This page describes the Diffuse Render Element and how it is used to have more control of a final composited image.
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UI Path: ||Toolbar|| > V-Ray Menu icon > Render > VRayRenderElement > Type: Diffuse
The Diffuse render element has no controllable properties.
The Diffuse Render Element is useful for changing the appearance of many passes when it is combined with Raw render passes (like GI Raw, Light Raw, etc.). In the example below, the Diffuse is multiplied by the GI Raw Render Element to provide the GI pass. In this way, color correction can be performed upon the raw pass without the actual diffuse colors being changed, making it possible to tint a pass in a realistic way without re-rendering.
The Diffuse is a very useful render element due to the number of raw passes with which it can be combined, giving the ability to manipulate many areas of the render at the composite level. The Diffuse pass can also be color-corrected on its own, as shown in the example below. In this case, a Multi Matte Render Element was used in conjunction with the Diffuse Render Element to isolate the green painted metal parts and change their color from green to blueish without also tinting its lighting or shadowing in any way.
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Diffuse Render Element
with blue painted metal parts
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