Source/System/State/Shader/Chunks/OSGShaderExecutableVarChunk.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 "OSGShaderExecutableVarChunk.h"
  49
  50 #include "OSGShaderVariables.h"
  51 #include "OSGShaderProgramVariableChunk.h"
  52
  53 #include "OSGGLFuncProtos.h"
  54
  55 OSG_BEGIN_NAMESPACE
  56
  57 // Documentation for this class is emitted in the
  58 // OSGShaderExecutableVarChunkBase.cpp file.
  59 // To modify it, please change the .fcd file (OSGShaderExecutableVarChunk.fcd)
  60 // and regenerate the base file.
  61
  62 /***************************************************************************\
  63  *                           Class variables                               *
  64 \***************************************************************************/
  65
  66 StateChunkClass ShaderExecutableVarChunk::_class("ShaderExeVariable", 1, 8);
  67
  68 volatile UInt16 ShaderExecutableVarChunk::_uiChunkCounter = 1;
  69
  70 /***************************************************************************\
  71  *                           Class methods                                 *
  72 \***************************************************************************/
  73
  74 void ShaderExecutableVarChunk::initMethod(InitPhase ePhase)
  75 {
  76     Inherited::initMethod(ePhase);
  77
  78     if(ePhase == TypeObject::SystemPost)
  79     {
  80     }
  81 }
  82
  83
  84 /***************************************************************************\
  85  *                           Instance methods                              *
  86 \***************************************************************************/
  87
  88 /*-------------------------------------------------------------------------*\
  89  -  private                                                                 -
  90 \*-------------------------------------------------------------------------*/
  91
  92 /*----------------------- constructors & destructors ----------------------*/
  93
  94 ShaderExecutableVarChunk::ShaderExecutableVarChunk(void) :
  95      Inherited     ( ),
  96 #ifdef OSG_MULTISHADER_VARCHUNK
  97     _mShaderVarLocs( ),
  98 #endif
  99     _uiChunkId     (0)
 100 {
 101 }
 102
 103 ShaderExecutableVarChunk::ShaderExecutableVarChunk(
 104     const ShaderExecutableVarChunk &source) :
 105
 106      Inherited     (source),
 107 #ifdef OSG_MULTISHADER_VARCHUNK
 108     _mShaderVarLocs(      ),
 109 #endif
 110     _uiChunkId     (     0)
 111 {
 112 }
 113
 114 ShaderExecutableVarChunk::~ShaderExecutableVarChunk(void)
 115 {
 116 }
 117
 118 void ShaderExecutableVarChunk::onCreate(const ShaderExecutableVarChunk *source)
 119 {
 120     Inherited::onCreate(source);
 121
 122     if(GlobalSystemState == Startup)
 123         return;
 124
 125     _uiChunkId = _uiChunkCounter++;
 126 }
 127
 128 void ShaderExecutableVarChunk::onCreateAspect(
 129     const ShaderExecutableVarChunk *createAspect,
 130     const ShaderExecutableVarChunk *source      )
 131 {
 132     Inherited::onCreateAspect(createAspect, source);
 133
 134     _uiChunkId = createAspect->_uiChunkId;
 135 }
 136
 137 const StateChunkClass *ShaderExecutableVarChunk::getClass(void) const
 138 {
 139     return &_class;
 140 }
 141
 142 UInt16 ShaderExecutableVarChunk::getChunkId(void)
 143 {
 144     return _uiChunkId;
 145 }
 146
 147 void ShaderExecutableVarChunk::merge(ShaderProgramVariableChunk *pVar)
 148 {
 149     if(pVar == NULL)
 150         return;
 151
 152     if(_sfVariables.getValue() == NULL)
 153     {
 154         ShaderProgramVariablesUnrecPtr pVarNew =
 155             ShaderProgramVariables::createDependent(
 156                 this->getFieldFlags()->_bNamespaceMask);
 157
 158         setVariables(pVarNew);
 159     }
 160
 161     _sfVariables.getValue()->merge(pVar->getVariables(),
 162                                    this->editMFVariableLocations(),
 163                                    NULL);
 164
 165
 166     editMField(ProgramVarChunksFieldMask, _mfProgramVarChunks);
 167
 168     _mfProgramVarChunks.push_back(pVar);
 169
 170     pVar->addParent(this, ProgramVarChunksFieldId);
 171 }
 172
 173 /*----------------------------- class specific ----------------------------*/
 174
 175 void ShaderExecutableVarChunk::changed(ConstFieldMaskArg whichField,
 176                                        UInt32            origin,
 177                                        BitVector         details)
 178 {
 179     if(0x0000 != (whichField & ProgramVarChunksFieldMask))
 180     {
 181         if(origin == ChangedOrigin::Child)
 182         {
 183             this->remergeVariables();
 184         }
 185     }
 186
 187     Inherited::changed(whichField, origin, details);
 188 }
 189
 190 void ShaderExecutableVarChunk::dump(      UInt32    ,
 191                                     const BitVector ) const
 192 {
 193     SLOG << "Dump ShaderExecutableVarChunk NI" << std::endl;
 194 }
 195
 196 void ShaderExecutableVarChunk::activate(DrawEnv *pEnv, UInt32)
 197 {
 198     updateVariables(pEnv);
 199 }
 200
 201 void ShaderExecutableVarChunk::changeFrom(DrawEnv    *pEnv,
 202                                           StateChunk *pOther,
 203                                           UInt32            )
 204 {
 205     ShaderExecutableVarChunk *pOld =
 206         dynamic_cast<ShaderExecutableVarChunk *>(pOther);
 207
 208     if(pOld == NULL)
 209     {
 210         FWARNING(( "ShaderExecutableVar::changeFrom: caught non-SHLChunk!\n"));
 211         return;
 212     }
 213
 214     // SHLChunk didn't change so do nothing.
