Author Topic: Waiting on my back burner  (Read 5739 times)

Patrice Terrier

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Waiting on my back burner
« on: April 25, 2018, 01:07:55 pm »
These are the models waiting.

BTW, one of them had more than 100 millions indices, and still playing in ObjReader while using 99% of the GPU ;)

...
Patrice
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Michael Lobko-Lobanovsky

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Re: Waiting on my back burner
« Reply #1 on: April 25, 2018, 05:54:20 pm »
... one of them ...

The topmost one? ;)

Quote
... more than 100 millions indices ...

 :o

In 32 bits, such a model would probably fail to load at all due to low memory at an early stage of geo re-triangulation. And it would probably take a pre-VBO ObjReader minutes to render a single frame on its artificially affined one-core-only CPU...

Quote
... and still playing in ObjReader ...

Might still fail on a cheaper video card with just 1GB of VRAM. Needs testing to prove or disprove my supposition though.

Quote
... 99% of the GPU ;)

This figure usually means that the total of geo data plus indices plus mipmapped textures plus compiled shaders exceeds the total available VRAM, and the GPU has to swap portions of it into conventional RAM.

How much VRAM is there on your video card BTW?
Mike
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Patrice Terrier

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Re: Waiting on my back burner
« Reply #2 on: April 26, 2018, 03:27:25 pm »
The big one is the Bugatti Chiron (the 2nd)
chiron.obj = 2.88 Gb
chiron.mtl = 183 Kb
with 6478 meshes, and 2146 materials...

The one i am working on, shall be a decimated version, however i was amazed to see that i could load and manipulate this monster inside of ObjReader64 with a FPS 24/25, in non-turbo rotation mode!

See the screen shot for further details.

I am using a GeForce GTX 980M: with a VRAM dedicated of 4096 Mb, and GDDR5
+ shared memory of 8161 Mb
and a CPU of 16 Gb.
« Last Edit: April 26, 2018, 07:41:24 pm by Patrice Terrier »
Patrice
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Michael Lobko-Lobanovsky

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Re: Waiting on my back burner
« Reply #3 on: April 26, 2018, 06:15:50 pm »
Amazing! 34 million polies!  :o :D 8)

Keep the screenshot intact. People won't believe we did it. :)

(Patrice, can I also have that 2.88GB big one in its original state before you have decimated it to some more reasonable measure? :) )
« Last Edit: April 27, 2018, 02:12:32 am by Michael Lobko-Lobanovsky »
Mike
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Michael Lobko-Lobanovsky

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Re: Waiting on my back burner
« Reply #4 on: April 27, 2018, 07:47:13 pm »
Done, thanks! :D

Looking at its perfect triangulation in wireframe, I think its original file geometry has been coded as NURBS and then converted to polies automatically when porting the file from .FBX to .OBJ.

Strictly speaking, the Wavefront Object format also allows the model geo to be designed and written using Bezier curves and NURBS to keep the file size low. But the process isn't entirely clear to me. So I think we'll stick to the good old poly meshes. Besides I don't see many NURBS OBJ files around, if at all. ;)
Mike
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Patrice Terrier

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Re: Waiting on my back burner
« Reply #5 on: May 03, 2018, 05:38:55 pm »
Down from 34 million polygons to 6.5.

After three weeks work, this model is at least close to full completion...
« Last Edit: May 03, 2018, 07:11:37 pm by Patrice Terrier »
Patrice
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Michael Lobko-Lobanovsky

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Re: Waiting on my back burner
« Reply #6 on: May 04, 2018, 12:36:30 pm »
Outstanding, Patrice!
Mike
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Patrice Terrier

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Chiron (release candidate version)
« Reply #7 on: May 04, 2018, 09:52:08 pm »
Here is the release candidate version of the Bugatti Chiron 2018.

The size of the archive is too big to be used as a single attachment  :(

You have to download it from here
http://www.objreader.com/download/demo/Chiron.rar

if you know how to further reduce the size of the archive, or to split it into several modules, please let me know.
« Last Edit: May 04, 2018, 09:56:51 pm by Patrice Terrier »
Patrice
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Michael Lobko-Lobanovsky

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Re: Waiting on my back burner
« Reply #8 on: May 04, 2018, 11:46:56 pm »
Thank you, Patrice!

If the app that you've used to generate this .RAR archive is a genuine WinRar, then it should have an option to create a series of split archive files of arbitrary and equal size. The initial chunk file will have the name Chiron.rar, the next Chiron.001, then Chiron.002, etc.

They can be uploaded as separate attachments and then downloaded side by side in a common folder. Now if you try to decompress the initial file that has the .RAR extension, all the others will also be decompressed automatically and concatenated into a copy of original file or folder that you compressed into such a split archive.

I don't remember the exact procedure or command line switches but I think you can look them up in the WinRar user manual or command line help.
Mike
(3.6GHz Intel Core i5 Quad w/ 16GB RAM, nVidia GTX 1060Ti w/ 6GB VRAM, Windows 7 Ultimate Sp1)

Patrice Terrier

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Re: Waiting on my back burner
« Reply #9 on: May 06, 2018, 05:55:20 pm »
The Lamborghini Centenario roadster has been added to the collection
http://www.objreader.com/index.php?topic=20.msg2788#msg2788
Patrice
(Always working with the latest Windows version available...)