// ContainerRender is shared between RefLayer and ContainerLayer
template<class ContainerT> void
ContainerRender(ContainerT* aContainer,
LayerManagerComposite* aManager,
const nsIntRect& aClipRect)
{
/**
* Setup our temporary surface for rendering the contents of this container.
*/
RefPtr<CompositingRenderTarget> surface;
Compositor* compositor = aManager->GetCompositor();
RefPtr<CompositingRenderTarget> previousTarget = compositor->GetCurrentRenderTarget();
nsIntRect visibleRect = aContainer->GetEffectiveVisibleRegion().GetBounds();
float opacity = aContainer->GetEffectiveOpacity();
bool needsSurface = aContainer->UseIntermediateSurface();
bool surfaceCopyNeeded;
aContainer->DefaultComputeSupportsComponentAlphaChildren(&surfaceCopyNeeded);
if (needsSurface) {
SurfaceInitMode mode = INIT_MODE_CLEAR;
gfx::IntRect surfaceRect = gfx::IntRect(visibleRect.x, visibleRect.y,
visibleRect.width, visibleRect.height);
// we're about to create a framebuffer backed by textures to use as an intermediate
// surface. What to do if its size (as given by framebufferRect) would exceed the
// maximum texture size supported by the GL? The present code chooses the compromise
// of just clamping the framebuffer's size to the max supported size.
// This gives us a lower resolution rendering of the intermediate surface (children layers).
// See bug 827170 for a discussion.
int32_t maxTextureSize = compositor->GetMaxTextureSize();
surfaceRect.width = std::min(maxTextureSize, surfaceRect.width);
surfaceRect.height = std::min(maxTextureSize, surfaceRect.height);
if (aContainer->GetEffectiveVisibleRegion().GetNumRects() == 1 &&
(aContainer->GetContentFlags() & Layer::CONTENT_OPAQUE))
{
mode = INIT_MODE_NONE;
}
if (surfaceCopyNeeded) {
gfx::IntPoint sourcePoint = gfx::IntPoint(visibleRect.x, visibleRect.y);
gfx::Matrix4x4 transform = aContainer->GetEffectiveTransform();
DebugOnly<gfx::Matrix> transform2d;
MOZ_ASSERT(transform.Is2D(&transform2d) && !gfx::ThebesMatrix(transform2d).HasNonIntegerTranslation());
sourcePoint += gfx::IntPoint(transform._41, transform._42);
sourcePoint -= compositor->GetCurrentRenderTarget()->GetOrigin();
surface = compositor->CreateRenderTargetFromSource(surfaceRect, previousTarget, sourcePoint);
} else {
surface = compositor->CreateRenderTarget(surfaceRect, mode);
}
if (!surface) {
return;
}
compositor->SetRenderTarget(surface);
} else {
surface = previousTarget;
}
nsAutoTArray<Layer*, 12> children;
aContainer->SortChildrenBy3DZOrder(children);
// If this is a scrollable container layer, and it's overscrolled, the layer's
// contents are transformed in a way that would leave blank regions in the
// composited area. If the layer has a background color, fill these areas
// with the background color by drawing a rectangle of the background color
// over the entire composited area before drawing the container contents.
if (AsyncPanZoomController* apzc = aContainer->GetAsyncPanZoomController()) {
// Make sure not to do this on a "scrollinfo" layer (one with an empty visible
// region) because it's just a placeholder for APZ purposes.
if (apzc->IsOverscrolled() && !aContainer->GetVisibleRegion().IsEmpty()) {
gfxRGBA color = aContainer->GetBackgroundColor();
// If the background is completely transparent, there's no point in
// drawing anything for it. Hopefully the layers behind, if any, will
// provide suitable content for the overscroll effect.
if (color.a != 0.0) {
EffectChain effectChain(aContainer);
effectChain.mPrimaryEffect = new EffectSolidColor(ToColor(color));
gfx::Rect clipRect(aClipRect.x, aClipRect.y, aClipRect.width, aClipRect.height);
Compositor* compositor = aManager->GetCompositor();
compositor->DrawQuad(compositor->ClipRectInLayersCoordinates(clipRect),
clipRect, effectChain, opacity, Matrix4x4());
}
}
}
/**
* Render this container's contents.
