irradiance for animation

[Crazy Homeless Guy]

i render my irradiance maps at 720x540 every 20 frames, with the average spanse being around 750 frames. so typically one of my irradiance maps have app. 25 frames in it. on average the file size of my maps are 4 megs. i use these irradiance settings, which were hijacked from a long lost thread.

 

http://www.phase22.com/temp/irradiance_settings.gif

 

i turn off reflections, and antialiasing while rendering irradiance maps.

[Crazy Homeless Guy]

Thanks for info and posting those settings. I didnt turn off reflections so maybe was this the problem with the big file. I will make a try to check this.

 

i don't know if reflections decrease file size, but it certainly decreases the calculation time. it probably effects the solution quality to some extent, but it is an easy trade off for the time savings.

[Crazy Homeless Guy]

To CHG:

me again

 

i am turning off reflections when calculating the irmap as u said and the objects with mirror mat on them are washed out. Do you know why is this? The render look like a bad irmap was computed, but tryed that many times and with different files and have the same problem.

not sure. if the times are not to long with them on, then try it that way. one thing that will happen... with reflections off... if you have a mirror or something similar reflecting a side of the room that your camera does not look at, then that area will not be processed in your irradiance map calculation. i get around this by shooting a couople of shots looking at the wall to be reflected,then combining the irradiance maps togeher into one file before rendering.

 

turning the reflection off is not recomended. if you can afford the calculation times with them on, then leave them on. i turn them off because i am impatient, and typically crunched for time.

 

but back to the main question... i have never had a mirror or reflective surface blowout by doing this, so i am not sure.