source/blender/nodes/texture/node_texture_tree.c

   1 /*
   2  * ***** BEGIN GPL LICENSE BLOCK *****
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; either version 2
   7  * of the License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software Foundation,
  16  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  17  *
  18  * The Original Code is Copyright (C) 2007 Blender Foundation.
  19  * All rights reserved.
  20  *
  21  * The Original Code is: all of this file.
  22  *
  23  * Contributor(s):
  24  *
  25  * ***** END GPL LICENSE BLOCK *****
  26  */
  27
  28 /** \file blender/nodes/texture/node_texture_tree.c
  29  *  \ingroup nodes
  30  */
  31
  32
  33 #include <string.h>
  34
  35 #include "DNA_texture_types.h"
  36 #include "DNA_node_types.h"
  37
  38 #include "BLI_listbase.h"
  39 #include "BLI_threads.h"
  40 #include "BLI_utildefines.h"
  41
  42 #include "BKE_global.h"
  43 #include "BKE_main.h"
  44 #include "BKE_node.h"
  45
  46 #include "node_exec.h"
  47 #include "node_util.h"
  48 #include "NOD_texture.h"
  49 #include "node_texture_util.h"
  50
  51 #include "RE_pipeline.h"
  52 #include "RE_shader_ext.h"
  53
  54
  55 static void foreach_nodetree(Main *main, void *calldata, bNodeTreeCallback func)
  56 {
  57         Tex *tx;
  58         for(tx= main->tex.first; tx; tx= tx->id.next) {
  59                 if(tx->nodetree) {
  60                         func(calldata, &tx->id, tx->nodetree);
  61                 }
  62         }
  63 }
  64
  65 static void local_sync(bNodeTree *localtree, bNodeTree *ntree)
  66 {
  67         bNode *lnode;
  68
  69         /* copy over contents of previews */
  70         for(lnode= localtree->nodes.first; lnode; lnode= lnode->next) {
  71                 if(ntreeNodeExists(ntree, lnode->new_node)) {
  72                         bNode *node= lnode->new_node;
  73
  74                         if(node->preview && node->preview->rect) {
  75                                 if(lnode->preview && lnode->preview->rect) {
  76                                         int xsize= node->preview->xsize;
  77                                         int ysize= node->preview->ysize;
  78                                         memcpy(node->preview->rect, lnode->preview->rect, 4*xsize + xsize*ysize*sizeof(char)*4);
  79                                 }
  80                         }
  81                 }
  82         }
  83 }
  84
  85 bNodeTreeType ntreeType_Texture = {
  86         /* type */                              NTREE_TEXTURE,
  87         /* id_name */                   "NTTexture Nodetree",
  88
  89         /* node_types */                { NULL, NULL },
  90
  91         /* free_cache */                        NULL,
  92         /* free_node_cache */           NULL,
  93         /* foreach_nodetree */  foreach_nodetree,
  94         /* localize */                  NULL,
  95         /* local_sync */                local_sync,
  96         /* local_merge */               NULL,
  97         /* update */                    NULL,
  98         /* update_node */               NULL
  99 };
 100
 101 int ntreeTexTagAnimated(bNodeTree *ntree)
 102 {
 103         bNode *node;
 104
 105         if(ntree==NULL) return 0;
 106
 107         for(node= ntree->nodes.first; node; node= node->next) {
 108                 if(node->type==TEX_NODE_CURVE_TIME) {
 109                         nodeUpdate(ntree, node);
 110                         return 1;
 111                 }
 112                 else if(node->type==NODE_GROUP) {
 113                         if( ntreeTexTagAnimated((bNodeTree *)node->id) ) {
 114                                 return 1;
 115                         }
 116                 }
 117         }
 118
 119         return 0;
 120 }
 121
 122 /* XXX Group nodes must set use_tree_data to false, since their trees can be shared by multiple nodes.
 123  * If use_tree_data is true, the ntree->execdata pointer is checked to avoid multiple execution of top-level trees.
 124  */
 125 bNodeTreeExec *ntreeTexBeginExecTree(bNodeTree *ntree, int use_tree_data)
 126 {
 127         bNodeTreeExec *exec;
 128         bNode *node;
 129
 130         if (use_tree_data) {
 131                 /* XXX hack: prevent exec data from being generated twice.
 132                  * this should be handled by the renderer!
