Source position: gl.pp line 1293
var glMap2f: procedure(
target: GLenum;
u1: GLfloat;
u2: GLfloat;
ustride: GLint;
uorder: GLint;
v1: GLfloat;
v2: GLfloat;
vstride: GLint;
vorder: GLint;
const points: PGLfloat
);