Depth values, not correct?

Actually that appears pretty correct, what ya need to keep in mind is that depth values are not Linear, they are Exponential so the farther stuff all ends up being a near 1.0, if ya want to make them more linear so you can see the more distant values you need to do some math on the original values to remap them.

Yea I know the exponential part, but I was just looking like this:

near plane is .1, far is 1,000. The tank barrel is like 2 units from the camera, the helicopter like 15 and the mountains like 900. So it appears that everything farther than 2 gets mapped to the same depth (even though I know it doesnt because it in rendered correctly.

Heh, I know what ya mean but after a surprisingly short distance the depth values really do just become that close that the are nearly the same value.. (.995 .9952 ....) If ya can do a fractional power and remap the curve some and you'll see that they are really just that close...

The curve is a bit sharp for my tastes, they really like to emphasize the close up stuff.

but thats pretty much what an unaltered depth map looks like.

Most samples that you see on the internet are depth maps with very small ranges, so that its easier to see the details and such.

Quote:

Original post by dpadam450 Yea I know the exponential part, but I was just looking like this: near plane is .1, far is 1,000. The tank barrel is like 2 units from the camera, the helicopter like 15 and the mountains like 900. So it appears that everything farther than 2 gets mapped to the same depth (even though I know it doesnt because it in rendered correctly.

I think you're underestimating just how non-linear the depth buffer is. Check out this article, especially the Z Calculator. With your near and far plane values, a distance of 1 corresponds to a depth of ~0.9, a distance of 2 is ~0.95.