Hi PaQ,

> (Looks like 6000*6000 require 103 Mb, at least that's what psp tell me ... )

Looks like PSP would use 24-bit pixels for that case.

The video card generally uses 32-bit pixels for color, so slightly more than that for just the color but then for a 3D viewport you also need a depth buffer as well, so double that again.

So you're looking at something like 6000*6000*8 bytes = 275MB.

So that target definitely won't fit within a 256MB card, you would need a 512MB card to get to that level.

- Michael