bool CompositingLayerAssigner::needsOwnBacking(const DeprecatedPaintLayer* layer) const
{
if (!m_compositor->canBeComposited(layer))
return false;
return requiresCompositing(layer->compositingReasons()) || (m_compositor->staleInCompositingMode() && layer->isRootLayer());
}
static bool requiresCompositingOrSquashing(CompositingReasons reasons)
{
#if ENABLE(ASSERT)
bool fastAnswer = reasons != CompositingReasonNone;
bool slowAnswer = requiresCompositing(reasons) || requiresSquashing(reasons);
ASSERT(fastAnswer == slowAnswer);
#endif
return reasons != CompositingReasonNone;
}
bool CompositingLayerAssigner::needsOwnBacking(const RenderLayer* layer) const
{
if (!m_compositor->canBeComposited(layer))
return false;
// If squashing is disabled, then layers that would have been squashed should just be separately composited.
bool needsOwnBackingForDisabledSquashing = !m_layerSquashingEnabled && requiresSquashing(layer->compositingReasons());
return requiresCompositing(layer->compositingReasons()) || needsOwnBackingForDisabledSquashing || (m_compositor->staleInCompositingMode() && layer->isRootLayer());
}
