Adjust texture coordinates to not render padding at the end of lines, and better calculate the stride of UV planes. Task-number: QTBUG-38218 Task-number: QTBUG-30447 Change-Id: I7b7577979719c48460b838f7dcc89b9d17741f79 Reviewed-by: Yoann Lopes <yoann.lopes@digia.com>