 215 #ifdef OSG_MULTISHADER_VARCHUNK
 216     if(pOld == this && pEnv->getActiveShader() == this->getActiveShader())
 217 #else
 218     if(pOld == this)
 219 #endif
 220     {
 221         return;
 222     }
 223
 224     updateVariables(pEnv);
 225 }
 226
 227 void ShaderExecutableVarChunk::deactivate(DrawEnv *, UInt32)
 228 {
 229 }
 230
 231 void ShaderExecutableVarChunk::updateVariables(DrawEnv *pEnv)
 232 {
 233     UInt32 uiProgram = pEnv->getActiveShader();
 234
 235     if(uiProgram == 0)
 236         return;
 237
 238 #ifdef OSG_MULTISHADER_VARCHUNK
 239     this->setActiveShader(uiProgram);
 240 #endif
 241
 242     pEnv->incNumShaderParamChanges();
 243
 244     const ShaderProgramVariables::MFVariablesType       *pMFVars   = NULL;
 245
 246     if(_sfVariables.getValue() != NULL)
 247     {
 248         pMFVars   = _sfVariables.getValue()->getMFVariables();
 249     }
 250
 251     if(pMFVars == NULL || pMFVars->size() == 0)
 252     {
 253         return;
 254     }
 255
 256     MFInt32 *pVarLocations = this->editMFVariableLocations();
 257
 258 #ifdef OSG_MULTISHADER_VARCHUNK
 259     ShaderVarLocMapIt mIt = _mShaderVarLocs.lower_bound(uiProgram);
 260
 261     if(mIt == _mShaderVarLocs.end() || mIt->first != uiProgram)
 262     {
 263         mIt = _mShaderVarLocs.insert(mIt,
 264                                      ShaderVarLocMapValueT(uiProgram,
 265                                                            MFInt32()));
 266
 267         mIt->second.resize(pVarLocations->size(), -1);
 268     }
 269
 270     pVarLocations = &(mIt->second);
 271 #endif
 272
 273     OSG_ASSERT(pMFVars->size() == pVarLocations->size());
 274
 275     MFInt32::iterator mLocIt = pVarLocations->begin();
 276
 277     ShaderProgramVariables::MFVariablesType::const_iterator mVarIt  =
 278         pMFVars->begin();
 279     ShaderProgramVariables::MFVariablesType::const_iterator mVarEnd =
 280         pMFVars->end  ();
 281
 282     bool warnUnknown = ShaderVariable::WarnUnknown;
 283
 284     for(; mVarIt != mVarEnd; ++mVarIt, ++mLocIt)
 285     {
 286         ShaderVariable *pVar = *mVarIt;
 287
 288         if(pVar == NULL)
 289             continue;
 290
 291         osgUniformShaderVariableSwitch(pEnv,    pVar,
 292                                        *mLocIt, uiProgram, warnUnknown);
 293     }
 294 }
 295
 296 void ShaderExecutableVarChunk::remergeVariables(void)
 297 {
 298     if(_sfVariables.getValue() == NULL)
 299     {
 300         ShaderProgramVariablesUnrecPtr pVar =
 301             ShaderProgramVariables::createDependent(
 302                 this->getFieldFlags()->_bNamespaceMask);
 303
 304         setVariables(pVar);
 305     }
 306     else
 307     {
 308         _sfVariables.getValue()->clearVariables();
 309
 310         this->editMFVariableLocations()->clear();
 311     }
 312
 313     MFProgramVarChunksType::const_iterator vIt  = _mfProgramVarChunks.begin();
 314     MFProgramVarChunksType::const_iterator vEnd = _mfProgramVarChunks.end  ();
 315
 316     for(; vIt != vEnd; ++vIt)
 317     {
 318         _sfVariables.getValue()->merge((*vIt)->getVariables(),
 319                                        this->editMFVariableLocations(),
 320                                        NULL);
 321     }
 322
 323 #ifdef OSG_MULTISHADER_VARCHUNK
 324     ShaderVarLocMapIt      mIt  = _mShaderVarLocs.begin();
 325     ShaderVarLocMapConstIt mEnd = _mShaderVarLocs.end  ();
 326
 327     SizeT uiVarLocSize = this->getMFVariableLocations()->size();
 328
 329     for(; mIt != mEnd; ++mIt)
 330     {
 331         std::fill( mIt->second.begin(),
 332                    mIt->second.end  (),
 333                   -1                  );
 334
 335         mIt->second.resize(uiVarLocSize, -1);
 336     }
 337 #endif
 338 }
 339
 340 OSG_END_NAMESPACE