FillShader

The FillShader node replaces selected material channels with a constant color.

To learn more about the workflow, see FillShader: Cut Out.

Tip:  FillShader's classic 3D system equivalent is the FillMat node.

Inputs and Controls

Connection Type	Connection Name	Function
Input	unnamed	The 2D image you’re using for the surface texture.

Control (UI)	Knob (Scripting)	Default Value	Function
FillShader Tab
Color Channels	channels	rgba	The effect is only applied to these channels. You can use the checkboxes on the right to select individual channels.
Color	color	1	Adjusts the color used as the constant to replace the material.
Opacity Channel	opacity_channel	on, rgba.alpha	Enable channel named to the right. Turning this off is the same as setting the channel to None.
Opacity	opacity	1	Sets the opacity of the material applied to the prim.
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.