Astan Chee wrote:
Hi,
Im trying to do glGenLists while a program is running and it keeps
returning 0 and whenever I try to do a glCallList, it fails with a
'invalid value' error.
Is this a known issue? why would my program give valid glGenList while
being initialized but not while it is running?
IIRC, this can happen if you call glGenLists *before* you create any
windows (or perhaps more accurately, before an OpenGL context has been
created).
Im using wx to create a new pygame thread that uses pyopengl. This is
the glGenList snippet:
dlBody = glGenLists(1)
glNewList(dlBody,GL_COMPILE)
SphereT = gluNewQuadric()
gluSphere(SphereT, 0.5, 32, 32)
gluQuadricNormals(SphereT, GLU_SMOOTH)
gluQuadricDrawStyle(SphereT, GLU_FILL)
glEndList()
and here is how I init:
glShadeModel(GL_SMOOTH)
glClearColor(0.0, 0.0, 0.0, 0.0)
glClearDepth(1.0)
glEnable(GL_DEPTH_TEST)
glDepthFunc(GL_LEQUAL)
glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST)
glEnable (GL_LIGHT0)
glEnable (GL_LIGHTING)
glEnable(GL_TEXTURE_2D)
LightAmbient = ( (0., 0., 0., 0.,1.) )
glLightModelfv( GL_LIGHT_MODEL_AMBIENT, LightAmbient )
glEnable(GL_COLOR_MATERIAL)
glViewport(0, 0, width, height)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
gluPerspective(45, 1.0*width/height, 1.0, 10000.0)
glMatrixMode(GL_MODELVIEW)
glLoadIdentity()
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