hi,

 i created NURBS object 3000x3000(Height x Width in pixcel ) and i want to see the result on 3000x3000,2000x2000,1000x1000, 500x500 .... area but the result must be the same looks, like just a zooming effect of object.

for that i set the all area's Ortho same (3000x3000) and Viewport as whole area. i get the expected result. but my problem is Speed, it take approxmitley same time to render image on area. i want fast speed wheen i render image with small area as drawing is small. i also try with Display List

grpawar