Processing 1.0 - Processing Discourse - [SOLVED] Performance issue with Patterns

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Index › Programming Questions & Help › Programs › [SOLVED] Performance issue with Patterns

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[SOLVED] Performance issue with Patterns (Read 1718 times)

koogy

Re: Performance issue with Patterns
Reply #15 - Feb 28^th, 2008, 11:43am

opengl display lists let you specify an object (anything from a point to a 3d model) which then gets loaded into the video card memory. you can then draw the same object just by calling displayList with its id and don't have to send all the vertices again. (like a macro or a subroutine i guess)

http://www.lighthouse3d.com/opengl/displaylists/index.php3?1

but, of course, this requires opengl...

thanks for the code.

i got the pimage_to_gltexture thing i mentioned yesterday working. turns out the problem was a missing gl.glEnable(GL.GL_TEXTURE_2D); (duh!)

mots

Re: Performance issue with Patterns
Reply #16 - Feb 28^th, 2008, 12:19pm

nice !

i think this display list looks really interesting. i could therefore go for the untextured opengl approach.
make one pattern a display list.

and then display it rotated, scaled, many time on screen. i would this way avoid texture resize problems. But i'll have to recode the rotate(rad); translate(x,y); and scale(scal); processing's functions. but i guess this is some what possible :)
will have a look at that tonight (european time).

is it possible to anti alias the border of a shape in openGL ?

mots Junior Member Offline Posts: 62	Re: Performance issue with Patterns Reply #17 - Feb 28^th, 2008, 12:32pm i think this might give me some hints http://processing.org/discourse/yabb_beta/YaBB.cgi?board=OpenGL;action=display;num=1204109694

koogy

Re: Performance issue with Patterns
Reply #18 - Feb 28^th, 2008, 1:59pm

antialiasing is possible (but fiddly) in opengl using blend functions (about half way down here):

http://fly.cc.fer.hr/~unreal/theredbook/chapter07.html

but on my linux box i can just set an environment variable before starting processing and the video card does it all for me using FSAA (i am lazy). windows probably has a control-panel app to do the same thing.

ftp://download.nvidia.com/XFree86/Linux-x86/1.0-8774/README/appendix-e.html

(that said, blend functions add a lot more possibilities to your app, smooth transitions and the like)

(this, btw, was what i did with all this stuff, a tiled opengl kaleidescope, kinda similar to what you're trying to do. but hexagonal:
http://home.clara.net/koogy/gleidescope/gleidescope.avi

probably won't work in a heavy dubstep setting though - too much pink...)

mots Junior Member Offline Posts: 62	Re: Performance issue with Patterns Reply #19 - Feb 28^th, 2008, 11:29pm thanks ! it now works like a charm ! you're my hero of the day !

mots Junior Member Offline Posts: 62	[SOLVED] Re: Performance issue with Patterns Reply #20 - Mar 18^th, 2008, 5:13pm using opengl display list helped somehow. running the sketch in exported mode helped a lot ! so i am now happy thanks for your help

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