Lines Matching refs:dv
195 GLfloat vv = (v - map->v1) * map->dv;
217 GLfloat vv = (v - map->v1) * map->dv;
224 GLfloat du[4], dv[4];
226 _math_de_casteljau_surf(map->Points, vertex, du, dv, uu, vv,
235 dv[0] = dv[0]*vertex[3] - dv[3]*vertex[0];
236 dv[1] = dv[1]*vertex[3] - dv[3]*vertex[1];
237 dv[2] = dv[2]*vertex[3] - dv[3]*vertex[2];
241 CROSS3(normal, du, dv);
