) {
const gfx::IntRect src =
iter.Get() - discardedValidRegion.GetBounds().TopLeft();
const gfx::IntPoint dest = iter.Get().TopLeft() - mTilingOrigin;
backBuffer->mTarget->CopySurface(discardedSurface, src, dest);
}
TILING_LOG("TILING %p: Region copied from discarded frontbuffer %s\n",
&mPaintedLayer, Stringify(copyableRegion).c_str());
// We don't need to repaint valid content that was just copied.
paintRegion.SubOut(copyableRegion);
copyableRegion.MoveBy(-mTilingOrigin);
tileDirtyRegion.SubOut(copyableRegion);
} else {
gfxWarning() << "[Tiling:Client] Failed to aquire the discarded front "
"buffer's draw target";
}
}
if (mode != SurfaceMode::SURFACE_OPAQUE) {
for (auto iter = tileDirtyRegion.RectIter(); !iter.Done(); iter.Next()) {
const gfx::Rect drawRect(iter.Get().X(), iter.Get().Y(),
iter.Get().Width(), iter.Get().Height());
backBuffer->mTarget->ClearRect(drawRect);
}
}
// Paint into the target
{
RefPtr<gfxContext> ctx = gfxContext::CreateOrNull(backBuffer->mTarget);
if (!ctx) {
gfxDevCrash(gfx::LogReason::InvalidContext)
<< "SingleTiledContextClient context problem "
<< gfx::hexa(backBuffer->mTarget);
return;
}
ctx->SetMatrix(
ctx->CurrentMatrix().PreTranslate(-mTilingOrigin.x, -mTilingOrigin.y));
aCallback(&mPaintedLayer, ctx, paintRegion, paintRegion,
DrawRegionClip::DRAW, nsIntRegion(), aCallbackData);
}
if (asyncPaint) {
if (!backBuffer->mCapture->IsEmpty()) {
UniquePtr<PaintTask> task(new PaintTask());
task->mCapture = backBuffer->mCapture;
task->mTarget = backBuffer->mBackBuffer;
task->mClients = std::move(backBuffer->mTextureClients);
if (discardedFrontBuffer) {
task->mClients.AppendElement(discardedFrontBuffer);
}
if (discardedFrontBufferOnWhite) {
task->mClients.AppendElement(discardedFrontBufferOnWhite);
}
// The target is an alias for the capture, and the paint thread expects
// to be the only one with a reference to the capture
backBuffer->mTarget = nullptr;
backBuffer->mCapture = nullptr;
PaintThread::Get()->QueuePaintTask(std::move(task));
mManager->SetQueuedAsyncPaints();
}
} else {
MOZ_ASSERT(backBuffer->mTarget == backBuffer->mBackBuffer);
MOZ_ASSERT(!backBuffer->mCapture);
}
// The new buffer is now validated, remove the dirty region from it.
mTile.mInvalidBack.SubOut(tileDirtyRegion);
backBuffer = Nothing();
mTile.Flip();
UnlockTile(mTile);
mValidRegion = aNewValidRegion;
mLastPaintSurfaceMode = mode;
mLastPaintContentType = content;
}
bool
HwcComposer2D::PrepareLayerList(Layer* aLayer,
const nsIntRect& aClip,
const Matrix& aParentTransform,
bool aFindSidebandStreams)
{
// NB: we fall off this path whenever there are container layers
// that require intermediate surfaces. That means all the
// GetEffective*() coordinates are relative to the framebuffer.
