[vtk-developers] GLSL shader/shaderprogram etc

[John Biddiscombe]

A while back, I made some changes to my copies of
vtkShaderProgram.cxx ,vtkShaderProgram.h ,vtkGLSLShader.cxx 
,vtkGLSLShader.h ,vtkGLSLShaderProgram.cxx

so that they will function without OpenGL2 but instead use Gl Extensions 
(vertex program, shader program etc etc). I've been sitting on these 
changes for some time in the hope I'd get time to clean them and create 
some "proxy" or other delegate type object to make them a bit less messy 
- they are full of if (opengl2supported) then {...} otherwise {...}
but the functionality is essentially the same for either case.

I'm going to check these changes in, because I don't think I'm ever 
going to find time to do a better job of it.

It primarily lets on do GLSL stuff on some laptops and desktops that 
don't have gl2 drivers.

any objections or comments, please send...

JB



-- 
John Biddiscombe,                            email:biddisco @ cscs.ch
http://www.cscs.ch/about/BJohn.php
CSCS, Swiss National Supercomputing Centre  | Tel:  +41 (91) 610.82.07
Via Cantonale, 6928 Manno, Switzerland      | Fax:  +41 (91) 610.82.82