Search found 23 matches

by frederic
Sun Sep 29, 2013 2:30 pm
Forum: Demos
Topic: Unlucky Pony for SegaCD
Replies: 9
Views: 7494

Like 99% of BEX homebrew. Like 99% of homebrew. This game made me laugh. It is so weird. Mixing My Little Poney with rap is surreal humour. Is it made on purpose? When I see this , I guess you didn't make this game very seriously. Like djcouchycouch, I thought it was your first production, but I ha...
by frederic
Wed Sep 11, 2013 10:42 am
Forum: Tools
Topic: BlastEm - Yet another Genesis emulator
Replies: 63
Views: 15923

Congratulations! Now we have a second Megadrive emulator for Linux that is still maintained (the other one being DGen, but maybe there are others that I don't know of). It's still limited to x86-64, but at least it is not limited to Windows. It seems to be very fast, I tried to run 6 instances of it...
by frederic
Mon Sep 02, 2013 2:01 am
Forum: Mega/SegaCD
Topic: Problems with running a .bin with MESS
Replies: 7
Views: 4694

I am also interested in what the include instruction does. If you put 'include abc.asm' on top of some .asm, will the content of abc.asm be the one that is first executed when you compile and run .bin? "include" is a directive that is interpreted by the assembler (ie by asm68k), not by the Megadriv...
by frederic
Sat Aug 24, 2013 1:41 pm
Forum: Sound
Topic: interview with oerg866!
Replies: 9
Views: 5071

Nice interview. Thanks for the transcript, it's very useful for non-native english speakers like me. I'm glad you asked some details about the "3D chequerboard effect", which is the effect I like the most in the Overdrive demo.
by frederic
Sun Aug 18, 2013 4:05 pm
Forum: Demos
Topic: overdrive
Replies: 42
Views: 14061

Wow. When I see this, I consider quitting Megadrive development :-). I love the effect when there are several layers of squares, at about 4 minutes.
by frederic
Fri Jun 21, 2013 7:59 am
Forum: Demos
Topic: An Exercise in Compression
Replies: 11
Views: 5028

Well done. Did you consider using 1bpp instead of lowering the definition? When I watch this video in 1bpp I find it's better to lose on the colors rather than sharpness. I don't know if it could fit in 4MB, though.
by frederic
Tue Jun 11, 2013 7:03 pm
Forum: Tools
Topic: Using ImageMagick
Replies: 39
Views: 11718

frederic , what different clustering algo instead of K-means can be used? And may be use another tile representation for clustering? Algorithm::Cluster provides several algorithms (k-means, k-median, k-medoids...). I tried k-median and it gave better results in some cases. You can try to play with ...
by frederic
Mon Jun 10, 2013 8:33 pm
Forum: Tools
Topic: Retro Graphics Toolkit
Replies: 117
Views: 36758

Line 296: $image->Remap(image => $colorsimage); Oh, sorry. You're right. I looked at it again and did not see this. The images are quite different (worse, I'd say) with this bug corrected. I'll do some tests to see what to do (to transform the bug into a feature or to correct it and change other th...
by frederic
Mon Jun 10, 2013 8:21 pm
Forum: Tools
Topic: Retro Graphics Toolkit
Replies: 117
Views: 36758

Your bug. You must turn off dither explicitly. From ImageMagick's documentation : dither=>{True, False} In my script, insert this just before Quantize() or Remap() is called: if ($options{dither}) { print "This is a true value\n"; } else { print "This is a false value\n"; } You'll see that Quantize...
by frederic
Mon Jun 10, 2013 8:08 pm
Forum: Tools
Topic: Retro Graphics Toolkit
Replies: 117
Views: 36758

Because Remap function of ImageMagick used dither by defaut even if dither option not set. It is bug of version by frederic . It's not a bug. The "dither" argument is passed to imagemagick's functions with a false value, to disable dithering (see this ). When you enable dithering, the script is muc...
by frederic
Mon Jun 10, 2013 8:05 pm
Forum: Tools
Topic: Retro Graphics Toolkit
Replies: 117
Views: 36758

True, Ti_. r57shell's algorithm seems to be better on some images (drawings with big area of flat colors). See the comparison with the picture you just gave.
by frederic
Mon Jun 10, 2013 7:46 pm
Forum: Tools
Topic: Retro Graphics Toolkit
Replies: 117
Views: 36758

Ti_ wrote:If dithered disabled, why this image looks dithered?
It seems that my algorithm (a series of quantization/remapping applied to the whole picture, then to small parts, then to tiles) induces dithering, though no explicit dithering algorithm is applied.
by frederic
Mon Jun 10, 2013 7:13 pm
Forum: Tools
Topic: Retro Graphics Toolkit
Replies: 117
Views: 36758

My version works in about 10 seconds, much faster than version by frederic . Indeed it is a lot faster. But the results are not as good with some images. For example, below, the first row of images comes from your script (from left to right: dither=0, dither=1, dither=2). The bottom image comes fro...
by frederic
Mon Jun 10, 2013 6:32 pm
Forum: Tools
Topic: Retro Graphics Toolkit
Replies: 117
Views: 36758

Goto tilemap actions->Dither tilemap as image Then pick how you want the tilemap dithered. So it was me. Thanks. I've tried to download activeperl, strawberry perl, imagemagick plugin, tried to reinstall image magick with 2 options: install enviroment and install for active perl. Tried to use some ...
by frederic
Mon Jun 10, 2013 2:25 am
Forum: Tools
Topic: Retro Graphics Toolkit
Replies: 117
Views: 36758

Could you please explain why you can't get it to work so that I can fix it for you? Sure. I just downloaded the last version just to be sure (https://github.com/ComputerNerd/Retro-Graphics-Toolkit/archive/master.zip). I run it, then I chose File > Import image to tilemap . Then I chose Palette Acti...