Raydium 3D Game Engine

Hello,

Some info about this bug.

I manage to have it here, small lags but it exist.

But you must read this.

If i comment line 69 of raykartracing (clouds update), application fails !

un comment -> work with small lag.

It fail in ode solveur. But i don't think the solver is problematic. There must be data corruption somewhere.

Hope this help.

P.S.: No lag at all with MD or other apps.

1) look inside default.cfg, when you need enable/disable any things
2) source are now updated - frustum culling test is removed.

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[HW] C2D Q6600, 4GB RAM, NV8800GTX, Vista Ultimate x64
[SW] Blide Plus, BlitzMax, Delphi, C++
[3D] Leadwerks 2.1, C4, TGE 1.5.2, Beyond Virtual

Why the results are not the same as AndyGFX ? This is going to turns me mad

Cause (i presume) is not the same bug.
All the behaviors that stops raydium (overflow in the output, loading things, and so) cause the same effect that LAG BUG, but only that time. If the problem is looped, then the effect is also looped, and it can be easily confused with real LAGBUG (Maybe we have to write a page in the wikipedia with this term ).
I'm pretty sure the lag bug is high resolution timer related...

Hello,

Can you (vincente) or AndyGfx try to make tests on a really small app that we can tests on others machine.

From my tests lag can be caused by:
- video card driver trouble.
- sound api (lot's of sound source to mix): directly related to andygfx code
- heavy particule handled in collision callback: directly related to andygfx code
- clouds and i don't now whatever: directly related to andygfx code
- grass: directly related to andygfx code

Don't misundestand me: andygfx make something in his code that make raydium bug, it's not andygfx problem but raydium to handle that. But i need to know where i have to look.

I can't invesitgate all of this, without sometimes explanation of angygfx on specific code hint for example and tons of hours.

I have no lag with maniadrive on ati hd card and core2duo on several computer i can make tests.

Is test6 experience this bug ?

Is explo.c (with camera tweak) the raydium's greatest piece of code candidate to this bug ?

Idem for test8, kinghill, raycar.

All of them are quite well known apps that it's easier to debug.

Waiting for you conclusion or proposal of a test code.

On the other hand: app crash in ode lcp solver, so it's ode problem not raydium (i don't believe this).

Have a nice day
Ouille

I know that isn't my problem.

NEWS:
I don't understand what was bad, but today after update linux OS on this machine: Desktop: Core2Duo X6800, nvidia 7300, Ubuntu 8.04., all radium demos and my too, work without LAG. It's strange for me.

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[HW] C2D Q6600, 4GB RAM, NV8800GTX, Vista Ultimate x64
[SW] Blide Plus, BlitzMax, Delphi, C++
[3D] Leadwerks 2.1, C4, TGE 1.5.2, Beyond Virtual

vicente: high resolution timer is completely hidden by Linux API, so it couldn't be the problem here, IMHO. in facts, we already had a bug with this timer a few years ago, and we fixed it (see raydium_timecall_internal_w32_detect_modulo() in timecall.c), but only for win32. It was not needed for Linux.

Note:

On my working PC (with 4 CPU) need raydium app, about 150-240% cpu time, divided to 4 CPU, but on Peter's PC under linux is only one CPU on 100% and second has 0%. Is it normal? Looks like wrong CPU time management.

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[HW] C2D Q6600, 4GB RAM, NV8800GTX, Vista Ultimate x64
[SW] Blide Plus, BlitzMax, Delphi, C++
[3D] Leadwerks 2.1, C4, TGE 1.5.2, Beyond Virtual

Raydium is monothreaded. It can (and wants) only eat one CPU/core. All Linux kernels does not reports CPU usage the same way, it's probably why you see differences here.

Ouille, I'll re-confirm this later, but ,i'm pretty sure, you can make tests with skel.c.
ALL raydium application using ODE have lagbug (in those computers).
Also I have modified it to show console output when lagbug occurs(0.1 is a try-out value to medium-low computers):

When Peter test this file later i'll say you how many times the lagbug check appears in the output.
By the way it's more or less common if the check appears in your output a few times (at least 1 time at start).

Well people, good news.
With the last updates in ubuntu in the last 24/48 hours almost all computers are now free of LAGBUG
Almost, cause there is only ONE computer still with that problem. The peter's desktop computer:

• PC Decktop: ATI HD2400 Pro, Core2Duo D925 3.0MHz ,Ubuntu 8.04

But i'm confident it will be spontaneusly fixed in a few days.
Looks like the problem was with ubuntu 8.04 and certain computers.

wow only 3 mhz, it is a apple II ?

ubuntu is useless for developpement , is only for server and desktop , exeprience inside

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Mmmm ... there's other places for distro trolls than here, I think.

And I have the sneaking suspicion that vicente have a bit more experience than you seems to think

(c'etait pas un troll, mais c'est juste que ubuntu sa jamais été une distrib de dev, je le sais par experience, j'ai toujours pas compris comment avoir ce ****** de qt4.4.* avec phonon :/ et raydium marche de justesse )

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Sauf ton respect, tu racontes des bêtises ... Mais surtout, ce topic sert d'autres intérêts, et en l'occurrence, nos posts n'ont rien à faire ici, sinon polluer un sujet particulièrement important.