Source/System/Window/FrameBufferObjects/OSGFBOViewport.cpp

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  37 \*---------------------------------------------------------------------------*/
  38
  39 //---------------------------------------------------------------------------
  40 //  Includes
  41 //---------------------------------------------------------------------------
  42
  43 #include <cstdlib>
  44 #include <cstdio>
  45
  46 #include "OSGConfig.h"
  47 #include "OSGGL.h"
  48
  49 #include "OSGFBOViewport.h"
  50 #include "OSGFrameBufferObject.h"
  51 #include "OSGDrawEnv.h"
  52
  53 #include "OSGCamera.h"
  54 #include "OSGBackground.h"
  55 #include "OSGWindow.h"
  56 #include "OSGFrameBufferAttachment.h"
  57
  58 OSG_BEGIN_NAMESPACE
  59
  60 // Documentation for this class is emited in the
  61 // OSGFBOViewportBase.cpp file.
  62 // To modify it, please change the .fcd file (OSGFBOViewport.fcd) and
  63 // regenerate the base file.
  64
  65 Int32 FBOViewport::computePixelLeft(void) const
  66 {
  67     if(getLeft() > 1)
  68         return Int32(getLeft());
  69
  70     if(getFrameBufferObject() == NULL)
  71         return Int32(getLeft());
  72
  73     return Int32(getFrameBufferObject()->getWidth() * getLeft());
  74 }
  75
  76 Int32 FBOViewport::computePixelRight(void) const
  77 {
  78     // >1: pixel
  79     if(getRight() > 1)
  80         return Int32(getRight());
  81
  82     if(getFrameBufferObject() == NULL)
  83         return Int32(getRight());
  84
  85     // <=1: partial screen, use 1 less to not overlap other windows
  86     return Int32(getFrameBufferObject()->getWidth() * getRight() - 1);
  87 }
  88
  89 Int32 FBOViewport::computePixelBottom(void) const
  90 {
  91     if(getBottom() > 1)
  92         return Int32(getBottom());
  93
  94     if(getFrameBufferObject() == NULL)
  95         return Int32(getBottom());
  96
  97     return Int32(getFrameBufferObject()->getHeight() * getBottom());
  98 }
  99
 100 Int32 FBOViewport::computePixelTop(void) const
 101 {
 102     // >1: pixel
 103     if(getTop() > 1)
 104         return Int32(getTop());
 105
 106     if(getFrameBufferObject() == NULL)
 107         return Int32(getTop());
 108
 109     // <=1: partial screen, use 1 less to not overlap other windows
 110     return Int32(getFrameBufferObject()->getHeight() * getTop() - 1);
 111 }
 112
 113 bool FBOViewport::computeIsFullWindow(void) const
 114 {
 115     if(getFrameBufferObject() == NULL)
 116         return true;
 117
 118     return
 119         computePixelBottom() == 0 &&
 120         computePixelLeft()   == 0 &&
 121         computePixelTop()    == getFrameBufferObject()->getHeight() - 1 &&
 122         computePixelRight()  == getFrameBufferObject()->getWidth () - 1;
 123 }
 124
 125 /*----------------------- constructors & destructors ----------------------*/
 126
 127 FBOViewport::FBOViewport(void) :
 128     Inherited()
 129 {
 130 }
 131
 132 FBOViewport::FBOViewport(const FBOViewport &source) :
 133     Inherited(source)
 134 {
 135 }
 136
 137 FBOViewport::~FBOViewport(void)
 138 {
 139 }
 140
 141 /*----------------------------- class specific ----------------------------*/
 142
 143 void FBOViewport::initMethod(InitPhase ePhase)
 144 {
 145     Inherited::initMethod(ePhase);
 146 }
 147
 148 void FBOViewport::changed(ConstFieldMaskArg whichField,
 149                           UInt32            origin,
 150                           BitVector         details)
 151 {
 152     Inherited::changed(whichField, origin, details);
 153 }
 154
 155 void FBOViewport::dump(      UInt32    ,
 156                        const BitVector ) const
 157 {
 158     SLOG << "Dump DBOViewport NI" << std::endl;
 159 }
 160
 161
 162 FrameBufferObject *FBOViewport::getTarget(void)
 163 {
 164     return this->getFrameBufferObject();
 165 }
 166
 167 #ifdef OSG_OLD_RENDER_ACTION
 168 void FBOViewport::render(DrawActionBase *action)
 169 {
 170     if(getFrameBufferObject() != NULL)
 171     {
 172         DrawEnv oEnv;
 173         oEnv.setWindow(action->getWindow());
 174
 175         getFrameBufferObject()->activate(&oEnv);
 176
 177         Inherited::render(action);
 178
 179         getFrameBufferObject()->deactivate(&oEnv);
 180     }
 181     else
 182     {
 183         Inherited::render(action);
 184     }
 185 }
 186 #endif
 187
 188 OSG_END_NAMESPACE
 189