Creates a new, single component, attribute whose value remains constant across all the vertices of a primitive without needing to duplicate the value for each vertex.
The constant value is a single precision floating point scalar which should have a corresponding declaration in GLSL code
like:
[| attribute float name; |]
| context |
A Context |
| name |
The name of the attribute (used to reference it from GLSL) |
| value |
The constant value for the attribute |
|
A newly allocated Attribute representing the given constant |