If I switch fog to 1 (fog_color),all objects who is have shader becoming completely black or without texture,why this happening, that I doing wrong?

Code

without fog


with fog


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GeForce 5500 FX 256 mb
Win XP SP2

Please dont spam the bug forum, its for bugs only. When you want to learn how to do fog and its not covered in the tutorial, then please ask in the shader forum. Im no shader expert but you could just check out the standard Gamestudio shaders for learning how fog is done, I believe they use a "DoFog" function from the shader library:

Out.Fog = DoFog(In.Pos);

Thank you for understanding.

Now I understand, so if I want apply fog to entity i must change shader code, I thought that this is an bug.
Spirit thanks for the explanation