Pramod Kotipalli

Wrong imgtool sample command in transparent-machines scene

1

Hi, the suggested command for converting from an `.exr` file to a `.png` is not valid:  The line in question: https://github.com/mmp/pbrt-v4-scenes/blob/master/transparent-machines/frame1266.pbrt#L5

Timestamps and report generation

1

Hi! I hope these changes are interesting to you (: --