private boolean isValidNumber(FloatBuffer fb) {
        for(int i = 0; i < fb.limit(); i++) {
            if (!isValidNumber(fb.get(i))) return false;
        }
        return true;
    }
Update the location of the specified Uniform in the specified Shader.

@param shader the Shader containing the Uniform (not null)
@param uniform the Uniform to update (not null)
jme3-core/src/main/java/com/jme3/renderer/opengl/GLRenderer.java