Re: Horizontal artifacts rendering to an image surface
"Floyd May" <[email protected]>
| Newsgroups | gmane.comp.lib.cairo |
|---|---|
| Message-ID | <[email protected]> |
-----Original Message----- From: Søren Sandmann [mailto:[email protected]] Sent: Friday, July 27, 2012 4:43 PM To: Floyd May Cc: [email protected] Subject: Re: [cairo] Horizontal artifacts rendering to an image surface Floyd May <[email protected]>> writes: >> I've been able to boil this down to a reproducible, small case. >> Basically, two four-point polygons where one edge from each is >> collinear. Using even-odd rendering, I'm getting these artifacts: >> >> http://imagebin.org/222354 >> >> Again, this is based on v 1.10.2, on Windows (both x86 and x64 exhibit >> the issue), based on a recent download of GTK+ binaries. >> >> Here is C# source (using Mono.Cairo; should be able to adapt to C code >> relatively easily): > FWIW, here is a C variant that shows the same artefact and also > demonstrates that it doesn't happen with the X backend. > (To use the X backend, set the "const int image" variable to 0). So it seems that this is limited to the backend for image surfaces. Is this a pixman thing? Is this fixed in a later version of Cairo? -- cairo mailing list [email protected] http://lists.cairographics.org/mailman/listinfo/cairo