ConstantShader

The ConstantShader node is used to apply a material with constant color to a prim. ConstantShader has no inputs.

To learn more about the workflow, see ConstantShader: Color.

Inputs and Controls

Control (UI)	Knob (Scripting)	Default Value	Function
ConstantShader Tab
Color	color	1	Sets the color of the material applied to the prim.
Opacity	opacity	1	Sets the opacity of the material applied to the prim.
Opacity Premults Color	premult_color	on	Shader premults the color value with the opacity value before using it. This makes the opacity control more intuitive as the color becomes more transparent when opacity is reduced, otherwise the color becomes more additive.
Presence	presence	1	1.0 is 100% presence (ie solid) and 0.0 is 0% presence (ie non-existent). Note that varying presence is only possible for a varying texture source, a constant 50% presence will appear like a change in opacity.
Cutout Enable	cutout_mode_enable	off	Enable cutout (holdout, matte) mode for this surface. If enabled, the surface acts as a cutout for surfaces behind this one. All color and color/matte aov channels produced by this surface are left empty (black, zero) with the exception of depth and other data aov channels which can be controlled separately.
Cutout Data Aovs	cutout_mode_removes_data_aovs	off	If Cutout Enable is on, controls whether the depth and other data aov channels also get cut out. Sometimes keeping depth is desired so that the cutout object will still z-composite, but other times the cutout object is intended to completely remove or delete the objects behind it so the depth and data aovs of this object are also removed.