Ensure mat/tex/etc. previews are generated/saved in .blend files when enabled in userprefs.

Reviewers: campbellbarton

Differential Revision: https://developer.blender.org/D970

source/blender/editors/include/ED_render.h

@@ -72,6 +72,7 @@ void ED_preview_init_dbase(void);
 void ED_preview_free_dbase(void);
 
 void ED_preview_shader_job(const struct bContext *C, void *owner, struct ID *id, struct ID *parent, struct MTex *slot, int sizex, int sizey, int method);
+void ED_preview_icon_render(const struct bContext *C, void *owner, struct ID *id, unsigned int *rect, int sizex, int sizey);
 void ED_preview_icon_job(const struct bContext *C, void *owner, struct ID *id, unsigned int *rect, int sizex, int sizey);
 void ED_preview_kill_jobs(struct wmWindowManager *wm, struct Main *bmain);
 

source/blender/editors/include/UI_interface_icons.h

@@ -33,6 +33,7 @@
 #define __UI_INTERFACE_ICONS_H__
 
 struct bContext;
+struct ID;
 struct Image;
 struct ImBuf;
 struct World;
@@ -63,6 +64,8 @@ void UI_icons_init(int first_dyn_id);
 int UI_icon_get_width(int icon_id);
 int UI_icon_get_height(int icon_id);
 
+void UI_id_icon_render(const struct bContext *C, struct ID *id, const bool big, const bool use_job);
+
 void UI_icon_draw(float x, float y, int icon_id);
 void UI_icon_draw_preview(float x, float y, int icon_id);
 void UI_icon_draw_preview_aspect(float x, float y, int icon_id, float aspect);

source/blender/editors/interface/interface_icons.c

@@ -931,7 +931,7 @@ static void icon_create_rect(struct PreviewImage *prv_img, enum eIconSizes size)
 
 /* only called when icon has changed */
 /* only call with valid pointer from UI_icon_draw */
-static void icon_set_image(const bContext *C, ID *id, PreviewImage *prv_img, enum eIconSizes size)
+static void icon_set_image(const bContext *C, ID *id, PreviewImage *prv_img, enum eIconSizes size, const bool use_job)
 {
 	if (!prv_img) {
 		if (G.debug & G_DEBUG)
@@ -941,8 +941,14 @@ static void icon_set_image(const bContext *C, ID *id, PreviewImage *prv_img, enu
 
 	icon_create_rect(prv_img, size);
 
-	ED_preview_icon_job(C, prv_img, id, prv_img->rect[size],
+	if (use_job) {
-	                    prv_img->w[size], prv_img->h[size]);
+		/* Job (background) version */
+		ED_preview_icon_job(C, prv_img, id, prv_img->rect[size], prv_img->w[size], prv_img->h[size]);
+	}
+	else {
+		/* Immediate version */
+		ED_preview_icon_render(C, prv_img, id, prv_img->rect[size], prv_img->w[size], prv_img->h[size]);
+	}
 }
 
 PreviewImage *UI_icon_to_preview(int icon_id)
@@ -1149,25 +1155,25 @@ static void icon_draw_size(float x, float y, int icon_id, float aspect, float al
 	}
 }
 
-static void ui_id_preview_image_render_size(const bContext *C, ID *id, PreviewImage *pi, int size)
+static void ui_id_preview_image_render_size(const bContext *C, ID *id, PreviewImage *pi, int size, const bool use_job)
 {
 	if ((pi->changed[size] || !pi->rect[size])) { /* changed only ever set by dynamic icons */
 		/* create the rect if necessary */
-		icon_set_image(C, id, pi, size);
+		icon_set_image(C, id, pi, size, use_job);
 
 		pi->changed[size] = 0;
 	}
 }
 
-static void ui_id_icon_render(const bContext *C, ID *id, const bool big)
+void UI_id_icon_render(const bContext *C, ID *id, const bool big, const bool use_job)
 {
 	PreviewImage *pi = BKE_previewimg_get(id);
 
 	if (pi) {
 		if (big)
-			ui_id_preview_image_render_size(C, id, pi, ICON_SIZE_PREVIEW);  /* bigger preview size */
+			ui_id_preview_image_render_size(C, id, pi, ICON_SIZE_PREVIEW, use_job);  /* bigger preview size */
 		else
-			ui_id_preview_image_render_size(C, id, pi, ICON_SIZE_ICON);     /* icon size */
+			ui_id_preview_image_render_size(C, id, pi, ICON_SIZE_ICON, use_job);     /* icon size */
 	}
 }
 
