Source/System/State/OpenGL/OSGPointChunk.cpp

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  30  *                                Changes                                    *
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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 "OSGGLEXT.h"
  49 #include "OSGGLFuncProtos.h"
  50
  51 #include "OSGWindow.h"
  52 #include "OSGDrawEnv.h"
  53
  54 #include "OSGPointChunk.h"
  55 #include "OSGConceptPropertyChecks.h"
  56
  57 OSG_USING_NAMESPACE
  58
  59 // Documentation for this class is emited in the
  60 // OSGPointChunkBase.cpp file.
  61 // To modify it, please change the .fcd file (OSGPointChunk.fcd) and
  62 // regenerate the base file.
  63
  64 /***************************************************************************\
  65  *                           Class variables                               *
  66 \***************************************************************************/
  67
  68 #ifndef OSG_OGL_ES2
  69 StateChunkClass PointChunk::_class("Point", 1, 50);
  70 #else
  71 StateChunkClass PointChunk::_class("Point", 1, 110);
  72 #endif
  73
  74 UInt32 PointChunk::_extPointParameters     = Window::invalidExtensionID;
  75 UInt32 PointChunk::_extPointSpriteARB      = Window::invalidExtensionID;
  76 UInt32 PointChunk::_extPointSpriteNV       = Window::invalidExtensionID;
  77 UInt32 PointChunk::_funcIdPointParameterf  = Window::invalidFunctionID;
  78 UInt32 PointChunk::_funcIdPointParameterfv = Window::invalidFunctionID;
  79
  80 /***************************************************************************\
  81  *                           Class methods                                 *
  82 \***************************************************************************/
  83
  84 void PointChunk::initMethod(InitPhase ePhase)
  85 {
  86     Inherited::initMethod(ePhase);
  87
  88     if(ePhase == TypeObject::SystemPost)
  89     {
  90         _extPointParameters     =
  91             Window::registerExtension("GL_ARB_point_parameters");
  92         _extPointSpriteARB      =
  93             Window::registerExtension("GL_ARB_point_sprite");
  94         _extPointSpriteNV       =
  95             Window::registerExtension("GL_NV_point_sprite");
  96         _funcIdPointParameterf  =
  97             Window::registerFunction (
  98                 OSG_DLSYM_UNDERSCORE"glPointParameterfARB",
  99                 _extPointParameters);
 100         _funcIdPointParameterfv =
 101             Window::registerFunction (
 102                 OSG_DLSYM_UNDERSCORE"glPointParameterfvARB",
 103                 _extPointParameters);
 104     }
 105 }
 106
 107 /***************************************************************************\
 108  *                           Instance methods                              *
 109 \***************************************************************************/
 110
 111 /*-------------------------------------------------------------------------*\
 112  -  private                                                                 -
 113 \*-------------------------------------------------------------------------*/
 114
 115 /*----------------------- constructors & destructors ----------------------*/
 116
 117 PointChunk::PointChunk(void) :
 118     Inherited()
 119 {
 120 }
 121
 122 PointChunk::PointChunk(const PointChunk &source) :
 123     Inherited(source)
 124 {
 125 }
 126
 127 PointChunk::~PointChunk(void)
 128 {
 129 }
 130
 131 /*------------------------- Chunk Class Access ---------------------------*/
 132
 133 const StateChunkClass *PointChunk::getClass(void) const
 134 {
 135     return &_class;
 136 }
 137
 138 /*----------------------------- class specific ----------------------------*/
 139
 140 void PointChunk::changed(ConstFieldMaskArg whichField,
 141                          UInt32            origin,
