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Cerealmike

Decrease render time for Glass Object

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Hi,

 

I was wondering how to decrease the render time of my scene. Especially the glass. I'm sorry , can't show the entire image.

 

Render time per frame: +- 26 minutes

1920 x 1080 resolution

 

The scene consists of:

- 6 lights (3 gsg softboxes, 1 point light, 1 infinite light, 1 area light)

- 1 main object with glass materials which animates into several boxes (see screencaps)

- MoTexts inside the glass object

- Studio backdrop

 

Extruded Object + Motext have a fillet of 2 caps over 0,4 radius

 

I've uploaded my render settings that I've tweaked.

 

I've read about dropping the specular?

Are there any other tips?

 

Thanks in advance

glass.png

tex.png

render settings.png

tex end.png

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26 mins is pretty reasonable for a GI scene that size that is full of glass ! Not sure you can get it much faster than that without losing quality.

But do you need so many area lights in the scene ? And do you actually need to use GI ? If so could you explain why ?

 

CBR

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  • Topic Author
  • With GI on I get more subtle reflections in the edges and between the gaps.

     

    I use one area light to lit the backdrop. One infinite light to get a distinct green shadow on the floor in front of the object. One point light to create variation in the reflections / specular and create some 'depth feeling' in the glass object since no background elements may be used.

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    AA try decreasing to max level 4x4 or 8x8.

    Reflection depth... you should get away with 2-3.

    Decreasing ray depth also speedps up rendering.

    I understand this will be an animation? If so,you can choose GI mode that it better suited for  animation. Your chosen mode QMC +LM is quite slow in your case.

     

    my 2 cents.

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