CMP_composite.c

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/*
 * $Id: CMP_composite.c 35237 2011-02-27 20:13:22Z jesterking $
 *
 * ***** 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. 
 *
 * This program is distributed in the hope that it will be useful,
 * 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) 2006 Blender Foundation.
 * All rights reserved.
 *
 * The Original Code is: all of this file.
 *
 * Contributor(s): none yet.
 *
 * ***** END GPL LICENSE BLOCK *****
 */

#include "../CMP_util.h"



/* **************** COMPOSITE ******************** */
static bNodeSocketType cmp_node_composite_in[]= {
        {       SOCK_RGBA, 1, "Image",          0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f},
        {       SOCK_VALUE, 1, "Alpha",         1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f},
        {       SOCK_VALUE, 1, "Z",                     1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f},
        {       -1, 0, ""       }
};

/* applies to render pipeline */
static void node_composit_exec_composite(void *data, bNode *node, bNodeStack **in, bNodeStack **UNUSED(out))
{
        /* image assigned to output */
        /* stack order input sockets: col, alpha, z */
        
        if(node->flag & NODE_DO_OUTPUT) {       /* only one works on out */
                Scene *scene= (Scene *)node->id;
                RenderData *rd= data;
                
                if(scene && (rd->scemode & R_DOCOMP)) {
                        Render *re= RE_GetRender(scene->id.name);
                        RenderResult *rr= RE_AcquireResultWrite(re); 
                        if(rr) {
                                CompBuf *outbuf, *zbuf=NULL;
                                
                                if(rr->rectf) 
                                        MEM_freeN(rr->rectf);
                                outbuf= alloc_compbuf(rr->rectx, rr->recty, CB_RGBA, 1);
                                
                                if(in[1]->data==NULL)
                                        composit1_pixel_processor(node, outbuf, in[0]->data, in[0]->vec, do_copy_rgba, CB_RGBA);
                                else
                                        composit2_pixel_processor(node, outbuf, in[0]->data, in[0]->vec, in[1]->data, in[1]->vec, do_copy_a_rgba, CB_RGBA, CB_VAL);
                                
                                if(in[2]->data) {
                                        if(rr->rectz) 
                                                MEM_freeN(rr->rectz);
                                        zbuf= alloc_compbuf(rr->rectx, rr->recty, CB_VAL, 1);
                                        composit1_pixel_processor(node, zbuf, in[2]->data, in[2]->vec, do_copy_value, CB_VAL);
                                        rr->rectz= zbuf->rect;
                                        zbuf->malloc= 0;
                                        free_compbuf(zbuf);
                                }
                                generate_preview(data, node, outbuf);
                                
                                /* we give outbuf to rr... */
                                rr->rectf= outbuf->rect;
                                outbuf->malloc= 0;
                                free_compbuf(outbuf);

                                /* signal for imageviewer to refresh (it converts to byte rects...) */
                                BKE_image_signal(BKE_image_verify_viewer(IMA_TYPE_R_RESULT, "Render Result"), NULL, IMA_SIGNAL_FREE);

                                RE_ReleaseResult(re);
                                return;
                        }
                        else
                                RE_ReleaseResult(re);
                }
        }
        if(in[0]->data)
                generate_preview(data, node, in[0]->data);
}

void register_node_type_cmp_composite(ListBase *lb)
{
        static bNodeType ntype;

        node_type_base(&ntype, CMP_NODE_COMPOSITE, "Composite", NODE_CLASS_OUTPUT, NODE_PREVIEW,
                cmp_node_composite_in, NULL);
        node_type_size(&ntype, 80, 60, 200);
        node_type_exec(&ntype, node_composit_exec_composite);

        nodeRegisterType(lb, &ntype);
}