opensg-users  

Re: [Opensg-users] How do you really handle huge scenes?

Shaping
Thu, 08 May 2008 21:07:41 -0700

>> It seems you have already considered adding DoubleTransforms to OpenSG, 
>> but
>> later the idea was dumped.
>> I must ask: why?
>
> The problem is the cost. The transformations themselves are not too 
> expensive,
> but the bounding box and culling parts are used very often, and in many
> different operations, so just switching them to double would have a 
> noticeable
> impact. So you can't just do that, you have to support both single and 
> double
> versions of everything, and have a semi-intelligent way to switch between 
> them.
> In the end it seemed like a pretty serious amount of work, and only rather 
> few
> people were interested in it. As the page says we might revisit that for 
> 2, but
> unless there is a fairly clear interest form the users it might not be all 
> that
> high up in the priority list.

I am interested in having 64-bit calculations everywhere, as an option.


Shaping 


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