Merge pull request w3c#372 from mfreed7/add_more_warnings

Added more issue markers for the lack of consensus on backdrop root

Author: chrishtr

filter-effects-2/Overview.bs

@@ -30,7 +30,7 @@ filter effect, or provided as a CSS image value.
 This is Level 2 of the Filter Effects Module. It is currently written as
 a "delta", describing any differences from Level 1.
 
-Issue: This specification drafted for discussion and does not yet have Working Group consensus.
+Issue: This specification was drafted for discussion, and does not yet have Working Group consensus.
 See <a href="https://github.com/w3c/fxtf-drafts/issues/53">discussion in issue 53</a>.
 
 
@@ -104,6 +104,9 @@ The <dfn>Backdrop Root Image</dfn> for an element E is the final image that woul
 3. Flatten the painted content into a 2D screen-space buffer.
 4. Transform the border box of element E to 2D screen-space, and clip the final painted output to this border quad.
 
+Issue: This specification does not yet have Working Group consensus, specifically on the definition of Backdrop Root.
+See <a href="https://github.com/w3c/fxtf-drafts/issues/53">discussion in issue 53</a>.
+
 Note: No content that is a DOM ancestor of the Backdrop Root element should
 contribute to or affect the Backdrop Root Image.
 
@@ -310,6 +313,9 @@ performance breakdown. Clearly, this is not a scalable approach.
 
 <em>This section is non-normative</em>
 
+Issue: This specification does not yet have Working Group consensus, specifically on the definition of Backdrop Root.
+See <a href="https://github.com/w3c/fxtf-drafts/issues/53">discussion in issue 53</a>.
+
 As described in [[#BackdropRootMotivation]], several operations pose fundamental problems for operations that need to read back content that was painted before, and then re-paint that content (possibly filtered or blended) again. The list of element types that trigger a [[#BackdropRoot]] each pose one of these problems. Some are obvious and some are more nuanced. This section describes why each trigger is necessary.
 
 Obvious triggers: