Final Render

Output
Normalized z-buffer
Sample count

Render time 0:27:29. GI with Monte Carlo uniform random sampling, up to two bounces. 16 GI rays at the first bounce, 1 ray on consecutive bounces. Gamma correction. Adaptive 8-64 samples per pixel. Mitchell-Netravali Reconstruction filtering.

Skylight Teapot

Output
Normalized z-buffer
Sample count

Render time 0:04:05.

Machine Specs

Processor 1.4 GHz Intel Core i5
RAM 4 GB 1600 MHz DDR3
Graphics Intel HD Graphics 5000 1536 MB
Software Xcode 9.0 on macOS Sierra 10.12.6