Source/System/State/Shader/SHL/OSGSimpleSHLVariableChunk.cpp

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  37 \*---------------------------------------------------------------------------*/
  38
  39 //---------------------------------------------------------------------------
  40 //  Includes
  41 //---------------------------------------------------------------------------
  42
  43 #include <cstdlib>
  44 #include <cstdio>
  45
  46 #include "OSGConfig.h"
  47
  48 #include "OSGSimpleSHLVariableChunk.h"
  49
  50 #include "OSGShaderVariables.h"
  51
  52 OSG_BEGIN_NAMESPACE
  53
  54 // Documentation for this class is emitted in the
  55 // OSGSimpleSHLVariableChunkBase.cpp file.
  56 // To modify it, please change the .fcd file (OSGSimpleSHLVariableChunk.fcd) and
  57 // regenerate the base file.
  58
  59 /***************************************************************************\
  60  *                           Class variables                               *
  61 \***************************************************************************/
  62
  63 #if 0
  64 volatile UInt16 SimpleSHLVariableChunk::_uiChunkCounter = 1;
  65 #endif
  66
  67 /***************************************************************************\
  68  *                           Class methods                                 *
  69 \***************************************************************************/
  70
  71 void SimpleSHLVariableChunk::initMethod(InitPhase ePhase)
  72 {
  73     Inherited::initMethod(ePhase);
  74
  75     if(ePhase == TypeObject::SystemPost)
  76     {
  77     }
  78 }
  79
  80
  81 /***************************************************************************\
  82  *                           Instance methods                              *
  83 \***************************************************************************/
  84
  85 /*-------------------------------------------------------------------------*\
  86  -  private                                                                 -
  87 \*-------------------------------------------------------------------------*/
  88
  89 /*----------------------- constructors & destructors ----------------------*/
  90
  91 SimpleSHLVariableChunk::SimpleSHLVariableChunk(void) :
  92      Inherited( ),
  93     _uiChunkId(0)
  94 {
  95 }
  96
  97 SimpleSHLVariableChunk::SimpleSHLVariableChunk(
  98     const SimpleSHLVariableChunk &source) :
  99
 100      Inherited(source),
 101     _uiChunkId(0     )
 102 {
 103 }
 104
 105 SimpleSHLVariableChunk::~SimpleSHLVariableChunk(void)
 106 {
 107 }
 108
 109 void SimpleSHLVariableChunk::onCreate(const SimpleSHLVariableChunk *source)
 110 {
 111     Inherited::onCreate(source);
 112
 113     if(GlobalSystemState == Startup)
 114         return;
 115
 116     _uiChunkId = ShaderExecutableVarChunk::_uiChunkCounter++;
 117 }
 118
 119 void SimpleSHLVariableChunk::onCreateAspect(
 120     const SimpleSHLVariableChunk *createAspect,
 121     const SimpleSHLVariableChunk *source      )
 122 {
 123     Inherited::onCreateAspect(createAspect, source);
 124
 125     _uiChunkId = createAspect->_uiChunkId;
 126 }
 127
 128 const StateChunkClass *SimpleSHLVariableChunk::getClass(void) const
 129 {
 130     return ShaderExecutableVarChunk::getStaticClass();
 131 }
 132
 133 UInt16 SimpleSHLVariableChunk::getChunkId(void)
 134 {
 135     return _uiChunkId;
 136 }
 137
 138 /*----------------------------- class specific ----------------------------*/
 139
 140 void SimpleSHLVariableChunk::changed(ConstFieldMaskArg whichField,
 141                                      UInt32            origin,
 142                                      BitVector         details)
 143 {
 144     if(0x0000 != (whichField & VariablesFieldMask))
 145     {
