[Rohit]

Sir,

I have been noticing since last few releases after OR 09 version that the excessive smoke from diesel locomotives reduces the frame rate to a much lower value that the display is about to freeze. The smoke from diesel locomotives in OR 09 is very good that it won't reduce the frame rate at all. I have reported a bug numbered #1319520 Reduction in Frame rate due to excessive smoke from Diesel Locomotives. It has recorded a bug heat of 20 and till date the status is undecided. I am eagerly waiting for the new experimental release which excludes the above problem. I have informed this matter several times. Since I have been facing the low frame per second due to this, I am not using the newer exp. releases. Instead I am using Or. v 1944. Hence it is requested to take urgent necessary action in this regard.

I am enclosing herewith a copy of the ENG files also.




Regards,
Rohit R Krishnan

Attached File(s)

•  WDP4B_TKD_40079.eng (36.69K)
  Number of downloads: 232
•  WDG3A_ABR_13471.eng (40.13K)
  Number of downloads: 213
•  WDG3A_ABR_13489.eng (40.13K)
  Number of downloads: 210
•  WDG3A_VTA_13456.eng (40.13K)
  Number of downloads: 203
•  WDG3A_VTA_13515.eng (40.13K)
  Number of downloads: 205

[vince]

Smoke looks fine in x2596 . . . and I like the wind effects.

regards,
vince

[cjakeman]

vince, on 19 October 2014 - 07:45 AM, said:

Smoke looks fine in x2596 . . . and I like the wind effects.

Yes, but if the frame rate dives for the models that Rohit is using, then there is a problem somewhere. It may be the models or it may be that the OR algorithm is too sensitive.

Worth looking into, I think.

[copperpen]

The settings within the eng file can be used to reduce the smoke to an acceptable level. Figures published here a a thread whose name escapes me gives

Exhaust1
(
0.01 4.877 -3.155
0 1 0
0.3

DieselSmokeEffectInitialMagnitude( 0.0 )
DieselSmokeEffectMaxMagnitude( 10 )
DieselSmokeEffectInitialSmokeRate( 0.0 )
DieselSmokeEffectMaxSmokeRate( 4 )

for Alco engines locomotives.

For EMD locomotives that use the GP38 eng file use
Exhaust nozzles diameter 0.15

DieselSmokeEffectInitialMagnitude( 1.0 )
DieselSmokeEffectMaxMagnitude( 2.0 )
DieselSmokeEffectInitialSmokeRate( 0.1 )
DieselSmokeEffectMaxSmokeRate( 2.5 )

RPM Change rate ( 45 )

These figures will reduce the smoke levels to something more manageable and visually improved.

[copperpen]

cjakeman, on 19 October 2014 - 10:44 AM, said:

Yes, but if the frame rate dives for the models that Rohit is using, then there is a problem somewhere. It may be the models or it may be that the OR algorithm is too sensitive.

Worth looking into, I think.

I find that if I use an eng that has MSTS settings to produce lots of smoke my FPS drop dramatically, light smoke has no effect at all. I found the same thing when I was fiddling with the particle emission code for steam locomotives, the more particles to process, the lower the FPS became. Unless another method can be found for this process, heavy smoke/steam effects will always do this.

[markus_GE]

IMHO, it´s all a game of finding the right combination of numbers. You don´t necessarily need more particles emitted per second to get more smoke. Especially the nozzle width parameter, and the magnitude ones come into play there too (IDK if the latter are currently supported, yet when I last tested about half a year back, I had the impression they worked).

Basically, a higher nozzle width (third parameter in the Exhaust? block; ? for a number) will give you a bigger plume, and vice versa. Higher magnitude values give you a higher plume, but a less dense one, and so on. Trial and error will probably be the only way to find something useable, as I´m currently not on the very current state of information on how the smoke system works with what. That said, maybe the data provided with the last release of my DPU program can be of some help, but it´s dated, at half a year old, and with all the changes to smoke code done since then.

Cheers, Markus

[Rohit]

Sir,

I am playing with the same models who eng files are given. It is seen that when i drive these locomotives in Or. V 1944 and other experimental versions before it, it is seen that the smoke is mild that it won't reduce the frame rate at all. But when the same locomotive when driven in the recent versions create a huge smokevthat considerably reduce the frame rate to a min. value. I strongly believe that it is the problem with the smoke code. I will release a comparative smoke effect in the earlier and newer versions.

[Rohit]

Sir,

I am playing with the same models who eng files are given. It is seen that when i drive these locomotives in Or. V 1944 and other experimental versions before it, it is seen that the smoke is mild that it won't reduce the frame rate at all. But when the same locomotive when driven in the recent versions create a huge smokevthat considerably reduce the frame rate to a min. value. I strongly believe that it is the problem with the smoke code. I will release a comparative smoke effect in the earlier and newer versions.

[Rohit]

Sir,

Please see the screenshots of the smoke emitted by the same locomotive in OR v 1944 and OR v 2596. it is evident that the locomotive is not the reason for this excessive smoke. it is that of the smoke code. Please see the smoke fume volume and depreciation in frames per second in the new release.

Attached thumbnail(s)

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[Rohit]

Sir,

i still remember that this problem is due to the smoke effect improvement made in the next release just after OR v 1944.