Textures not scheduled for deletion while scrolling QML view.

This happened when scrolling a view using an Image delegate (containing
QSGTexture). All textures were deleted at exit, but it is important to
immediately schedule the texture for deletion whenever the delegate is
destroyed to avoid unnecessary high memory consumption.

Task-number: QTBUG-19511
Reviewed-by: gunnar

diff --git a/src/declarative/util/qdeclarativepixmapcache.cpp b/src/declarative/util/qdeclarativepixmapcache.cpp
index fa3be22..f138741 100644 (file)
--- a/src/declarative/util/qdeclarativepixmapcache.cpp
+++ b/src/declarative/util/qdeclarativepixmapcache.cpp
@@ -876,6 +876,10 @@ bool QDeclarativePixmapReply::event(QEvent *event)
 
 int QDeclarativePixmapData::cost() const
 {
+    if (texture) {
+        const QSize textureSize = texture->textureSize();
+        return textureSize.width() * textureSize.height();
+    }
     return (pixmap.width() * pixmap.height() * pixmap.depth()) / 8;
 }