Some answers:

- The HDR shader is probably faster than the shade-C HDR because all newer standard shaders are heavily speed optimized. But we haven't made a direct fps comparison.

- There is no standard DOF shader yet.

- HDR is a 2D effect and unrelated to fog_color.

Thank you, but my question was another one (sorry for my bad english): I know I have 8.20, so I wish to know where is the link for 8.20.1 beta.

Thank you.

Sorry for offtopic, but how to use "fog_color" and HDR together?

- HDR is a 2D effect and unrelated to fog_color.

What you mean "unrelated"? Fact is, that when I set "fog_color" to "4" HDR doesn't work.

I dont know, thats what jcl said.

unrelated means, it can't possibly effect the hdr in anyway.
BTW fog_color 4 is generally black, try setting it to 1,1,1 instead of 0,0,0

Yeah, I've played with values, didn't really try to set it to zero, I played around 150 and 250, but only when I commented "fog_color = 4;" HDR worked great, other way, there was no effect.

HDR means "high definition rendering" and simulates increased brightness of bright parts of the image, such as sun or lights. When you put dark fog over your image you have obviously no bright parts and thus wont see much of HDR effects.

Look in the Wiki there is an explanation what HDR does and how it is used.

HDR means "high dynamic range".