I would like to use a single vertex buffer object to contain information
about vertices, normals, and colors. According to the GL spec for
glNormalPointer, glVertexPointer, and glColorPointer:
If a non-zero named buffer object is bound to the
GL_ARRAY_BUFFER target
(see glBindBuffer) while a normal/vertex/color array is
specified, pointer is treated as a byte offset into the buffer
object's data store.
Also, the buffer object binding (GL_ARRAY_BUFFER_BINDING) is
saved as normal vertex array
client-side state (GL_NORMAL_ARRAY_BUFFER_BINDING).
Is there any way to do this currently? PyOpenGL seems to expect an actual
sequence for the pointer value.
If there isn't a way of doing this already, I'll poke around and see if I
can't make a patch to support this alternative behavior in my spare time.
Any suggestions about how to go about this patch for PyOpenGL? (I'm fairly
swift with Python, minimal experience with ctypes, and moderate OpenGL
experience.)
--Jason
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