#261 Tutorial01 fails (OpenGLContext callback error)

[Esa Varemo]

I am trying to get the first tutorial program to work, but it is not running correctly.

My program:

from OpenGLContext import testingcontext
BaseContext = testingcontext.getInteractive()

from OpenGL.GL import *
from OpenGL.arrays import vbo
from OpenGLContext.arrays import *
from OpenGL.GL import shaders

class TestContext( BaseContext ):
    """Creates a simple vertex shader..."""

    def OnInit(self):

        VERTEX_SHADER = shaders.compileShader("""
            #version 130
            void main() {
                gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;
            }
            """, GL_VERTEX_SHADER)

        FRAGMENT_SHADER = shaders.compileShader("""
            #version 130
            void main() {
                 gl_FragColor = vec4(0, 1, 0, 1);
            }""", GL_FRAGMENT_SHADER)

        self.shader = shaders.compileProgram(VERTEX_SHADER, FRAGMENT_SHADER)

        self.vbo = vbo.VBO(
            array( [
                [  0, 1, 0 ],
                [ -1,-1, 0 ],
                [  1,-1, 0 ],
                [  2,-1, 0 ],
                [  4,-1, 0 ],
                [  4, 1, 0 ],
                [  2,-1, 0 ],
                [  4, 1, 0 ],
                [  2, 1, 0 ],
            ],'f')
        )

    def render(self, mode):
        shaders.glUseProgram(self.shader)

        try:
            self.vbo.bind()
            try:
                glEnableClientState(GL_VERTEX_ARRAY)
                glVertexPointerf(self.vbo)

                glDrawArrays(GL_TRIANGLES, 0, 9)
            finally:
                self.vbo.unbind()
                glDisableClientState(GL_VERTERX_ARRAY)
        finally:
            shaders.glUseProgram(0)

if __name__ == "__main__":
    TestContext.ContextMainLoop()

This is the error I am getting if I run the program. The error repeats if I move my mouse on top of the small window that appears, so the app is alive, but not really functional. The window shows what was behind it when the app started, so no real picture.

Traceback (most recent call last):
  File "_ctypes/callbacks.c", line 314, in 'calling callback function'
  File "/usr/lib/python2.7/site-packages/OpenGLContext/events/glutevents.py", line 33, in glutOnMouseMove
    self.triggerPick()
  File "/usr/lib/python2.7/site-packages/OpenGLContext/context.py", line 590, in triggerPick
    self.OnDraw()
  File "/usr/lib/python2.7/site-packages/OpenGLContext/context.py", line 515, in OnDraw
    visibleChange = self.renderPasses( self )
  File "/usr/lib/python2.7/site-packages/OpenGLContext/passes/renderpass.py", line 866, in __call__
    return FLAT( context )
  File "/usr/lib/python2.7/site-packages/OpenGLContext/passes/flatcompat.py", line 298, in __call__
    self.setViewPlatform( vp )
  File "/usr/lib/python2.7/site-packages/OpenGLContext/passes/flatcompat.py", line 334, in setViewPlatform
    self.projection = vp.viewMatrix().astype('f')
  File "/usr/lib/python2.7/site-packages/OpenGLContext/move/viewplatform.py", line 158, in viewMatrix
    inverse=inverse,
  File "tmatrixaccel.pyx", line 55, in vrml_accelerate.tmatrixaccel.perspectiveMatrix (src/tmatrixaccel.c:1990)
TypeError: perspectiveMatrix() got an unexpected keyword argument 'inverse'

My versions according to pip (latest as of 8.11.13):

Python 2.7.5 (default, Oct  8 2013, 12:19:40) 
[GCC 4.8.1 20130603 (Red Hat 4.8.1-1)] on linux2

PyOpenGL                  - Standard OpenGL bindings for Python
  INSTALLED: 3.1.0a3 (latest)

OpenGLContext             - Demonstration and testing contexts for PyOpenGL/OpenGL-ctypes
  INSTALLED: 2.2.0a3 (latest)

PyOpenGL-accelerate       - Acceleration code for PyOpenGL
  INSTALLED: 3.1.0a3 (latest)

OpenGLContext-full        - Installs all of OpenGLContext with optional dependencies
  INSTALLED: 2.1.0a9 (latest)

numpy                     - NumPy: array processing for numbers, strings, records, and objects.
  INSTALLED: 1.8.0 (latest)

[Esa Varemo]

Actually this is all that is required to get the error is this:

from OpenGLContext import testingcontext
BaseContext = testingcontext.getInteractive()

class TestContext( BaseContext ):
    """Creates a simple vertex shader..."""

if __name__ == "__main__":
    TestContext.ContextMainLoop()