This page provides information about the Sample Render Element in V-Ray for Cinema 4D.
Overview
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The Sample Rate Render Element displays the work being done by the image sampler as a red, green, and blue image. This render element displays the work being done on the image as it is rendering, and will show the job done when process while rendering is done and once the render completes.
A color is assigned to each pixel according to how many primary samples are being taken by the Image the Image Sampler:
The Blue channel channel contains the areas which that reached the desired image quality with few primary samples.
The Green channel channel shows areas which required that require more antialiasing (AA) samples to clean up than the Blue areas , but managed to achieve the the Noise Threshold within the number of AA rays used.
The Red channel channel contains the parts of the image which that didn't make it to reach the desired quality threshold, as they reached got to the maximum amount of AA rays before reaching the the Noise Threshold.
If the Image Sampler type is Progressive, the White areas will represent the areas the sampler is currently working on, as they were found to not satisfy the Noise Threshold as of yet.
The way to ensure a render is correctly computed is to minimize the amount of red color in this render element. Raising Raising secondary sampling through any means will reduce the primary sampling work in the corresponding areas, effectively moving red areas into green ones , and green ones into blue ones. Lowering secondary samples per pixel will do the opposite, potentially leading to more red areas. The The suggested way to minimize the red color and optimize render times is to increase the the Max Subdivs value value (if the previous render was still noisy) , or increase the Noise Threshold value value (if the previous render was clean , but took too long to complete).
Note that some specific image features, like high-frequency detail often found in fur and hair , or high-contrast zones, will likely always try to reach the maximum sampling, so some red will appear there. This is perfectly normal and doesn't slow down the rest of the rendering while ensuring the problematic parts of the image will clean up as per the user's settings.
UI Path: ||V-Ray|| > Render Elements > Sample Rate
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How to add a render element to a scene
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Enable Deep Output – Specifies whether to include this render element in deep images.
Color Mapping – Applies the color mapping options specified in theColor mappingMapping rollout of the V-Ray tab in the Render Settings window to this render element.
Consider for Anti-Aliasing – When enabled, anti-aliasing is used where possible.
Filtering – Applies an image filter to this channel.
Derive Raw Channels – Generates data in the raw channels by combining the respective color and the filter color channels.
Vfb Color Corrections – Applies the post-render color adjustments made from the VFB.
Denoise – Enables the render element's denoising, provided the Denoiser is enabled.