bool fillColor = false;
const nsIntRegion visibleRegion = aLayer->GetLocalVisibleRegion().ToUnknownRegion();
if (visibleRegion.IsEmpty()) {
return true;
}
uint8_t opacity = std::min(0xFF, (int)(aLayer->GetEffectiveOpacity() * 256.0));
if (opacity == 0) {
LOGD("%s Layer has zero opacity; skipping", aLayer->Name());
return true;
}
if (!mHal->SupportTransparency() && opacity < 0xFF && !aFindSidebandStreams) {
LOGD("%s Layer has planar semitransparency which is unsupported by hwcomposer", aLayer->Name());
return false;
}
if (aLayer->GetMaskLayer() && !aFindSidebandStreams) {
LOGD("%s Layer has MaskLayer which is unsupported by hwcomposer", aLayer->Name());
return false;
}
nsIntRect clip;
nsIntRect layerClip = aLayer->GetLocalClipRect().valueOr(ParentLayerIntRect()).ToUnknownRect();
nsIntRect* layerClipPtr = aLayer->GetLocalClipRect() ? &layerClip : nullptr;
if (!HwcUtils::CalculateClipRect(aParentTransform,
layerClipPtr,
aClip,
&clip))
{
LOGD("%s Clip rect is empty. Skip layer", aLayer->Name());
return true;
}
// HWC supports only the following 2D transformations:
//
// Scaling via the sourceCrop and displayFrame in HwcLayer
// Translation via the sourceCrop and displayFrame in HwcLayer
// Rotation (in square angles only) via the HWC_TRANSFORM_ROT_* flags
// Reflection (horizontal and vertical) via the HWC_TRANSFORM_FLIP_* flags
//
// A 2D transform with PreservesAxisAlignedRectangles() has all the attributes
// above
Matrix layerTransform;
if (!aLayer->GetEffectiveTransform().Is2D(&layerTransform) ||
!layerTransform.PreservesAxisAlignedRectangles()) {
LOGD("Layer EffectiveTransform has a 3D transform or a non-square angle rotation");
return false;
}
Matrix layerBufferTransform;
if (!aLayer->GetEffectiveTransformForBuffer().Is2D(&layerBufferTransform) ||
!layerBufferTransform.PreservesAxisAlignedRectangles()) {
LOGD("Layer EffectiveTransformForBuffer has a 3D transform or a non-square angle rotation");
return false;
}
if (ContainerLayer* container = aLayer->AsContainerLayer()) {
if (container->UseIntermediateSurface() && !aFindSidebandStreams) {
LOGD("Container layer needs intermediate surface");
return false;
}
AutoTArray<Layer*, 12> children;
container->SortChildrenBy3DZOrder(children);
for (uint32_t i = 0; i < children.Length(); i++) {
if (!PrepareLayerList(children[i], clip, layerTransform, aFindSidebandStreams) &&
!aFindSidebandStreams) {
return false;
}
}
return true;
}
LayerRenderState state = aLayer->GetRenderState();
#if ANDROID_VERSION >= 21
if (!state.GetGrallocBuffer() && !state.GetSidebandStream().IsValid()) {
#else
if (!state.GetGrallocBuffer()) {
#endif
if (aLayer->AsColorLayer() && mColorFill) {
fillColor = true;
} else {
LOGD("%s Layer doesn't have a gralloc buffer", aLayer->Name());
return false;
}
}
nsIntRect visibleRect = visibleRegion.GetBounds();
nsIntRect bufferRect;
if (fillColor) {
bufferRect = nsIntRect(visibleRect);
} else {
nsIntRect layerRect;
if (state.mHasOwnOffset) {
bufferRect = nsIntRect(state.mOffset.x, state.mOffset.y,
state.mSize.width, state.mSize.height);
layerRect = bufferRect;
} else {
//Since the buffer doesn't have its own offset, assign the whole
//surface size as its buffer bounds
bufferRect = nsIntRect(0, 0, state.mSize.width, state.mSize.height);
layerRect = bufferRect;
if (aLayer->GetType() == Layer::TYPE_IMAGE) {
ImageLayer* imageLayer = static_cast<ImageLayer*>(aLayer);
if(imageLayer->GetScaleMode() != ScaleMode::SCALE_NONE) {
layerRect = nsIntRect(0, 0, imageLayer->GetScaleToSize().width, imageLayer->GetScaleToSize().height);
}
}
}
// In some cases the visible rect assigned to the layer can be larger
// than the layer's surface, e.g., an ImageLayer with a small Image
// in it.
visibleRect.IntersectRect(visibleRect, layerRect);
}
// Buffer rotation is not to be confused with the angled rotation done by a transform matrix
// It's a fancy PaintedLayer feature used for scrolling
if (state.BufferRotated()) {
LOGD("%s Layer has a rotated buffer", aLayer->Name());
return false;
}
const bool needsYFlip = state.OriginBottomLeft() ? true
: false;
hwc_rect_t sourceCrop, displayFrame;
if(!HwcUtils::PrepareLayerRects(visibleRect,
layerTransform,
layerBufferTransform,
clip,
bufferRect,
needsYFlip,
&(sourceCrop),
&(displayFrame)))
{
return true;
}
// OK! We can compose this layer with hwc.
int current = mList ? mList->numHwLayers : 0;
// Do not compose any layer below full-screen Opaque layer
// Note: It can be generalized to non-fullscreen Opaque layers.
bool isOpaque = opacity == 0xFF &&
(state.mFlags & LayerRenderStateFlags::OPAQUE);
// Currently we perform opacity calculation using the *bounds* of the layer.
