Guide to setup sampling

Samples

- Samples per output pixel is to be computed, ie. for value of 2 means one output pixel is filtered from 2x2 = 4 samples, that means GPU have to render the image in 2x resolution ( i.e. 600x600 for 300x300 output image)*

 *Current maximum resolution on GPU is 8192x8192, therefore output size multiplied by render samples cannot exceed this limit. Largest images must be rendered using Tiles see render settins node for details.

- General anti-aliasing

- consumes memory and render time

- recommended to use integral values

Jitter

- extremely effective for high frequency geometry (e.g. hair/fur)

- much lower performance hit than sampling

- automatically disabled when maximum resolution on GPU reached

Multipass Multisampling

- Achieves higher Quality/Antialiasing by rendering the image several times. Trades higher quality for longer rendering times.

- similar effect as samples except textures sampling (with higher resolution - using samples - you can sample also textures in higher resolution)

- consumes only render time, not memory

Recommended Settings Are 2, if necessary 3 samples with jitter and 2 or more multisamples if needed.

1 sample, no jitter and 1 multisample, 2 seconds 355 MB

2 samples, no jiter and 1 multisample, 4 seconds 646 MB

1 sample, jitter enabled and 1 multisample, 2 seconds 409 MB

1 samples, no jiter and 2 multisamples, 4 seconds 355 MB

2 samples, jiter enabled and 2 multisamples, 5 seconds 864 MB

DoF use supersampling attribute

- Can be found in render settings node

- Useful in scenes with high defocus and thin geometry

Without using DoF supersampling

Using DoF supersampling

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