Very impressive!

6000 trees, looks very impressive.

You and your damn pretty pictures (*envy* :P).

Not sure about your problem. You raymarch the shadowmap, no ? Can you elaborate about the troubles ?

10/10 was not lying, plenty of trees in this episode.

You and your damn pretty pictures (*envy* ).

Not sure about your problem. You raymarch the shadowmap, no ? Can you elaborate about the troubles ?

Ty all!

The volumetric pass is in a fullscreen quad. So I raymarch the vector between the world space position in the scene and the near clip position ( or "world space position" of the current pixel ).

But the world space position in the scene is really far away, the ray is very large. I have a fixed number of marches/steps, so this means that the raymarching may not capture some important areas. Example: (Beware! My paint skills!)

In this case the ray is too long, which means the renderer wont get enough data to make a nice volumetric scattering at the window. One thing that I could do in this case is to have more samples in the beginning. Another problem is when two rays do not have the same length:

So as it said, there is an inconsistency between the sampling pattern (so many fancy words!), this can create ugly artifacts. I could base the number of samples on the length, but have not tried it yet.

I'm really new to this area, so there's probably much simpler ways of doing this.

Good job, ????, I approve. You might even get promoted to ?? at this rate!

Promoted I am!

what was bird talking about, 'pretty pictures'...hmmm

:lol: Who cares about beauty in technical sketches.

@Migi, thanks for the explanation. Now I understand the problem ... but I can't help you there much, sorry. If IIRC the stuff I read about such effects, one way to improve performance is to do it in lower res (can't judge from the shader you recently showed if you already do). GPU Pro 5 has a chapter or two about scattering (code and demo can be downloaded for the epipolar thingy, which is quite stunning).