// We can only make this assumption if we're not dealing with a complex visible region.
bool isSimpleVisibleRegion = visibleRegion.Contains(visibleRect);
if (current && isOpaque && isSimpleVisibleRegion) {
nsIntRect displayRect = nsIntRect(displayFrame.left, displayFrame.top,
displayFrame.right - displayFrame.left, displayFrame.bottom - displayFrame.top);
if (displayRect.Contains(mScreenRect)) {
// In z-order, all previous layers are below
// the current layer. We can ignore them now.
mList->numHwLayers = current = 0;
mHwcLayerMap.Clear();
}
}
if (!mList || current >= mMaxLayerCount) {
if (!ReallocLayerList() || current >= mMaxLayerCount) {
LOGE("PrepareLayerList failed! Could not increase the maximum layer count");
return false;
}
}
HwcLayer& hwcLayer = mList->hwLayers[current];
hwcLayer.displayFrame = displayFrame;
mHal->SetCrop(hwcLayer, sourceCrop);
buffer_handle_t handle = nullptr;
#if ANDROID_VERSION >= 21
if (state.GetSidebandStream().IsValid()) {
handle = state.GetSidebandStream().GetRawNativeHandle();
} else if (state.GetGrallocBuffer()) {
handle = state.GetGrallocBuffer()->getNativeBuffer()->handle;
}
#else
if (state.GetGrallocBuffer()) {
handle = state.GetGrallocBuffer()->getNativeBuffer()->handle;
}
#endif
hwcLayer.handle = handle;
hwcLayer.flags = 0;
hwcLayer.hints = 0;
hwcLayer.blending = isOpaque ? HWC_BLENDING_NONE : HWC_BLENDING_PREMULT;
#if ANDROID_VERSION >= 17
hwcLayer.compositionType = HWC_FRAMEBUFFER;
#if ANDROID_VERSION >= 21
if (state.GetSidebandStream().IsValid()) {
hwcLayer.compositionType = HWC_SIDEBAND;
}
#endif
hwcLayer.acquireFenceFd = -1;
hwcLayer.releaseFenceFd = -1;
#if ANDROID_VERSION >= 18
hwcLayer.planeAlpha = opacity;
#endif
#else
hwcLayer.compositionType = HwcUtils::HWC_USE_COPYBIT;
#endif
if (!fillColor) {
if (state.FormatRBSwapped()) {
if (!mRBSwapSupport) {
LOGD("No R/B swap support in H/W Composer");
return false;
}
hwcLayer.flags |= HwcUtils::HWC_FORMAT_RB_SWAP;
}
// Translation and scaling have been addressed in PrepareLayerRects().
// Given the above and that we checked for PreservesAxisAlignedRectangles()
// the only possible transformations left to address are
// square angle rotation and horizontal/vertical reflection.
//
// The rotation and reflection permutations total 16 but can be
// reduced to 8 transformations after eliminating redundancies.
//
// All matrices represented here are in the form
//
// | xx xy |
// | yx yy |
//
// And ignore scaling.
//
// Reflection is applied before rotation
gfx::Matrix rotation = layerTransform;
// Compute fuzzy zero like PreservesAxisAlignedRectangles()
if (fabs(rotation._11) < 1e-6) {
if (rotation._21 < 0) {
if (rotation._12 > 0) {
// 90 degree rotation
//
// | 0 -1 |
// | 1 0 |
//
hwcLayer.transform = HWC_TRANSFORM_ROT_90;
LOGD("Layer rotated 90 degrees");
}
else {
// Horizontal reflection then 90 degree rotation
//
// | 0 -1 | | -1 0 | = | 0 -1 |
// | 1 0 | | 0 1 | | -1 0 |
//
// same as vertical reflection then 270 degree rotation
//
// | 0 1 | | 1 0 | = | 0 -1 |
// | -1 0 | | 0 -1 | | -1 0 |
//
hwcLayer.transform = HWC_TRANSFORM_ROT_90 | HWC_TRANSFORM_FLIP_H;
LOGD("Layer vertically reflected then rotated 270 degrees");
}
} else {
if (rotation._12 < 0) {
// 270 degree rotation
//
// | 0 1 |
// | -1 0 |
//
hwcLayer.transform = HWC_TRANSFORM_ROT_270;
LOGD("Layer rotated 270 degrees");
}
else {
// Vertical reflection then 90 degree rotation
//
// | 0 1 | | -1 0 | = | 0 1 |
// | -1 0 | | 0 1 | | 1 0 |
//
// Same as horizontal reflection then 270 degree rotation
//
// | 0 -1 | | 1 0 | = | 0 1 |
// | 1 0 | | 0 -1 | | 1 0 |
//
hwcLayer.transform = HWC_TRANSFORM_ROT_90 | HWC_TRANSFORM_FLIP_V;
LOGD("Layer horizontally reflected then rotated 270 degrees");
}
}
} else if (rotation._11 < 0) {
if (rotation._22 > 0) {
// Horizontal reflection
//
// | -1 0 |
// | 0 1 |
//
hwcLayer.transform = HWC_TRANSFORM_FLIP_H;
LOGD("Layer rotated 180 degrees");
}
else {
// 180 degree rotation
//
// | -1 0 |
// | 0 -1 |
//
// Same as horizontal and vertical reflection
//
// | -1 0 | | 1 0 | = | -1 0 |
// | 0 1 | | 0 -1 | | 0 -1 |
//
hwcLayer.transform = HWC_TRANSFORM_ROT_180;
LOGD("Layer rotated 180 degrees");
}
} else {
if (rotation._22 < 0) {
// Vertical reflection
//
// | 1 0 |
// | 0 -1 |
//
hwcLayer.transform = HWC_TRANSFORM_FLIP_V;
LOGD("Layer rotated 180 degrees");
}
else {
// No rotation or reflection
//
// | 1 0 |
// | 0 1 |
//
hwcLayer.transform = 0;
}
}
const bool needsYFlip = state.OriginBottomLeft() ? true
: false;
if (needsYFlip) {
// Invert vertical reflection flag if it was already set
hwcLayer.transform ^= HWC_TRANSFORM_FLIP_V;
}
hwc_region_t region;
if (visibleRegion.GetNumRects() > 1) {
mVisibleRegions.push_back(HwcUtils::RectVector());
HwcUtils::RectVector* visibleRects = &(mVisibleRegions.back());
bool isVisible = false;
if(!HwcUtils::PrepareVisibleRegion(visibleRegion,
layerTransform,
layerBufferTransform,
clip,
bufferRect,
visibleRects,
isVisible)) {
LOGD("A region of layer is too small to be rendered by HWC");
return false;
}
if (!isVisible) {
// Layer is not visible, no need to render it
return true;
}
region.numRects = visibleRects->size();
region.rects = &((*visibleRects)[0]);
} else {
region.numRects = 1;
region.rects = &(hwcLayer.displayFrame);
}
hwcLayer.visibleRegionScreen = region;
} else {
hwcLayer.flags |= HwcUtils::HWC_COLOR_FILL;
ColorLayer* colorLayer = aLayer->AsColorLayer();
if (colorLayer->GetColor().a < 1.0) {
LOGD("Color layer has semitransparency which is unsupported");
return false;
}
hwcLayer.transform = colorLayer->GetColor().ToABGR();
}
#if ANDROID_VERSION >= 21
if (aFindSidebandStreams && hwcLayer.compositionType == HWC_SIDEBAND) {
mCachedSidebandLayers.AppendElement(hwcLayer);
}
#endif
mHwcLayerMap.AppendElement(static_cast<LayerComposite*>(aLayer->ImplData()));
mList->numHwLayers++;
return true;
}
#if ANDROID_VERSION >= 17
bool
HwcComposer2D::TryHwComposition(nsScreenGonk* aScreen)
{
DisplaySurface* dispSurface = aScreen->GetDisplaySurface();
if (!(dispSurface && dispSurface->lastHandle)) {
LOGD("H/W Composition failed. DispSurface not initialized.");
return false;
}
// Add FB layer
int idx = mList->numHwLayers++;
if (idx >= mMaxLayerCount) {
if (!ReallocLayerList() || idx >= mMaxLayerCount) {
LOGE("TryHwComposition failed! Could not add FB layer");
return false;
}
}
Prepare(dispSurface->lastHandle, -1, aScreen);
/* Possible composition paths, after hwc prepare:
1. GPU Composition
2. BLIT Composition
3. Full OVERLAY Composition
4. Partial OVERLAY Composition (GPU + OVERLAY) */
bool gpuComposite = false;
bool blitComposite = false;
bool overlayComposite = true;
for (int j=0; j < idx; j++) {
if (mList->hwLayers[j].compositionType == HWC_FRAMEBUFFER ||
mList->hwLayers[j].compositionType == HWC_BLIT) {
// Full OVERLAY composition is not possible on this frame
// It is either GPU / BLIT / partial OVERLAY composition.
overlayComposite = false;
break;
}
}
if (!overlayComposite) {
for (int k=0; k < idx; k++) {
switch (mList->hwLayers[k].compositionType) {
case HWC_FRAMEBUFFER:
gpuComposite = true;
break;
case HWC_BLIT:
blitComposite = true;
break;
#if ANDROID_VERSION >= 21
case HWC_SIDEBAND:
#endif
case HWC_OVERLAY: {
// HWC will compose HWC_OVERLAY layers in partial
// Overlay Composition, set layer composition flag
// on mapped LayerComposite to skip GPU composition
mHwcLayerMap[k]->SetLayerComposited(true);
uint8_t opacity = std::min(0xFF, (int)(mHwcLayerMap[k]->GetLayer()->GetEffectiveOpacity() * 256.0));
if ((mList->hwLayers[k].hints & HWC_HINT_CLEAR_FB) &&
(opacity == 0xFF)) {
// Clear visible rect on FB with transparent pixels.
