Stifu, have you actually tried the "Fast Pointerless Image Pocessing" method on CodeProject? I'm implementing it right now and praying there are no issues. If I can't do fast pixel drawing it's a showstopper for sure. I want this to work so badly...
-L Stifu wrote: > > Mono being faster than .NET with SetPixel must have been on a particular > case... I have found a huge performance issue with Mono and Get/SetPixel() > in a particular situation, making Mono crawl... Something instantaneous > with .NET can easily take 10 seconds with Mono (the perf hit is > exponential, too). > I couldn't make a reduced test case for that one either yet... > > But hey, that aside, I've been happy with Mono too. :p > > > Dan Shryock wrote: >> >> On Fri, Mar 20, 2009 at 8:40 AM, LKeene <[email protected]> wrote: >>> >>> I actually intend to use it to draw to a memory bitmap pixel-by-pixel, >>> rather >>> than calling SetPixel() each time. Apparently that would be extremely >>> slow >>> form what I've read online. The only alternative to Set/GetPixel() seems >>> to >>> be declaring an unsafe block and using LockBits(). I'll try to test the >>> mono >>> LockBits() implementation today, but assuming that there is indeed a >>> bug, >>> does anyone have any other ideas of how to accomplish drawing to a >>> memory >>> Bitmap other than SetPixel()? I have a precomputed "Color[,]" that >>> specifies >>> the pixels colors. >> >> In a recent project, I had no troubles working with lockbits on Mono >> 1.9 on linux. >> In the past, using some older version of Mono (probably 1.1.x or 1.2.x) I >> had >> encountered few troubles working with lockbits but they have been >> resolved in >> newer Mono releases. >> >> Another thing that I noticed is that calling SetPixel repeatedly on >> Microsoft's >> .NET is much slower than calling SetPixel repeatedly on Mono (though >> lockbits >> was still faster on both). >> >> HTH >> >> Dan >> _______________________________________________ >> Mono-list maillist - [email protected] >> http://lists.ximian.com/mailman/listinfo/mono-list >> >> > > -- View this message in context: http://www.nabble.com/LockBits%28%29-on-Mono-2.2--tp22611389p22625163.html Sent from the Mono - General mailing list archive at Nabble.com. _______________________________________________ Mono-list maillist - [email protected] http://lists.ximian.com/mailman/listinfo/mono-list
