Fixed color clear for non multisampled rendertargets Bug 27454381 Change-Id: Ie59adfa5e5faf08a09427c993775e7d2892d311b Reviewed-on: https://swiftshader-review.googlesource.com/4913 Tested-by: Alexis Hétu <sugoi@google.com> Reviewed-by: Nicolas Capens <capn@google.com> Tested-by: Nicolas Capens <capn@google.com>