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Overview
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Attributes
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Common Uses
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The Diffuse Render Element is useful for changing the appearance of many passes when it is combined with Raw render passes (like Raw GI, Raw Light, etc.).
In the example below, the Diffuse is multiplied by blended with the Raw Global Illumination Render Element in Multiply mode to provide the Global Illumination 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.
Diffuse x Raw Lighting = Direct Light
Diffuse x Raw Shadow = Shadow
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 center of the upper ring and change its color from yellow to green without also tinting its lighting or shadowing in any way. is used to isolate the cloth on the sofa. The Diffuse Render Element is used to change the cloth's color from yellow to blue. This method avoids tinting the lighting or shadowing of the scene.
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Diffuse Render Element
with color correction on the center of the upper ring
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Underlying Compositing Formulas
Diffuse x Raw Lighting = Direct Lighting
Diffuse x Raw Shadow = Shadow
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