TPhotometric lights Slow HD Cache etc

[higgledyhiggles]

Hi,
not sure if it`s a bug or more likely a result of hacking a previous scene. HD Cache takes forever to compute with max standard photometric lights and ies web plus a few omni`s and spots (all turned to Corona shadows). Replacing with Corona lights and  using IES and it becomes nice and fast again. Obviously it`s designed to work better with native lights but maybe defeats the point of making max lights compatible if they slow it all to a crawl ?
checking again seems to be just max photometric lights.

Just an observation, not a complaint or anything.. I expect you know this already..

[higgledyhiggles]

Additional.. again probably a `quirk` or part of the corona light script converter..
I remade the TPhotomentrics as CoronaLights and added an IES.
I then merged some old vray plane lights and ran the corona light converter script, it made them all IES lights when they should be just plane lights. Could be Corona remembers me adding the IES file from before when and adds it subsequently to other new lights or just the converter script messing up.
Mentioned just in case..

Just created a new Corona Light in a different scene and it added the same IES file from before. Good/Bad ? Not sure, could save time for some scenes or be a pain if creating a bunch of different lights.

[Ondra]

How many of the lights do you have in the scene? And how are their area light shadows set up

[higgledyhiggles]

91 lights, point shape area..
yup that`s definitely it. Point Shape causes the slow down. Switch to Sphere and all is well.

[Ondra]

ok, problem is that currently the 3dsmax lights behave in corona like in mental ray/vray (more lights = slower rendering). I will probably switch them to corona-style (more lights = same time, maybe little bit more noise) in the future.

[NicoB]

Hi,

I have some kind of the same problem.
Can you tell, what you have done to get
the render speed back when using
max photometric lights?

Turning light shape to sphere causes the light
to get Off in my scene..(?)

Cheers,
Nico