@@ -1183,7 +1189,7 @@ static void ui_id_brush_render(const bContext *C, ID *id)
 		/* check if rect needs to be created; changed
 		 * only set by dynamic icons */
 		if ((pi->changed[i] || !pi->rect[i])) {
-			icon_set_image(C, id, pi, i);
+			icon_set_image(C, id, pi, i, false);
 			pi->changed[i] = 0;
 		}
 	}
@@ -1259,7 +1265,7 @@ int ui_id_icon_get(const bContext *C, ID *id, const bool big)
 		case ID_LA: /* fall through */
 			iconid = BKE_icon_getid(id);
 			/* checks if not exists, or changed */
-			ui_id_icon_render(C, id, big);
+			UI_id_icon_render(C, id, big, true);
 			break;
 		default:
 			break;

source/blender/editors/render/render_preview.c

@@ -1098,6 +1098,26 @@ static void icon_preview_free(void *customdata)
 	MEM_freeN(ip);
 }
 
+void ED_preview_icon_render(const bContext *C, void *UNUSED(owner), ID *id, unsigned int *rect, int sizex, int sizey)
+{
+	IconPreview ip = {0};
+	short stop = false, update = false;
+	float progress = 0.0f;
+
+	/* customdata for preview thread */
+	ip.scene = CTX_data_scene(C);
+	ip.owner = id;
+	ip.id = id;
+
+	icon_preview_add_size(&ip, rect, sizex, sizey);
+
+	icon_preview_startjob_all_sizes(&ip, &stop, &update, &progress);
+
+	icon_preview_endjob(&ip);
+
+	BLI_freelistN(&ip.sizes);
+}
+
 void ED_preview_icon_job(const bContext *C, void *owner, ID *id, unsigned int *rect, int sizex, int sizey)
 {
 	wmJob *wm_job;

source/blender/windowmanager/intern/wm_files.c

@@ -101,6 +101,7 @@
 #include "GHOST_Path-api.h"
 
 #include "UI_interface.h"
+#include "UI_interface_icons.h"
 #include "UI_view2d.h"
 
 #include "GPU_draw.h"
@@ -894,6 +895,23 @@ bool write_crash_blend(void)
 	}
 }
 
+static void wm_ensure_previews(bContext *C, Main *mainvar)
+{
+	ListBase *lb[] = {&mainvar->mat, &mainvar->tex, &mainvar->image, &mainvar->world, &mainvar->lamp, NULL};
+	ID *id;
+	int i;
+
+	for (i = 0; lb[i]; i++) {
+		for (id = lb[i]->first; id; id = id->next) {
+			/* Only preview non-library datablocks, lib ones do not pertain to this .blend file! */
+			if (!id->lib) {
+				UI_id_icon_render(C, id, false, false);
+				UI_id_icon_render(C, id, true, false);
+			}
+		}
+	}
+}
+
 /**
  * \see #wm_homefile_write_exec wraps #BLO_write_file in a similar way.
  */
@@ -938,6 +956,8 @@ int wm_file_write(bContext *C, const char *filepath, int fileflags, ReportList *
 	/* save before exit_editmode, otherwise derivedmeshes for shared data corrupt #27765) */
 	if ((U.flag & USER_SAVE_PREVIEWS) && BLI_thread_is_main()) {
 		ibuf_thumb = blend_file_thumb(CTX_data_scene(C), CTX_wm_screen(C), &thumb);
+
+		wm_ensure_previews(C, G.main);
 	}
 
 	BLI_callback_exec(G.main, NULL, BLI_CB_EVT_SAVE_PRE);