 133                  */
 134                 if (ntree->execdata)
 135                         return ntree->execdata;
 136         }
 137
 138         /* common base initialization */
 139         exec = ntree_exec_begin(ntree);
 140
 141         /* allocate the thread stack listbase array */
 142         exec->threadstack= MEM_callocN(BLENDER_MAX_THREADS*sizeof(ListBase), "thread stack array");
 143
 144         for(node= exec->nodetree->nodes.first; node; node= node->next)
 145                 node->need_exec= 1;
 146
 147         if (use_tree_data) {
 148                 /* XXX this should not be necessary, but is still used for cmp/sha/tex nodes,
 149                  * which only store the ntree pointer. Should be fixed at some point!
 150                  */
 151                 ntree->execdata = exec;
 152         }
 153
 154         return exec;
 155 }
 156
 157 /* free texture delegates */
 158 static void tex_free_delegates(bNodeTreeExec *exec)
 159 {
 160         bNodeThreadStack *nts;
 161         bNodeStack *ns;
 162         int th, a;
 163
 164         for(th=0; th<BLENDER_MAX_THREADS; th++)
 165                 for(nts=exec->threadstack[th].first; nts; nts=nts->next)
 166                         for(ns= nts->stack, a=0; a<exec->stacksize; a++, ns++)
 167                                 if(ns->data && !ns->is_copy)
 168                                         MEM_freeN(ns->data);
 169 }
 170
 171 /* XXX Group nodes must set use_tree_data to false, since their trees can be shared by multiple nodes.
 172  * If use_tree_data is true, the ntree->execdata pointer is checked to avoid multiple execution of top-level trees.
 173  */
 174 void ntreeTexEndExecTree(bNodeTreeExec *exec, int use_tree_data)
 175 {
 176         if(exec) {
 177                 bNodeTree *ntree= exec->nodetree;
 178                 bNodeThreadStack *nts;
 179                 int a;
 180
 181                 if(exec->threadstack) {
 182                         tex_free_delegates(exec);
 183
 184                         for(a=0; a<BLENDER_MAX_THREADS; a++) {
 185                                 for(nts=exec->threadstack[a].first; nts; nts=nts->next)
 186                                         if (nts->stack) MEM_freeN(nts->stack);
 187                                 BLI_freelistN(&exec->threadstack[a]);
 188                         }
 189
 190                         MEM_freeN(exec->threadstack);
 191                         exec->threadstack= NULL;
 192                 }
 193
 194                 ntree_exec_end(exec);
 195
 196                 if (use_tree_data) {
 197                         /* XXX clear nodetree backpointer to exec data, same problem as noted in ntreeBeginExecTree */
 198                         ntree->execdata = NULL;
 199                 }
 200         }
 201 }
 202
 203 int ntreeTexExecTree(
 204         bNodeTree *nodes,
 205         TexResult *texres,
 206         float *co,
 207         float *dxt, float *dyt,
 208         int osatex,
 209         short thread,
 210         Tex *UNUSED(tex),
 211         short which_output,
 212         int cfra,
 213         int preview,
 214         ShadeInput *shi,
 215         MTex *mtex
 216 ){
 217         TexCallData data;
 218         float *nor= texres->nor;
 219         int retval = TEX_INT;
 220         bNodeThreadStack *nts = NULL;
 221         bNodeTreeExec *exec= nodes->execdata;
 222
 223         data.co = co;
 224         data.dxt = dxt;
 225         data.dyt = dyt;
 226         data.osatex = osatex;
 227         data.target = texres;
 228         data.do_preview = preview;
 229         data.thread = thread;
 230         data.which_output = which_output;
 231         data.cfra= cfra;
 232         data.mtex= mtex;
 233         data.shi= shi;
 234
 235         if (!exec)
 236                 exec = ntreeTexBeginExecTree(nodes, 1);
 237
 238         nts= ntreeGetThreadStack(exec, thread);
 239         ntreeExecThreadNodes(exec, nts, &data, thread);
 240         ntreeReleaseThreadStack(nts);
 241
 242         if(texres->nor) retval |= TEX_NOR;
 243         retval |= TEX_RGB;
 244         /* confusing stuff; the texture output node sets this to NULL to indicate no normal socket was set
 245            however, the texture code checks this for other reasons (namely, a normal is required for material) */
 246         texres->nor= nor;
 247
 248         return retval;
 249 }