Comments on: (Tested) OpenGL Geometry Instancing: GeForce GTX 480 vs Radeon HD 5870

By: OnlyLinuxLovesUBack

OnlyLinuxLovesUBack — Sat, 13 Aug 2011 18:42:03 +0000

where do i get the source code?

Thanks!

By: DarkUltra

DarkUltra — Tue, 04 Jan 2011 13:50:31 +0000

180 million eh? According to 3dmark 01, my gtx 470 does 400 million.

http://jooh.no/web/GeForce_8600_GT_vs_GTX_470_polygon_performance.png

Instancing as in the article however, does not use as much cpu power, but is also less useful than “real” cpu aware polygons.

the 470 fermi have several setup engines running in parallel instead of just one as all the previous gpus (ati and nvidia)

please delete my previous post

By: Ryan

Ryan — Tue, 09 Nov 2010 01:27:37 +0000

Yeah, the source for this would be really handy!

By: codablank

codablank — Sun, 08 Aug 2010 17:42:53 +0000

where can I find the source of this demo ? or a similar source ? I get very bad performance with glDrawElements() (1000 cube instances max ) and glDrawElementsInstanced gives the same result

Yet I get a descent FPS when I run your demo (I’m on ATI 4850, opengl 2.1)

By: krishx007

krishx007 — Thu, 08 Jul 2010 15:16:05 +0000

r u alive????????

By: krishx007

krishx007 — Thu, 08 Jul 2010 15:15:17 +0000

hay JeGX R u died or what?????

Not publishing any new article from 3 to 4 days???

Fight with GirlFriend?????????

By: Psolord

Psolord — Thu, 08 Jul 2010 11:47:55 +0000

Completely off topic but I think our friend JegX should make a post about this.
http://www.techreport.com/discussions.x/19216

By: ddd

ddd — Wed, 30 Jun 2010 17:23:14 +0000

Omg, make a GRAPH, not text :p

By: TopLess3D

TopLess3D — Wed, 30 Jun 2010 14:32:21 +0000

Could you share your source code please (both C++ and GLSL), in order to learn advanced techniques and programming in OpenGL?

By: ca$per

ca$per — Wed, 30 Jun 2010 09:38:04 +0000

Same thing as Matumbo here. But i have Radeon 4850 on Win7 and Cat. 10.5
F6 – asteroids are all black with all triangle variations (different EXEs).

By: IVXXX

IVXXX — Wed, 30 Jun 2010 09:10:35 +0000

20,000 instances x 18 tri/instance = 360,000 tri
ATI HD4770 @ 940 core / 4800 mem
– F2: FPS=44, GPU=50%, CPU=28%
– F3: FPS=57, GPU=58%, CPU=30%
– F4: FPS=54, GPU=40%, CPU=30%
– F5: FPS=140, GPU=42%, CPU=34%
– F6: FPS=152, GPU=34%, CPU=30% (no shadinng)

100,000 instances, 1800 tri/instance = 180,000,000 tri
ATI HD4770 @ 940 core / 4800 mem
– F2: FPS=5, GPU=99%, CPU=18%
– F3: FPS=5, GPU=99%, CPU=16%
– F4: FPS=5, GPU=99%, CPU=16%
– F5: FPS=4-8, GPU=99%, CPU=12-28%
– F6: FPS=1-6, GPU=99%, CPU=6-28% (no shadinng)

By: Matumbo

Matumbo — Wed, 30 Jun 2010 08:07:30 +0000

I tested with a Radeon HD 2400, Catalyst 10.6.
The F6 technique half-failed: the asteroids are there, rotating, but all shading on them is turned off (all black). But the middle planet is shaded.
I suppose this was not intended.
The driver exposes all the 3 required extensions.

By: WacKEDmaN

WacKEDmaN — Wed, 30 Jun 2010 03:56:16 +0000

20,000 instances x 18 tri/instance = 360,000 tri
Geforce GTX 470@ 700 core /1800 mem
– F2: FPS=18, GPU=20%, CPU=30%
– F3: FPS=40, GPU=21%, CPU=35%
– F4: FPS=68, GPU=15%, CPU=35%
– F5: FPS=96, GPU=19%, CPU=35%
– F6: FPS=101, GPU=24%, CPU=30%

100,000 instances, 1800 tri/instance = 180,000,000 tri
Geforce GTX 470@ 700 core /1800 mem
– F2: FPS=4, GPU=67%, CPU=30%
– F3: FPS=6, GPU=99%, CPU=24%
– F4: FPS=6, GPU=99%, CPU=14%
– F5: FPS=6, GPU=99%, CPU=12%
– F6: FPS=6, GPU=99%, CPU=10%

interesting…CPU usage goes down as GPU goes up..i thought the cpu would be less stressed with the lower geometry count…

By: Mars_999

Mars_999 — Tue, 29 Jun 2010 23:52:09 +0000

Yes keep these demo and tutorials coming. I enjoy reading them as it keeps me up to date on the newest features I can do with OpenGL. Plus it’s nice to see the old vs. new method of doing the same thing so once can make his own decision on what to do.

Thanks!!! keep up the good work!

By: nicolas

nicolas — Tue, 29 Jun 2010 22:31:29 +0000

FWIW, note that with more triangles, you’ll be hitting harder the triangle setup bottleneck of one triangle per clock cycle. Don’t know for the NVidia GTX 480, but this limit applies for the ATI R5xxx ; I don’t think that going beyond 180M triangles will bring you anything good for this generation of boards.

Nice summary of instanciation techniques and perfs though. Did you try to have finer grained timings with ARB_timer_query extension ?

Cheers

By: JeGX

JeGX — Tue, 29 Jun 2010 22:02:36 +0000

Thanks Mr Groove!
I’ll update this demopack with new techniques next time (at least with instanced array). And I’ll increase the number of polygons per instance 😉

By: Groovounet

Groovounet — Tue, 29 Jun 2010 21:50:50 +0000

Nice work anyway!

By: Groovounet

Groovounet — Tue, 29 Jun 2010 21:50:35 +0000

It would be interesting to see how the test behave with different instancing methods: instanced array, texture buffer, etc. Also 1800 triangles isn’t so much for the maximum.

By: OpenGL Geometry InstancingJeGX's Infamous Lab | JeGX's Infamous Lab

OpenGL Geometry InstancingJeGX's Infamous Lab | JeGX's Infamous Lab — Tue, 29 Jun 2010 20:44:53 +0000

[…] article has been updated with new demos and new GI technique. Read the complete article here: OpenGL Geometry Instancing: GeForce GTX 480 vs Radeon HD 5870. This demo uses instancing techniques (simple instancing, pseudo-instancing and geometry […]