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Denoiser Question

neomanneoman Posts: 74
in Technical Help (nuts n bolts)

I use the denoiser without any problem, except that for one character, if I put two characters in the scene, the denoiser stops working immediately and the image comes out grainy. Will you know why this happens? Thank you so much!

Comments

  • SofaCitizenSofaCitizen Posts: 1,947

    I believe that the Iray denoiser only works on the graphics card - thus if the second figure means the scene exceeds your VRAM and the render falls back to CPU then it won't work.

  • barbultbarbult Posts: 24,669

    The denoiser only works with NVIDIA GPU renders. If your scene gets to big for the GPU and falls back to CPU, the denoiser will be disabled. Adding a second character probably made your scene too big for your GPU. You can use a free utility like GPU-Z to monitor the GPU usage. You can try using a product like Scene Optimizer to help make the scene fit in your GPU.

  • a4451983a4451983 Posts: 0

     If your scene gets to big for the GPU and falls back to CPU, the denoiser will be disabled.

     So why does the denoiser work in 4.22 but doesn't in 4.23?

    rendering the exact same image using both versions produces very different results. This program seems to be going backwards in it's development. ghost lights anyone?

  • Richard HaseltineRichard Haseltine Posts: 102,116

    a4451983 said:

     If your scene gets to big for the GPU and falls back to CPU, the denoiser will be disabled.

     So why does the denoiser work in 4.22 but doesn't in 4.23?

    rendering the exact same image using both versions produces very different results. This program seems to be going backwards in it's development. ghost lights anyone?

    Iray is developed by nVidia, not Daz. The things mentioned in your post are Iray.

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