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DS 4.15 and latest IRay drivers?

marblemarble Posts: 7,500
in Daz Studio Discussion

I am wondering whether installing the latest IRay drivers may have affected my scene lighting even though I have not updated my DAZ Studio version (still on 4.15.02)? It seems to me that I now need to add one or two more zeroes to the luminosity setting of my photometric spotlights. For years I have been adding twp extra zeroes to the default luminoisty setting but lately that seems to make little difference to the light so I am adding 2 extra zeroes.

The only thing I have updated lateley is the NVIdia drivers for my RTX 3090.

Comments

  • Catherine3678abCatherine3678ab Posts: 8,337

    My understanding is that they fixed a glitch so yes, you might want to update D/S to 4.20 which is made to use with the updated drivers.

    There are some changes as to how the lighting system works - and there are some tutorials on YouTube for how to use them.

  • marblemarble Posts: 7,500

    Catherine3678ab said:

    My understanding is that they fixed a glitch so yes, you might want to update D/S to 4.20 which is made to use with the updated drivers.

    There are some changes as to how the lighting system works - and there are some tutorials on YouTube for how to use them.

     

    I'm still very wary of going to 4.20 considering all the threads here asking how to revert to a previous version. For the time being, I'll just keep adding extra zeroes until the complaints about 4.20 appear to be resolved.

  • Richard HaseltineRichard Haseltine Posts: 100,836

    Driver version certainly shouldn't affect the way Iray works. 4.20.x.x has not changed the way photometric lights change in any event - the changes affect mesh lights with transparency and the surface Thin Film setting.

  • marblemarble Posts: 7,500

    Richard Haseltine said:

    Driver version certainly shouldn't affect the way Iray works. 4.20.x.x has not changed the way photometric lights change in any event - the changes affect mesh lights with transparency and the surface Thin Film setting.

    After trying again with a completely different scene, I concur with your comments. The spotlight in the second scene behaves as I would have expected previously so my spotlight problem seems to be limited to the scene I tried earlier. I have no idea why that should be so and I checked all the usual suspects (I often forget that I have the Environment Options set to Dome only which would stop the spotlight shedding any light).

  • Catherine3678abCatherine3678ab Posts: 8,337

    Richard Haseltine said:

    Driver version certainly shouldn't affect the way Iray works. 4.20.x.x has not changed the way photometric lights change in any event - the changes affect mesh lights with transparency and the surface Thin Film setting.

    I thought it would. I'm using D/S4.16 and did not update to the latest vNvidia drivers for that reason. So you are saying that one can update the drivers and D/S4.16 will continue working the same as it did before updating?

  • Richard HaseltineRichard Haseltine Posts: 100,836

    Catherine3678ab said:

    Richard Haseltine said:

    Driver version certainly shouldn't affect the way Iray works. 4.20.x.x has not changed the way photometric lights change in any event - the changes affect mesh lights with transparency and the surface Thin Film setting.

    I thought it would. I'm using D/S4.16 and did not update to the latest vNvidia drivers for that reason. So you are saying that one can update the drivers and D/S4.16 will continue working the same as it did before updating?

    Yes, barring any weird bugs in the drivers at least.

  • Catherine3678abCatherine3678ab Posts: 8,337

    Okay, thanks :-)

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