- gaw_matrix_mode(GAW_MODELVIEW);
- gaw_load_identity();
- gaw_translate(0, 0, -cam_dist);
- gaw_rotate(cam_phi, 1, 0, 0);
- gaw_rotate(cam_theta, 0, 1, 0);
- gaw_get_modelview(view_matrix);
- cgm_mcopy(view_matrix_inv, view_matrix);
- cgm_minverse(view_matrix_inv);
-
- draw_grid();
-
- num = scn_num_objects(scn);
- for(i=0; i<num; i++) {
- setup_material(scn->objects[i]->mtl);
-
- if(i == selobj) {
- gaw_zoffset(1);
- gaw_enable(GAW_POLYGON_OFFSET);
- draw_object(scn->objects[i]);
- gaw_disable(GAW_POLYGON_OFFSET);
-
- gaw_save();
- gaw_disable(GAW_LIGHTING);
- gaw_poly_wire();
- gaw_color3f(0, 1, 0);
- draw_object(scn->objects[i]);
- gaw_poly_gouraud();
- gaw_restore();
- } else {
- draw_object(scn->objects[i]);
+ /* viewport */
+ if(vpdirty) {
+ gaw_clear(GAW_COLORBUF | GAW_DEPTHBUF);
+
+ gaw_matrix_mode(GAW_MODELVIEW);
+ gaw_load_identity();
+ gaw_translate(0, 0, -cam_dist);
+ gaw_rotate(cam_phi, 1, 0, 0);
+ gaw_rotate(cam_theta, 0, 1, 0);
+ gaw_get_modelview(view_matrix);
+ cgm_mcopy(view_matrix_inv, view_matrix);
+ cgm_minverse(view_matrix_inv);
+
+ draw_grid();
+
+ num = scn_num_objects(scn);
+ for(i=0; i<num; i++) {
+ setup_material(scn->objects[i]->mtl);
+
+ if(i == selobj) {
+ gaw_zoffset(1);
+ gaw_enable(GAW_POLYGON_OFFSET);
+ draw_object(scn->objects[i]);
+ gaw_disable(GAW_POLYGON_OFFSET);
+
+ gaw_save();
+ gaw_disable(GAW_LIGHTING);
+ gaw_poly_wire();
+ gaw_color3f(0, 1, 0);
+ draw_object(scn->objects[i]);
+ gaw_poly_gouraud();
+ gaw_restore();
+ } else {
+ draw_object(scn->objects[i]);
+ }