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Has the new version of the water turned black?

opppoe_c02b0d86opppoe_c02b0d86 Posts: 53
in Daz Studio Discussion

I set the Abbe, base color, Refraction Weight, and Transmitted Color to no avail. The thin wall is turned on and there is no refraction effect.

 

Comments

  • barbultbarbult Posts: 24,240

    Turn Thin Wall OFF if this is a 3 dimensional water volume and not a planar surface.

  • opppoe_c02b0d86opppoe_c02b0d86 Posts: 53

    barbult said:

    Turn Thin Wall OFF if this is a 3 dimensional water volume and not a planar surface.

    It is indeed off, because if it is on, there will be no refraction effect. 

  • barbultbarbult Posts: 24,240
    edited March 2022

    opppoe_c02b0d86 said:

    barbult said:

    Turn Thin Wall OFF if this is a 3 dimensional water volume and not a planar surface.

    It is indeed off, because if it is on, there will be no refraction effect. 

    Well, in your first post you said thin wall was on.

     

    Screenshot 2022-03-27 023907.jpg
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    Post edited by barbult on
  • opppoe_c02b0d86opppoe_c02b0d86 Posts: 53

    barbult said:

    Well, in your first post you said thin wall was on.

     

     Can you tune it to the previous effect?

  • SpaciousSpacious Posts: 481
    edited March 2022

    Is Top Coat turned on?  As I understand it, there are some changes to how Top Coat works in the new version of Iray that cause some darkening.

    Are there maybe some mesh lights under the surface of the water?  Mesh lights that are not fully opaque function differently in the new version of Iray as well.

    Did you change the color of the ceiling or sky?  It kind of looks like the water may just be reflecting a different color.

    Are you using the caustic sampler in either example?

    How about Spectral Rendering?  There are definitely some changes to that in the new version of Iray.

    There is clearly a bit of a refraction effect, it's just harder to see because of the darker color and that the render looks to be not as completed.

    You definitely want Thin Walled Off for a swimming pool.

    Post edited by Spacious on
  • Richard HaseltineRichard Haseltine Posts: 100,833

    It's Thin Film, not Top Coat, that has changed - something I have muddled up too.

  • SpaciousSpacious Posts: 481

    Richard Haseltine I thought there was also a change to Top Coat as well, in addition to the Thin Film change.  I don't know how anyone would get by without you saving the day to correct all of us and clarify things. :)

  • opppoe_c02b0d86opppoe_c02b0d86 Posts: 53

    Richard Haseltine said:

    It's Thin Film, not Top Coat, that has changed - something I have muddled up too.

     Oh, I mean, if the film is on, there is no refraction effect, but neither of these two pictures has anything to do with the film being on.

  • opppoe_c02b0d86opppoe_c02b0d86 Posts: 53

    Spacious said:

    Richard Haseltine I thought there was also a change to Top Coat as well, in addition to the Thin Film change.  I don't know how anyone would get by without you saving the day to correct all of us and clarify things. :)

    I found the product link, the color of the official picture above is correct, or rather transparent.

    https://www.daz3d.com/the-pool-house ;

     

    I added an HDRI and rendered a picture without any parameter modification, and there is still that difference.

    popup_17_3_10.jpg
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    20220329091948.png
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    my-rendering.png
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  • barbultbarbult Posts: 24,240

    Everything in your render is much darker than the promo image, not just the water. Everything in your render seems to be in shadow. You can't just an load an arbitrary HDRI, with an arbitrary amount of light coming from an arbitrary angle, and expect to reproduce promo image lighting. Experiment with other lighting, maybe sun-sky at noon.

  • opppoe_c02b0d86opppoe_c02b0d86 Posts: 53

    This effect can also be seen on other assets. Through the comparison of the membrane switch, we can see that the water has indeed turned black.

    Here are the official pictures:

     

    Here is my rendering:

     

    my rendering Thin Walled ON.png
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    my rendering Thin Walled OFF.png
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  • opppoe_c02b0d86opppoe_c02b0d86 Posts: 53

    barbult said:

    Everything in your render is much darker than the promo image, not just the water. Everything in your render seems to be in shadow. You can't just an load an arbitrary HDRI, with an arbitrary amount of light coming from an arbitrary angle, and expect to reproduce promo image lighting. Experiment with other lighting, maybe sun-sky at noon.

     

    you're right.

    I used ambient lighting where the sun was overhead, and it seemed that was indeed the reason for the lights. Ha halaugh

    I took a closer look at another scene, as if it was because of the sunlight.

  • PadonePadone Posts: 3,688

    @opppoe As @barbult says, water is a reflective surface, so it reflects what you have in the scene, including the sky. A dark sky will get a dark water. As for thin walled it turns off refraction, that's the bending of lights through the media, thus the deformation you see for the underlying surface.

  • opppoe_c02b0d86opppoe_c02b0d86 Posts: 53

    Padone said:

    @opppoe As @barbult says, water is a reflective surface, so it reflects what you have in the scene, including the sky. A dark sky will get a dark water. As for thin walled it turns off refraction, that's the bending of lights through the media, thus the deformation you see for the underlying surface.

    Yes, that's right 

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