Re: [PyOpenGL-Users] Flickering at the edge of quads (2d map tiles)

[Reto S. <rsp...@no...>]

Hello,

Do you maybe have 2 quads overlaying? (example one @ high 1.0 other @ high 
1.1). This sometimes creates a "flickering" effect. In this case OpenGL is 
not able to determine which object is closer because is has only a limited 
amount for zbuffer (256values?).

You could try to glDisable(GL_DEPTH_TEST) for a test. If the problem does not 
occur anymore, you mabe have a to large rendering depth (bad example 
gluPerspective(60, 1.3, 10., 10000000.0)).

I hope this helps


Reto

On Sunday 02 May 2004 21.52, Eric Burgess wrote:
> I'm using textured quads as map tiles in a 2D top-view game.  I get
> "flickering" at the right and bottom edges of the tiles.  Depending on
> how far in/out the map is zoomed, the effect is better or worse.  I
> changed the texture coordinates from 1.0 to 0.98 in those vertices, and
> it helped a little, but not much.  I'm sure there's a better
> solution...can anyone enlighten me?
>
> Right now I'm using GL_NEAREST_MIPMAP_LINEAR for the minifying filter,
> but I've tried the others too and I still have the problem.
>
>
>
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Reto Spoerri
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