Samples for revised render.

Fixed Fresnel reflections and dielectric calculation. Also added confidence level t-tests, per-pixel randomization, and neighbor-based refinement as specified in Cems textbook chapter. Antialiasing is a lot better. Adaptive Sampling with Min Samples of 16 and Max Samples of 64. Variance Threshold of 0.005. Confidence is 95%. Render Time is 6.66393 sec. Tent Filter. Radius: 1.

Adaptive Sampling with Min Samples of 4 and Max Samples of 64. Variance Threshold of 0.0008. Render Time is 2.01365 sec. Lanczos Filter. Radius: 2.

Adaptive Sampling with Min Samples of 4 and Max Samples of 64. Variance Threshold of 0.0008. Render Time is 2.04861 sec. Mitchell-Netravali Filter. Radius: 2.

Adaptive Sampling with Min Samples of 4 and Max Samples of 64. Variance Threshold of 0.0008. Render Time is 2.07739 sec. Gaussian Filter. Radius: 1.5.

Zbuffer.

SampleCountImage. Adaptive Sampling with Min Samples of 4 and Max Samples of 64. Variance Threshold of 0.0008. Render Time is 2.07454 sec.

Adaptive Sampling with Min Samples of 4 and Max Samples of 64. Variance Threshold of 0.0008. Render Time is 2.07454 sec. Tent Filter. Radius: 1.