> Bug #3: MUL0123 is enabled whenever the src > and dst both have 32-bit pixel width, but there is > no check that the sub-channels are in the same > order. You don't say what the image chans were > in your test, but this: > > src rFF g00 b00 αFF > mask kFF αFF > dst r00 g00 b00 αFF > dst after calc rFE gFE b00 α00 > > would be explained by, say, src==ARGB and > dst==RGBA. The A and R values in src became > the R and G chans in dst. (In fact, since the dst > R and G are FE not FF, that's almost certainly > the scenario, modulo the little-endian draw names.)
it was indeed ARGB/RGBA (or the other way around) as I had focused testing only on those two. thanks for the explanation!
