quesa-develop

Last Quesa is very slow

[Sauro A. <int...@in...>]

Using the latest Quesa we found that it is very slow than the old 1.8 
version and previous versions, especially with polygons and general 
polygons.

The problems is evident with our programs, where using the latest 
version of Quesa, navigating is very slow using any renderer.

We tested different versions of Quesa on different computers using 
Geom Test with the following results:


Test                                                MultiBox 
Quesa Logo     MultiBox        Quesa Logo
						   Interactive 
Interactive       OpenGl         OpenGl
                                                        FPS 
FPS           FPS            FPS

Last Quesa on iMac Intel Core duo 1.83 GHz             12 
1030           11             2500
Last Quesa on G5 Dual 1.8 GHz                           9 
630           11             1500

Quesa 1.8  on iMac Intel Core duo 1.83 GHz             36 
970          -----          -----
Quesa 1.8  on G5 Dual 1.8 GHz                          26 
720          -----          -----

Old Geom Test 2003 on iMac and Rosetta                 18 
500          -----          -----
Old Geom Test 2003 on G5 Dual 1.8 GHz                  28 
730          -----          -----


Practically the latest version is faster using OpenGl and Quesa Logo, 
but it is very slow with the MultiBox  model, independently of the 
kind of renderer, where last Quesa for Intel is slower than Quesa 1.8 
emulated with Rosetta!

Also with our programs we have similar results, with the latest 
version that is 3 times slower than Quesa 1.8 and previous versions 
(12  FPS versus 36 FPS).

Any suggestions?

Sauro Agostini

Re: Last Quesa is very slow

[James W. <ja...@fr...>]

Sauro Agostini wrote:
> Using the latest Quesa we found that it is very slow than the old 1.8 
> version and previous versions, especially with polygons and general 
> polygons.
> 
> The problems is evident with our programs, where using the latest 
> version of Quesa, navigating is very slow using any renderer.
> 
> We tested different versions of Quesa on different computers using 
> Geom Test with the following results:
> 
> 
> Test                                                MultiBox 
> Quesa Logo     MultiBox        Quesa Logo
> 						   Interactive 
> Interactive       OpenGl         OpenGl
>                                                         FPS 
> FPS           FPS            FPS
> 
> Last Quesa on iMac Intel Core duo 1.83 GHz             12 
> 1030           11             2500
> Last Quesa on G5 Dual 1.8 GHz                           9 
> 630           11             1500
> 
> Quesa 1.8  on iMac Intel Core duo 1.83 GHz             36 
> 970          -----          -----
> Quesa 1.8  on G5 Dual 1.8 GHz                          26 
> 720          -----          -----
> 
> Old Geom Test 2003 on iMac and Rosetta                 18 
> 500          -----          -----
> Old Geom Test 2003 on G5 Dual 1.8 GHz                  28 
> 730          -----          -----
> 
> 
> Practically the latest version is faster using OpenGl and Quesa Logo, 
> but it is very slow with the MultiBox  model, independently of the 
> kind of renderer, where last Quesa for Intel is slower than Quesa 1.8 
> emulated with Rosetta!
> 
> Also with our programs we have similar results, with the latest 
> version that is 3 times slower than Quesa 1.8 and previous versions 
> (12  FPS versus 36 FPS).
> 
> Any suggestions?

Are you sure you're comparing builds made with the same compiler and 
optimization options?  I am a little skeptical, because outside the 
OpenGL renderer, I think most recent changes have been intended to 
improve performance.

Besides my previous suggestion to try Shark, you could use cvs to try to 
narrow down the problem.  That is, check out the sources as of various 
dates between 1.8 and now, to try to discover when a slowdown happened.
-- 
   James W. Walker, Innoventive Software LLC
   <http://www.frameforge3d.com/>

Re: Last Quesa is very slow

[Sauro A. <sag...@in...>]

>
>  >
>>  Practically the latest version is faster using OpenGl and Quesa Logo,
>>  but it is very slow with the MultiBox  model, independently of the
>>  kind of renderer, where last Quesa for Intel is slower than Quesa 1.8
>>  emulated with Rosetta!
>>
>>  Also with our programs we have similar results, with the latest
>>  version that is 3 times slower than Quesa 1.8 and previous versions
>>  (12  FPS versus 36 FPS).
>>
>>  Any suggestions?
>
>Are you sure you're comparing builds made with the same compiler and
>optimization options?  I am a little skeptical, because outside the
>OpenGL renderer, I think most recent changes have been intended to
>improve performance.

I compiled the release version just with the options of the downloaded project.
Looking to the Quesa Logo FPS there is a big improvement, from 1500 
to 2500, while multibox goes down from 36 to 12, so it doesn't seem 
depend on some optimization option, the difference is too big.


>
>Besides my previous suggestion to try Shark, you could use cvs to try to
>narrow down the problem.  That is, check out the sources as of various
>dates between 1.8 and now, to try to discover when a slowdown happened.
>--


I'll try to test with Shark.

Sauro

Re: Last Quesa is very slow

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

Progress report: I've identified a reason that the multi-box test got  
slower. It seems to be a result of calling glBindFrameBufferEXT on  
each call to GLDrawContext_SetCurrent.  I have a fix, but I want to  
do a bit more testing before committing.

Re: Last Quesa is very slow

[James W. <ja...@fr...>]

I've committed a fix for the multi-box slowdown.  It may still be a few 
percent slower than 1.8, and I'm not sure why, maybe virtual method 
dispatch.

Bear in mind that the multi-box test is not a very realistic benchmark. 
  It has 6000 TriMeshes, each of which has its own attribute set but 
only 2 triangles.  This is an exceptionally high amount of overhead for 
the amount of geometry.
-- 
   James W. Walker, Innoventive Software LLC
   <http://www.frameforge3d.com/>

Re: Last Quesa is very slow

[Sauro A. <sag...@in...>]

I used multi-box because the results are similar to the models in our programs.

We have mainly architectural models, with thousands of polygons and 
general polygons.

I posted a 3DMF file of a small house at the following address

http://www.interstudio.net/quesa/Farmhouse1.3DMF.zip


Loading this model in Geom Text I have the following results (Dual 1.8 GHzG5):


Previous 1.8 Quesa and Interactive renderer 2.9  -  3.2  FPS

Last Quesa with Interactive or OpenGl renderer 8.1 - 8.4 FPS


Other results with other models of Geom Test


Test                            Quesa 1.8             Last Quesa
                                 Interactive           OpenGl


Box                             2000                  1500
MultiBox                        25                    8
Cone                            60                    280
General Polygon                 2220                  1900
Polygon                         2200                  1900
Trymesh                         2200                  2000
TriGrid                         1500                  1400
Torus                           1400                  1900
Quesa Logo                      630                   1200

Cone, Quesa Logo and Torus are better with the new version.

Box and MultiBox are better with the old version.

The others practically are the same.


Sauro Agostini

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