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Norman3D's avatar
Norman3D
Expert Protege
8 years ago

Anisotropic filtering with Unreal on GearVR? How?

On this page it says regarding texture filtering:
  • Texture Filtering: Trilinear filtering is often a good idea for VR. It does have a performance cost, but it is worth it. Anisotropic filtering may be used as well, but keep it to a single anisotropic texture lookup per fragment.
Also according to this blog post anisotropic texture filtering is not supported on the S6.
My question is, how do I make sure that the game uses anisotropic filtering and how can I pick which textures use bilineal, which ones use trilinear and which ones use anisotropic (on compatible devices)?

Thanks!
Development
GearVR
Unreal Engine 4

3 Replies

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  • Norman3D's avatar
    Norman3D
    Expert Protege
    8 years ago

    imperativity said:

    Hi,

    See
    https://docs.unrealengine.com/latest/INT/Engine/Content/Types/Textures/Properties/index.html
    and https://docs.unrealengine.com/latest/INT/Engine/Content/Types/Textures/SupportAndSettings

    Let me know if you need any further assistance.



    Hi imperativity,
    didn't really have time to check this until now. As far as I understand it, anisotropic filtering is a scalability setting. The filtering type is specified in the texture group settings. However, anisotropic filtering is already set as a default. What puzzles me is that I still see bilinear filtering when playing on GearVR.
    Any idea how to force the Anisotropic x2 on mobile?
  • firagabird's avatar
    firagabird
    Adventurer
    8 years ago
    @Norman3D

    Not directly related to your query, but let me know how your use of anisotropic filtering affects the image quality & performance of your project. I've been refreshing myself on the topic, and it seems like AF is a must-have for any large, open environments with long, relatively flat surfaces (floors & walls).
  • Norman3D's avatar
    Norman3D
    Expert Protege
    8 years ago

    firagabird said:

    @Norman3D

    Not directly related to your query, but let me know how your use of anisotropic filtering affects the image quality & performance of your project. I've been refreshing myself on the topic, and it seems like AF is a must-have for any large, open environments with long, relatively flat surfaces (floors & walls).


    Will do! So far I’ve not been able to find anyone who has even tried to use it with Unreal and I can’t seem to get it to work for the life of me!