0ad3a475ef
In a number of places the SwapBytes handling didn't handle cases with GL_(UN)PACK_ALIGNMENT set and 7 byte width cases aligned to 8 bytes. This adds a common routine to swap bytes a 2D image and uses this code in: texture storage texture get readpixels swrast drawpixels. [airlied: updated with Brian's nitpicks]. Cc: "11.0" <mesa-stable@lists.freedesktop.org> Reviewed-by: Brian Paul <brianp@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>