 142                          BitVector         details)
 143 {
 144     Inherited::changed(whichField, origin, details);
 145 }
 146
 147 void PointChunk::dump(      UInt32    ,
 148                          const BitVector ) const
 149 {
 150     SLOG << "Dump PointChunk NI" << std::endl;
 151 }
 152
 153 /*------------------------------ State ------------------------------------*/
 154
 155 void PointChunk::activate(DrawEnv *pEnv, UInt32)
 156 {
 157 #ifndef OSG_OGL_ES2
 158     if(getSize() != 1.f)
 159         glPointSize(getSize());
 160 #endif
 161
 162 #if !defined(OSG_OGL_COREONLY) || defined(OSG_CHECK_COREONLY)
 163     if(getSmooth())
 164         glEnable(GL_POINT_SMOOTH);
 165 #endif
 166
 167     pEnv->incNumChunkChanges();
 168
 169     Window *pWin = pEnv->getWindow();
 170
 171     osgSinkUnusedWarning(pWin);
 172
 173 #if GL_ARB_point_parameters
 174     if(getMinSize() >= 0.f)
 175     {
 176         if(pEnv->getWindow()->hasExtOrVersion(_extPointParameters, 0x0104))
 177         {
 178             OSGGETGLFUNCBYID_GL3( glPointParameterf,
 179                                   osgGlPointParameterf,
 180                                  _funcIdPointParameterf,
 181                                   pWin);
 182 #if !defined(OSG_OGL_COREONLY) || defined(OSG_CHECK_COREONLY)
 183             OSGGETGLFUNCBYID_GL3( glPointParameterfv,
 184                                   osgGlPointParameterfv,
 185                                  _funcIdPointParameterfv,
 186                                   pWin);
 187
 188             osgGlPointParameterf(GL_POINT_SIZE_MIN_ARB, getMinSize());
 189             osgGlPointParameterf(GL_POINT_SIZE_MAX_ARB, getMaxSize());
 190 #endif
 191             osgGlPointParameterf(GL_POINT_FADE_THRESHOLD_SIZE_ARB,
 192                                  getFadeThreshold());
 193
 194 #if !defined(OSG_OGL_COREONLY) || defined(OSG_CHECK_COREONLY)
 195             GLfloat att[3] = { getConstantAttenuation (),
 196                                getLinearAttenuation   (),
 197                                getQuadraticAttenuation() };
 198
 199             osgGlPointParameterfv(GL_POINT_DISTANCE_ATTENUATION_ARB, att);
 200 #endif
 201         }
 202
 203     }
 204 #endif
 205
 206 #if !defined(OSG_OGL_COREONLY) || defined(OSG_CHECK_COREONLY)
 207 #if GL_ARB_point_sprite
 208     if(getSprite())
 209     {
 210         if(pEnv->getWindow()->hasExtOrVersion(_extPointSpriteARB, 0x0200))
 211         {
 212 #if GL_NV_point_sprite
 213             if(pEnv->getWindow()->hasExtension(_extPointSpriteNV))
 214             {
 215                 OSGGETGLFUNCBYID_GL3( glPointParameterf,
 216                                       osgGlPointParameterf,
 217                                      _funcIdPointParameterf,
 218                                       pWin);
 219
 220                 osgGlPointParameterf(GL_POINT_SPRITE_R_MODE_NV,
 221                                      Real32(getRMode()));
 222             }
 223 #endif
 224
 225             glEnable(GL_POINT_SPRITE_ARB);
 226         }
 227
 228     }
 229 #endif
 230 #endif
 231 #if ! defined(GL_ARB_point_parameters) && ! defined(GL_ARB_point_sprite)
 232     pEnv;
 233 #endif
 234 }
 235
 236 void PointChunk::changeFrom(DrawEnv    *pEnv,
 237                             StateChunk *old_chunk,
 238                             UInt32               )
 239 {
 240     PointChunk *old = dynamic_cast<PointChunk *>(old_chunk);
 241
 242 #ifndef OSG_OGL_ES2
 243     if(getSize() != old->getSize())
 244         glPointSize(getSize());
 245 #endif
 246
 247 #if !defined(OSG_OGL_COREONLY) || defined(OSG_CHECK_COREONLY)
 248     if(getSmooth() && !old->getSmooth())
 249     {
 250         glEnable(GL_POINT_SMOOTH);
 251     }
 252     else if(!getSmooth() && old->getSmooth())
 253     {
