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Re: [AGG] Blending (again) [resend]
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From: Michael D. <md...@st...> - 2014-10-28 22:44:43
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Sorry -- I completely missed it earlier. My bad. I'll try it and get back. Mike On 10/28/2014 04:49 PM, Wojciech Mamrak wrote: > Have you tried my patch? > > 2014-10-28 21:03 GMT+01:00 Michael Droettboom <md...@st...>: >> Any thoughts/pointers about where I could start to fix this? >> >> Cheers, >> Mike >> >> >> On 10/17/2014 02:25 PM, Wojciech Mamrak wrote: >> >> I thought it was more sophisticated, but it turns out that changes to >> revisions [99, 102) were more involving. >> >> 2014-10-17 19:56 GMT+02:00 Wojciech Mamrak <wm...@gm...>: >> >> I might have a patch ready for this, brb. >> >> 2014-10-17 19:42 GMT+02:00 Jim Barry <ji...@ch...>: >> >> On 17 October 2014 17:52, Michael Droettboom <md...@st...> wrote: >> >> In agg-2.4, if I draw a rectangle path with RGB value of (0, 255, 102, >> 64), the resulting pixel value is (0, 255, 102, 64). >> >> In agg-svn, I get (0, 255, 104, 64). >> >> it seems the difference is not so much in anything intentional >> but from the fact that everything but the final demultiply is downgraded >> to color_type, and then the demultiply happens. Whereas in the old >> version, it’s still doing calculations in calc_type (uint16) up until >> the final demultiply. >> >> Yes, I see the problem. I suppose it must have happened when refactoring for >> the floating-point support. I will try to think of a solution. >> >> - Jim >> >> ------------------------------------------------------------------------------ >> Comprehensive Server Monitoring with Site24x7. >> Monitor 10 servers for $9/Month. >> Get alerted through email, SMS, voice calls or mobile push notifications. >> Take corrective actions from your mobile device. >> http://p.sf.net/sfu/Zoho >> _______________________________________________ >> Vector-agg-general mailing list >> Vec...@li... >> https://lists.sourceforge.net/lists/listinfo/vector-agg-general >> >> >> >> ------------------------------------------------------------------------------ >> Comprehensive Server Monitoring with Site24x7. >> Monitor 10 servers for $9/Month. >> Get alerted through email, SMS, voice calls or mobile push notifications. >> Take corrective actions from your mobile device. >> http://p.sf.net/sfu/Zoho >> >> >> >> _______________________________________________ >> Vector-agg-general mailing list >> Vec...@li... >> https://lists.sourceforge.net/lists/listinfo/vector-agg-general >> >> >> >> -- >> Michael Droettboom >> Science Software Branch >> Space Telescope Science Institute >> >> http://www.droettboom.com >> >> >> ------------------------------------------------------------------------------ >> >> _______________________________________________ >> Vector-agg-general mailing list >> Vec...@li... >> https://lists.sourceforge.net/lists/listinfo/vector-agg-general >> > ------------------------------------------------------------------------------ > _______________________________________________ > Vector-agg-general mailing list > Vec...@li... > https://lists.sourceforge.net/lists/listinfo/vector-agg-general -- Michael Droettboom Science Software Branch Space Telescope Science Institute http://www.droettboom.com |
