Bug 1757396 - Prevent SVG geometry with markers from being active. r=gfx-reviewers,lsalzman

We don't currently check whether the geometry has markers, nor do we try to render them properly with WebRender display items.

This is caught by the reftest paint-order-001.svg when active SVG images and rects are enabled.

Differential Revision: https://phabricator.services.mozilla.com/D140808

layout/svg/SVGGeometryFrame.cpp

@@ -819,6 +819,13 @@ bool SVGGeometryFrame::CreateWebRenderCommands(
     return false;
   }
 
+  SVGMarkerFrame* markerFrames[SVGMark::eTypeCount];
+  if (element->IsMarkable() &&
+      SVGObserverUtils::GetAndObserveMarkers(this, &markerFrames)) {
+    // Markers aren't suppported yet.
+    return false;
+  }
+
   if (!aDryRun) {
     auto rect = simplePath.AsRect();