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Looking for a shader example

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Agnes

Looking for a shader example

I am looking for a simple JOGL shader example that shows the essentials of pixel and vertex shading - for example, one triangle with shaders that simply copy the values from the geometry. Such an example must exist, but I can't find it... Can anyone help?

Demoscene Passivist

Re: Looking for a shader example

Administrator

Maybe u should check out the turorial section in the jogamp wiki ? There are a couple of very basic setup tutorials that might fit ur description ...

For more advanced examples u may have a look at my blog @tumblr. It also features a very basic vertex shading example.

Hope this gets u started ... :)

Sven Gothel

Re: Looking for a shader example

Administrator

On 06/19/2012 07:59 AM, Demoscene Passivist [via jogamp] wrote:

> Maybe u should check out the turorial section in the jogamp wiki
> <http://jogamp.org/wiki/index.php/Jogl_Tutorial> ? There are a couple of very
> basic setup tutorials that might fit ur description ...
>
> For more advanced examples u may have a look at my blog @tumblr.
> <http://copypastaresearch.tumblr.com/> It also features a very basic vertex
> shading example
> <http://copypastaresearch.tumblr.com/post/1033237190/ported-another-glsl-routine-to-jogl2-this-time-a>.
>
>
> Hope this gets u started ... :)
>

A very detailed and documented demo if from Xerxes here:

<http://jogamp.org/git/?p=jogl-demos.git;a=blob;f=src/demos/es2/RawGL2ES2demo.java;hb=HEAD>

And our junit tests and demos ofc:

<http://jogamp.org/git/?p=jogl.git;a=tree;f=src/test/com/jogamp/opengl/test/junit/jogl/glsl;hb=HEAD>

<http://jogamp.org/git/?p=jogl.git;a=tree;f=src/test/com/jogamp/opengl/test/junit/jogl/demos/es2;hb=HEAD>

~Sven

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Xerxes Rånby

Re: Looking for a shader example

In reply to this post by Agnes

2012-06-19 06:55, Agnes [via jogamp] skrev:

I am looking for a simple JOGL shader example that shows the essentials of pixel and vertex shading - for example, one triangle with shaders that simply copy the values from the geometry. Such an example must exist, but I can't find it... Can anyone help?

Hi I created a really basic example, to help my own understanding, that displays a shaded triangle that you can try:
https://raw.github.com/xranby/jogl/master/src/test/com/jogamp/opengl/test/junit/jogl/demos/es2/RawGL2ES2demo.java

   wget http://jogamp.org/deployment/jogamp-current/archive/jogamp-all-platforms.7z
   7z x jogamp-all-platforms.7z
   cd jogamp-all-platforms
   wget https://raw.github.com/xranby/jogl/master/src/test/com/jogamp/opengl/test/junit/jogl/demos/es2/RawGL2ES2demo.java
   javac -cp jar/jogl.all.jar:jar/gluegen-rt.jar RawGL2ES2demo.java
   java -cp jar/jogl.all.jar:jar/gluegen-rt.jar:. RawGL2ES2demo

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Agnes

Re: Looking for a shader example

Thank you all for your help. The xranby example is perfect for me - both kinds of shader in one file, no IO or other fussiness.

Agnes

Re: Looking for a shader example

I have the sample running on my machine. There was one small issue: the GLSL compiler complained that the "#version" instruction had to be the first statement in the file - it obviously counted the #ifdef as a statement.

Chris

Re: Looking for a shader example

In reply to this post by Agnes

Take a look here,

it has all you need to get shaders up and working.

http://www.guyford.co.uk/showpage.php?id=50&page=How_to_setup_and_load_GLSL_Shaders_in_JOGL

gouessej

Re: Looking for a shader example

Administrator

Chris wrote

Take a look here,

it has all you need to get shaders up and working.

http://www.guyford.co.uk/showpage.php?id=50&page=How_to_setup_and_load_GLSL_Shaders_in_JOGL

It is an example relying on an obsolete version of JOGL and I already told you once to avoid posting that kind of example to avoid confusing beginners. Moreover, it is not more useful than existing examples on the official repository, lots of checks are missing in yours.

Julien Gouesse | Personal blog | Website