It's due to the code to set TEXTURE_WRAP_R to CLAMP_TO_EDGE. Remove it for now.
Created attachment 66000 [details] patch
Comment on attachment 66000 [details] patch Looks good to me. r=me
Committed r66509: <http://trac.webkit.org/changeset/66509>
http://trac.webkit.org/changeset/66509 might have broken Leopard Intel Debug (Tests) The following changes are on the blame list: http://trac.webkit.org/changeset/66505 http://trac.webkit.org/changeset/66506 http://trac.webkit.org/changeset/66507 http://trac.webkit.org/changeset/66508 http://trac.webkit.org/changeset/66509