hwc_rect_t r = mList->hwLayers[k].displayFrame;
mHwcLayerMap[k]->SetClearRect(nsIntRect(r.left, r.top,
r.right - r.left,
r.bottom - r.top));
}
break;
}
default:
break;
}
}
if (gpuComposite) {
// GPU or partial OVERLAY Composition
return false;
} else if (blitComposite) {
// BLIT Composition, flip DispSurface target
GetGonkDisplay()->UpdateDispSurface(aScreen->GetEGLDisplay(), aScreen->GetEGLSurface());
DisplaySurface* dispSurface = aScreen->GetDisplaySurface();
if (!dispSurface) {
LOGE("H/W Composition failed. NULL DispSurface.");
return false;
}
mList->hwLayers[idx].handle = dispSurface->lastHandle;
mList->hwLayers[idx].acquireFenceFd = dispSurface->GetPrevDispAcquireFd();
}
}
// BLIT or full OVERLAY Composition
return Commit(aScreen);
}
void
ThebesLayerD3D9::DrawRegion(const nsIntRegion &aRegion)
{
HRESULT hr;
nsIntRect visibleRect = mVisibleRegion.GetBounds();
nsRefPtr<gfxContext> context;
#ifdef CAIRO_HAS_D2D_SURFACE
if (mD2DSurface) {
context = new gfxContext(mD2DSurface);
nsIntRegionRectIterator iter(aRegion);
context->Translate(gfxPoint(-visibleRect.x, -visibleRect.y));
context->NewPath();
const nsIntRect *iterRect;
while ((iterRect = iter.Next())) {
context->Rectangle(gfxRect(iterRect->x, iterRect->y, iterRect->width, iterRect->height));
}
context->Clip();
if (mD2DSurface->GetContentType() != gfxASurface::CONTENT_COLOR) {
context->SetOperator(gfxContext::OPERATOR_CLEAR);
context->Paint();
context->SetOperator(gfxContext::OPERATOR_OVER);
}
LayerManagerD3D9::CallbackInfo cbInfo = mD3DManager->GetCallbackInfo();
cbInfo.Callback(this, context, aRegion, nsIntRegion(), cbInfo.CallbackData);
mD2DSurface->Flush();
// XXX - This call is quite expensive, we may want to consider doing our
// drawing in a seperate 'validation' iteration. And then flushing once for
// all the D2D surfaces we might have drawn, before doing our D3D9 rendering
// loop.
cairo_d2d_finish_device(gfxWindowsPlatform::GetPlatform()->GetD2DDevice());
return;
}
#endif
D3DFORMAT fmt = UseOpaqueSurface(this) ? D3DFMT_X8R8G8B8 : D3DFMT_A8R8G8B8;
nsIntRect bounds = aRegion.GetBounds();
gfxASurface::gfxImageFormat imageFormat = gfxASurface::ImageFormatARGB32;
nsRefPtr<gfxASurface> destinationSurface;
nsRefPtr<IDirect3DTexture9> tmpTexture;
device()->CreateTexture(bounds.width, bounds.height, 1,
0, fmt,
D3DPOOL_SYSTEMMEM, getter_AddRefs(tmpTexture), NULL);
nsRefPtr<IDirect3DSurface9> surf;
HDC dc;
if (UseOpaqueSurface(this)) {
hr = tmpTexture->GetSurfaceLevel(0, getter_AddRefs(surf));
if (FAILED(hr)) {
// Uh-oh, bail.
NS_WARNING("Failed to get texture surface level.");
return;
}
hr = surf->GetDC(&dc);
if (FAILED(hr)) {
NS_WARNING("Failed to get device context for texture surface.");
return;
}
destinationSurface = new gfxWindowsSurface(dc);
} else {
// XXX - We may consider retaining a SYSTEMMEM texture texture the size
// of our DEFAULT texture and then use UpdateTexture and add dirty rects
// to update in a single call.
