Fix the problem that mDamageGenerationId is a random value
1. mDamageGenerationId is a random value when initialized. When this random value happens to be equal to info.damageGenerationId, the dirty range will reach the maximum DIRTY_MAX.
2. When info.damageGenerationId is equal to 0, which is when the first frame of the APP is drawn, there is no need to reach the maximum DIRTY_MAX in the dirty range.
Bug: 321612817
Test: build
Change-Id: Iab6a04170926d10cdf2a62ae0fbf9cbe5eeb8bbf
Signed-off-by: qiubowen <qiubowen@xiaomi.com>
diff --git a/libs/hwui/RenderNode.cpp b/libs/hwui/RenderNode.cpp
index 1dd22cf..a733d17 100644
--- a/libs/hwui/RenderNode.cpp
+++ b/libs/hwui/RenderNode.cpp
@@ -218,7 +218,7 @@
* stencil buffer may be needed. Views that use a functor to draw will be forced onto a layer.
*/
void RenderNode::prepareTreeImpl(TreeObserver& observer, TreeInfo& info, bool functorsNeedLayer) {
- if (mDamageGenerationId == info.damageGenerationId) {
+ if (mDamageGenerationId == info.damageGenerationId && mDamageGenerationId != 0) {
// We hit the same node a second time in the same tree. We don't know the minimal
// damage rect anymore, so just push the biggest we can onto our parent's transform
// We push directly onto parent in case we are clipped to bounds but have moved position.