Re: Concerns about using filters for downscaling
[email protected] (Søren Sandmann)
| Newsgroups | gmane.comp.lib.cairo |
|---|---|
| Message-ID | <[email protected]> |
Owen Taylor <[email protected]> writes: > (Søren pointed out on IRC that the pixman implemention of convolution > is not SIMD optimized, so their would be future opportunity to improve > what we can do within the constraints of 5-10x slower.) Also, the pixman convolution filter is designed to be implemented in a separable way, but the current code doesn't do that. This optimization should be another major speedup for filters with wide support such as as Lanczos. Søren -- cairo mailing list [email protected] http://lists.cairographics.org/mailman/listinfo/cairo