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Excerpt

Live Render CoarsenessView

This option is for selecting the window or application that will be used to display the image layers while they are rendered during a normal or a live renderIn order to provide a quick feedback and allow interactive manipulations, 3Delight's live renders always start with a very coarse image and refines its quality through a few iterations, each iteration taking increasingly more time. The Live Render Coarseness option simply enables you to select the lowest quality (coarseness) the live renders starts with. More coarseness (larger pixels) provides faster frame rate during interactive manipulation at the expense of quality. The available options are 8, 6, 4, 2 pixels. The default is 8 pixels, favouring interactive responsiveness (particularly during camera manipulation). Users are encouraged to try less coarseness based on the interactive work they do and also based on the performance of their workstation.

Scanning

An image is rendered gradually in small groups of pixels called buckets. This option allows you to specify in what order the buckets are rendered. It applies to both normal and live renders. The default scanning is Circle. The available options are:

OptionDescription
HorizontalThe buckets Buckets are rendered row by row, from left to right and from top to bottom.
VerticalThe buckets Buckets are rendered column by column, from top to bottom, and from left to right.
ZigzagThe buckets Buckets are rendered row by row, from left to right on even rows, and from right to left on odd rows.
SpiralThe buckets Buckets are rendered in a clockwise spiral starting at the centre of the image.
CircleThe buckets Buckets are rendered in concentric circles starting at the centre of the image. 

Progressive RenderRefinement

This options applies to normal renders only. It does not apply to Live Render (IPR) – a separate rendering technique allowing interactive manipulations with a different progressive approach. For normal renders, when this toggle is turned on, the rendering rapidly starts with a noisy image and refines it progressively until completed. Progressive Render Refinement has a slight overhead and may increase render time in the order of to complete the image by about 5 - 10% to complete this image. 

Warning

Because of possible optimisations, images produced using this option may contain more noise / fireflies and differ slightly from renders without progressive rendersrefinements.

And as a reminder: images produce produced through batch rendering are not rendered using progressive rendersrefinements, regardless of this user preference.


Info

When using Progressive RenderRefinement, the Filter Type and Filter Width attributes (specified in the quality group of options of the rendering settings) are ignored in the initial rendering iterations. A simple Box filter with a width of 1 is used instead.


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