1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
|
'''OpenGL extension NV.transform_feedback2
This module customises the behaviour of the
OpenGL.raw.GL.NV.transform_feedback2 to provide a more
Python-friendly API
Overview (from the spec)
The NV_transform_feedback and EXT_transform_feedback extensions allow
applications to capture primitives to one or more buffer objects when
transformed by the GL. This extension provides a few additional
capabilities to these extensions, making transform feedback mode
more useful.
First, it provides transform feedback objects encapsulating transform
feedback-related state, allowing applications to replace the entire
transform feedback configuration in a single bind call. Second, it
provides the ability to pause and resume transform feedback operations.
When transform feedback is paused, applications may render without
transform feedback or may use transform feedback with different state and
a different transform feedback object. When transform feedback is
resumed, additional primitives are captured and appended to previously
captured primitives for the object.
Additionally, this extension provides the ability to draw primitives
captured in transform feedback mode without querying the captured
primitive count. The command DrawTransformFeedbackNV() is equivalent to
glDrawArrays(<mode>, 0, <count>), where <count> is the number of vertices
captured to buffer objects during the last transform feedback capture
operation on the transform feedback object used. This draw operation only
provides a vertex count -- it does not automatically set up vertex array
state or vertex buffer object bindings, which must be done separately by
the application.
The official definition of this extension is available here:
http://www.opengl.org/registry/specs/NV/transform_feedback2.txt
'''
from OpenGL import platform, constants, constant, arrays
from OpenGL import extensions, wrapper
from OpenGL.GL import glget
import ctypes
from OpenGL.raw.GL.NV.transform_feedback2 import *
### END AUTOGENERATED SECTION
|
