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I am rendering in view-port mode using cycles with GPU rendering but the problem is not there:

But when I am rendering a final render, it calculates everything and after some time, it gives this empty result. Why?

enter image description here

enter image description here

When I am rendering a big scene, it calculates everything and says that there is not enough memory on GPU. But I have 2GB of GPU memory.

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    $\begingroup$ That usually means you are out of memory. 2GB can get eaten up quickly, especially with lots of textures and geometry. $\endgroup$
    – gandalf3
    Commented Sep 21, 2014 at 17:47
  • $\begingroup$ please answer my first question ? $\endgroup$
    – Samir
    Commented Sep 21, 2014 at 17:48
  • $\begingroup$ That is my answer to your first question $\endgroup$
    – gandalf3
    Commented Sep 21, 2014 at 17:54
  • $\begingroup$ Here is the blend file drive.google.com/file/d/0B9FnFhTHyZQvNnV2ckxTdzh3anM/… $\endgroup$
    – Samir
    Commented Sep 21, 2014 at 19:06
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    $\begingroup$ @Samir gandalf3 Is correct, 2GB of can be used very fast depending on the size of your textures, and other things on the scene, plus the usage of your own monitor screen if you have only one GPU. $\endgroup$
    – user1853
    Commented Sep 21, 2014 at 19:29

1 Answer 1

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The reason you don't see anything when you render is because your **Active Camera** is set to something different than the camera (in this case is set as the Area light).

Select your camera, make it active and your scene will render correctly.

You can do this two different ways:

Selecting the camera in the scene section of the properties window.

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Or selecting your camera in the 3D viewport and pressing CtrlNumpad 0 (or on the view menu->Cameras->Select Active object as Camera)

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