What happend to Bullet Physics.

Gregster · 1 Mar 2015 at 20:43

Well if that is what Bullet can do - colour me unimpressed. Not very good at all IMO.

triss · 1 Mar 2015 at 20:49

Imo the biggest reason is Performance, Lets take the tower for eg the tower falls every object is tracked if effects everything ti hits + then those objects are tracked +the objects those hit and so on,Ripple effect ontop of already running the game..
FPS imo would often drop punters would moan and call it un optimised rubbish.
Do i like physx etc yes, but i also see why devs A dont use it and B its extra time which would put the cost of making a game up

p5ychonaut · 1 Mar 2015 at 20:55

I thought the vehicle deformation physics of GTA IV and V were quite impressive and apparently both games use the Bullet physics engine.

http://en.wikipedia.org/wiki/Bullet_(software)#Commercial_games

shankly1985 · 1 Mar 2015 at 20:57

This is well worth a watch. Physics running on AMD GPUs..
http://youtu.be/WtfTqV2ZPO0

shankly1985 · 1 Mar 2015 at 21:06

This shows some very impressive results you can get..

Blender - Bullet Physics HD
Some rigid body physics tests I made in Blender. Simulated using the blender bullet physics engine.
https://www.youtube.com/watch?v=PfezSJB21vk

Martini1991 · 1 Mar 2015 at 21:07

shankly1985 said:
This is well worth a watch. Physics running on AMD GPUs..
http://youtu.be/WtfTqV2ZPO0

Is it really? Or is it on the CPU?

shankly1985 · 1 Mar 2015 at 21:11

Martini1991 said:
Is it really? Or is it on the CPU?

On the GPU I believe using OpenCL

https://www.youtube.com/watch?v=36bIdH6EBkM

Gregster · 1 Mar 2015 at 21:17

shankly1985 said:
This shows some very impressive results you can get..

Blender - Bullet Physics HD
Some rigid body physics tests I made in Blender. Simulated using the blender bullet physics engine.
https://www.youtube.com/watch?v=PfezSJB21vk

You did well there Shankly. I didn't know you had those skills. Impressive :cool:

triss · 1 Mar 2015 at 21:18

p5ychonaut said:
I thought the vehicle deformation physics of GTA IV and V were quite impressive and apparently both games use the Bullet physics engine.

http://en.wikipedia.org/wiki/Bullet_(software)#Commercial_games

Interestingly GTA IV release date was when he was working for Sony still ,Guessing Erwin Coumans developed it on his own ? since it was well before he went to AMD?

shankly1985 · 1 Mar 2015 at 21:20

Gregster said:
You did well there Shankly. I didn't know you had those skills. Impressive

You see Trolls brains are not well adapted to understand this wasn't my work..

triss · 1 Mar 2015 at 21:20

https://www.youtube.com/watch?v=PfezSJB21vk

Yes i'd love to see that in everygame but i suspect fps would be hampered, I would be prepared to take the hit for the realism but i dont know if most would agree

shankly1985 · 1 Mar 2015 at 21:21

Worth noting here I have seen loads games over the years for ps3 with Bullet logo on the back of the case..

triss · 1 Mar 2015 at 21:25

shankly1985 said:
Worth noting here I have seen loads games over the years for ps3 with Bullet logo on the back of the case..

Erwin Coumans, its main author, worked for Sony Computer Entertainment US R&D from 2003 until 2010, for AMD until 2014, and he now works for Google.

Maybe this is why shankly?

Gregster · 1 Mar 2015 at 21:26

shankly1985 said:
You see Trolls brains are not well adapted to understand this wasn't my work..

WOW!!! I read the write up and watched the vid. My mistake but no need for that. How very rude.

Pro-tip - Use quotes when quoting others and that saves any confusion.

shankly1985 · 1 Mar 2015 at 21:28

triss said:
Erwin Coumans, its main author, worked for Sony Computer Entertainment US R&D from 2003 until 2010, for AMD until 2014, and he now works for Google.

Maybe this is why shankly?

Very well could be.. Am trying to find a list now of games for ps3.. But am sure I have seen the logo on the cases a couple times.

shankly1985 · 1 Mar 2015 at 21:29

Gregster said:
WOW!!! I read the write up and watched the vid. My mistake but no need for that. How very rude.

Pro-tip - Use quotes when quoting others and that saves any confusion.

Pro-Tip dont TROLL me and you wont get a reply like that Simple Green Man.

Now go and Jog on somewhere else because I have no time for you..

Gregster · 1 Mar 2015 at 21:31

shankly1985 said:
Pro-Tip dont TROLL me and you wont get a reply like that Simple Green Man.

Carry on with the insults and I will report them. I genuinely thought you had made that and gave you credit. That is the problem when watching on my phone.

shankly1985 · 1 Mar 2015 at 21:32

Gregster said:
Carry on with the insults and I will report them. I genuinely thought you had made that and gave you credit. That is the problem when watching on my phone.

Yeah, Yeah, Yeah..... Bah, Bah, Bah

Gregster · 1 Mar 2015 at 21:35

Well, I was impressed with the planks and how well they reacted to the ball hitting them. Physics can really add to a game for me when done properly and something I would like to see more of.

humbug · 1 Mar 2015 at 21:40

shankly1985 said:
This shows some very impressive results you can get..

Blender - Bullet Physics HD
Some rigid body physics tests I made in Blender. Simulated using the blender bullet physics engine.
https://www.youtube.com/watch?v=PfezSJB21vk

One of many good examples. thanks Shanks.

In hindsight it might be a good idea to add some good examples to the opening post.

This is another Cryengine work using Bullet Physics, more than one hour spent on this.

Sorry about the comparisons undertone. thats really not what i want the debate to be about but its hard to find good Game development examples.

https://www.youtube.com/watch?v=WtfTqV2ZPO0