Re: [PyOpenGL-Users] glVertexAttribPointer(); loading platform-specific functions

[Joshua D. <joshuardavis@q.com>]

On 2009 Aug 16  , at 6:46 PM, Mike C. Fletcher wrote:

> Afraid I forgot to update the documentation when I split out the
> PyVRML97 project out.  I've updated it to point to the PyVRML97  
> project.


Thanks a lot; I've got it installed now. The shader_4.py tutorial now  
runs without raising any errors, but it doesn't seem to generate any  
fragments; it's just a white screen. (This seems to be exactly what  
happened with my own vertex attribute array code.) I've pasted its  
console output below.

I'm using PyOpenGL 3.0.1a3. Maybe this is relevant: My hardware is an  
ATI Radeon 9600, which is supposed to support OpenGL 2.0, but the  
output below suggests that it's providing only OpenGL 1.5. Is this a  
driver issue? I'm on Mac OS X 10.4.11, and Apple updates drivers  
automatically. OpenGL 1.5 should be enough for VBOs anyway. As an  
aside, elsewhere in my application I'm using framebuffer objects with  
no problem.

Josh

tcsh > python shader_4.py
INFO:OpenGL.acceleratesupport:OpenGL_accelerate module loaded
PREFERENCELIST ('pygame', 'wx', 'glut', 'tk')
INFO:OpenGL.extensions:OpenGL Version: 1.5 ATI-1.4.18
INFO:OpenGL.extensions:GL Extension GL_ARB_shader_objects available
INFO:OpenGL.extensions:Chose alternate: glCreateShaderObjectARB from  
glCreateShader, glCreateShaderObjectARB
INFO:OpenGL.extensions:Chose alternate: glShaderSourceARB from  
glShaderSource, glShaderSourceARB
INFO:OpenGL.extensions:Chose alternate: glCompileShaderARB from  
glCompileShader, glCompileShaderARB
INFO:OpenGL.extensions:Chose alternate: glGetObjectParameterivARB  
from glGetShaderiv, glGetObjectParameterivARB
INFO:OpenGL.extensions:Chose alternate: glCreateProgramObjectARB from  
glCreateProgram, glCreateProgramObjectARB
INFO:OpenGL.extensions:Chose alternate: glAttachObjectARB from  
glAttachShader, glAttachObjectARB
INFO:OpenGL.extensions:Chose alternate: glLinkProgramARB from  
glLinkProgram, glLinkProgramARB
INFO:OpenGL.extensions:Chose alternate: glValidateProgramARB from  
glValidateProgram, glValidateProgramARB
INFO:OpenGL.extensions:Chose alternate: glGetObjectParameterivARB  
from glGetProgramiv, glGetObjectParameterivARB
INFO:OpenGL.extensions:Chose alternate: glDeleteObjectARB from  
glDeleteShader, glDeleteObjectARB
INFO:OpenGL.extensions:GL Extension GL_ARB_vertex_shader available
INFO:OpenGL.extensions:Chose alternate: glGetAttribLocationARB from  
glGetAttribLocation, glGetAttribLocationARB
INFO:OpenGL.extensions:Chose alternate: glGetUniformLocationARB from  
glGetUniformLocation, glGetUniformLocationARB
INFO:OpenGL.extensions:GL Extension GL_ARB_occlusion_query available
INFO:OpenGL.extensions:GL Extension GL_ARB_point_parameters available
INFO:OpenGL.extensions:GL Extension GL_EXT_point_parameters unavailable
INFO:OpenGL.extensions:Chose alternate: glUseProgramObjectARB from  
glUseProgram, glUseProgramObjectARB
INFO:OpenGL.extensions:Chose alternate: glUniform1fARB from  
glUniform1f, glUniform1fARB
INFO:OpenGL.extensions:GL Extension GL_ARB_vertex_buffer_object  
available
INFO:OpenGL.extensions:GL Extension GL_ARB_vertex_program available
INFO:OpenGL.extensions:Chose alternate: glEnableVertexAttribArrayARB  
from glEnableVertexAttribArray, glEnableVertexAttribArrayARB
INFO:OpenGL.extensions:Chose alternate: glVertexAttribPointerARB from  
glVertexAttribPointer, glVertexAttribPointerARB
INFO:OpenGL.extensions:Chose alternate: glDisableVertexAttribArrayARB  
from glDisableVertexAttribArray, glDisableVertexAttribArrayARB