Beginner's problem, need help!

Original Post

Nov 17, 2004 at 10:14 AM

Hello! I would like to draw triangles (with the same Y - up direction - value), which ones may intersect each other. When I draw it with alpha value, I see darker blobs. How can I resolve it? screenshot:: http://delfin.unideb.hu/~fazekaim/problem.jpg I have a plane quad (in red colors), and above the quad a lot of randomly generated triangles with the same Y(up direction) value. Thanks.

fazekaim

Author

fazekaim

Nov 17, 2004 at 10:20 AM

I played with glEnable( GL_CULL_FACE) and the amount of darker blobs decreased.

stroma

Nov 17, 2004 at 10:34 AM

i think sone triangles are seen together and makes darker area. i mean the color of them mixing. gray+gray = more gray(darker)
i am not sure; you may use depth buffer to eliminate triangles that makes this.
sorry for bad eng.

fazekaim

Author

fazekaim

Nov 17, 2004 at 10:43 AM

I used the depth buffer:

glDepthFunc( GL_LESS );

I tried all glDepthFunc parameters. But the only result is, that all triangles diappeared.

This is the method, that you think of?

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