source/blender/compositor/nodes/COM_ZCombineNode.cpp

   1 /*
   2  * Copyright 2011, Blender Foundation.
   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  * Contributor:
  19  *              Jeroen Bakker
  20  *              Monique Dewanchand
  21  */
  22
  23 #include "COM_ZCombineNode.h"
  24
  25 #include "COM_ZCombineOperation.h"
  26
  27 #include "COM_ExecutionSystem.h"
  28 #include "COM_SetValueOperation.h"
  29 #include "COM_MathBaseOperation.h"
  30 #include "COM_AntiAliasOperation.h"
  31 #include "COM_MixBlendOperation.h"
  32
  33 #include "DNA_material_types.h" // the ramp types
  34
  35 void ZCombineNode::convertToOperations(ExecutionSystem *system, CompositorContext *context)
  36 {
  37         if (context->getRenderData()->scemode & R_FULL_SAMPLE) {
  38                 if (this->getOutputSocket(0)->isConnected()) {
  39                         ZCombineOperation *operation = NULL;
  40                         if (this->getbNode()->custom1) {
  41                                 operation = new ZCombineAlphaOperation();
  42                         }
  43                         else {
  44                                 operation = new ZCombineOperation();
  45                         }
  46
  47                         this->getInputSocket(0)->relinkConnections(operation->getInputSocket(0), 0, system);
  48                         this->getInputSocket(1)->relinkConnections(operation->getInputSocket(1), 1, system);
  49                         this->getInputSocket(2)->relinkConnections(operation->getInputSocket(2), 2, system);
  50                         this->getInputSocket(3)->relinkConnections(operation->getInputSocket(3), 3, system);
  51                         this->getOutputSocket(0)->relinkConnections(operation->getOutputSocket());
  52                         system->addOperation(operation);
  53                         if (this->getOutputSocket(1)->isConnected()) {
  54                                 MathMinimumOperation *zoperation = new MathMinimumOperation();
  55                                 addLink(system, operation->getInputSocket(1)->getConnection()->getFromSocket(), zoperation->getInputSocket(0));
  56                                 addLink(system, operation->getInputSocket(3)->getConnection()->getFromSocket(), zoperation->getInputSocket(1));
  57                                 this->getOutputSocket(1)->relinkConnections(zoperation->getOutputSocket());
  58                                 system->addOperation(zoperation);
  59                         }
  60                 }
  61                 else {
  62                         if (this->getOutputSocket(1)->isConnected()) {
  63                                 MathMinimumOperation *zoperation = new MathMinimumOperation();
  64                                 this->getInputSocket(1)->relinkConnections(zoperation->getInputSocket(0), 1, system);
  65                                 this->getInputSocket(3)->relinkConnections(zoperation->getInputSocket(1), 3, system);
  66                                 this->getOutputSocket(1)->relinkConnections(zoperation->getOutputSocket());
  67                                 system->addOperation(zoperation);
  68                         }
  69                 }
  70         } else {
  71                 // not full anti alias, use masking for Z combine. be aware it uses anti aliasing.
  72                 // step 1 create mask
  73                 MathGreaterThanOperation *maskoperation = new MathGreaterThanOperation();
  74                 this->getInputSocket(1)->relinkConnections(maskoperation->getInputSocket(0), 1, system);
  75                 this->getInputSocket(3)->relinkConnections(maskoperation->getInputSocket(1), 3, system);
  76
  77                 // step 2 anti alias mask bit of an expensive operation, but does the trick
  78                 AntiAliasOperation *antialiasoperation = new AntiAliasOperation();
  79                 addLink(system, maskoperation->getOutputSocket(), antialiasoperation->getInputSocket(0));
  80
  81                 // use mask to blend between the input colors.
  82                 ZCombineMaskOperation *zcombineoperation = this->getbNode()->custom1?new ZCombineMaskAlphaOperation():new ZCombineMaskOperation();
  83                 addLink(system, antialiasoperation->getOutputSocket(), zcombineoperation->getInputSocket(0));
  84                 this->getInputSocket(0)->relinkConnections(zcombineoperation->getInputSocket(1), 0, system);
  85                 this->getInputSocket(2)->relinkConnections(zcombineoperation->getInputSocket(2), 2, system);
  86                 this->getOutputSocket(0)->relinkConnections(zcombineoperation->getOutputSocket());
  87
  88                 system->addOperation(maskoperation);
  89                 system->addOperation(antialiasoperation);
  90                 system->addOperation(zcombineoperation);
  91
  92                 if (this->getOutputSocket(1)->isConnected()) {
  93                         MathMinimumOperation *zoperation = new MathMinimumOperation();
  94                         addLink(system, maskoperation->getInputSocket(0)->getConnection()->getFromSocket(), zoperation->getInputSocket(0));
  95                         addLink(system, maskoperation->getInputSocket(1)->getConnection()->getFromSocket(), zoperation->getInputSocket(1));
  96                         this->getOutputSocket(1)->relinkConnections(zoperation->getOutputSocket());
  97                         system->addOperation(zoperation);
  98                 }
  99         }
 100 }