OpenSubdiv/python/demo

This folder defines a small demo application that uses PyQt and newish version of PyOpenGL.

• main.py All calls to the OSD wrapper go here. This creates a QApplication and periodically pushes new VBO data into the renderer. (see below)
• renderer.py Defines the renderer; implements draw and init. All OpenGL calls are made in this file, and there's no dependency on Qt or OSD.
• canvas.py Inherits from QGLWidget and calls out to the renderer object (see above)
• shaders.py Implements a miniature FX format by extracting named strings from a file and pasting them together
• simple.glsl Specifies the GLSL shaders for the demo using the miniature FX format
• utility.py Some linear algebra stuff to make it easier to use Modern OpenGL
• window.py Inherits from QMainWindow, instances a canvas object
• __init__.py Exports main into the package namespace to make it easy to run the demo from setup.py