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Unified Diff: src/core/SkImageFilter.cpp

Issue 1301823005: Reland of Implement canComputeFastBounds() for image filters. (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: Created 5 years, 4 months ago
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Index: src/core/SkImageFilter.cpp
diff --git a/src/core/SkImageFilter.cpp b/src/core/SkImageFilter.cpp
index 3214eeb40eee8c3ecf4d61113b726f1f1722a58f..5f9fa64110dbb171932759cce6c36ea3ffb2730c 100644
--- a/src/core/SkImageFilter.cpp
+++ b/src/core/SkImageFilter.cpp
@@ -284,6 +284,23 @@
}
}
+bool SkImageFilter::canComputeFastBounds() const {
+ if (this->affectsTransparentBlack()) {
+ return false;
+ }
+ for (int i = 0; i < fInputCount; i++) {
+ SkImageFilter* input = this->getInput(i);
+ if (input && !input->canComputeFastBounds()) {
+ return false;
+ }
+ }
+ return true;
+}
+
+bool SkImageFilter::affectsTransparentBlack() const {
+ return false;
+}
+
bool SkImageFilter::onFilterImage(Proxy*, const SkBitmap&, const Context&,
SkBitmap*, SkIPoint*) const {
return false;
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