czm_materialInput
Used as input to every material's czm_getMaterial function.
Properties:
| Name | Type | Description | 
|---|---|---|
| s | float | 1D texture coordinates. | 
| st | vec2 | 2D texture coordinates. | 
| str | vec3 | 3D texture coordinates. | 
| normalEC | vec3 | Unperturbed surface normal in eye coordinates. | 
| tangentToEyeMatrix | mat3 | Matrix for converting a tangent space normal to eye space. | 
| positionToEyeEC | vec3 | Vector from the fragment to the eye in eye coordinates. The magnitude is the distance in meters from the fragment to the eye. | 
