Stop comparing Descriptions with memcmp
bug:27894959
Change-Id: I379c11381c08f6f77577a914638b32415768f26e
diff --git a/libs/hwui/PathCache.cpp b/libs/hwui/PathCache.cpp
index 8f914ac..a8ace8c 100644
--- a/libs/hwui/PathCache.cpp
+++ b/libs/hwui/PathCache.cpp
@@ -19,6 +19,7 @@
#include <SkColor.h>
#include <SkPaint.h>
#include <SkPath.h>
+#include <SkPathEffect.h>
#include <SkRect.h>
#include <utils/JenkinsHash.h>
@@ -35,18 +36,34 @@
namespace android {
namespace uirenderer {
+template <class T>
+static bool compareWidthHeight(const T& lhs, const T& rhs) {
+ return (lhs.mWidth == rhs.mWidth) && (lhs.mHeight == rhs.mHeight);
+}
+
+static bool compareRoundRects(const PathDescription::Shape::RoundRect& lhs,
+ const PathDescription::Shape::RoundRect& rhs) {
+ return compareWidthHeight(lhs, rhs) && lhs.mRx == rhs.mRx && lhs.mRy == rhs.mRy;
+}
+
+static bool compareArcs(const PathDescription::Shape::Arc& lhs, const PathDescription::Shape::Arc& rhs) {
+ return compareWidthHeight(lhs, rhs) && lhs.mStartAngle == rhs.mStartAngle &&
+ lhs.mSweepAngle == rhs.mSweepAngle && lhs.mUseCenter == rhs.mUseCenter;
+}
+
///////////////////////////////////////////////////////////////////////////////
// Cache entries
///////////////////////////////////////////////////////////////////////////////
PathDescription::PathDescription()
- : type(kShapeNone)
+ : type(ShapeType::None)
, join(SkPaint::kDefault_Join)
, cap(SkPaint::kDefault_Cap)
, style(SkPaint::kFill_Style)
, miter(4.0f)
, strokeWidth(1.0f)
, pathEffect(nullptr) {
+ // Shape bits should be set to zeroes, because they are used for hash calculation.
memset(&shape, 0, sizeof(Shape));
}
@@ -58,11 +75,12 @@
, miter(paint->getStrokeMiter())
, strokeWidth(paint->getStrokeWidth())
, pathEffect(paint->getPathEffect()) {
+ // Shape bits should be set to zeroes, because they are used for hash calculation.
memset(&shape, 0, sizeof(Shape));
}
hash_t PathDescription::hash() const {
- uint32_t hash = JenkinsHashMix(0, type);
+ uint32_t hash = JenkinsHashMix(0, static_cast<int>(type));
hash = JenkinsHashMix(hash, join);
hash = JenkinsHashMix(hash, cap);
hash = JenkinsHashMix(hash, style);
@@ -73,6 +91,32 @@
return JenkinsHashWhiten(hash);
}
+bool PathDescription::operator==(const PathDescription& rhs) const {
+ if (type != rhs.type) return false;
+ if (join != rhs.join) return false;
+ if (cap != rhs.cap) return false;
+ if (style != rhs.style) return false;
+ if (miter != rhs.miter) return false;
+ if (strokeWidth != rhs.strokeWidth) return false;
+ if (pathEffect != rhs.pathEffect) return false;
+ switch (type) {
+ case ShapeType::None:
+ return 0;
+ case ShapeType::Rect:
+ return compareWidthHeight(shape.rect, rhs.shape.rect);
+ case ShapeType::RoundRect:
+ return compareRoundRects(shape.roundRect, rhs.shape.roundRect);
+ case ShapeType::Circle:
+ return shape.circle.mRadius == rhs.shape.circle.mRadius;
+ case ShapeType::Oval:
+ return compareWidthHeight(shape.oval, rhs.shape.oval);
+ case ShapeType::Arc:
+ return compareArcs(shape.arc, rhs.shape.arc);
+ case ShapeType::Path:
+ return shape.path.mGenerationID == rhs.shape.path.mGenerationID;
+ }
+}
+
///////////////////////////////////////////////////////////////////////////////
// Utilities
///////////////////////////////////////////////////////////////////////////////
@@ -322,7 +366,7 @@
LruCache<PathDescription, PathTexture*>::Iterator iter(mCache);
while (iter.next()) {
const PathDescription& key = iter.key();
- if (key.type == kShapePath && key.shape.path.mGenerationID == generationID) {
+ if (key.type == ShapeType::Path && key.shape.path.mGenerationID == generationID) {
pathsToRemove.push(key);
}
}
@@ -336,7 +380,7 @@
}
PathTexture* PathCache::get(const SkPath* path, const SkPaint* paint) {
- PathDescription entry(kShapePath, paint);
+ PathDescription entry(ShapeType::Path, paint);
entry.shape.path.mGenerationID = path->getGenerationID();
PathTexture* texture = mCache.get(entry);
@@ -366,9 +410,8 @@
return texture;
}
-void PathCache::remove(const SkPath* path, const SkPaint* paint)
-{
- PathDescription entry(kShapePath, paint);
+void PathCache::remove(const SkPath* path, const SkPaint* paint) {
+ PathDescription entry(ShapeType::Path, paint);
entry.shape.path.mGenerationID = path->getGenerationID();
mCache.remove(entry);
}
@@ -378,7 +421,7 @@
return;
}
- PathDescription entry(kShapePath, paint);
+ PathDescription entry(ShapeType::Path, paint);
entry.shape.path.mGenerationID = path->getGenerationID();
PathTexture* texture = mCache.get(entry);
@@ -417,7 +460,7 @@
PathTexture* PathCache::getRoundRect(float width, float height,
float rx, float ry, const SkPaint* paint) {
- PathDescription entry(kShapeRoundRect, paint);
+ PathDescription entry(ShapeType::RoundRect, paint);
entry.shape.roundRect.mWidth = width;
entry.shape.roundRect.mHeight = height;
entry.shape.roundRect.mRx = rx;
@@ -442,7 +485,7 @@
///////////////////////////////////////////////////////////////////////////////
PathTexture* PathCache::getCircle(float radius, const SkPaint* paint) {
- PathDescription entry(kShapeCircle, paint);
+ PathDescription entry(ShapeType::Circle, paint);
entry.shape.circle.mRadius = radius;
PathTexture* texture = get(entry);
@@ -462,7 +505,7 @@
///////////////////////////////////////////////////////////////////////////////
PathTexture* PathCache::getOval(float width, float height, const SkPaint* paint) {
- PathDescription entry(kShapeOval, paint);
+ PathDescription entry(ShapeType::Oval, paint);
entry.shape.oval.mWidth = width;
entry.shape.oval.mHeight = height;
@@ -485,7 +528,7 @@
///////////////////////////////////////////////////////////////////////////////
PathTexture* PathCache::getRect(float width, float height, const SkPaint* paint) {
- PathDescription entry(kShapeRect, paint);
+ PathDescription entry(ShapeType::Rect, paint);
entry.shape.rect.mWidth = width;
entry.shape.rect.mHeight = height;
@@ -509,7 +552,7 @@
PathTexture* PathCache::getArc(float width, float height,
float startAngle, float sweepAngle, bool useCenter, const SkPaint* paint) {
- PathDescription entry(kShapeArc, paint);
+ PathDescription entry(ShapeType::Arc, paint);
entry.shape.arc.mWidth = width;
entry.shape.arc.mHeight = height;
entry.shape.arc.mStartAngle = startAngle;