Le 17-08-22 à 07:00, Thomas de Groot a écrit :
> On 22-8-2017 10:45, Stephen wrote:
>> On 22/08/2017 07:43, Thomas de Groot wrote:
>>> On 22-8-2017 0:05, Sven Littkowski wrote:
>>>> On 21.08.2017 17:06, Stephen wrote:
>>>>> On 21/08/2017 21:30, Sven Littkowski wrote:
>>>>>>>
>>>>>> And how to create MESH3 meshes?
>>>>>> Instructions needed.
>>>>>>
>>>>>
>>>>> Why would you want to if only the patched version can use them?
>>>>>
>>>>>
>>>> Because I always like to try out patched versions, and if there is a
>>>> speed bonus, why not to try?
>>>>
>>>
>>> However, I seriously question the /meaning/ of that "speed bonus". 
>>> After all, it is what the original maker (as cited by Bald Eagle) 
>>> tells us. My experience is that there is nothing wrong with the 
>>> "speed" of huge mesh2 files, so I would not even take the trouble.
>>>
>>
>> Never the less, just out of idle curiosity. It would be interesting to 
>> see the results of some tests.
>>
>> I agree that there is nothing wrong with the speed of mesh2 in PovRay. 
>> But if there were a significant speed up another propriety format 
>> wouldn't blow up the world.
>>
>> We could put in a feature request for Pov Ver 4.0
>>
>>
> That might be an idea indeed.
> 
> However, there is one point I do not like about the mesh3: it is a 
> binary format and so not editable as mesh2 is. I find that a serious 
> disadvantage.
> 

As I see it, there should be no gain while rendering, but potentially a 
big gain while parsing as you need to load the mesh definition from a 
file. Smaller file = faster loading. Also, as the mesh3 seems to be 
preparsed, that's another step where a gain in speed couls appen.
Could be a nice improvement in an animation that otherwise renders rapidly.

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