source/blender/editors/object/object_bake.c

   1 /**
   2  * $Id$
   3  *
   4  * ***** BEGIN GPL LICENSE BLOCK *****
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version 2
   9  * of the License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software Foundation,
  18  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  19  *
  20  * The Original Code is Copyright (C) 2004 by Blender Foundation
  21  * All rights reserved.
  22  *
  23  * The Original Code is: all of this file.
  24  *
  25  * Contributor(s): none yet.
  26  *
  27  * ***** END GPL LICENSE BLOCK *****
  28  */
  29
  30 /*
  31         meshtools.c: no editmode (violated already :), tools operating on meshes
  32 */
  33
  34 #include <string.h>
  35
  36 #include "MEM_guardedalloc.h"
  37
  38 #include "DNA_image_types.h"
  39 #include "DNA_scene_types.h"
  40 #include "DNA_screen_types.h"
  41 #include "DNA_space_types.h"
  42 #include "DNA_world_types.h"
  43
  44 #include "BLI_blenlib.h"
  45 #include "BLI_threads.h"
  46
  47 #include "BKE_blender.h"
  48 #include "BKE_context.h"
  49 #include "BKE_global.h"
  50 #include "BKE_image.h"
  51 #include "BKE_main.h"
  52 #include "BKE_object.h"
  53 #include "BKE_utildefines.h"
  54 #include "BKE_report.h"
  55
  56 #include "RE_pipeline.h"
  57 #include "RE_shader_ext.h"
  58
  59 #include "PIL_time.h"
  60
  61 #include "IMB_imbuf_types.h"
  62 #include "IMB_imbuf.h"
  63
  64 #include "GPU_draw.h" /* GPU_free_image */
  65
  66 #include "WM_api.h"
  67 #include "WM_types.h"
  68
  69
  70 /* ****************** render BAKING ********************** */
  71
  72 /* threaded break test */
  73 static int thread_break(void *unused)
  74 {
  75         return G.afbreek;
  76 }
  77
  78 static ScrArea *biggest_image_area(bScreen *screen)
  79 {
  80         ScrArea *sa, *big= NULL;
  81         int size, maxsize= 0;
  82
  83         for(sa= screen->areabase.first; sa; sa= sa->next) {
  84                 if(sa->spacetype==SPACE_IMAGE) {
  85                         size= sa->winx*sa->winy;
  86                         if(sa->winx > 10 && sa->winy > 10 && size > maxsize) {
  87                                 maxsize= size;
  88                                 big= sa;
  89                         }
  90                 }
  91         }
  92         return big;
  93 }
  94
  95
  96 typedef struct BakeRender {
  97         Render *re;
  98         Scene *scene;
  99         struct Object *actob;
 100         int tot, ready;
 101
 102         ReportList *reports;
 103
 104         short *stop;
 105         short *do_update;
 106
 107         ListBase threads;
 108
 109         /* backup */
 110         short prev_wo_amb_occ;
 111         short prev_r_raytrace;
 112
 113         /* for redrawing */
 114         ScrArea *sa;
 115 } BakeRender;
 116
 117 /* use by exec and invoke */
 118 int test_bake_internal(bContext *C, ReportList *reports)
 119 {
 120         Scene *scene= CTX_data_scene(C);
 121
 122         if(scene->r.renderer!=R_INTERN) {
 123                 BKE_report(reports, RPT_ERROR, "Bake only supported for Internal Renderer");
 124         } else if((scene->r.bake_flag & R_BAKE_TO_ACTIVE) && CTX_data_active_object(C)==NULL) {
 125                 BKE_report(reports, RPT_ERROR, "No active object");
 126         }
 127         else if(scene->r.bake_mode==RE_BAKE_AO && scene->world==NULL) {
 128                 BKE_report(reports, RPT_ERROR, "No world set up");
 129         }
 130         else {
 131                 return 1;
 132         }
 133
 134         return 0;
 135 }
 136
 137 static void init_bake_internal(BakeRender *bkr, bContext *C)
 138 {
 139         Scene *scene= CTX_data_scene(C);
 140
 141         bkr->sa= biggest_image_area(CTX_wm_screen(C)); /* can be NULL */
 142         bkr->scene= scene;
