memory error

[zuliban]

hi guys, im having a bad memory error whit displacement maps, im doing a scene where i used lot of displacement, then i made it bump and renders ok , but when i add even 1 texture whit displacement it creates error not enough memory the disp size is 4k resolution if i use less size it renders but i dont wanna loss quality, i have tried everything bitmap pager, dynamic memory 200mb,400mb,800mb and 1800mb ,in less words i wanna render a big displacement map but my memory cant handle it is there any way to do this? or im doing something wrong in the system settings , thanks for any answer

[Neilg]

Ive had issues with this, although not with displacement maps (just 16k wide diffuse maps )

Try splitting the surface into equal sections and using the corresponding area of the displacement map over each one. Another advantage of this is that if its a still and the surface goes pretty far into the distance, you can lower the resolution of the maps used further away.

[Clifton Santiago]

Are you using 2d or 3d displacement? 3d is often faster and less memory consumptive.

[zuliban]

thx for the answers im using a 2d disp tried it on 3d but loss lot of detail i think that will be my only option.

is there any way to render this in layers and composite? whitout lossing reflections and bounces?