destinationSurface =
gfxPlatform::GetPlatform()->
CreateOffscreenSurface(gfxIntSize(bounds.width,
bounds.height),
imageFormat);
}
context = new gfxContext(destinationSurface);
context->Translate(gfxPoint(-bounds.x, -bounds.y));
LayerManagerD3D9::CallbackInfo cbInfo = mD3DManager->GetCallbackInfo();
cbInfo.Callback(this, context, aRegion, nsIntRegion(), cbInfo.CallbackData);
if (UseOpaqueSurface(this)) {
surf->ReleaseDC(dc);
} else {
D3DLOCKED_RECT r;
tmpTexture->LockRect(0, &r, NULL, 0);
nsRefPtr<gfxImageSurface> imgSurface =
new gfxImageSurface((unsigned char *)r.pBits,
gfxIntSize(bounds.width,
bounds.height),
r.Pitch,
imageFormat);
context = new gfxContext(imgSurface);
context->SetSource(destinationSurface);
context->SetOperator(gfxContext::OPERATOR_SOURCE);
context->Paint();
imgSurface = NULL;
tmpTexture->UnlockRect(0);
}
nsRefPtr<IDirect3DSurface9> srcSurface;
nsRefPtr<IDirect3DSurface9> dstSurface;
mTexture->GetSurfaceLevel(0, getter_AddRefs(dstSurface));
tmpTexture->GetSurfaceLevel(0, getter_AddRefs(srcSurface));
nsIntRegionRectIterator iter(aRegion);
const nsIntRect *iterRect;
while ((iterRect = iter.Next())) {
RECT rect;
rect.left = iterRect->x - bounds.x;
rect.top = iterRect->y - bounds.y;
rect.right = rect.left + iterRect->width;
rect.bottom = rect.top + iterRect->height;
POINT point;
point.x = iterRect->x - visibleRect.x;
point.y = iterRect->y - visibleRect.y;
device()->UpdateSurface(srcSurface, &rect, dstSurface, &point);
}
}
void
ThebesLayerD3D9::DrawRegion(nsIntRegion &aRegion, SurfaceMode aMode,
const nsTArray<ReadbackProcessor::Update>& aReadbackUpdates)
{
HRESULT hr;
nsIntRect visibleRect = mVisibleRegion.GetBounds();
nsRefPtr<gfxASurface> destinationSurface;
nsIntRect bounds = aRegion.GetBounds();
nsRefPtr<IDirect3DTexture9> tmpTexture;
OpaqueRenderer opaqueRenderer(aRegion);
OpaqueRenderer opaqueRendererOnWhite(aRegion);
switch (aMode)
{
case SurfaceMode::SURFACE_OPAQUE:
destinationSurface = opaqueRenderer.Begin(this);
break;
case SurfaceMode::SURFACE_SINGLE_CHANNEL_ALPHA: {
hr = device()->CreateTexture(bounds.width, bounds.height, 1,
0, D3DFMT_A8R8G8B8,
D3DPOOL_SYSTEMMEM, getter_AddRefs(tmpTexture), nullptr);
if (FAILED(hr)) {
ReportFailure(NS_LITERAL_CSTRING("Failed to create temporary texture in system memory."), hr);
return;
}
// XXX - We may consider retaining a SYSTEMMEM texture texture the size
// of our DEFAULT texture and then use UpdateTexture and add dirty rects
// to update in a single call.
nsRefPtr<gfxWindowsSurface> dest = new gfxWindowsSurface(
gfxIntSize(bounds.width, bounds.height), gfxImageFormat::ARGB32);
// If the contents of this layer don't require component alpha in the
// end of rendering, it's safe to enable Cleartype since all the Cleartype
// glyphs must be over (or under) opaque pixels.
dest->SetSubpixelAntialiasingEnabled(!(mContentFlags & CONTENT_COMPONENT_ALPHA));
destinationSurface = dest.forget();
break;
}
case SurfaceMode::SURFACE_COMPONENT_ALPHA: {
nsRefPtr<gfxWindowsSurface> onBlack = opaqueRenderer.Begin(this);
nsRefPtr<gfxWindowsSurface> onWhite = opaqueRendererOnWhite.Begin(this);
if (onBlack && onWhite) {
FillSurface(onBlack, aRegion, bounds.TopLeft(), gfxRGBA(0.0, 0.0, 0.0, 1.0));
FillSurface(onWhite, aRegion, bounds.TopLeft(), gfxRGBA(1.0, 1.0, 1.0, 1.0));
gfxASurface* surfaces[2] = { onBlack.get(), onWhite.get() };
destinationSurface = new gfxTeeSurface(surfaces, ArrayLength(surfaces));
// Using this surface as a source will likely go horribly wrong, since
// only the onBlack surface will really be used, so alpha information will
// be incorrect.