 254         glDisable(GL_POINT_SMOOTH);
 255     }
 256 #endif
 257
 258     pEnv->incNumChunkChanges();
 259
 260     Window *pWin = pEnv->getWindow();
 261
 262     osgSinkUnusedWarning(pWin);
 263
 264 #if GL_ARB_point_parameters
 265     if(getMinSize() >= 0.f)
 266     {
 267         if(pEnv->getWindow()->hasExtOrVersion(_extPointParameters, 0x0104))
 268         {
 269             OSGGETGLFUNCBYID_GL3( glPointParameterf,
 270                                   osgGlPointParameterf,
 271                                  _funcIdPointParameterf,
 272                                   pWin);
 273 #if !defined(OSG_OGL_COREONLY) || defined(OSG_CHECK_COREONLY)
 274             OSGGETGLFUNCBYID_GL3( glPointParameterfv,
 275                                   osgGlPointParameterfv,
 276                                  _funcIdPointParameterfv,
 277                                   pWin);
 278
 279             osgGlPointParameterf(GL_POINT_SIZE_MIN_ARB, getMinSize());
 280             osgGlPointParameterf(GL_POINT_SIZE_MAX_ARB, getMaxSize());
 281 #endif
 282             osgGlPointParameterf(GL_POINT_FADE_THRESHOLD_SIZE_ARB,
 283                                  getFadeThreshold());
 284
 285 #if !defined(OSG_OGL_COREONLY) || defined(OSG_CHECK_COREONLY)
 286             GLfloat att[3] = { getConstantAttenuation (),
 287                                getLinearAttenuation   (),
 288                                getQuadraticAttenuation() };
 289
 290             osgGlPointParameterfv(GL_POINT_DISTANCE_ATTENUATION_ARB, att);
 291 #endif
 292         }
 293
 294     }
 295     else if(old->getMinSize() >= 0.f)
 296     {
 297         if(pEnv->getWindow()->hasExtOrVersion(_extPointParameters, 0x0104))
 298         {
 299             OSGGETGLFUNCBYID_GL3( glPointParameterf,
 300                                   osgGlPointParameterf,
 301                                  _funcIdPointParameterf,
 302                                   pWin);
 303 #if !defined(OSG_OGL_COREONLY) || defined(OSG_CHECK_COREONLY)
 304             OSGGETGLFUNCBYID_GL3( glPointParameterfv,
 305                                   osgGlPointParameterfv,
 306                                  _funcIdPointParameterfv,
 307                                   pWin);
 308
 309             osgGlPointParameterf(GL_POINT_SIZE_MIN_ARB, 0);
 310             osgGlPointParameterf(GL_POINT_SIZE_MAX_ARB, 1e10);
 311 #endif
 312             osgGlPointParameterf(GL_POINT_FADE_THRESHOLD_SIZE_ARB, 1);
 313
 314 #if !defined(OSG_OGL_COREONLY) || defined(OSG_CHECK_COREONLY)
 315             GLfloat att[3] = { 1, 0, 0 };
 316
 317             osgGlPointParameterfv(GL_POINT_DISTANCE_ATTENUATION_ARB, att);
 318 #endif
 319         }
 320     }
 321 #endif
 322
 323 #if !defined(OSG_OGL_COREONLY) || defined(OSG_CHECK_COREONLY)
 324 #if GL_ARB_point_sprite
 325     if(getSprite() && !old->getSprite())
 326     {
 327         if(pEnv->getWindow()->hasExtOrVersion(_extPointSpriteARB, 0x0200))
 328         {
 329 #if GL_NV_point_sprite
 330             if(pEnv->getWindow()->hasExtension(_extPointSpriteNV))
 331             {
 332                 OSGGETGLFUNCBYID_GL3( glPointParameterf,
 333                                       osgGlPointParameterf,
 334                                      _funcIdPointParameterf,
 335                                       pWin);
 336
 337                 osgGlPointParameterf(GL_POINT_SPRITE_R_MODE_NV,
 338                                      Real32(getRMode()));
 339             }
 340 #endif
 341
 342             glEnable(GL_POINT_SPRITE_ARB);
 343         }
 344
 345     }
 346     else if(!getSprite() && old->getSprite())
 347     {
 348         if(pEnv->getWindow()->hasExtOrVersion(_extPointSpriteARB, 0x0200))
 349         {
 350            glDisable(GL_POINT_SPRITE_ARB);
 351         }
 352
 353     }
 354 #endif
 355 #endif
 356
