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-rw-r--r--layout/base/nsDisplayList.cpp10
1 files changed, 8 insertions, 2 deletions
diff --git a/layout/base/nsDisplayList.cpp b/layout/base/nsDisplayList.cpp
index e35e027e3..cd0c623df 100644
--- a/layout/base/nsDisplayList.cpp
+++ b/layout/base/nsDisplayList.cpp
@@ -5917,6 +5917,12 @@ nsDisplayTransform::GetResultingTransformMatrixInternal(const FrameTransformProp
frame && frame->IsSVGTransformed(&svgTransform, &transformFromSVGParent);
bool hasTransformFromSVGParent =
hasSVGTransforms && !transformFromSVGParent.IsIdentity();
+
+ // An SVG frame should not have its translation rounded.
+ // Note it's possible that the SVG frame doesn't have an SVG
+ // transform but only has a CSS transform.
+ bool shouldRound = !(frame && frame->IsFrameOfType(nsIFrame::eSVG));
+
/* Transformed frames always have a transform, or are preserving 3d (and might still have perspective!) */
if (aProperties.mTransformList) {
result = nsStyleTransformMatrix::ReadTransforms(aProperties.mTransformList->mHead,
@@ -5994,7 +6000,7 @@ nsDisplayTransform::GetResultingTransformMatrixInternal(const FrameTransformProp
// Otherwise we need to manually translate into our parent's coordinate
// space.
if (frame->IsTransformed()) {
- nsLayoutUtils::PostTranslate(result, frame->GetPosition(), aAppUnitsPerPixel, !hasSVGTransforms);
+ nsLayoutUtils::PostTranslate(result, frame->GetPosition(), aAppUnitsPerPixel, shouldRound);
}
Matrix4x4 parent =
GetResultingTransformMatrixInternal(props,
@@ -6005,7 +6011,7 @@ nsDisplayTransform::GetResultingTransformMatrixInternal(const FrameTransformProp
}
if (aFlags & OFFSET_BY_ORIGIN) {
- nsLayoutUtils::PostTranslate(result, aOrigin, aAppUnitsPerPixel, !hasSVGTransforms);
+ nsLayoutUtils::PostTranslate(result, aOrigin, aAppUnitsPerPixel, shouldRound);
}
return result;