When using glFogf(GL_FOG_START, fogStart) and glFogf(GL_FOG_END, fogEnd), what happens? Does the fog go from 100% visibility at fogStart to 0% visibility at fogEnd? Or something else? What about after fogEnd? Cheers, Jeroen

Fog start is the starting z value of the fog, for z
I think, but i''m not sure, that all the depth''s further than GL_FOG_END are set to the amount of fog at GL_FOG_END..

On my PC the END and START settings seem not to affect anything at all.
I use fog per Poly, that may be it, I''m not sure.

Marty

Here''s some light reading to explain it to you fully.
http://www.sgi.com/software/opengl/advanced97/notes/node122.html

fog start and end only effect linear fog, not exponential or exponential squared fog, it''s the reverse for fog density.

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