*/
for (uint32_t i = 0; i < children.Length(); i++) {
LayerComposite* layerToRender = static_cast<LayerComposite*>(children.ElementAt(i)->ImplData());
if (layerToRender->GetLayer()->GetEffectiveVisibleRegion().IsEmpty() &&
!layerToRender->GetLayer()->AsContainerLayer()) {
continue;
}
nsIntRect clipRect = layerToRender->GetLayer()->
CalculateScissorRect(aClipRect, &aManager->GetWorldTransform());
if (clipRect.IsEmpty()) {
continue;
}
nsIntRegion savedVisibleRegion;
bool restoreVisibleRegion = false;
if (i + 1 < children.Length() &&
layerToRender->GetLayer()->GetEffectiveTransform().IsIdentity()) {
LayerComposite* nextLayer = static_cast<LayerComposite*>(children.ElementAt(i + 1)->ImplData());
nsIntRect nextLayerOpaqueRect;
if (nextLayer && nextLayer->GetLayer()) {
nextLayerOpaqueRect = GetOpaqueRect(nextLayer->GetLayer());
}
if (!nextLayerOpaqueRect.IsEmpty()) {
savedVisibleRegion = layerToRender->GetShadowVisibleRegion();
nsIntRegion visibleRegion;
visibleRegion.Sub(savedVisibleRegion, nextLayerOpaqueRect);
if (visibleRegion.IsEmpty()) {
continue;
}
layerToRender->SetShadowVisibleRegion(visibleRegion);
restoreVisibleRegion = true;
}
}
if (layerToRender->HasLayerBeenComposited()) {
// Composer2D will compose this layer so skip GPU composition
// this time & reset composition flag for next composition phase
layerToRender->SetLayerComposited(false);
nsIntRect clearRect = layerToRender->GetClearRect();
if (!clearRect.IsEmpty()) {
// Clear layer's visible rect on FrameBuffer with transparent pixels
gfx::Rect fbRect(clearRect.x, clearRect.y, clearRect.width, clearRect.height);
compositor->ClearRect(fbRect);
layerToRender->SetClearRect(nsIntRect(0, 0, 0, 0));
}
} else {
layerToRender->RenderLayer(clipRect);
}
if (restoreVisibleRegion) {
// Restore the region in case it's not covered by opaque content next time
layerToRender->SetShadowVisibleRegion(savedVisibleRegion);
}
if (gfxPrefs::LayersScrollGraph()) {
DrawVelGraph(clipRect, aManager, layerToRender->GetLayer());
}
if (gfxPrefs::UniformityInfo()) {
PrintUniformityInfo(layerToRender->GetLayer());
}
if (gfxPrefs::DrawLayerInfo()) {
DrawLayerInfo(clipRect, aManager, layerToRender->GetLayer());
}
// invariant: our GL context should be current here, I don't think we can
// assert it though
}
if (needsSurface) {
// Unbind the current surface and rebind the previous one.
