The settings are pretty much the same but GI Next will use your Hardware. Final Gather is out and not supported for Hardware acceleration and GI Next is in.
Next, we need to change are global Illumination settings. Although I have seen speed increases with the K series that’s in my laptop. Best results are with the new P series cards. This is because it uses NVidia’s CUDA technology. As you can probably imaging NVidia Mental Ray is best supported by a NVidia card. Fist make sure you have selected you Graphics card at the bottom of Processing tab in the Mental Ray setup. Just a couple of things that you need to know in order for it to work. The good news is that in 2018 we now have Hardware acceleration for Mental Ray. Nevertheless, most materials are compatible and can be rendered with mental ray 3.13 out of the box.Mental Ray is no longer shipped with 3ds Max 2018, but can be downloaded from the NVidia Website ( Read about it in my previous post). Note: mental ray 3.13 supports MDL v1.1 and the vMaterials are based on MDL v1.2. For example, the clarity parameter in the gem materials should be multiplied by 100 if the linear working unit is centimeter. You can either change the scene scale to meter or you can convert the scene unit dependent parameters. Some materials are dependent on the scene unit and assume meter by default. To find out how to apply the MDL materials in your scene, check our post on Using MDL with mental ray for Maya 2016. To use the vMaterials for rendering with mental ray for Maya 2016, you have to add the following definition to your Maya.env file (on Windows): MI_MDL_PATH=C:\ProgramData\NVIDIA Corporation\mdl C:\Users\\Documents\mdl vMaterials can be rendered with mental ray 3.13 as well as with any Iray plugin, such as NVIDIA® Iray® for Maya. You can register for a free download here. The vMaterials are a collection of MDL materials designed for physically based rendering, representing real world materials.
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