GPU vs CPU Baking


While some of the Substance Bakers only support CPU Baking, a number of more prominent baker are fully GPU optimized.


By default the Substance Baker Bridge is set to use GPU Rendering.


Usually, activating GPU Rendering is all that is needed, and the tool will take care of using the appropriate Backend (DXR or Optix).

However if you are running into issues for example baking with the modern DXR Libraries, you can force a specific Backend such as Optix instead.



Changing your Bake Settings


To change your Bake Preferences, open the Substance Automation Toolkit Settings, via the button in the Tool Configuration Section of the

Substance Baker Bridge:



A dialog will open, allowing you to configure your baking settings



GPU Raytracing is on by default.


DXR


Bakers casting many rays per pxiel (such as the Ambient Occlusion From Mesh) can take advantage of DXR.

Using this feature usually translate to an increases computation speed by a factor of 25 or more


The DXR-accelerated ray tracing will automatically be enabled ..

  • If GPU Raytracing is enabled

and if the system follows these requirements:




Optix


Older GPU Generations still can take advantage of GPU Raytracing, using OPTIX.


Optix will be used auomtatically


  • If GPU Raytracing is enabled
  • the GPU does not support DXR Raytracing


Bakers supporting GPU Rendering


The list below shows what bakers are capable of supporting GPU Rendering. Other bakers will automatically use CPU, even if GPU Raytracing is enabled.





<= Ignore Backfacing