Re: [PyOpenGL-Users] processor specific result

[Charles M. <cm...@in...>]

Fwiw, I have seen this when GL_POLYGON_SMOOTH is enabled.

FvW wrote:
> Hello,
> 
> I have a python program that draws a map using OpenGL.
> On my old card, ASUS V7700pro (GeForce2 GTS), the result was good.
> I replaced this card with a ASUS V9520 (GeForce FX5200) because the fan
> was worn. This card does not display as expected. 
> 
> All area are drawn using GL_POLYGON. I can see the edges of the
> triangles as slightly darker lines. If the trangles are very small, that
> area looks darker than normal.
> 
> Can anyone tell me what the cause can be, and how to fix it?
> Python 2.3, pyopengl 2.0.1.08-5.1, nvidia 7174 drivers
> Debian 3.1(Sarge).
> 
> Thanks,
> Fulko
> 
> Some code that might be of interest.
> The vertices of the different trianges are shared (identical).
> 
> glClearColor(0,0,0,0)
> glClear (GL_COLOR_BUFFER_BIT |GL_DEPTH_BUFFER_BIT )
> glShadeModel(GL_SMOOTH)
> 
>     glLineWidth(1.0)
>     glColor3d(0.7,0.7,0.7)
>     for a in range(area):
>        v1,v2,v3=a
>        glBegin(GL_POLYGON)
>        glVertex2f(v1)
>        glVertex2f(v2)
>        glVertex2f(v3)
>        glEnd()
> 	
> 
> 
> 
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