Beauty & Beauty Components AOVs

Beauty AOV

The default AOV is what outputs a "beauty" image:

AOV	Description
rgba (color + alpha)	This variable outputs the color and transparency information of the rendered image. This is also called a beauty render pass. This is the default.

Beauty Components AOVs

The following AOVs can be used to deconstruct the beauty image into several components. They are defined for objects that are shaded by an Hypershade shading network.

AOV

Description

Diffuse

AOV	Description
Ambient	This variable outputs the ambient shading component of the rendered image, producing an ambient render pass RGB image.
Diffuse	This variable outputs the diffuse shading component from direct lighting.producing a RGB image similar to a Maya Render Layer configured to output a diffuse render pass.
Translucence	This variable outputs the translucence shading component of the rendered image, producing a translucence render pass RGB image.

Specular

This variable outputs the specular shading component of the rendered image, producing a RGB image similar to a Maya Render Layer configured to output a specular render pass.

Global Illumination

The following AOVs require the 'Enable Indirect Diffuse' toggle on the render pass to be turned on - see Indirect Illumination - Enable Indirect Diffuse.

AOV	Description
Full Contribution	This variable outputs the "global illumination" variable, which is (Indirect Diffuse + Environment Diffuse), to a RGB image.
Indirect Diffuse	This variable outputs the diffuse shading component of indirect lighting (light being diffused by surrounding objects) to a RGB image.
Environment Diffuse	This variable outputs the diffuse shading component of the environment lighting to a RGB image; it requires a properly configured environment shape to be set in the render pass' 'Environment Light' attribute. See Scene Elements - Environment Light.

Reflections

AOV	Description
Full Contribution	This variable outputs all reflections, which is (Object Reflections + Environment Reflections) to a RGB image.
Object Reflections	This variable outputs what appears in reflections due to raytraced rays that hit surrounding objects to an RGB image.
Environment Reflections	This variable outputs what appears in reflections when raytraced rays hit nothing (i.e. what is controlled by the 'Reflected Color' attribute of the shader). This variable also contains the environment reflections when then render pass has a properly configured environment shape set in the pass' 'Environment Light' attribute (see Scene Elements - Environment Light). This variable output an RGB image.

Refraction

This variable outputs refractions to a RGB image.

Incandescence

This variable outputs the effect of the 'Incandescence' shading attribute to a RGB image.

Subsurface Scattering

This variable outputs the diffuse shading component caused by subsurface scattering to an RGB image.

The images produced by these AOVs can be composited together to re-create the "beauty" image output by 'rgba (color + alpha)'. The various components are additive:

rgba = 
	Diffuse (Full Contribution) + 
	Specular + 
	Global Illumination (Full Contribution) + 
	Reflections (Full Contribution)+ Refraction + 
	Incandescence + 
	Subsurface Scattering

Some of these components can be further broken down, always to additive components, as hinted by the chart organization above:

Diffuse (Full Contribution) = Ambient + Diffuse + Translucence

Global Illumination (Full Contribution) = Indirect Diffuse + Environment Diffuse

Reflections (Full Contribution) = Objects Reflections + Environment Reflections

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