Warp wrote:
> Orchid XP v8 <voi### [at] devnull> wrote:
>> Also, how about random number generation? Is this "easy" to do on a GPU?
> 
>   Even if pixel shaders didn't have some RNG available (I don't know if
> they have), a simple linear congruential generator should be rather
> trivial to implement.
> 
>   (OTOH that means that the LCG would have to store the seed somewhere
> so that the next time the shader is called it can use it. Again, I don't
> know if that's possible. There could well be parallelism problems with
> that.)

Yeah, that's going to be the fun part - getting each PRNG to produe a 
different stream. Maybe it could be seeded from pixel coordinates or 
something...

>> Could you do something like rendering millions of tiny semi-transparent 
>> polygons of roughly 1-pixel size?
> 
>   Why would you want to do that?

The idea being to scatter polygons around using a geometry shader, 
rather than trying to implement the IFS as a pixel shader. I don't know 
if it would work well though.

-- 
http://blog.orphi.me.uk/
http://www.zazzle.com/MathematicalOrchid*

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