Question about save and load environment map

[cdfan0627]

I'd like to ask if, after saving the environment map with the code below and then loading it back, the environment map obtained is different from the original one.

[jmunkberg]

Hello @cdfan0627 ,

There will be minor differences due to the latlong<->cubemap conversions. Also note that the resolutions are hardcoded above: The cubemap resolution is hardcoded to 512x512 and when saving out the image back as a latlong image, the resolution is hardcoded to [512,1024].

To minimize the differences, ensure that the cubemap resolution is sufficient for your probe and that you save the environment map as the same resolution as you started with (e.g., if your original map was a 2k probe, use the same resolution when saving the map back out).

Finally, note that there is an optional scale parameter when loading the probe.