The parameters dialog of photorealistic views created using GPU NVIDIA and CPU technologies contains following controls:
Use current view size. When active, the option allows to set the generated image size. After activation, option Fix generation parameters on the toolbar automatically activates.
Fit to window. The option is enabled only when the Use current view size flag is set. When the option is active, image of the current size is fully displayed.
Size of the image is specified in pixels. The image of specified size will be generated completely, even if it does not fit the window. To generate images of the highest quality it is recommended to set the largest current view size.
Image quality. The option duplicates the drop-down list of settings from the toolbar. The only difference is the possibility to set the number of iterations manually. You need to select user quality and specify the number of iterations.
Reflection max depth. The option is important for generation of refractions and reflections.
All texture parameters are similar to the standard parameters of 3D view. More information about them can be found in Set 3D View Parameters section.
Luminance factor of environment. Allows to set luminance by adjusting the amount of light coming to objects.
Optimal parameters are set by default.