Vaclav Cermak wrote:
> 
> Hello,
> 
>   I'am using mesh2 for creating bush into terrain visualisation. I have 
> one mesh2 bush object and I need to place several tens of thousands of 
> instances into the scene. When I use mesh2 without textures, I have no 
> problem with memory. But when I try to assign some textures to mesh2 
> object, memory requirements are very high (several hundreds of MB). I 
> have nine textures predefined before and they are randomly assigned to 
> leaves in the bush.
> 
>   When I'am thinking about it, it looks like all nine textures are 
> copied for each instance of my mesh2, but I'am unable to see any reason 
> for it.
> 
>   Is anowhere some way how to solve this?
> 
> Thanks for any advices :)
> 
> Vaclav

This is what I use in PoseRay (http://user.txcyber.com/~sgalls/) to 
decrease the amount of memory required if several materials use the same 
map.

Declare the map once like this:

#declare map1=pigment{image_map{jpeg "your image.jpg" interpolate 2}}

then declare the material:

#declare mat1=texture{pigment{map1}}//add a finish if you want

then use the material in mesh2{}:

texture_list{
1,
texture{mat1}} //add more if you use more materials

This should allocate room for the map once.

good luck,

FlyerX

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