Rendering Very Large Images

This page provides a tutorial on rendering large images with V-Ray.

 

Overview

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Rendering very large images can be memory intensive as very large resolutions require more memory be added to the scene's own memory needs. This tutorial explains how to set up V-Ray to render very large images directly to disk, optimizing memory efficiency. By writing the rendering image file directly to disk, the memory buffer is disabled, saving on overall memory use. This is very advantageous for machines with limited memory.

 

 

Setting Up to Render Large Images

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1. With the Render output selected,  set the desired resolution of the image.

2.  In the V-Ray Main settings panel, switch the image sampler Type to Adaptive.

 

3. Render the image by going to V-Ray > Render with V-Ray, and ensure that Choose output image is checked. Select any Render Pass Group, if any, if you wish to render it.

 

Optional step: The default image format to be used when rendering with V-Ray can be set from System > Preferences > Rendering > V-Ray Renderer > V-Ray Production Rendering > Default image format. Setting the default to tiled 16 or 32-bit EXR will automatically choose the format for rendering large resolutions with preview only. In this case, you can skip step 4 of this tutorial.

4. When prompted for the file type and location, set the file type to OpenEXR Tiled Half 16-bit or Float 32-bit. Note that this only works with tiled EXR files and that during the render only a preview of the image will be displayed to optimize memory usage.