 143         bkr->actob= (scene->r.bake_flag & R_BAKE_TO_ACTIVE) ? OBACT : NULL;
 144         bkr->re= RE_NewRender("_Bake View_", RE_SLOT_DEFAULT);
 145
 146         if(scene->r.bake_mode==RE_BAKE_AO) {
 147                 /* If raytracing or AO is disabled, switch it on temporarily for baking. */
 148                 bkr->prev_wo_amb_occ = (scene->world->mode & WO_AMB_OCC) != 0;
 149                 scene->world->mode |= WO_AMB_OCC;
 150         }
 151         if(scene->r.bake_mode==RE_BAKE_AO || bkr->actob) {
 152                 bkr->prev_r_raytrace = (scene->r.mode & R_RAYTRACE) != 0;
 153                 scene->r.mode |= R_RAYTRACE;
 154         }
 155 }
 156
 157 static void finish_bake_internal(BakeRender *bkr)
 158 {
 159         RE_Database_Free(bkr->re);
 160
 161         /* restore raytrace and AO */
 162         if(bkr->scene->r.bake_mode==RE_BAKE_AO)
 163                 if(bkr->prev_wo_amb_occ == 0)
 164                         bkr->scene->world->mode &= ~WO_AMB_OCC;
 165
 166         if(bkr->scene->r.bake_mode==RE_BAKE_AO || bkr->actob)
 167                 if(bkr->prev_r_raytrace == 0)
 168                         bkr->scene->r.mode &= ~R_RAYTRACE;
 169
 170         if(bkr->tot) {
 171                 Image *ima;
 172                 /* force OpenGL reload and mipmap recalc */
 173                 for(ima= G.main->image.first; ima; ima= ima->id.next) {
 174                         if(ima->ok==IMA_OK_LOADED) {
 175                                 ImBuf *ibuf= BKE_image_get_ibuf(ima, NULL);
 176                                 if(ibuf && (ibuf->userflags & IB_BITMAPDIRTY)) {
 177                                         GPU_free_image(ima);
 178                                         imb_freemipmapImBuf(ibuf);
 179                                 }
 180                         }
 181                 }
 182         }
 183 }
 184
 185 static void *do_bake_render(void *bake_v)
 186 {
 187         BakeRender *bkr= bake_v;
 188
 189         bkr->tot= RE_bake_shade_all_selected(bkr->re, bkr->scene->r.bake_mode, bkr->actob, NULL);
 190         bkr->ready= 1;
 191
 192         return NULL;
 193 }
 194
 195 static void bake_startjob(void *bkv, short *stop, short *do_update)
 196 {
 197         BakeRender *bkr= bkv;
 198         Scene *scene= bkr->scene;
 199
 200         bkr->stop= stop;
 201         bkr->do_update= do_update;
 202
 203         RE_test_break_cb(bkr->re, NULL, thread_break);
 204         G.afbreek= 0;   /* blender_test_break uses this global */
 205
 206         RE_Database_Baking(bkr->re, scene, scene->lay, scene->r.bake_mode, bkr->actob);
 207
 208         /* baking itself is threaded, cannot use test_break in threads. we also update optional imagewindow */
 209         bkr->tot= RE_bake_shade_all_selected(bkr->re, scene->r.bake_mode, bkr->actob, bkr->do_update);
 210 }
 211
 212 static void bake_update(void *bkv)
 213 {
 214         BakeRender *bkr= bkv;
 215
 216         if(bkr->sa && bkr->sa->spacetype==SPACE_IMAGE) { /* incase the user changed while baking */
 217                 SpaceImage *sima= bkr->sa->spacedata.first;
 218                 if(sima)
 219                         sima->image= RE_bake_shade_get_image();
 220         }
 221 }
 222
 223 static void bake_freejob(void *bkv)
 224 {
 225         BakeRender *bkr= bkv;
 226         BLI_end_threads(&bkr->threads);
 227         finish_bake_internal(bkr);
 228
 229         if(bkr->tot==0) BKE_report(bkr->reports, RPT_ERROR, "No Images found to bake to");
 230         MEM_freeN(bkr);
 231 }
 232
 233 /* catch esc */
 234 static int objects_bake_render_modal(bContext *C, wmOperator *op, wmEvent *event)
 235 {
 236         /* no running blender, remove handler and pass through */
 237         if(0==WM_jobs_test(CTX_wm_manager(C), CTX_data_scene(C)))
 238                 return OPERATOR_FINISHED|OPERATOR_PASS_THROUGH;
 239
 240         /* running render */
