render_update.c

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/*
 * $Id: render_update.c 36774 2011-05-19 11:34:11Z blendix $
 *
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version. 
 *
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * The Original Code is Copyright (C) 2009 Blender Foundation.
 * All rights reserved.
 *
 * Contributor(s): Blender Foundation
 *
 * ***** END GPL LICENSE BLOCK *****
 */

#include <stdlib.h>
#include <string.h>

#include "MEM_guardedalloc.h"

#include "DNA_lamp_types.h"
#include "DNA_material_types.h"
#include "DNA_node_types.h"
#include "DNA_object_types.h"
#include "DNA_scene_types.h"
#include "DNA_screen_types.h"
#include "DNA_space_types.h"
#include "DNA_view3d_types.h"
#include "DNA_world_types.h"

#include "BLI_utildefines.h"

#include "BKE_context.h"
#include "BKE_depsgraph.h"
#include "BKE_icons.h"
#include "BKE_image.h"
#include "BKE_main.h"
#include "BKE_material.h"
#include "BKE_node.h"
#include "BKE_scene.h"
#include "BKE_texture.h"
#include "BKE_world.h"

#include "GPU_material.h"

#include "ED_render.h"

#include "render_intern.h"      // own include

/***************************** Updates ***********************************
 * ED_render_id_flush_update gets called from DAG_id_tag_update, to do *
 * editor level updates when the ID changes. when these ID blocks are in *
 * the dependency graph, we can get rid of the manual dependency checks  */

static int mtex_use_tex(MTex **mtex, int tot, Tex *tex)
{
        int a;

        if(!mtex)
                return 0;

        for(a=0; a<tot; a++)
                if(mtex[a] && mtex[a]->tex == tex)
                        return 1;
        
        return 0;
}

static int nodes_use_tex(bNodeTree *ntree, Tex *tex)
{
        bNode *node;

        for(node=ntree->nodes.first; node; node= node->next) {
                if(node->id) {
                        if(node->id == (ID*)tex) {
                                return 1;
                        }
                        else if(node->type==NODE_GROUP) {
                                if(nodes_use_tex((bNodeTree *)node->id, tex))
                                        return 1;
                        }
                }
        }

        return 0;
}

static void material_changed(Main *UNUSED(bmain), Material *ma)
{
        /* icons */
        BKE_icon_changed(BKE_icon_getid(&ma->id));

        /* glsl */
        if(ma->gpumaterial.first)
                GPU_material_free(ma);
}

static void texture_changed(Main *bmain, Tex *tex)
{
        Material *ma;
        Lamp *la;
        World *wo;

        /* icons */
        BKE_icon_changed(BKE_icon_getid(&tex->id));

        /* find materials */
        for(ma=bmain->mat.first; ma; ma=ma->id.next) {
                if(mtex_use_tex(ma->mtex, MAX_MTEX, tex));
                else if(ma->use_nodes && ma->nodetree && nodes_use_tex(ma->nodetree, tex));
                else continue;

                BKE_icon_changed(BKE_icon_getid(&ma->id));

                if(ma->gpumaterial.first)
                        GPU_material_free(ma);
        }

        /* find lamps */
        for(la=bmain->lamp.first; la; la=la->id.next) {
                if(mtex_use_tex(la->mtex, MAX_MTEX, tex));
                else continue;

                BKE_icon_changed(BKE_icon_getid(&la->id));
        }

        /* find worlds */
        for(wo=bmain->world.first; wo; wo=wo->id.next) {
                if(mtex_use_tex(wo->mtex, MAX_MTEX, tex));
                else continue;

                BKE_icon_changed(BKE_icon_getid(&wo->id));
        }
}

static void lamp_changed(Main *bmain, Lamp *la)
{
        Object *ob;
        Material *ma;

        /* icons */
        BKE_icon_changed(BKE_icon_getid(&la->id));

        /* glsl */
        for(ob=bmain->object.first; ob; ob=ob->id.next)
                if(ob->data == la && ob->gpulamp.first)
                        GPU_lamp_free(ob);

        for(ma=bmain->mat.first; ma; ma=ma->id.next)
                if(ma->gpumaterial.first)
                        GPU_material_free(ma);
}

static void world_changed(Main *bmain, World *wo)
{
        Material *ma;

        /* icons */
        BKE_icon_changed(BKE_icon_getid(&wo->id));

        /* glsl */
        for(ma=bmain->mat.first; ma; ma=ma->id.next)
                if(ma->gpumaterial.first)
                        GPU_material_free(ma);
}

static void image_changed(Main *bmain, Image *ima)
{
        Tex *tex;

        /* icons */
        BKE_icon_changed(BKE_icon_getid(&ima->id));

        /* textures */
        for(tex=bmain->tex.first; tex; tex=tex->id.next)
                if(tex->ima == ima)
                        texture_changed(bmain, tex);
}

static void scene_changed(Main *bmain, Scene *UNUSED(scene))
{
        Object *ob;
        Material *ma;

        /* glsl */
        for(ob=bmain->object.first; ob; ob=ob->id.next)
                if(ob->gpulamp.first)
                        GPU_lamp_free(ob);

        for(ma=bmain->mat.first; ma; ma=ma->id.next)
                if(ma->gpumaterial.first)
                        GPU_material_free(ma);
}

void ED_render_id_flush_update(Main *bmain, ID *id)
{
        if(!id)
                return;

        switch(GS(id->name)) {
                case ID_MA:
                        material_changed(bmain, (Material*)id);
                        break;
                case ID_TE:
                        texture_changed(bmain, (Tex*)id);
                        break;
                case ID_WO:
                        world_changed(bmain, (World*)id);
                        break;
                case ID_LA:
                        lamp_changed(bmain, (Lamp*)id);
                        break;
                case ID_IM:
                        image_changed(bmain, (Image*)id);
                        break;
                case ID_SCE:
                        scene_changed(bmain, (Scene*)id);
                        break;
                default:
                        break;
        }
}