Re: Better Examples of Cairo Operators
Lawrence D'Oliveiro <[email protected]>
| Newsgroups | gmane.comp.lib.cairo |
|---|---|
| Organization | Geek Central |
| Message-ID | <[email protected]> |
I wrote: > I wrote: > >> For a start, I notice an interesting discrepancy in the behaviour of >> the “clear” operators: the Pixman versions seem to wipe out the >> entire destination, even where the source is fully transparent. > > OK, thinking about it, the “discrepancy” is not due to any difference > in the meaning of “clear”, but is down to the difference in what I am > actually compositing: in the Cairo example this is just one patterned > rectangle, where in the Pixman one it is the entire source Image > containing said rectangle. Hmm, I tried adding a mask to constrain the compositing to exactly the area of the source rectangle. But it still wipes out the entire destination... -- cairo mailing list [email protected] http://lists.cairographics.org/mailman/listinfo/cairo