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hardware OS4   hardware OS4 : New MiniGL 2.4
   posted by SOFISTISOFTWARE on 24-Dec-2010 8:27:18 (7206 reads)
Hi guys,

there is a new MiniGL in OS4Depot upload !!!

Changes in V2.4
---------------
- Implemented a faster square-root function using the frsqrte (get faster performance in some cases)
- Implemented a reciprocal square-root using the frsqrte assembly code (another small performance boost)
- A few other optimizations

    

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pavlor 
Re: New MiniGL 2.4
Posted on 24-Dec-2010 9:37:01
#1 ]
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Joined: 10-Jul-2005
Posts: 9494
From: Unknown

Good work!

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gregthecanuck 
Re: New MiniGL 2.4
Posted on 24-Dec-2010 9:54:48
#2 ]
Cult Member
Joined: 30-Dec-2003
Posts: 846
From: Vancouver, Canada

I like the "A few other optimizations" part.

This could be very interesting!

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Thematic 
Re: New MiniGL 2.4
Posted on 24-Dec-2010 10:01:13
#3 ]
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Joined: 28-Oct-2003
Posts: 1616
From: I'm actually flying into a bug!

I remember back when 4.1 fared slightly worse than 4.0 setup with 3D performance (YMMV), but already with updated 4.1 and MiniGL (2.3) this was no longer the case. Nice to be done with these loose ends.


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kas1e 
Re: New MiniGL 2.4
Posted on 24-Dec-2010 10:10:54
#4 ]
Elite Member
Joined: 11-Jan-2004
Posts: 3549
From: Russia

Pretty cool ! Will do today some actual benchmarks , just for see if there any visual difference or not.

But in any case, optimisation work in 3d area its very welcome


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Phantom 
Re: New MiniGL 2.4
Posted on 24-Dec-2010 10:32:52
#5 ]
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Joined: 2-Aug-2007
Posts: 2047
From: Unknown

Great work, thanks.


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Troels 
Re: New MiniGL 2.4
Posted on 24-Dec-2010 10:43:30
#6 ]
Elite Member
Joined: 8-Mar-2003
Posts: 2004
From: Unknown

@kas1e
I knew you would be among the first to comment when I saw this news item

Good to see more updates to MiniGL


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NutsAboutAmiga 
Re: New MiniGL 2.4
Posted on 24-Dec-2010 11:26:44
#7 ]
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Joined: 9-Jun-2004
Posts: 12611
From: Norway

I think this is excellent news while we wait for new 3d system.


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DAX 
Re: New MiniGL 2.4
Posted on 24-Dec-2010 12:16:55
#8 ]
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Joined: 30-Sep-2009
Posts: 2790
From: Italy

lots of stuff to do for me, I still have to upgrade my Sam with the last Acube patches, then this, he he (finally I'll have some time for Christmas)


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kas1e 
Re: New MiniGL 2.4
Posted on 24-Dec-2010 12:28:37
#9 ]
Elite Member
Joined: 11-Jan-2004
Posts: 3549
From: Russia

@All

Btw, its those optimisation was done by Hans or not ?

Anyway, sorry to disappoint , but i tryed LodePaint with new minigl.library : FPS 100% the same (not any differences), but it start to be even worse : while you operate with lodepaint windowses , everything freezes on milliseconds. I.e. you move cursor, its ok for 1-2 seconds, then freeze on 0.5 seconds, then continue moves. And all the time like this.

Will try Cube for now.


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kas1e 
Re: New MiniGL 2.4
Posted on 24-Dec-2010 12:49:02
#10 ]
Elite Member
Joined: 11-Jan-2004
Posts: 3549
From: Russia

With cube no differences in terms of FPS. Well, maybe if only a bit. With 2.3 at some map was 39-41 fps, with 2.4, stable 41 and sometime 42 fps. I.e. 1 fps of difference. But problems with lodepaint now pretty heavy (unusable when you try to work with menu windwoses).


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kas1e 
Re: New MiniGL 2.4
Posted on 24-Dec-2010 12:57:31
#11 ]
Elite Member
Joined: 11-Jan-2004
Posts: 3549
From: Russia

And the last benchmark, just to summarize:

minigl 2.3

9/0.Work:a/CubeBM> Cube
6656 frames drawn in 8.0 seconds
1316 fps (0.760 milliseconds per frame)
841 fps (1.188 milliseconds per frame with swap)


minigl 2.4

8/0.Work:a/CubeBM> Cube
7621 frames drawn in 9.2 seconds
1342 fps (0.745 milliseconds per frame)
841 fps (1.188 milliseconds per frame with swap)

A little faster (the same as cube-game), but difference are pretty small. Imho for the moment not worth of updating for those ones who use lodepaint. Imho that "little freeze" can happens as well in other opengl apps.

