本文整理汇总了C++中LayerComposite::GetClearFB方法的典型用法代码示例。如果您正苦于以下问题：C++ LayerComposite::GetClearFB方法的具体用法？C++ LayerComposite::GetClearFB怎么用？C++ LayerComposite::GetClearFB使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类LayerComposite的用法示例。
在下文中一共展示了LayerComposite::GetClearFB方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: aRect
//.........这里部分代码省略.........
}
compositor->SetRenderTarget(surface);
} else {
surface = previousTarget;
aContainer->mSupportsComponentAlphaChildren = (aContainer->GetContentFlags() & Layer::CONTENT_OPAQUE) ||
(aContainer->GetParent() && aContainer->GetParent()->SupportsComponentAlphaChildren());
}
nsAutoTArray<Layer*, 12> children;
aContainer->SortChildrenBy3DZOrder(children);
/**
* 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;
}
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()) {
nsIntRegion visibleRegion;
visibleRegion.Sub(layerToRender->GetShadowVisibleRegion(), nextLayerOpaqueRect);
layerToRender->SetShadowVisibleRegion(visibleRegion);
if (visibleRegion.IsEmpty()) {
continue;
}
}
}
nsIntRect clipRect = layerToRender->GetLayer()->
CalculateScissorRect(aClipRect, &aManager->GetWorldTransform());
if (clipRect.IsEmpty()) {
continue;
}
if (layerToRender->HasLayerBeenComposited()) {
// Composer2D will compose this layer so skip GPU composition
// this time & reset composition flag for next composition phase
layerToRender->SetLayerComposited(false);
if (layerToRender->GetClearFB()) {
// Clear layer's visible rect on FrameBuffer with transparent pixels
gfx::Rect aRect(clipRect.x, clipRect.y, clipRect.width, clipRect.height);
compositor->clearFBRect(&aRect);
layerToRender->SetClearFB(false);
}
} else {
layerToRender->RenderLayer(clipRect);
}
if (gfxPlatform::GetPrefLayersScrollGraph()) {
DrawVelGraph(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());
WriteSnapshotToDumpFile(aContainer, surf);
}
#endif
compositor->SetRenderTarget(previousTarget);
EffectChain effectChain;
LayerManagerComposite::AutoAddMaskEffect autoMaskEffect(aContainer->GetMaskLayer(),
effectChain,
!aContainer->GetTransform().CanDraw2D());
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 = ScreenRect(frame.mCompositionBounds) * ScreenToLayerScale(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(DIAGNOSTIC_CONTAINER,
rect, clipRect,
aContainer->GetEffectiveTransform());
}
}