Re: Last Quesa is very slow

[James W. W. <os...@jw...>]

On Oct 9, 2007, at 7:59 AM, Sauro Agostini wrote:

>>
>> * The original farmhouse ran at about 6 FPS.
>> * With extra references removed (the RemoveExtraReferences function),
>> the speed was about 60 FPS.
>>
>> * With some more algorithms, I got the speed up to about 370 FPS.
>> The sequence of algorithms I used was:
>>
>> RemoveExtraReferences
>> DecomposeGeometries
>> LowerAttributesToGeometries
>> FlattenHierarchy
>> OptimizeTriMeshes
>> MergeTriMeshes
>
>
> Thanks a lot for your algorithms.
>
> There was a bug in the export 3DMF function of my application, so  
> there were more submitting of the same models.
>
> I tried to add all the other optimization functions, but I didn't  
> get your results.
>
>
> I added the following code to the Geom test example, after  
> importing a model:
>
>         RemoveExtraReferences(notOptimizedModel);
>         DecomposeGeometries( notOptimizedModel,theView );
>         LowerAttributesToGeometries( notOptimizedModel);
>         theModel=(TQ3GroupObject) FlattenHierarchy 
> (notOptimizedModel,0 );
>         OptimizeTriMeshes(theModel);
>         MergeTriMeshes( theModel);
>
>
> Working on the same 3dmf file that I sent you I have the following  
> results (on an iMac Intel 2 core Duo)
>
> Without optimization               18 FPS
> With extra references removed     155 FPS
> With all the algorithms           178 FPS
>
> Maybe didn't I apply the algorithms correctly?

DecomposeGeometries, like Q3Geometry_GetDecomposed, must be called in  
a submitting loop.  When I tried it, I did it like this:

	Q3View_StartBoundingBox( theView, kQ3ComputeBoundsApproximate );
	Qut_SubmitDefaultState(theView);
	DecomposeGeometries( gSceneGeometry, theView );
	Q3View_EndBoundingBox( theView, &dummyBounds );