Opened 15 years ago
Last modified 15 years ago
#1489 assigned defect
\t(\fs) drawing issue
| Reported by: | Owned by: | ||
|---|---|---|---|
| Priority: | normal | Component: | libass |
| Version: | unspecified | Severity: | normal |
| Keywords: | Cc: | ||
| Blocked By: | Blocking: | ||
| Reproduced by developer: | no | Analyzed by developer: | no |
Description
Looks like libass drawing "zoom" effect like if you changing font size from 10 to 14 only in 4 steps? it looks "jumply", in vsfilter that going by pixel
take a look at...
LibASS implementation (SVN r28823)
http://petrkr.net/a/zoom-libass.avi
VS Filter
http://petrkr.net/a/zoom-vsfiltr.avi
ASS Line
{\fs54\t(\fs64)}TESTING ZOOM
is problem on my side or on rendering side?
Change History (2)
comment:1 by , 15 years ago
| Status: | new → assigned |
|---|
comment:2 by , 15 years ago
Or maybe I'll use font x/y scale that's better
LibASS
http://petrkr.net/a/zoom-libass-fscale.avi
VSFiler
http://petrkr.net/a/zoom-vsfilter-fscale.avi
ASS Line
{\fs50\t(\fscy120\fscx120)}TESTING ZOOM
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I also see this problem.
It happens because FreeType grid-fits font metrics, making sure that, for instance, face height is always some number of full pixels. If I scale it the exact amount, text will look blurry, especially for small font sizes.
I'm not sure what the right solution should be. Maybe it's a good idea to display static text grid-fitted, and switch to blurry text for animations.