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VR Single-Pass Stereo & Image Effects

Discussion in '5.4 Beta' started by JonDadley, Mar 27, 2016.

  1. JonDadley


    Sep 2, 2013
    In the current betas there is a known issue where image effects do not work with single-pass rendering. After talking with some other devs, there was some discussion that it may not be possible to make all image effects work with single-pass stereo without significantly re-writing them.

    Could someone from Unity let us know if there are plans for a general fix for the issue, what that will cover and what beta number it's likely to show up in? That'd be really useful :)
  2. Kaspar-Daugaard


    Unity Technologies

    Jan 3, 2011
    Do you have some examples of it not working? Generally what's required is that you use the TRANSFORM_TEX() macro when sampling from a stereo texture.

    For example, if you have a sampler2D SourceTex; you will also need a float4 SourceTex_ST; and you should transform the texture coords like this: TRANSFORM_TEX(v.texcoord, SourceTex).

    We're still fixing single-pass stereo issues, but it's unlikely that all image effects will work out of the box, because we use two textures packed into one.
    behram likes this.