/* texcoord w/ divide by Q */
const GLuint unit = attr - FRAG_ATTRIB_TEX0;
const GLfloat invQ = solve_plane_recip(fx, fy, line->attrPlane[attr][3]);
/* texcoord w/ divide by Q */
const GLuint unit = attr - FRAG_ATTRIB_TEX0;
const GLfloat invQ = solve_plane_recip(fx, fy, line->attrPlane[attr][3]);