The Diffuse Render Element shows the colors and textures used in materials, flatly applied to objects with no lighting information. The colors are the actual colors set in the material definition, and each texture appears as it does in the texture (file) itself. There are no highlights or shadows, and any background image is not included.
Other render elements that include colors from materials are said to include the diffuse contribution or the diffuse component of the rendered scene. The Diffuse Render Element contributes this diffuse component; any render element that includes this diffuse component is a combination of vrayRE_Diffuse and other render element(s).
Note that the Diffuse Filter Render Element is affected by reflection and refraction combined weight. 1
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This render element is, by itself, useful for making overall adjustments and enhancements to base colors and textures during compositing without effecting things like reflections and highlights.
||Display Render Settings button||> Render Elements tab > Diffuse
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Render (menu) > Render Settings
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> Diffuse
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To use render elements, select from the Available render elements column and click the Add button to add the passes you wish to generate at render time. When you render the scene, the added render elements listed in the column on the right, will also render, which can be viewed from the VFB window's channel drop-down menu.
For more information on the parameters on this dialog, see the Render Elements tab page.
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The parameters for this render element appear in the Attribute Editor under Extra V-Ray Attributes.
Enabled – When enabled, the render element appears in the V-Ray Virtual Frame Buffer.
Deep output – Specifies whether to include this render element in deep images.
Filename suffix – The text added to the end of the rendered file, when saved as a separate file (e.g. myrender.diffuse.vrimg).
Denoise – Enables the render element's denoising, if Denoiser render element is present.
