Background mode in more working conditions.

What works:
The usual command line options for rendering.
All python scripts are loaded (which includes custom properties)
Render engines are loaded and can be used
-P to run scripts works partially: rna api works ok, not operators.

What doesn't: 
Most operator calls in python. This is a problem with poll functions. (Brecht and Campbell are aware of this already)

Changes:
-d now also applied with -b (it was ignored before)
user file (.B25.blend) now also loaded in bg mode. This helps for custom paths and all.
wm is also initialized (it's needed for a lot of context calls)
Ghost, however, is not initialized.

source/blender/windowmanager/WM_api.h

@@ -52,6 +52,9 @@ void		WM_init				(struct bContext *C);
 void		WM_exit				(struct bContext *C);
 void		WM_main				(struct bContext *C);
 
+
+void		WM_check			(struct bContext *C);
+
 struct wmWindow	*WM_window_open	(struct bContext *C, struct rcti *rect);
 
 			/* defines for 'type' WM_window_open_temp */

source/blender/windowmanager/intern/wm.c

@@ -43,6 +43,7 @@
 #include "BKE_main.h"
 #include "BKE_screen.h"
 #include "BKE_report.h"
+#include "BKE_global.h"
 
 #include "WM_api.h"
 #include "WM_types.h"
@@ -196,7 +197,7 @@ void WM_keymap_init(bContext *C)
 	WM_keyconfig_userdef(wm);
 }
 
-void wm_check(bContext *C)
+void WM_check(bContext *C)
 {
 	wmWindowManager *wm= CTX_wm_manager(C);
 	
@@ -208,19 +209,21 @@ void wm_check(bContext *C)
 	if(wm==NULL) return;
 	if(wm->windows.first==NULL) return;
 
-	/* case: fileread */
-	if((wm->initialized & WM_INIT_WINDOW) == 0) {
-		WM_keymap_init(C);
-		WM_autosave_init(C);
-	}
-	
-	/* case: no open windows at all, for old file reads */
-	wm_window_add_ghostwindows(wm);
-	
-	/* case: fileread */
-	if((wm->initialized & WM_INIT_WINDOW) == 0) {
-		ED_screens_initialize(wm);
-		wm->initialized |= WM_INIT_WINDOW;
+	if (!G.background) {
+		/* case: fileread */
+		if((wm->initialized & WM_INIT_WINDOW) == 0) {
+			WM_keymap_init(C);
+			WM_autosave_init(C);
+		}
+
+		/* case: no open windows at all, for old file reads */
+		wm_window_add_ghostwindows(wm);
+
+		/* case: fileread */
+		if((wm->initialized & WM_INIT_WINDOW) == 0) {
+			ED_screens_initialize(wm);
+			wm->initialized |= WM_INIT_WINDOW;
+		}
 	}
 }
 

source/blender/windowmanager/intern/wm_files.c

@@ -256,8 +256,8 @@ void WM_read_file(bContext *C, char *name, ReportList *reports)
 		G.save_over = 1;
 
 		/* match the read WM with current WM */
-		wm_window_match_do(C, &wmbase); 
-		wm_check(C); /* opens window(s), checks keymaps */
+		wm_window_match_do(C, &wmbase);
+		WM_check(C); /* opens window(s), checks keymaps */
 		
 // XXX		mainwindow_set_filename_to_title(G.main->name);
 
@@ -322,7 +322,7 @@ int WM_read_homefile(bContext *C, wmOperator *op)
 	
 	/* match the read WM with current WM */
 	wm_window_match_do(C, &wmbase); 
-	wm_check(C); /* opens window(s), checks keymaps */
+	WM_check(C); /* opens window(s), checks keymaps */
 
 	strcpy(G.sce, scestr); /* restore */
 	

source/blender/windowmanager/intern/wm_init_exit.c

@@ -108,8 +108,10 @@ static void wm_free_reports(bContext *C)
 void WM_init(bContext *C)
 {
 	
-	wm_ghost_init(C);	/* note: it assigns C to ghost! */
-	wm_init_cursor_data();
+	if (!G.background) {
+		wm_ghost_init(C);	/* note: it assigns C to ghost! */
+		wm_init_cursor_data();
+	}
 	wm_operatortype_init();
 	
 	set_free_windowmanager_cb(wm_close_and_free);	/* library.c */
@@ -130,10 +132,12 @@ void WM_init(bContext *C)
 	WM_read_homefile(C, NULL);
 	
 	wm_init_reports(C); /* reports cant be initialized before the wm */
-	
-	GPU_extensions_init();
 
