Alternate Frame Rendering (mode)
Alternate Frame Rendering (AFR) is a rendering mode that is used in multi-GPU processes .
technology
In this mode, two or more graphics cards share the render load, in which the individual images are always calculated alternately.
Example:
- Card 1 renders all even images
- Card 2 renders all odd images
Since this method does not take into account the different complexity of the scenes to be rendered, AFR is very easy to implement and in principle all graphics chips can be operated together in AFR mode. This is why AFR can be selected as a mode for every multi-GPU technology (with the exception of Scan Line Interleave from 3dfx ).
Naming
AFR was named after the "Alternate Frame Rendering" technology from ATI Technologies , which was used in the Rage Fury Maxx . ATI was the first company to offer this mode and thus coined the name.
Advantages disadvantages
AFR is currently the fastest mode for multi-GPUs and is therefore very popular with all manufacturers because of its simplicity of implementation and speed.
However, it has the disadvantage that it cannot be used in applications that use render-to-texture due to its structure. Since a lot of computer games now use render-to-texture, this limits the application possibilities of AFR very much.
application
AFR is used in the following multi-GPU technologies: