after working for a while with blender 2.65a some textures get grainy when rendering it.
I´ve no Idea what it could be and hope somebody here can help me.
Thank you for your quick reply,
but I can´t remove all the doubles because I created every single cube as a new object. Could it be that?
If I follow your advice with the ‘‘grainy’’ cube it changes nothing.
I cannot remove the doubles of all cubes because every cube is a single object and i can just edit once a time.
But even if i could remove all the doubles, i couldn’t move a single cube anymore, because after removing the doubles they stick together.
But why does this problem come up? How can I prevent it from coming up?
PS: How i said i created every cube as a single object in object mode or duplicated it from another cube, could this cause that problem?
Upload your blend file to http://www.pasteall.org/blend/
Ensure you have packed all your textures in your blend file first using the File / External Data menu
Richard Marklew already told that - remove any duplicated objects.
You have 3 cubes taking in one spot where it renders with blackness around. That is against computer logics - it can’t decide which cube to render and you have what you have here. Just move faulty rendered cube - you’ll see another in there; move that and another one appears.
Remove duplicated objects - taking one 3d space part.