Processing 1.0 - Processing Discourse - worse antialias on 1.0.6 than 0135, os x

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Index › Programming Questions & Help › OpenGL and 3D Libraries › worse antialias on 1.0.6 than 0135, os x - SOLVED

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worse antialias on 1.0.6 than 0135, os x - SOLVED (Read 3929 times)

fabio@todo

worse antialias on 1.0.6 than 0135, os x - SOLVED
Aug 21^st, 2009, 9:05am

Hi,
I have to keep on using Processing 0135 beta, because versions > 1.0 are doing a very different (and much worse) opengl antialias to me.
Here's an example:

Here's a quite trivial example code for this issue:

Code:


import processing.opengl.*;

void setup() {
  size(320,240,OPENGL);
  hint(ENABLE_OPENGL_4X_SMOOTH);
}

void draw() {
  background(255);
  stroke(0);
  fill(0);
  ellipse(50,50,30,30);
  ellipse(220,160,10,10);
  line(50,50,220,160);
  ellipse(50,180,20,20);
  ellipse(220,60,14,14);
  line(50,180,220,60);
}

I have a MacBook Pro, latest generation, but this problem occurred even on an Intel Mac Mini Core 2 Duo.
Any hints or ideas?

Thank you
Fabio

« Last Edit: Aug 24^th, 2009, 4:36am by fabio@todo »

Fabio Cionini&&TODO design&&www.todo.to.it

ben_hem

Re: worse antialias on 1.0.6 than 0135, mac os x
Reply #1 - Aug 21^st, 2009, 11:25am

I had a similar - but - opposite issue -- trying to disable the automatic 2X smoothing in 1.0.x. I finally solved it with:

Quote:

  size(750,550,OPENGL);
  hint(DISABLE_OPENGL_2X_SMOOTH);
  noSmooth();
  resize(750,550);

(Resize forces p5 to reinitialize the renderer using the new hint() parameters.) Of course in your case you'd keep ENABLE 2X or 4X, and smooth() rather than noSmooth()...

Shot in the dark, hope it helps. -- Ben

[edit: my problems are back for some users, so this might not help at all, actually.]

« Last Edit: Aug 22^nd, 2009, 1:20am by ben_hem »

fabio@todo YaBB Newbies Offline Posts: 6 Torino, Italy	Re: worse antialias on 1.0.6 than 0135, mac os x Reply #2 - Aug 24^th, 2009, 4:15am I found a way to solve it!! Thanks to your code, I tried to tinker it up a bit and finally came to a solution.
	Fabio Cionini&&TODO design&&www.todo.to.it

fabio@todo

Re: worse antialias on 1.0.6 than 0135, mac os x
Reply #3 - Aug 24^th, 2009, 4:32am

Here's the solution:
It seems that Processing 1.0.x is in fact forcing an opengl 2x antialias, which sucks, even if you specify the 4x or the smooth().
So the way to go is first to disable this 2x antialias, and then go with enabling 4x antialias or smooth() which is working even better. It didn't matter to use resize().

Code:

  
void setup() {
  size(320,240,OPENGL);
  hint(DISABLE_OPENGL_2X_SMOOTH);
  //hint(ENABLE_OPENGL_4X_SMOOTH); //after disabling the 2x this works fine
  smooth(); // this works even better than the 4x! super-smooth! ;)
}

See it for yourself:

Fabio Cionini&&TODO design&&www.todo.to.it

Cedric YaBB Moderator Offline Posts: 1838	Re: worse antialias on 1.0.6 than 0135, os x - SOLVED Reply #4 - Aug 24^th, 2009, 5:36am great, thx Fabio for letting us know. the last one really looks much better.
	twitter.com/CedricKiefer

jeffg

Re: worse antialias on 1.0.6 than 0135, os x - SOLVED
Reply #5 - Nov 4^th, 2009, 1:19pm

For those that are also concerned about performance, here are some tips I've learned.

Don't run these globally for your app by putting them in start();
Code:


smooth();  // I believe smooth() enables the two commands below
gl.glEnable (gl.GL_LINE_SMOOTH);
gl.glEnable( gl.GL_POLYGON_SMOOTH);

Instead put smooth() or the OpenGL equivalents around only the code that you want to be anti-aliased. Along with their closing noSmooth(); or gl.glDisable(....);

For example, I have 20,000 lines in my sketch, but I only need about 500 anti-aliased at any particular moment. So by doing the above method, I'm able to increase performance by 50%.

« Last Edit: Nov 5^th, 2009, 5:42am by jeffg »

jeffg Senior Member Offline Posts: 472	Re: worse antialias on 1.0.6 than 0135, os x - SOLVED Reply #6 - Nov 5^th, 2009, 5:40am fabio, have you put in a bug ticket for this? http://dev.processing.org/bugs

jeffg Senior Member Offline Posts: 472	Re: worse antialias on 1.0.6 than 0135, os x - SOLVED Reply #7 - Dec 15^th, 2009, 7:29pm I placed a bug report. http://dev.processing.org/bugs/show_bug.cgi?id=1413

vjfader YaBB Newbies Offline Posts: 34	Re: worse antialias on 1.0.6 than 0135, os x - SOLVED Reply #8 - Jan 7^th, 2010, 12:16pm I've tried using the codes described above. I'm having better luck changing the settings in Nvidia Control Panel (PC geForce GTX 260 card) and forcing the antialias to 4x or even 8x. Smooth edges on polygons

jeffg Senior Member Offline Posts: 472	Re: worse antialias on 1.0.6 than 0135, os x - SOLVED Reply #9 - Jan 7^th, 2010, 1:51pm I'd like to see someone implement an example of the Fast Prefiltered Antialiasing Technique for Lines Uses filters... Posted in this thread http://processing.org/discourse/yabb2/?num=1262710015

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