Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] General Discussion => Topic started by: Njen on 2017-12-31, 05:58:55

Title: Large env maps...
Post by: Njen on 2017-12-31, 05:58:55

I just wanted to confirm if there should be a direct correlation to an increase of render time depending on the size of the env map used for lighting/reflections/etc. I have done tests where I used a 1k map vs a 16k map, and on average, the 1k map is about 9% faster.

Does this seem about right?

Title: Re: Large env maps...
Post by: Ondra on 2017-12-31, 10:35:59

yes, it does. Larger map means more cache misses when sampling it

Title: Re: Large env maps...
Post by: Fluss on 2018-02-03, 13:37:12

Also don't use the standard bitmap loader to load the HDRI. Use coronabitmap instead, I experienced almost 40% performance hit by using max bitmap loader