node_composite_composite.c

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/*
 * ***** 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 "node_composite_util.h"



/* **************** COMPOSITE ******************** */
static bNodeSocketTemplate cmp_node_composite_in[]= {
    {   SOCK_RGBA, 1, "Image",      0.0f, 0.0f, 0.0f, 1.0f},
    {   SOCK_FLOAT, 1, "Alpha",     1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, PROP_FACTOR},
    {   SOCK_FLOAT, 1, "Z",         1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, PROP_FACTOR},
    {   -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(bNodeTreeType *ttype)
{
    static bNodeType ntype;

    node_type_base(ttype, &ntype, CMP_NODE_COMPOSITE, "Composite", NODE_CLASS_OUTPUT, NODE_PREVIEW);
    node_type_socket_templates(&ntype, cmp_node_composite_in, NULL);
    node_type_size(&ntype, 80, 60, 200);
    node_type_exec(&ntype, node_composit_exec_composite);
    /* Do not allow muting for this node. */
    node_type_mute(&ntype, NULL, NULL);

    nodeRegisterType(ttype, &ntype);
}