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The following plot gives us a good idea on the algorithm sophistication of the different light samplers.

The following plot gives us a good idea the time required to achieve a certain quality. From the user perspective, this is an important quantity.

The following chart shows how much time it takes for each renderer to build the light acceleration data structure depending on sample count.

Chart

Rays	2.45	3.13	4.51	7.27	12.78	23.8	45.88	90.1
3Delight	0.0933142	0.0658266	0.0441248	0.0290439	0.0185575	0.0117566	0.00752546	0.00449892

Rays	0.678	3.26	10.8	16.94	43.4	173.6	694.5
Arnold	0.15699	0.100115	0.0501787	0.0396399	0.0242515	0.0117413	0.00693426

Rays	1.47	2.94	5.88	11.7	21.1	47.02	94.14	376.3	751.3
RenderMan/RIS	0.151125	0.121487	0.0953649	0.0728148	0.0520606	0.0373876	0.0265388	0.0138148	0.00854045

The following plot gives us a good idea the time required to achieve a certain quality. From the user perspective, this is an important quantity.

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Chart

Time	5.72s	8	12.82	22.18	40.92	86.91	165.69	302.98
3Delight	0.0933142	0.0658266	0.0441248	0.0290439	0.0185575	0.0117566	0.00752546	0.00449892

Time	1	2	6	9	21	81	492
Arnold	0.15699	0.100115	0.0501787	0.0396399	0.0242515	0.0117413	0.00693426

Time	6.74	7.23	7.99	9.42	18.51	29.40	98.08	383.39
RenderMan/RIS	0.151125	0.121487	0.0953649	0.0728148	0.0373876	0.0265388	0.0138148	0.00854045

Chart

width	800
domainAxisUpperBound	300
title	Time to First Pixel vs. Samples
type	xyLine
yLabel	Time to First Pixel
domainAxisLowerBound	0
rangeAxisUpperBound	50
xLabel	Million Rays

Rays	2.45	3.13	4.51	7.27	12.78	23.8	45.88	90.1
3Delight	2	2	2	2	2	2	2	2

Rays	0.678	3.26	10.8	43.4	173.6	694.5
Arnold	0	0.35	1.2	3.2	11	41

Rays	1.47	2.94	5.88	11.7	47.02	94.14	376.3	751.3
RenderMan	3	3.2	4	4.7	9	15.5	51.2	97

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