destinationSurface->SetAllowUseAsSource(false);
}
break;
}
}
if (!destinationSurface)
return;
nsRefPtr<gfxContext> context;
if (gfxPlatform::GetPlatform()->SupportsAzureContentForType(BackendType::CAIRO)) {
RefPtr<DrawTarget> dt =
gfxPlatform::GetPlatform()->CreateDrawTargetForSurface(destinationSurface,
IntSize(destinationSurface->GetSize().width,
destinationSurface->GetSize().height));
context = new gfxContext(dt);
} else {
context = new gfxContext(destinationSurface);
}
context->Translate(gfxPoint(-bounds.x, -bounds.y));
LayerManagerD3D9::CallbackInfo cbInfo = mD3DManager->GetCallbackInfo();
cbInfo.Callback(this, context, aRegion, DrawRegionClip::CLIP_NONE, nsIntRegion(), cbInfo.CallbackData);
for (uint32_t i = 0; i < aReadbackUpdates.Length(); ++i) {
NS_ASSERTION(aMode == SurfaceMode::SURFACE_OPAQUE,
"Transparent surfaces should not be used for readback");
const ReadbackProcessor::Update& update = aReadbackUpdates[i];
nsIntPoint offset = update.mLayer->GetBackgroundLayerOffset();
nsRefPtr<gfxContext> ctx =
update.mLayer->GetSink()->BeginUpdate(update.mUpdateRect + offset,
update.mSequenceCounter);
if (ctx) {
ctx->Translate(gfxPoint(offset.x, offset.y));
ctx->SetSource(destinationSurface, gfxPoint(bounds.x, bounds.y));
ctx->Paint();
update.mLayer->GetSink()->EndUpdate(ctx, update.mUpdateRect + offset);
}
}
// Release the cairo d3d9 surface before we try to composite it
context = nullptr;
nsAutoTArray<IDirect3DTexture9*,2> srcTextures;
nsAutoTArray<IDirect3DTexture9*,2> destTextures;
switch (aMode)
{
case SurfaceMode::SURFACE_OPAQUE:
// Must release reference to dest surface before ending drawing
destinationSurface = nullptr;
opaqueRenderer.End();
srcTextures.AppendElement(opaqueRenderer.GetTexture());
destTextures.AppendElement(mTexture);
break;
case SurfaceMode::SURFACE_SINGLE_CHANNEL_ALPHA: {
LockTextureRectD3D9 textureLock(tmpTexture);
if (!textureLock.HasLock()) {
NS_WARNING("Failed to lock ThebesLayer tmpTexture texture.");
return;
}
D3DLOCKED_RECT r = textureLock.GetLockRect();
nsRefPtr<gfxImageSurface> imgSurface =
new gfxImageSurface((unsigned char *)r.pBits,
bounds.Size(),
r.Pitch,
gfxImageFormat::ARGB32);
if (destinationSurface) {
nsRefPtr<gfxContext> context = new gfxContext(imgSurface);
context->SetSource(destinationSurface);
context->SetOperator(gfxContext::OPERATOR_SOURCE);
context->Paint();
}
// Must release reference to dest surface before ending drawing
destinationSurface = nullptr;
imgSurface = nullptr;
srcTextures.AppendElement(tmpTexture);
destTextures.AppendElement(mTexture);
break;
}
case SurfaceMode::SURFACE_COMPONENT_ALPHA: {
// Must release reference to dest surface before ending drawing
destinationSurface = nullptr;
opaqueRenderer.End();
opaqueRendererOnWhite.End();
srcTextures.AppendElement(opaqueRenderer.GetTexture());
destTextures.AppendElement(mTexture);
srcTextures.AppendElement(opaqueRendererOnWhite.GetTexture());
destTextures.AppendElement(mTextureOnWhite);
break;
}
}
NS_ASSERTION(srcTextures.Length() == destTextures.Length(), "Mismatched lengths");
// Copy to the texture.
for (uint32_t i = 0; i < srcTextures.Length(); ++i) {
nsRefPtr<IDirect3DSurface9> srcSurface;
nsRefPtr<IDirect3DSurface9> dstSurface;
destTextures[i]->GetSurfaceLevel(0, getter_AddRefs(dstSurface));
srcTextures[i]->GetSurfaceLevel(0, getter_AddRefs(srcSurface));
nsIntRegionRectIterator iter(aRegion);
const nsIntRect *iterRect;
while ((iterRect = iter.Next())) {
RECT rect;
rect.left = iterRect->x - bounds.x;
rect.top = iterRect->y - bounds.y;
rect.right = iterRect->XMost() - bounds.x;
rect.bottom = iterRect->YMost() - bounds.y;
POINT point;
point.x = iterRect->x - visibleRect.x;
point.y = iterRect->y - visibleRect.y;
device()->UpdateSurface(srcSurface, &rect, dstSurface, &point);
}
}
}
bool
ClientTiledLayerBuffer::ComputeProgressiveUpdateRegion(const nsIntRegion& aInvalidRegion,
const nsIntRegion& aOldValidRegion,
nsIntRegion& aRegionToPaint,
BasicTiledLayerPaintData* aPaintData,
bool aIsRepeated)
{
aRegionToPaint = aInvalidRegion;
// If the composition bounds rect is empty, we can't make any sensible
// decision about how to update coherently. In this case, just update
// everything in one transaction.
if (aPaintData->mCompositionBounds.IsEmpty()) {
aPaintData->mPaintFinished = true;
return false;
}
// If this is a low precision buffer, we force progressive updates. The
// assumption is that the contents is less important, so visual coherency
// is lower priority than speed.
bool drawingLowPrecision = IsLowPrecision();
// Find out if we have any non-stale content to update.
nsIntRegion staleRegion;
staleRegion.And(aInvalidRegion, aOldValidRegion);
// Find out the current view transform to determine which tiles to draw
// first, and see if we should just abort this paint. Aborting is usually
// caused by there being an incoming, more relevant paint.
