basicMat

SDF Shape

Base Color Field

material

basicMat

RayTK

v0.42

Material with a basic lighting model.

The material combines several elements to determine the color of a given surface point.

First, the base color uses the Basecolor parameter and optionally the Base Color Field input. Next, the specular color uses the color and relative position of the light. Third, the “Sky” color acts as a simple pseudo light, that uses the surface normal but doesn’t support shadows.

Parameters

Name	Description	Regular Handling	Read-Only Handling
Enable
Base Color		Runtime	Baked
Sky Color	Color of the “sky” pseudo-light.	Runtime	Baked
Sky Amount	Amount of “sky” light to apply.
Sky Direction	Vector of the direction where the “sky” light comes from.	Runtime	Baked
Specular Amount	Amount of specular light color to apply.	Runtime	Baked
Specular Exponent	Controls the sharpness of the specular color rolloff.	Runtime	Baked
Enable Shadow	Whether to use shadows. If this is enabled, and the Shadow input is connected, that type of shadow is used. If it is enabled but that input is not connected, the default shadow is used.	Baked	Baked
Use Local Position	Whether to use the “local” position relative to the input shape when looking up colors using the Base Color Field input. If enabled, the coordinates used for the color field will be “before” any downstream transformations are applied. When disabled, the final global position where a point ends up in the render is used instead.	Baked	Baked
Use Surface Color		Baked	Baked
Apply When		Runtime	Baked
Always: Only If Unassigned:

Inputs

• SDF Shape: (required)
  • Coordinate Types: vec3
  • Context Types: Context
  • Return Types: Sdf
• Base Color Field: (optional)
  • Coordinate Types: vec3
  • Context Types: MaterialContext
  • Return Types: float vec4
  • Supports Variables: lightcolor lightpos surfacecolor surfaceuv normal

Variables

• Light Color:
• Light Position:
• Surface Color (r, g, b, is set):
• Surface UV (u, v, w, is set):
• Surface Normal: