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shaders in processing (Read 17575 times)

JohnG

Re: shaders in processing
Reply #15 - Feb 29^th, 2008, 7:18pm

It's been a long time since I wrote this, but I've updated it for the latest version of Processing, and it seems to work. Don't ask me to explain it all though, I'm not sure I can currently. It also has a specular map as well as dump mapping I think.
Also I think I may have a couple of bugs which end up cancelling each other out in it, so if things go weird when you try to use it, I'm sorry.

But here's a zip of the sketch including data files:
http://www.hardcorepawn.com/BumpMap.zip

You can see it online here:
http://www.hardcorepawn.com/Shiny/

elout

Re: shaders in processing
Reply #16 - Mar 1^st, 2008, 10:21pm

Wow thats great JohnG.

I recently started working on creating normalmaps in my 3D modeller and for another texture generator i`m working on.
And was looking around how i could created/show normalmapping and displacement mapping.

My modeller, experiment
http://www.xs4all.nl/~elout/sculptpaint/

(Recent sculptypaint build with normal map creation test.)
http://www.xs4all.nl/~elout/9feb/

Some normalmaps and its textures I created rather quick and tried with your demo;

And

V Senior Member Offline Posts: 430 portugal	Re: shaders in processing Reply #17 - Mar 2^nd, 2008, 2:06pm hey john, thats good. ive been using your GLSL to shaders aswell, hope you dont mind. i have one question. have you been able to work with Cg shaders in processing ?
	Victor Martins \| www.pixelnerve.com/v

JohnG Ex Member	Re: shaders in processing Reply #18 - Mar 2^nd, 2008, 2:45pm I have no problem with people using it, I wouldn't have posted all the code here otherwise. As for CG, if you check about halfway down page 1 of this thread, ac has written a CG version.

Re: shaders in processing
Reply #19 - Mar 2^nd, 2008, 8:03pm

yea ive tried ac's cg class but it keeps giving me an error
on initialization.

error is something like:

"cant find procedure entry cgCreateEffect in dynamic library cg.dll"

any idea what this could be ?

ive downloaded cg.dll and jar and placed them in the opengl folder in \processing

EDIT:
java.lang.UnsatisfiedLinkError: C:\processing-0121\libraries\opengl\library\jogl_cg.dll: Impossível localizar o procedimento especificado (Not possible to locate specified procedure)
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary0(Unknown Source)
at java.lang.ClassLoader.loadLibrary(Unknown Source)
at java.lang.Runtime.loadLibrary0(Unknown Source)
at java.lang.System.loadLibrary(Unknown Source)
at com.sun.opengl.impl.NativeLibLoader$DefaultAction.loadLibrary(NativeLibLoader.ja
va:78)

Victor Martins | www.pixelnerve.com/v

Re: shaders in processing
Reply #20 - Mar 2^nd, 2008, 10:30pm

I tried again the cgtest0 example (I didn't run it in a long time):

http://users.design.ucla.edu/%7Eacolubri/shaders/processing/cgtest0.applet/cgtest0.source.zip

locally on my machine, and works fine with v0135. Do you have the CG toolkit properly installed on your machine? I'm using CG v1.5:

http://developer.nvidia.com/object/cg-toolkit-15.html

Also, from the error message you posted seems that you are using processing v0121. Probably the CG support in that version wasn't very good. I'd try upgrading to 0135.

Keep in mind that there is one thing that still doesn't work, which is CG shaders working in the online applets. GLSL shaders do work in the applets, however.

Re: shaders in processing
Reply #21 - Mar 2^nd, 2008, 10:56pm

ac,

the processing version is 135, i just keep using the same folder since 121 came out.

yes i installed cg toolkit aswell.

ok while checking the lib folder in processing ive noticed i had cg.dll and cgGL.dll in there aswell. that was what was causing the errors. i guess its old versions or not compatible dll versions.

works fine with your example.. thanks for the help ac.

Victor Martins | www.pixelnerve.com/v

acapulco Junior Member Offline Posts: 63	Re: shaders in processing Reply #22 - Mar 7^th, 2008, 5:39pm Hey. Very nice work JohnG. As soon as I have time I'll start exploring this new possibility of Processing. Keep up the good work! :]

onar3d YaBB Newbies Offline Posts: 32	Re: shaders in processing Reply #23 - Mar 19^th, 2009, 4:21pm Thank you JohnG, for a very concise and helpful example!

orgicus YaBB Newbies Offline Posts: 2	Re: shaders in processing Reply #24 - Dec 4^th, 2009, 6:54am I'm playing with the GLSL class posted here. How do you change a shader parameter ?
	_________________________________________X

eskimoblood

Re: shaders in processing
Reply #25 - Jan 11^th, 2010, 2:09pm

I'm using the GLSLGraphics lib but the code should be the same:
Code:


PGraphicsOpenGL pgl = (PGraphicsOpenGL) g; 
GL gl = pgl.beginGL(); 
int loc = shader.getUniformLocation("theNameOfYourUniformVar");
gl.glUniform1fARB(loc, theValueOfYourUnform); // note that there are different methodes for the different var types
pgl.endGL();

Andreas Köberle {eskimoblood}

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