Re: [PyOpenGL-Users] Shader problems

[Mike C. F. <mcf...@vr...>]

Tim Bocek wrote:
> Mike-
> Thanks for your comprehensive response!  I've managed to figure out 
> that I need to use the ARB extensions but that they do work 
> (downloaded a c example program that convinced myself of this).  Now I 
> gotta figure out whether there's an ARB-supporting computer I can demo 
> to my instructor with, if not it doesn't look too bad to support both 
> with a runtime switch ;)
from OpenGL.extensions import alternate
from OpenGL.GL import *
from OpenGL.GL.ARB.shader_objects import *
from OpenGL.GL.ARB.fragment_shader import *
from OpenGL.GL.ARB.vertex_shader import *

glCreateShader = alternate( 'glCreateShader', glCreateShader, 
glCreateShaderObjectARB )
glShaderSource = alternate( 'glShaderSource', glShaderSource, 
glShaderSourceARB)
glCompileShader = alternate( 'glCompileShader', glCompileShader, 
glCompileShaderARB)
glCreateProgram = alternate( 'glCreateProgram', glCreateProgram, 
glCreateProgramObjectARB)
glAttachShader = alternate( 'glAttachShader', 
glAttachShader,glAttachObjectARB )
glValidateProgram = alternate( 
'glValidateProgram',glValidateProgram,glValidateProgramARB )
glLinkProgram = alternate( 'glLinkProgram',glLinkProgram,glLinkProgramARB )
glDeleteShader = alternate( 'glDeleteShader', 
glDeleteShader,glDeleteObjectARB )
glUseProgram = alternate('glUseProgram',glUseProgram,glUseProgramObjectARB )
glGetProgramInfoLog = alternate( glGetProgramInfoLog, glGetInfoLogARB )

Should let you use the GL 2.0 versions and auto-fallback to the ARB 
versions when 2.0 isn't available.

HTH,
Mike

-- 
________________________________________________
  Mike C. Fletcher
  Designer, VR Plumber, Coder
  http://www.vrplumber.com
  http://blog.vrplumber.com