[sldev] Object and Texture Cache

[Maurizio de Pascale]

Hi,
the viewer engine is drawing things, and to do that it has obviously to
build up vertices and indices at some point, to feed them down to the
opengl since it is not using a software renderer.
Probably this data is stored somewhere in memory since it will be too
costly to build them on the fly at each rendering cycle.

I think that the LLDrawable class (the mDrawable field of viewer
objects) could be a good point to begin searching for (at least is what
I'm doing right now) but if some good guy on this list could shed light
on the subject I will be eternally grateful... :)

thank you in advance,
Maurizio de Pascale
mdepascale at dii.unisi.it



Ingmar Hupp wrote:
> You're probably better off grabbing the actual 3D data
> via http://ogle.eyebeamresearch.org/ than getting the prim parameters,
> because then you'd still have to implement the rendering for those.
>
>
> Ingmar
>
> On 21 Sep 2007, at 15:00, Andreas Lichtenberger wrote:
>
>> We want to render a SL scene in a own rendering engine. At the moment
>> just a static scene. Without agentmovement and without connection to
>> the sim.
>> So I need the data which goes through the sl rendering pipeline. My
>> idea was to fill the clean cache, just starting second life, let the
>> scene load and close it again.
>> Then to read out the cache and store the rendering data.
>> At the moment I´m able to read out the .slc files. So I have
>> LLVOCacheEntries. What is written in the mBuffer U8[size] Array? Can
>> I use this information to restore
>> the object data?
>> Is there an other way to bring the objects data in a format like the
>> data in the llm files of the character?
>> It would be a great start, to know how Vertices, Faces and so on are
>> created based on the prim parameters and where the primparameters are
>> stored, if they are stored.
>> Can you tell me what is written in the data.db2.x... file of the
>> cache directory? Just sounds?
>> I tried to restor the j2c textures of the cache. But I did something
>> wrong. I think, I have some misunderstandings, how long the header of
>> these files are and how the headers are stored.
>> Best regards,
>> Andi
>>
>>
>>
>> Dirk Moerenhout schrieb:
>>> Textures are stored and can be retrieved but I fear that you have a
>>> misconception related to vertices that will stop you from reaching
>>> your goals.
>>>
>>> Vertices, faces ... are created based on the prim parameters. They are
>>> not stored as vertices. It's probably better if you give some idea of
>>> what you want to achieve first.
>>>
>>> Dirk aka Blakar Ogre
>>>
>>> On 9/21/07, Andreas Lichtenberger <webmaster at ligosworld.com> wrote:
>>>   
>>>>  Hi,
>>>>  is anyone able to explain me Object and Texturecache, especially how I can
>>>> read it out.
>>>>  I need Object vertices, faces and textures for testing.
>>>>
>>>>  Regards
>>>>  Andi
>>>>
>>>> _______________________________________________
>>>> Click here to unsubscribe or manage your list subscription:
>>>> /index.html
>>>>
>>>>
>>>>     
>>>   
>>
>> _______________________________________________
>> Click here to unsubscribe or manage your list subscription:
>> /index.html
>
> -- 
> Ingmar "Ezhar Fairlight" Hupp | Head of Technology | *Rivers Run Red*
> http://spacethinkdream.com | http://riversrunred.com
>
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> Click here to unsubscribe or manage your list subscription:
> /index.html
>