ParentLayerRect compositionBounds;
CSSToParentLayerScale zoom;
#if defined(MOZ_WIDGET_ANDROID)
bool abortPaint = mManager->ProgressiveUpdateCallback(!staleRegion.Contains(aInvalidRegion),
compositionBounds, zoom,
!drawingLowPrecision);
#else
MOZ_ASSERT(mSharedFrameMetricsHelper);
ContainerLayer* parent = mThebesLayer->AsLayer()->GetParent();
bool abortPaint =
mSharedFrameMetricsHelper->UpdateFromCompositorFrameMetrics(
parent,
!staleRegion.Contains(aInvalidRegion),
drawingLowPrecision,
compositionBounds,
zoom);
#endif
if (abortPaint) {
// We ignore if front-end wants to abort if this is the first,
// non-low-precision paint, as in that situation, we're about to override
// front-end's page/viewport metrics.
if (!aPaintData->mFirstPaint || drawingLowPrecision) {
PROFILER_LABEL("ContentClient", "Abort painting");
aRegionToPaint.SetEmpty();
return aIsRepeated;
}
}
// Transform the screen coordinates into transformed layout device coordinates.
LayoutDeviceRect transformedCompositionBounds =
TransformCompositionBounds(compositionBounds, zoom, aPaintData->mScrollOffset,
aPaintData->mResolution, aPaintData->mTransformParentLayerToLayout);
// Paint tiles that have stale content or that intersected with the screen
// at the time of issuing the draw command in a single transaction first.
// This is to avoid rendering glitches on animated page content, and when
// layers change size/shape.
LayoutDeviceRect coherentUpdateRect =
transformedCompositionBounds.Intersect(aPaintData->mCompositionBounds);
nsIntRect roundedCoherentUpdateRect =
LayoutDeviceIntRect::ToUntyped(RoundedOut(coherentUpdateRect));
aRegionToPaint.And(aInvalidRegion, roundedCoherentUpdateRect);
aRegionToPaint.Or(aRegionToPaint, staleRegion);
bool drawingStale = !aRegionToPaint.IsEmpty();
if (!drawingStale) {
aRegionToPaint = aInvalidRegion;
}
// Prioritise tiles that are currently visible on the screen.
bool paintVisible = false;
if (aRegionToPaint.Intersects(roundedCoherentUpdateRect)) {
aRegionToPaint.And(aRegionToPaint, roundedCoherentUpdateRect);
paintVisible = true;
}
// Paint area that's visible and overlaps previously valid content to avoid
// visible glitches in animated elements, such as gifs.
bool paintInSingleTransaction = paintVisible && (drawingStale || aPaintData->mFirstPaint);
// The following code decides what order to draw tiles in, based on the
// current scroll direction of the primary scrollable layer.
NS_ASSERTION(!aRegionToPaint.IsEmpty(), "Unexpectedly empty paint region!");
nsIntRect paintBounds = aRegionToPaint.GetBounds();
int startX, incX, startY, incY;
int tileLength = GetScaledTileLength();
if (aPaintData->mScrollOffset.x >= aPaintData->mLastScrollOffset.x) {
startX = RoundDownToTileEdge(paintBounds.x);
incX = tileLength;
} else {
startX = RoundDownToTileEdge(paintBounds.XMost() - 1);
incX = -tileLength;
}
if (aPaintData->mScrollOffset.y >= aPaintData->mLastScrollOffset.y) {
startY = RoundDownToTileEdge(paintBounds.y);
incY = tileLength;
} else {
startY = RoundDownToTileEdge(paintBounds.YMost() - 1);
incY = -tileLength;
}
// Find a tile to draw.
nsIntRect tileBounds(startX, startY, tileLength, tileLength);
int32_t scrollDiffX = aPaintData->mScrollOffset.x - aPaintData->mLastScrollOffset.x;
int32_t scrollDiffY = aPaintData->mScrollOffset.y - aPaintData->mLastScrollOffset.y;
// This loop will always terminate, as there is at least one tile area
// along the first/last row/column intersecting with regionToPaint, or its
// bounds would have been smaller.
while (true) {
aRegionToPaint.And(aInvalidRegion, tileBounds);
if (!aRegionToPaint.IsEmpty()) {
break;
}
if (Abs(scrollDiffY) >= Abs(scrollDiffX)) {
tileBounds.x += incX;
} else {
tileBounds.y += incY;
}
}
if (!aRegionToPaint.Contains(aInvalidRegion)) {
// The region needed to paint is larger then our progressive chunk size
// therefore update what we want to paint and ask for a new paint transaction.
// If we need to draw more than one tile to maintain coherency, make
// sure it happens in the same transaction by requesting this work be
// repeated immediately.
// If this is unnecessary, the remaining work will be done tile-by-tile in
// subsequent transactions.
if (!drawingLowPrecision && paintInSingleTransaction) {
return true;
}
mManager->SetRepeatTransaction();
return false;
}
// We're not repeating painting and we've not requested a repeat transaction,
// so the paint is finished. If there's still a separate low precision
// paint to do, it will get marked as unfinished later.
aPaintData->mPaintFinished = true;
return false;
}