When converting the data in cogl_read_pixels it was using bmp_format
instead of the format passed in to the function. bmp_format is the
same as the passed in format except that it always has the premult bit
set. Therefore the conversion would not handle premultiply correctly.
http://bugzilla.clutter-project.org/show_bug.cgi?id=2414
allocating its own buffer so we have to copy the data
again */
if ((dst_bmp = _cogl_bitmap_convert_format_and_premult (tmp_bmp,
- bmp_format)))
+ format)))
{
_cogl_bitmap_copy_subregion (dst_bmp,
bmp,