#ifdef MOZ_DUMP_PAINTING
if (gfxUtils::sDumpPainting) {
RefPtr<gfx::DataSourceSurface> surf = surface->Dump(aManager->GetCompositor());
if (surf) {
WriteSnapshotToDumpFile(aContainer, surf);
}
}
#endif
compositor->SetRenderTarget(previousTarget);
EffectChain effectChain(aContainer);
LayerManagerComposite::AutoAddMaskEffect autoMaskEffect(aContainer->GetMaskLayer(),
effectChain,
!aContainer->GetTransform().CanDraw2D());
aContainer->AddBlendModeEffect(effectChain);
effectChain.mPrimaryEffect = new EffectRenderTarget(surface);
gfx::Rect rect(visibleRect.x, visibleRect.y, visibleRect.width, visibleRect.height);
gfx::Rect clipRect(aClipRect.x, aClipRect.y, aClipRect.width, aClipRect.height);
aManager->GetCompositor()->DrawQuad(rect, clipRect, effectChain, opacity,
aContainer->GetEffectiveTransform());
}
if (aContainer->GetFrameMetrics().IsScrollable()) {
const FrameMetrics& frame = aContainer->GetFrameMetrics();
LayerRect layerBounds = ParentLayerRect(frame.mCompositionBounds) * ParentLayerToLayerScale(1.0);
gfx::Rect rect(layerBounds.x, layerBounds.y, layerBounds.width, layerBounds.height);
gfx::Rect clipRect(aClipRect.x, aClipRect.y, aClipRect.width, aClipRect.height);
aManager->GetCompositor()->DrawDiagnostics(DiagnosticFlags::CONTAINER,
rect, clipRect,
aContainer->GetEffectiveTransform());
}
}
static void DrawVelGraph(const nsIntRect& aClipRect,
LayerManagerComposite* aManager,
Layer* aLayer) {
static char sLayerVelocityUserDataKey;
Compositor* compositor = aManager->GetCompositor();
gfx::Rect clipRect(aClipRect.x, aClipRect.y,
aClipRect.width, aClipRect.height);
TimeStamp now = TimeStamp::Now();
void* key = reinterpret_cast<void*>(&sLayerVelocityUserDataKey);
if (!aLayer->HasUserData(key)) {
aLayer->SetUserData(key, new LayerVelocityUserData());
}
LayerVelocityUserData* velocityData =
static_cast<LayerVelocityUserData*>(aLayer->GetUserData(key));
if (velocityData->mData.size() >= 1 &&
now > velocityData->mData[velocityData->mData.size() - 1].mFrameTime +
TimeDuration::FromMilliseconds(200)) {
// clear stale data
velocityData->mData.clear();
}
nsIntPoint scrollOffset =
aLayer->GetEffectiveVisibleRegion().GetBounds().TopLeft();
velocityData->mData.push_back(
LayerVelocityUserData::VelocityData(now, scrollOffset.x, scrollOffset.y));
// XXX: Uncomment these lines to enable ScrollGraph logging. This is
// useful for HVGA phones or to output the data to accurate
// graphing software.
//printf_stderr("ScrollGraph (%p): %i, %i\n",
// aLayer, scrollOffset.x, scrollOffset.y);
// Keep a circular buffer of 100.
size_t circularBufferSize = 100;
if (velocityData->mData.size() > circularBufferSize) {
velocityData->mData.erase(velocityData->mData.begin());
}
if (velocityData->mData.size() == 1) {
return;
}
// Clear and disable the graph when it's flat
for (size_t i = 1; i < velocityData->mData.size(); i++) {
if (velocityData->mData[i - 1].mPoint != velocityData->mData[i].mPoint) {
break;
}
if (i == velocityData->mData.size() - 1) {
velocityData->mData.clear();
return;
}
}
if (aLayer->GetEffectiveVisibleRegion().GetBounds().width < 300 ||
aLayer->GetEffectiveVisibleRegion().GetBounds().height < 300) {
// Don't want a graph for smaller layers
return;
}
aManager->SetDebugOverlayWantsNextFrame(true);
const gfx::Matrix4x4& transform = aLayer->GetEffectiveTransform();
nsIntRect bounds = aLayer->GetEffectiveVisibleRegion().GetBounds();
gfx::Rect graphBounds = gfx::Rect(bounds.x, bounds.y,
bounds.width, bounds.height);
gfx::Rect graphRect = gfx::Rect(bounds.x, bounds.y, 200, 100);
float opacity = 1.0;
EffectChain effects;
effects.mPrimaryEffect = new EffectSolidColor(gfx::Color(0.2f,0,0,1));
compositor->DrawQuad(graphRect,
clipRect,
effects,