-	UI_init();
+	if (!G.background) {
+		GPU_extensions_init();
+	
+		UI_init();
+	}
 	
 	//	clear_matcopybuf(); /* XXX */
 	

source/blender/windowmanager/intern/wm_window.c

@@ -335,7 +335,7 @@ static void wm_window_add_ghostwindow(wmWindowManager *wm, char *title, wmWindow
 
 /* for wmWindows without ghostwin, open these and clear */
 /* window size is read from window, if 0 it uses prefsize */
-/* called in wm_check, also inits stuff after file read */
+/* called in WM_check, also inits stuff after file read */
 void wm_window_add_ghostwindows(wmWindowManager *wm)
 {
 	wmKeyMap *keymap;
@@ -403,7 +403,7 @@ wmWindow *WM_window_open(bContext *C, rcti *rect)
 	win->drawmethod= -1;
 	win->drawdata= NULL;
 	
-	wm_check(C);
+	WM_check(C);
 	
 	return win;
 }
@@ -448,7 +448,7 @@ void WM_window_open_temp(bContext *C, rcti *position, int type)
 	
 	/* make window active, and validate/resize */
 	CTX_wm_window_set(C, win);
-	wm_check(C);
+	WM_check(C);
 	
 	/* ensure it shows the right spacetype editor */
 	sa= win->screen->areabase.first;
@@ -480,7 +480,7 @@ void WM_window_open_temp(bContext *C, rcti *position, int type)
 int wm_window_duplicate_op(bContext *C, wmOperator *op)
 {
 	wm_window_copy(C, CTX_wm_window(C));
-	wm_check(C);
+	WM_check(C);
 	
 	return OPERATOR_FINISHED;
 }

source/blender/windowmanager/wm.h

@@ -44,7 +44,6 @@ extern void wm_close_and_free(bContext *C, wmWindowManager *);
 extern void wm_close_and_free_all(bContext *C, ListBase *);
 
 extern void wm_add_default(bContext *C);
-extern void wm_check(bContext *C);
 extern void wm_clear_default_size(bContext *C);
 			
 			/* register to windowmanager for redo or macro */

source/creator/creator.c

@@ -508,6 +508,27 @@ int main(int argc, char **argv)
 #endif
 	}
 	else {
+		for(a=1; a<argc; a++) {
+			if(argv[a][0] == '-') {
+				switch(argv[a][1]) {
+				case 'd':
+					G.f |= G_DEBUG;		/* std output printf's */
+					printf ("Blender %d.%02d (sub %d) Build\n", BLENDER_VERSION/100, BLENDER_VERSION%100, BLENDER_SUBVERSION);
+					MEM_set_memory_debug();
+#ifdef NAN_BUILDINFO
+					printf("Build: %s %s %s %s\n", build_date, build_time, build_platform, build_type);
+
+#endif // NAN_BUILDINFO
+					for (i = 0; i < argc; i++) {
+						printf("argv[%d] = %s\n", i, argv[i]);
+					}
+					break;
+				}
+			}
+		}
+
+		WM_init(C);
+
 #ifndef DISABLE_PYTHON
 		BPY_start_python(argc, argv);
 #endif		
@@ -524,13 +545,11 @@ int main(int argc, char **argv)
 	 */
 	BPY_post_start_python();
 
-	if(!G.background)
-		BPY_run_ui_scripts(C, 0); /* dont need to reload the first time */
+	BPY_run_ui_scripts(C, 0); /* dont need to reload the first time */
 #endif
 	
 	CTX_py_init_set(C, 1);
-	if(!G.background)
-		WM_keymap_init(C); /* after BPY_run_ui_scripts() */
+	WM_keymap_init(C); /* after BPY_run_ui_scripts() */
 
 #ifdef WITH_QUICKTIME
 
@@ -843,7 +862,11 @@ int main(int argc, char **argv)
 				
 				/*we successfully loaded a blend file, get sure that
 				pointcache works */
-				if (retval!=0) G.relbase_valid = 1;
+				if (retval!=0) {
+					CTX_wm_manager_set(C, NULL); /* remove wm to force check */
+					WM_check(C);
+					G.relbase_valid = 1;
+				}
 
 				/* happens for the UI on file reading too (huh? (ton))*/
 // XXX			BKE_reset_undo();