useConstantColor
A Boolean value that indicates whether or not to use the constant color.
Declaration
var useConstantColor: GLboolean { get set }Discussion
If the value is set to GL_TRUE, then the value stored in the constantColor property is used as the color value for each vertex. If the value is set to GL_FALSE, then your application is expected to enable the GLKVertexAttrib.color attribute and provide per-vertex color data. The default value is GL_FALSE.