 241         switch (event->type) {
 242                 case ESCKEY:
 243                         return OPERATOR_RUNNING_MODAL;
 244                         break;
 245         }
 246         return OPERATOR_PASS_THROUGH;
 247 }
 248
 249 static int objects_bake_render_invoke(bContext *C, wmOperator *op, wmEvent *_event)
 250 {
 251         Scene *scene= CTX_data_scene(C);
 252
 253         if(test_bake_internal(C, op->reports)==0) {
 254                 return OPERATOR_CANCELLED;
 255         }
 256         else {
 257                 BakeRender *bkr= MEM_callocN(sizeof(BakeRender), "render bake");
 258                 wmJob *steve;
 259
 260                 init_bake_internal(bkr, C);
 261                 bkr->reports= op->reports;
 262
 263                 /* setup job */
 264                 steve= WM_jobs_get(CTX_wm_manager(C), CTX_wm_window(C), scene, WM_JOB_EXCL_RENDER|WM_JOB_PRIORITY);
 265                 WM_jobs_customdata(steve, bkr, bake_freejob);
 266                 WM_jobs_timer(steve, 0.2, NC_IMAGE, 0); /* TODO - only draw bake image, can we enforce this */
 267                 WM_jobs_callbacks(steve, bake_startjob, NULL, bake_update);
 268
 269                 G.afbreek= 0;
 270
 271                 WM_jobs_start(CTX_wm_manager(C), steve);
 272
 273                 WM_cursor_wait(0);
 274                 WM_event_add_notifier(C, NC_SCENE|ND_RENDER_RESULT, scene);
 275
 276                 /* add modal handler for ESC */
 277                 WM_event_add_modal_handler(C, op);
 278         }
 279
 280         return OPERATOR_RUNNING_MODAL;
 281 }
 282
 283
 284 static int bake_image_exec(bContext *C, wmOperator *op)
 285 {
 286         Scene *scene= CTX_data_scene(C);
 287
 288
 289         if(test_bake_internal(C, op->reports)==0) {
 290                 return OPERATOR_CANCELLED;
 291         }
 292         else {
 293                 ListBase threads;
 294                 BakeRender bkr;
 295
 296                 memset(&bkr, 0, sizeof(bkr));
 297
 298                 init_bake_internal(&bkr, C);
 299                 bkr.reports= op->reports;
 300
 301                 RE_test_break_cb(bkr.re, NULL, thread_break);
 302                 G.afbreek= 0;   /* blender_test_break uses this global */
 303
 304                 RE_Database_Baking(bkr.re, scene, scene->lay, scene->r.bake_mode, (scene->r.bake_flag & R_BAKE_TO_ACTIVE)? OBACT: NULL);
 305
 306                 /* baking itself is threaded, cannot use test_break in threads  */
 307                 BLI_init_threads(&threads, do_bake_render, 1);
 308                 bkr.ready= 0;
 309                 BLI_insert_thread(&threads, &bkr);
 310
 311                 while(bkr.ready==0) {
 312                         PIL_sleep_ms(50);
 313                         if(bkr.ready)
 314                                 break;
 315
 316                         /* used to redraw in 2.4x but this is just for exec in 2.5 */
 317                         if (!G.background)
 318                                 blender_test_break();
 319                 }
 320                 BLI_end_threads(&threads);
 321
 322                 if(bkr.tot==0) BKE_report(op->reports, RPT_ERROR, "No Images found to bake to");
 323
 324                 finish_bake_internal(&bkr);
 325         }
 326
 327         WM_event_add_notifier(C, NC_SCENE|ND_RENDER_RESULT, scene);
 328         return OPERATOR_FINISHED;
 329 }
 330
 331 void OBJECT_OT_bake_image(wmOperatorType *ot)
 332 {
 333         /* identifiers */
 334         ot->name= "Bake";
 335         ot->description= "Bake image textures of selected objects";
 336         ot->idname= "OBJECT_OT_bake_image";
 337
 338         /* api callbacks */
 339         ot->exec= bake_image_exec;
 340         ot->invoke= objects_bake_render_invoke;
 341         ot->modal= objects_bake_render_modal;
 342 }