Last edited by kas1e on 24-Dec-2010 at 12:57 PM.


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klx300r 
Re: New MiniGL 2.4
Posted on 24-Dec-2010 13:00:43
#12 ]
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Joined: 4-Mar-2008
Posts: 3817
From: Toronto, Canada

@ kas1e

thanks for the updates! sound like it's not worth upgrading at this point


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samo79 
Re: New MiniGL 2.4
Posted on 24-Dec-2010 13:13:01
#13 ]
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Joined: 13-Feb-2003
Posts: 3502
From: Italy, Perugia

@kas1e

Quote:
Btw, its those optimisation was done by Hans or not ?


From m3x

And yes it is only a minor update but better than nothing

Last edited by samo79 on 24-Dec-2010 at 01:15 PM.


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kas1e 
Re: New MiniGL 2.4
Posted on 24-Dec-2010 13:23:21
#14 ]
Elite Member
Joined: 11-Jan-2004
Posts: 3549
From: Russia

@samo79

Yep, if only there not freezes when you leave mouse cursor from and to lodepaint window. I will write mail to Hanz for now, hope he can fix it.


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kas1e 
Re: New MiniGL 2.4
Posted on 24-Dec-2010 13:32:45
#15 ]
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Joined: 11-Jan-2004
Posts: 3549
From: Russia

Just to make thinks clear, that how bug is happens now (will be cool if someone else can try that as well, just to see on which HW it happens, on which not happens and so on):

When you run LodePaint with new minigl/mglut library, and trying to open any window in programm itself (for example image/rescale), and then, trying to move mouse cursor away from the working opengl window , the whole system "freezes" at 0.5 seconds and after that little freeze, continue to work. The same happens if you will try to move cursor from desktop to working opengl window back : the same little freeze (like fighting for the resources are happens) and then all works nextly.

Can anyone check it ?


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Kicko 
Re: New MiniGL 2.4
Posted on 24-Dec-2010 14:24:01
#16 ]
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Joined: 19-Jun-2004
Posts: 5009
From: Sweden

thanks for xmas present :)

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Jupp3 
Re: New MiniGL 2.4
Posted on 24-Dec-2010 14:27:30
#17 ]
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Joined: 22-Feb-2007
Posts: 1225
From: Unknown

I wouldn't call anything running >1000 fps (especially on "lower end amiga-compatible" gfx cards) a "benchmark"

Usually these are really far from any actual usecases. As I don't know this particular program, I'll explain why using glxgear as a benchmark is a really bad idea, I am pretty sure some points apply for this case aswell:

1)What it does is really far from most usecases (non-textured non-animated low resolution models, while many people are interested in performance of much heavier & texture mapped games)
2)The drawing is done by the slowest possible way: immediate mode
3)Immediate mode is deprecated (and rarely used in any properly coded OpenGL game), so gfx card manufacturers don't bother optimizing it too much - it will never be as fast as VBO, so why bother? It's the fault of program to use wrong ways to draw.
4)At "too high" fps, any small thing can have big impact on framerate (say, drop from 4000 to 3000 fps) which in most cases doesn't mean that 40fps game would slow down to 30fps.
5)If you have "sync to vblanc" enabled, fps will be dropped dramatically (to actual screen refresh rate) - which some might interpret as "something being seriously wrong with drivers"

At least, please don't call it benchmarking

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samo79 
Re: New MiniGL 2.4
Posted on 24-Dec-2010 14:39:03
#18 ]
Elite Member
Joined: 13-Feb-2003
Posts: 3502
From: Italy, Perugia

@kas1e

I confirmed you issue on LodePaint, it freeze on my Sam too, maybe m3x remove somethings when trying to increase the performance ... and yes it is only 1 or 2 FPS more, i think we need to wait the next OS update (Warp3D) for other little improvement, (bug fixed mostly) and then Mesa/Gallium


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kas1e 
Re: New MiniGL 2.4
Posted on 24-Dec-2010 18:28:51
#19 ]
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Joined: 11-Jan-2004
Posts: 3549
From: Russia

@jupp3

Quote:

At least, please don't call it benchmarking


The most important for end users results (does not matter how call it), are in actual apps and games. And games and apps, show for us 1-2 fps difference + some new bugs. Of course you can be pedantic and show us how good you understand all that stuff, but for end users all of this more than enough.


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ikir 
Re: New MiniGL 2.4
Posted on 24-Dec-2010 18:30:49
#20 ]
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Joined: 18-Dec-2002
Posts: 5647
From: Italy

Thanks very much for this welcome xmas gift!


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