internal abstract void glMaterial(GLFace face, GLMaterialParameter pname, int *param);
internal abstract void glColorMaterial(GLFace face, GLMaterialParameter mode);
public static extern void glMaterialfv(GLFace face, GLMaterialParameter pname, float *param);
public static extern void glMaterialiv(GLFace face, GLMaterialParameter pname, int *param);
public static extern void glColorMaterial(GLFace face, GLMaterialParameter mode);