James Ross, on 06 June 2015 - 06:53 AM, said:
I definitely want lots more particles (or the appearance thereof) though; we currently use particles/second/m^2 values up to 0.01 (and you've gone up to 0.70) but according to my figures heavy rain equates to something in the region of 60: heavy rain is 0.0073m/h and a large raindrop is 4mm diameter, which is 0.0000000335m^3, so we have 0.0073 / 3600 / 0.0000000335 = 60.5 particles/second/m^2.
James,
Now that Carlos has submitted his project, I have been able to get back to fine tuning certain values. You are correct in that the values I have been testing with have been quite high. Keep in mind that I have been testing with them. What do you think the effective value should be for MaxIntensity? 16bit value will always be 0.015f. For 32bit, I brought it down to 0.030f. The default values that Carlos is using for pricipitationIntensityPPSPM2 is 0.010f.
I just recently found out from Carlos that since his system is unable to take advantage of LAA, the 32bit value was definitely too high. Testing at 0.030f with no LAA has resulted in no errors. At this point, there is nothing else that I can do on my end. If you wanted to improve the look of precipitation without touching MaxIntensity, graphics would probably be the way to do it, but like Carlos, graphics is not my area.
Personal observations:
I have been testing snow at 0.0075f and it still looks quite good. Rain on the other hand needs work and this is still using the additional drops that were included.
Using snow as the example. It appears that the falling precipitation is better when further away from the train. Around the train it appears rather thin.
Edward K.