skybox lit fractal landscape raytracing back

(L) [2013/06/20] [tby rouncer] [skybox lit fractal landscape raytracing] Wayback!

[IMG #1 Image]

The shader is compiled at runtime and is reconfigurable.
REQUIREMENTS- direct x 11, but preferably fermi standard at least, amd works fine.
CONTROLS
cursor keys move
right click - mouse look.
l + mouse up/down  luminosity.

Post your desktop resolution, video card specs and framerate [SMILEY :)]
[LINK http://public.justcloud.com/di8h4oq0zt.13775373]

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[IMG #1]:Not scraped: https://web.archive.org/web/20161005110659im_/http://img209.imageshack.us/img209/1969/v7q.png

(L) [2013/06/20] [tby jbikker] [skybox lit fractal landscape raytracing] Wayback!

Ah yes, I saw that one on GameDev. [SMILEY :)] May want to explain a bit, like you did on that forum.

(L) [2013/06/21] [tby rouncer] [skybox lit fractal landscape raytracing] Wayback!

Yeh sure.
I use a really small noise texture, no more than 64x64, that way I dont abuse the cache, and then I apply it at different frequencies and perturb x and z due to altitude to create cliffs.
The secret is keeping the texture small...   then the rays go through ALOT quicker.