Identifies which shade model to use. The primitive can be drawn with a single color or multiple colors.
| Member | Value | Description |
|---|---|---|
| eStkGraphicsRendererShadeModelFlat | 0 | Flat shading renders the primitive with one color across all of the vertices. |
| eStkGraphicsRendererShadeModelGouraud | 1 | Gouraud shading renders the primitive by interpolating the color between the vertices. |





