16c185bac6
This reverts part of "visual: enable commented out code again." (commit 8222ba16c8f671dc03e24e7b60e3e703046e58c1). The shader code does indeed look broken (or rather, it makes assumptions that are not necessarily true here, namly that pixel stride is 4, for example), which makes totem very crashy and causes other weird behaviour. Also see https://bugzilla.gnome.org/show_bug.cgi?id=683527