Draw only specified pixels and not whole scene?

Question

Is it possible to ask povray to draw only a portion of a scene rather than a whole scene? So specify a set of pixels to be drawn?

Answer 1

Just click and drag on the render output window. It will then ask if you want to render only that portion for the next render.

Answer 2

Use the Start_Column, End_Column, Start_Row and End_Row command-line options. For instance, to render only the bottom right quarter of a 320x240px image:

povray +W320 +H240 Start_Column=160 End_Column=320 Start_Row=120 End_Row=240 scene.pov