Untitled


Exam
        - Based on the orange book
        - what do the names in, out, varying, uniform, in both fragment and vertex shader.
        - what are uniform variables? - passed in from client code and does not change between vertices
        - attribute keyword - a uniform that varies across vertices.
        - Would you bring the current time in as a uniform or an attribute?


        default attributes that you get
                - vertex position, colour, normal

        Vector of velocities? attribute!

        attributes are variables which come in on a per vertex basis

        whats the difference between sampler1D, sampler2D and sampler3D - a texture of X dimensions

        texture, textureGrad, -  all texture calls.

        reflect, - takes 2 args - incoming vector, the normal - returns back reflected vector
        refract  - takes angle of incidence, normal, ratio of the index of refraction - returns refracted vector