Definition of MAX_VERTEX_UNIFORM_VECTORS with respect to Mat4s?
According to the OpenGLES spec all implementations are guaranteed to support at least 128 elements in a uniform vector array:
MAX VERTEX UNIFORM VECTORS 128 GetIntegerv
How does that translate to Mat4's? Is a Mat4 considered a kind of vector (like a 16-dimensional vector) or should you divide 128 by four to get the max number of elements in a Mat4 uniform array?