opacity,
transform);
std::vector<gfx::Point> graph;
int yScaleFactor = 3;
for (int32_t i = (int32_t)velocityData->mData.size() - 2; i >= 0; i--) {
const gfx::Point& p1 = velocityData->mData[i+1].mPoint;
const gfx::Point& p2 = velocityData->mData[i].mPoint;
int vel = sqrt((p1.x - p2.x) * (p1.x - p2.x) +
(p1.y - p2.y) * (p1.y - p2.y));
graph.push_back(
gfx::Point(bounds.x + graphRect.width / circularBufferSize * i,
graphBounds.y + graphRect.height - vel/yScaleFactor));
}
compositor->DrawLines(graph, clipRect, gfx::Color(0,1,0,1),
opacity, transform);
}
static void DrawVelGraph(const nsIntRect& aClipRect,
LayerManagerComposite* aManager,
Layer* aLayer) {
Compositor* compositor = aManager->GetCompositor();
gfx::Rect clipRect(aClipRect.x, aClipRect.y,
aClipRect.width, aClipRect.height);
TimeStamp now = TimeStamp::Now();
LayerVelocityUserData* velocityData = GetVelocityData(aLayer);
if (velocityData->mData.size() >= 1 &&
now > velocityData->mData[velocityData->mData.size() - 1].mFrameTime +
TimeDuration::FromMilliseconds(200)) {
// clear stale data
velocityData->mData.clear();
}
const gfx::Point layerTransform = GetScrollData(aLayer);
velocityData->mData.push_back(
LayerVelocityUserData::VelocityData(now,
static_cast<int>(layerTransform.x), static_cast<int>(layerTransform.y)));
// TODO: dump to file
// XXX: Uncomment these lines to enable ScrollGraph logging. This is
// useful for HVGA phones or to output the data to accurate
// graphing software.
// printf_stderr("ScrollGraph (%p): %f, %f\n",
// aLayer, layerTransform.x, layerTransform.y);
// Keep a circular buffer of 100.
size_t circularBufferSize = 100;
if (velocityData->mData.size() > circularBufferSize) {
velocityData->mData.erase(velocityData->mData.begin());
}
if (velocityData->mData.size() == 1) {
return;
}
// Clear and disable the graph when it's flat
for (size_t i = 1; i < velocityData->mData.size(); i++) {
if (velocityData->mData[i - 1].mPoint != velocityData->mData[i].mPoint) {
break;
}
if (i == velocityData->mData.size() - 1) {
velocityData->mData.clear();
return;
}
}
if (aLayer->GetEffectiveVisibleRegion().GetBounds().width < 300 ||
aLayer->GetEffectiveVisibleRegion().GetBounds().height < 300) {
// Don't want a graph for smaller layers
return;
}
aManager->SetDebugOverlayWantsNextFrame(true);
const Matrix4x4& transform = aLayer->GetEffectiveTransform();
nsIntRect bounds = aLayer->GetEffectiveVisibleRegion().GetBounds();
IntSize graphSize = IntSize(200, 100);
Rect graphRect = Rect(bounds.x, bounds.y, graphSize.width, graphSize.height);
RefPtr<DrawTarget> dt = aManager->CreateDrawTarget(graphSize, SurfaceFormat::B8G8R8A8);
dt->FillRect(Rect(0, 0, graphSize.width, graphSize.height),
ColorPattern(Color(0.2f,0,0,1)));
int yScaleFactor = 3;
Point prev = Point(0,0);
bool first = true;
for (int32_t i = (int32_t)velocityData->mData.size() - 2; i >= 0; i--) {
const gfx::Point& p1 = velocityData->mData[i+1].mPoint;
const gfx::Point& p2 = velocityData->mData[i].mPoint;
int vel = sqrt((p1.x - p2.x) * (p1.x - p2.x) +
(p1.y - p2.y) * (p1.y - p2.y));
Point next = Point(graphRect.width / circularBufferSize * i,
graphRect.height - vel/yScaleFactor);
if (first) {
first = false;
} else {
dt->StrokeLine(prev, next, ColorPattern(Color(0,1,0,1)));
}
prev = next;
}
RefPtr<DataTextureSource> textureSource = compositor->CreateDataTextureSource();
RefPtr<SourceSurface> snapshot = dt->Snapshot();
RefPtr<DataSourceSurface> data = snapshot->GetDataSurface();
textureSource->Update(data);
EffectChain effectChain;
effectChain.mPrimaryEffect = CreateTexturedEffect(SurfaceFormat::B8G8R8A8,
textureSource,
Filter::POINT,
true);
compositor->DrawQuad(graphRect,
clipRect,
effectChain,
1.0f,
transform);
}