2011/10/7 <thorsten.i.r...@jyu.fi>
> But if you know a fast way of rendering
> the cloud shadows - please just let me know.
>
There is a way to do that by a technique called projective texture mapping.
We need a texture that represents the current cloud situation as seen from
the sun.
For simplicity reasons we could use a tileable pre-rendered cloud texture,
animate it (using texture wrapping) with the speed and direction of the wind
and project it onto the scenery.
For more details see:
http://www.ozone3d.net/tutorials/glsl_texturing_p08.php
or
http://www.opengl.org/resources/code/samples/mjktips/projtex/index.html
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