Bug 1211360 - Don't snap for non-translation 3D transform. r=roc

2015-10-25 22:05:00 -04:00
parent bb61e94018
commit 31d944f459
4 changed files with 37 additions and 5 deletions
--- a/gfx/layers/Layers.cpp
+++ b/gfx/layers/Layers.cpp
@@ -660,7 +660,9 @@ Layer::SnapTransformTranslation(const Matrix4x4& aTransform,
  }

  if(aTransform.IsSingular() ||
-     (aTransform._14 != 0 || aTransform._24 != 0 || aTransform._34 != 0)) {
+     aTransform.HasPerspectiveComponent() ||
+     aTransform.HasNonTranslation() ||
+     !aTransform.HasNonIntegerTranslation()) {
    // For a singular transform, there is no reversed matrix, so we
    // don't snap it.
    // For a perspective transform, the content is transformed in