hg: openjfx/9-dev/rt: 8180086: Changing cache hint can cause effect to darken

[james.graham at oracle.com]

Changeset: 92ff226d7b61
Author:    flar
Date:      2017-05-12 15:56 -0700
URL:       http://hg.openjdk.java.net/openjfx/9-dev/rt/rev/92ff226d7b61

8180086: Changing cache hint can cause effect to darken
Reviewed-by: kcr, ckyang

! modules/javafx.graphics/src/main/java/com/sun/prism/impl/ps/CachingShapeRep.java
+ tests/system/src/test/java/test/com/sun/prism/impl/ps/ShapeCacheTest.java