本文整理汇总了C++中TiledLayerComposer::GetValidLowPrecisionRegion方法的典型用法代码示例。如果您正苦于以下问题：C++ TiledLayerComposer::GetValidLowPrecisionRegion方法的具体用法？C++ TiledLayerComposer::GetValidLowPrecisionRegion怎么用？C++ TiledLayerComposer::GetValidLowPrecisionRegion使用的例子？那么恭喜您, 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TiledLayerComposer的用法示例。
在下文中一共展示了TiledLayerComposer::GetValidLowPrecisionRegion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: ComputeRenderIntegrityInternal
/* static */ void
LayerManagerComposite::ComputeRenderIntegrityInternal(Layer* aLayer,
nsIntRegion& aScreenRegion,
nsIntRegion& aLowPrecisionScreenRegion,
const Matrix4x4& aTransform)
{
if (aLayer->GetOpacity() <= 0.f ||
(aScreenRegion.IsEmpty() && aLowPrecisionScreenRegion.IsEmpty())) {
return;
}
// If the layer's a container, recurse into all of its children
ContainerLayer* container = aLayer->AsContainerLayer();
if (container) {
// Accumulate the transform of intermediate surfaces
Matrix4x4 transform = aTransform;
if (container->UseIntermediateSurface()) {
transform = aLayer->GetEffectiveTransform();
transform = aTransform * transform;
}
for (Layer* child = aLayer->GetFirstChild(); child;
child = child->GetNextSibling()) {
ComputeRenderIntegrityInternal(child, aScreenRegion, aLowPrecisionScreenRegion, transform);
}
return;
}
// Only thebes layers can be incomplete
ThebesLayer* thebesLayer = aLayer->AsThebesLayer();
if (!thebesLayer) {
return;
}
// See if there's any incomplete rendering
nsIntRegion incompleteRegion = aLayer->GetEffectiveVisibleRegion();
incompleteRegion.Sub(incompleteRegion, thebesLayer->GetValidRegion());
if (!incompleteRegion.IsEmpty()) {
// Calculate the transform to get between screen and layer space
Matrix4x4 transformToScreen = aLayer->GetEffectiveTransform();
transformToScreen = aTransform * transformToScreen;
SubtractTransformedRegion(aScreenRegion, incompleteRegion, transformToScreen);
// See if there's any incomplete low-precision rendering
TiledLayerComposer* composer = nullptr;
LayerComposite* shadow = aLayer->AsLayerComposite();
if (shadow) {
composer = shadow->GetTiledLayerComposer();
if (composer) {
incompleteRegion.Sub(incompleteRegion, composer->GetValidLowPrecisionRegion());
if (!incompleteRegion.IsEmpty()) {
SubtractTransformedRegion(aLowPrecisionScreenRegion, incompleteRegion, transformToScreen);
}
}
}
// If we can't get a valid low precision region, assume it's the same as
// the high precision region.
if (!composer) {
SubtractTransformedRegion(aLowPrecisionScreenRegion, incompleteRegion, transformToScreen);
}
}
}