 357 #if ! defined(GL_ARB_point_parameters) && ! defined(GL_ARB_point_sprite)
 358     pEnv;
 359 #endif
 360 }
 361
 362 void PointChunk::deactivate(DrawEnv *pEnv, UInt32)
 363 {
 364 #ifndef OSG_OGL_ES2
 365     if(getSize() != 1.f)
 366         glPointSize(1.f);
 367 #endif
 368
 369     Window *pWin = pEnv->getWindow();
 370
 371     osgSinkUnusedWarning(pWin);
 372
 373 #if !defined(OSG_OGL_COREONLY) || defined(OSG_CHECK_COREONLY)
 374     if(getSmooth())
 375         glDisable(GL_POINT_SMOOTH);
 376 #endif
 377
 378 #if GL_ARB_point_parameters
 379     if(getMinSize() >= 0.f)
 380     {
 381         if(pEnv->getWindow()->hasExtOrVersion(_extPointParameters, 0x0104))
 382         {
 383             OSGGETGLFUNCBYID_GL3( glPointParameterf,
 384                                   osgGlPointParameterf,
 385                                  _funcIdPointParameterf,
 386                                   pWin);
 387 #if !defined(OSG_OGL_COREONLY) || defined(OSG_CHECK_COREONLY)
 388             OSGGETGLFUNCBYID_GL3( glPointParameterfv,
 389                                   osgGlPointParameterfv,
 390                                  _funcIdPointParameterfv,
 391                                   pWin);
 392
 393             osgGlPointParameterf(GL_POINT_SIZE_MIN_ARB, 0);
 394             osgGlPointParameterf(GL_POINT_SIZE_MAX_ARB, 1e10);
 395 #endif
 396             osgGlPointParameterf(GL_POINT_FADE_THRESHOLD_SIZE_ARB, 1);
 397
 398 #if !defined(OSG_OGL_COREONLY) || defined(OSG_CHECK_COREONLY)
 399             GLfloat att[3] = { 1, 0, 0 };
 400
 401             osgGlPointParameterfv(GL_POINT_DISTANCE_ATTENUATION_ARB, att);
 402 #endif
 403         }
 404
 405     }
 406 #endif
 407
 408 #if !defined(OSG_OGL_COREONLY) || defined(OSG_CHECK_COREONLY)
 409 #if GL_ARB_point_sprite
 410     if(getSprite())
 411     {
 412         if(pEnv->getWindow()->hasExtOrVersion(_extPointSpriteARB, 0x0200))
 413         {
 414             glDisable(GL_POINT_SPRITE_ARB);
 415         }
 416
 417     }
 418 #endif
 419 #endif
 420
 421 #if ! defined(GL_ARB_point_parameters) && ! defined(GL_ARB_point_sprite)
 422     pEnv;
 423 #endif
 424 }
 425
 426 /*-------------------------- Comparison -----------------------------------*/
 427
 428 bool PointChunk::isTransparent(void) const
 429 {
 430     return getMinSize() >= 0.f;
 431 }
 432
 433 Real32 PointChunk::switchCost(StateChunk *)
 434 {
 435     return 0;
 436 }
 437
 438 bool PointChunk::operator < (const StateChunk &other) const
 439 {
 440     return this < &other;
 441 }
 442
 443 bool PointChunk::operator == (const StateChunk &other) const
 444 {
 445     PointChunk const *tother = dynamic_cast<PointChunk const*>(&other);
 446
 447     if(!tother)
 448         return false;
 449
 450     if(tother == this)
 451         return true;
 452
 453     if(getSize()                    != tother->getSize()                    ||
 454        getSmooth()                  != tother->getSmooth()                  ||
 455        getMinSize()                 != tother->getMinSize()                 ||
 456        getMaxSize()                 != tother->getMaxSize()                 ||
 457        getConstantAttenuation()     != tother->getConstantAttenuation()     ||
 458        getLinearAttenuation()       != tother->getLinearAttenuation()       ||
 459        getQuadraticAttenuation()    != tother->getQuadraticAttenuation()    ||
 460        getFadeThreshold()           != tother->getFadeThreshold()           ||
 461        getSprite()                  != tother->getSprite()                  ||
 462        getRMode()                   != tother->getRMode()                    )
 463     {
 464         return false;
 465     }
 466
 467     return true;
 468 }
 469
 470 bool PointChunk::operator != (const StateChunk &other) const
 471 {
 472     return ! (*this == other);
 473 }
 474
 475