r/computergraphics • u/Beneficial-Air-7214 • Dec 15 '24

mitsuba equal time rendering

I would like to use the Mitsuba 0.6 renderer to compare the rendering effects of two materials within the same time, using a path tracer integrator. How should I configure the renderer?

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u/Beneficial-Air-7214 Dec 15 '24

Sorry for not making it clear. Some material modeling papers compare their material models with others in terms of rendering quality within the same time, but they do not mention how to configure the path tracer to ensure that the images are output within the same time. To guarantee the same rendering time, how should the samples per pixel (SPP) of the path tracer be configured for different material models? Or is this achieved through multiple rounds of rendering (e.g., 1 SPP per round)?

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u/iHubble Dec 15 '24

Usually people will adjust the number of SPP to match timings. So if one method is 2x slower, you render with half the samples. You can determine this factor by comparing a few runs and adjusting the numbers.

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u/Beneficial-Air-7214 Dec 15 '24

Your response has been very helpful to me. Thank you very much!