Re: understanding RecordingSurfaces
Uli Schlachter <[email protected]>
| Newsgroups | gmane.comp.lib.cairo |
|---|---|
| Message-ID | <[email protected]> |
Hi, On 04.09.2013 19:57, Andreas Lobinger wrote: > i'm trying to use a RecordingSurface for some intermediate rendering, so i > draw a part of the drawing onto a surface and then paint it with > set_source_surface and paint_with_alpha onto an ImageSurface. This > intermediate is scaled before painted. So i get the pixel interpolation. > > Now i moved the intermediate to a RecordingSurface and have two problems. > > * If i do not set the size, so unbounded, i immediately get out-of-memory > error. How immediately is it? Does creation of the recording surface fail or is some other operation failing? > * Even if i set the size, in large scale factors, i see some pixels in > painting. > > The documentation is not clear to me: Is the RecordingSurface, when used as > source, first rendered to a bitmap and then painted? Most likely, it is. However, I would guess that the transformation is applied before drawing, so that there shouldn't be "any pixels" in the results. > How would i achieve a scalable recorded vector drawing? Via a recording surface, I guess... Do you have a relatively simple, self-contained example program demonstrating the problem you are seeing? Uli -- Sent from my Game Boy. -- cairo mailing list [email protected] http://lists.cairographics.org/mailman/listinfo/cairo