POV-Ray : Newsgroups : povray.general : Question: Render Speed: Differences : Re: Question: Render Speed: Differences Server Time
16 May 2024 13:16:58 EDT (-0400)
  Re: Question: Render Speed: Differences  
From: clipka
Date: 31 Jan 2016 12:48:10
Message: <56ae48da$1@news.povray.org>
Am 31.01.2016 um 15:11 schrieb Sven Littkowski:
> Hi,
> 
> QUESTION 1
> what would improve the render speed of my scene: many small difference
> holes (boxes) inside a blob, or one large difference hole (box)? I need
> to understand better, how I can improve the render speed of my scene.
> Thanks.

Well, you /could/ achieve that better understanding by experimenting
with it ;)

In general, you want as few hole objects in any given other object.
For instance, for your hangars you're most likely better off to just use
one large box for the hole, and then add walls to partition that hole
into multiple hangars - even if that means adding many more objects.


> QUESTION 2
> And what renders faster: a shape made of many boxes of different sizes,
> or a mesh resembling the same shape? Thanks again.

I have no idea. You will indeed need to experiment with this one.

My personal expectation would be that the many boxes render faster
(provided that there are no intersections or differences involved) as
you need up to 12 triangles to replace one box, and the render engine
could no longer exploit the fact that the opposite sides of the shape
are parallel. On the other hand the mesh-specific bounding mechanism
might be powerful enough to compensate for this.


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