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Caustics options not show in 3.1 final Trying to enable this. Every tutorials shows it up under lights, and object/shading. I am in Cycles. But still no option. Official release of blender 3.1.

Any help on what i am doing wrong or has it moved?

THank you gary

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  • $\begingroup$ I'm a bit puzzled by it myself. 3.1-alpha does have caustics and no extra configuration is needed for them to be used. However, the final release doesn't seem to have it. Files generated in 3.1-alpha with caustics open and render in 3.1 but without caustics. $\endgroup$
    – guioconnor
    Mar 11, 2022 at 10:50

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A build version that included caustics was D13533 submitted on December 18, and you can find it in the Blender Build archives.

Caustics did not make the cut for the official release of 3.1 according to the developer thread. You can follow it if you are interested in the progress of the feature:

https://developer.blender.org/D13533

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  • $\begingroup$ Indeed, thanks, the relevant comment is this, for those in a hurry developer.blender.org/D13533#381586 $\endgroup$
    – guioconnor
    Mar 11, 2022 at 17:26
  • $\begingroup$ Wait, it is not clear. Was it dropped or deferred to a future version? $\endgroup$
    – Damn Vegetables
    Mar 28, 2022 at 8:49
  • $\begingroup$ It has been added to Blender 3.2 (official). $\endgroup$
    – common_goldfish
    Jun 13, 2022 at 0:25
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As of 3.2.0 beta there's limited caustics in shadows of refractive objects:

Release Notes 3.2 Cycles (fourth bit down)

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