 146         ShaderProgramVariables *pVars = _sfVariables.getValue();
 147
 148         if(pVars != NULL)
 149         {
 150             if(details == 0x0001)
 151             {
 152                 // be save reset all locations
 153
 154                 if(pVars->getMFVariables()->size() == 0)
 155                 {
 156                     editMFVariableLocations()->clear();
 157                 }
 158                 else
 159                 {
 160                     editMFVariableLocations()->resize(
 161                         pVars->getMFVariables()->size(),
 162                         -1);
 163
 164                     std::fill(editMFVariableLocations()->begin(),
 165                               editMFVariableLocations()->end  (),
 166                               -1);
 167                 }
 168             }
 169         }
 170     }
 171
 172     Inherited::changed(whichField, origin, details);
 173 }
 174
 175 bool SimpleSHLVariableChunk::subUniformVariable(const Char8 *name)
 176 {
 177     if(_sfVariables.getValue() != NULL)
 178     {
 179         return _sfVariables.getValue()->subUniformVariable(name, NULL, NULL);
 180     }
 181     else
 182     {
 183         return false;
 184     }
 185 }
 186
 187 void SimpleSHLVariableChunk::clearUniformVariables(void)
 188 {
 189     if(_sfVariables.getValue() == NULL)
 190     {
 191         _sfVariables.getValue()->clearUniformVariables();
 192     }
 193 }
 194
 195 void SimpleSHLVariableChunk::dump(      UInt32    ,
 196                                   const BitVector ) const
 197 {
 198     SLOG << "Dump SimpleSHLVariableChunk NI" << std::endl;
 199 }
 200
 201 void SimpleSHLVariableChunk::activate(DrawEnv *pEnv, UInt32)
 202 {
 203     updateVariables(pEnv);
 204 }
 205
 206 void SimpleSHLVariableChunk::changeFrom(DrawEnv    *pEnv,
 207                                         StateChunk *pOther,
 208                                         UInt32            )
 209 {
 210     SimpleSHLVariableChunk *pOld =
 211         dynamic_cast<SimpleSHLVariableChunk *>(pOther);
 212
 213     if(pOld == NULL)
 214     {
 215         FWARNING(( "SimpleSHLChunk::changeFrom: caught non-SHLChunk!\n"));
 216         return;
 217     }
 218
 219     // SimpleSHLChunk didn't change so do nothing.
 220     if(pOld == this)
 221         return;
 222
 223     updateVariables(pEnv);
 224 }
 225
 226 void SimpleSHLVariableChunk::deactivate(DrawEnv *, UInt32)
 227 {
 228 }
 229
 230 void SimpleSHLVariableChunk::updateVariables(DrawEnv *pEnv)
 231 {
 232     UInt32 uiProgram = pEnv->getActiveShader();
 233
 234     if(uiProgram == 0)
 235         return;
 236
 237     const ShaderProgramVariables::MFVariablesType       *pMFVars   = NULL;
 238
 239     if(_sfVariables.getValue() != NULL)
 240     {
 241         pMFVars   = _sfVariables.getValue()->getMFVariables();
 242     }
 243
 244     if(pMFVars == NULL || pMFVars->size() == 0)
 245     {
 246         return;
 247     }
 248
 249     MFInt32 &vVarLocations = *this->editMFVariableLocations();
 250
 251     OSG_ASSERT(pMFVars->size() == vVarLocations.size());
 252
 253     MFInt32::iterator mLocIt = vVarLocations.begin();
 254
 255     ShaderProgramVariables::MFVariablesType::const_iterator mVarIt  =
 256         pMFVars->begin();
 257     ShaderProgramVariables::MFVariablesType::const_iterator mVarEnd =
 258         pMFVars->end  ();
 259
 260     bool warnUnknown = true;
 261
 262     for(; mVarIt != mVarEnd; ++mVarIt, ++mLocIt)
 263     {
 264         ShaderVariable *pVar = *mVarIt;
 265
 266         if(pVar == NULL)
 267             continue;
 268
 269         osgUniformShaderVariableSwitch(pEnv,    pVar,
 270                                        *mLocIt, uiProgram, warnUnknown);
 271     }
 272 }
 273
 274 OSG_END_NAMESPACE