(bind-func xtm_draw_tri (lambda (x1 y1 x2 y2 x3 y3) (let ((path (xtm_create_path)) (vgu_err (xtm_add_tri path x1 y1 x2 y2 x3 y3))) (if (= vgu_err VGU_NO_ERROR) (xtm_draw_path path)) void)))