CMP_texture.c

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/*
 * $Id: CMP_texture.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"

/* **************** TEXTURE ******************** */
static bNodeSocketType cmp_node_texture_in[]= {
        {       SOCK_VECTOR, 1, "Offset",               0.0f, 0.0f, 0.0f, 0.0f, -2.0f, 2.0f},
        {       SOCK_VECTOR, 1, "Scale",                1.0f, 1.0f, 1.0f, 1.0f, -10.0f, 10.0f},
        {       -1, 0, ""       }
};
static bNodeSocketType cmp_node_texture_out[]= {
        {       SOCK_VALUE, 0, "Value",         1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f},
        {       SOCK_RGBA , 0, "Color",         1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f},
        {       -1, 0, ""       }
};

/* called without rect allocated */
static void texture_procedural(CompBuf *cbuf, float *out, float xco, float yco)
{
        bNode *node= cbuf->node;
        TexResult texres= {0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0, NULL};
        float vec[3], *size, nor[3]={0.0f, 0.0f, 0.0f}, col[4];
        int retval, type= cbuf->procedural_type;
        
        size= cbuf->procedural_size;
        
        vec[0]= size[0]*(xco + cbuf->procedural_offset[0]);
        vec[1]= size[1]*(yco + cbuf->procedural_offset[1]);
        vec[2]= size[2]*cbuf->procedural_offset[2];
        
        retval= multitex_ext((Tex *)node->id, vec, NULL, NULL, 0, &texres);
        
        if(type==CB_VAL) {
                if(texres.talpha)
                        col[0]= texres.ta;
                else
                        col[0]= texres.tin;
        }
        else if(type==CB_RGBA) {
                if(texres.talpha)
                        col[3]= texres.ta;
                else
                        col[3]= texres.tin;
                
                if((retval & TEX_RGB)) {
                        col[0]= texres.tr;
                        col[1]= texres.tg;
                        col[2]= texres.tb;
                }
                else col[0]= col[1]= col[2]= col[3];
        }
        else { 
                VECCOPY(col, nor);
        }
        
        typecheck_compbuf_color(out, col, cbuf->type, cbuf->procedural_type);
}

/* texture node outputs get a small rect, to make sure all other nodes accept it */
/* only the pixel-processor nodes do something with it though */
static void node_composit_exec_texture(void *data, bNode *node, bNodeStack **in, bNodeStack **out)
{
        /* outputs: value, color, normal */
        
        if(node->id) {
                RenderData *rd= data;
                short sizex, sizey;
                
                /* first make the preview image */
                CompBuf *prevbuf= alloc_compbuf(140, 140, CB_RGBA, 1); /* alloc */

                prevbuf->rect_procedural= texture_procedural;
                prevbuf->node= node;
                VECCOPY(prevbuf->procedural_offset, in[0]->vec);
                VECCOPY(prevbuf->procedural_size, in[1]->vec);
                prevbuf->procedural_type= CB_RGBA;
                composit1_pixel_processor(node, prevbuf, prevbuf, out[0]->vec, do_copy_rgba, CB_RGBA);
                
                generate_preview(data, node, prevbuf);
                free_compbuf(prevbuf);
                
                /* texture procedural buffer type doesnt work well, we now render a buffer in scene size */
                sizex = (rd->size*rd->xsch)/100;
                sizey = (rd->size*rd->ysch)/100;
                
                if(out[0]->hasoutput) {
                        CompBuf *stackbuf= alloc_compbuf(sizex, sizey, CB_VAL, 1); /* alloc */
                        
                        stackbuf->rect_procedural= texture_procedural;
                        stackbuf->node= node;
                        VECCOPY(stackbuf->procedural_offset, in[0]->vec);
                        VECCOPY(stackbuf->procedural_size, in[1]->vec);
                        stackbuf->procedural_type= CB_VAL;
                        composit1_pixel_processor(node, stackbuf, stackbuf, out[0]->vec, do_copy_value, CB_VAL);
                        stackbuf->rect_procedural= NULL;
                        
                        out[0]->data= stackbuf; 
                }
                if(out[1]->hasoutput) {
                        CompBuf *stackbuf= alloc_compbuf(sizex, sizey, CB_RGBA, 1); /* alloc */
                        
                        stackbuf->rect_procedural= texture_procedural;
                        stackbuf->node= node;
                        VECCOPY(stackbuf->procedural_offset, in[0]->vec);
                        VECCOPY(stackbuf->procedural_size, in[1]->vec);
                        stackbuf->procedural_type= CB_RGBA;
                        composit1_pixel_processor(node, stackbuf, stackbuf, out[0]->vec, do_copy_rgba, CB_RGBA);
                        stackbuf->rect_procedural= NULL;
                        
                        out[1]->data= stackbuf;
                }
        }
}

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

        node_type_base(&ntype, CMP_NODE_TEXTURE, "Texture", NODE_CLASS_INPUT, NODE_OPTIONS|NODE_PREVIEW,
                cmp_node_texture_in, cmp_node_texture_out);
        node_type_size(&ntype, 120, 80, 240);
        node_type_exec(&ntype, node_composit_exec_texture);

        nodeRegisterType(lb, &ntype);
}