| 1 | // Created on: 2012-01-26 |
| 2 | // Created by: Kirill GAVRILOV |
| 3 | // Copyright (c) 2012 OPEN CASCADE SAS |
| 4 | // |
| 5 | // The content of this file is subject to the Open CASCADE Technology Public |
| 6 | // License Version 6.5 (the "License"). You may not use the content of this file |
| 7 | // except in compliance with the License. Please obtain a copy of the License |
| 8 | // at http://www.opencascade.org and read it completely before using this file. |
| 9 | // |
| 10 | // The Initial Developer of the Original Code is Open CASCADE S.A.S., having its |
| 11 | // main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France. |
| 12 | // |
| 13 | // The Original Code and all software distributed under the License is |
| 14 | // distributed on an "AS IS" basis, without warranty of any kind, and the |
| 15 | // Initial Developer hereby disclaims all such warranties, including without |
| 16 | // limitation, any warranties of merchantability, fitness for a particular |
| 17 | // purpose or non-infringement. Please see the License for the specific terms |
| 18 | // and conditions governing the rights and limitations under the License. |
| 19 | |
| 20 | #if defined(_WIN32) |
| 21 | #include <windows.h> |
| 22 | #endif |
| 23 | |
| 24 | #include <OpenGl_Context.hxx> |
| 25 | |
| 26 | #include <OpenGl_ArbVBO.hxx> |
| 27 | #include <OpenGl_ArbTBO.hxx> |
| 28 | #include <OpenGl_ArbIns.hxx> |
| 29 | #include <OpenGl_ArbDbg.hxx> |
| 30 | #include <OpenGl_ExtFBO.hxx> |
| 31 | #include <OpenGl_ExtGS.hxx> |
| 32 | #include <OpenGl_GlCore20.hxx> |
| 33 | |
| 34 | #include <NCollection_Vector.hxx> |
| 35 | |
| 36 | #include <Standard_ProgramError.hxx> |
| 37 | |
| 38 | #if defined(_WIN32) |
| 39 | // |
| 40 | #elif defined(__APPLE__) && !defined(MACOSX_USE_GLX) |
| 41 | #include <dlfcn.h> |
| 42 | #else |
| 43 | #include <GL/glx.h> // glXGetProcAddress() |
| 44 | #endif |
| 45 | |
| 46 | // GL_NVX_gpu_memory_info |
| 47 | #ifndef GL_GPU_MEMORY_INFO_DEDICATED_VIDMEM_NVX |
| 48 | enum |
| 49 | { |
| 50 | GL_GPU_MEMORY_INFO_DEDICATED_VIDMEM_NVX = 0x9047, |
| 51 | GL_GPU_MEMORY_INFO_TOTAL_AVAILABLE_MEMORY_NVX = 0x9048, |
| 52 | GL_GPU_MEMORY_INFO_CURRENT_AVAILABLE_VIDMEM_NVX = 0x9049, |
| 53 | GL_GPU_MEMORY_INFO_EVICTION_COUNT_NVX = 0x904A, |
| 54 | GL_GPU_MEMORY_INFO_EVICTED_MEMORY_NVX = 0x904B |
| 55 | }; |
| 56 | #endif |
| 57 | |
| 58 | IMPLEMENT_STANDARD_HANDLE (OpenGl_Context, Standard_Transient) |
| 59 | IMPLEMENT_STANDARD_RTTIEXT(OpenGl_Context, Standard_Transient) |
| 60 | |
| 61 | //! Make record shorter to retrieve function pointer using variable with same name |
| 62 | #define FindProcShort(theStruct, theFunc) FindProc(#theFunc, theStruct->theFunc) |
| 63 | |
| 64 | namespace |
| 65 | { |
| 66 | static const Handle(OpenGl_Resource) NULL_GL_RESOURCE; |
| 67 | static const GLdouble OpenGl_DefaultPlaneEq[] = {0.0, 0.0, 0.0, 0.0}; |
| 68 | }; |
| 69 | |
| 70 | // ======================================================================= |
| 71 | // function : OpenGl_Context |
| 72 | // purpose : |
| 73 | // ======================================================================= |
| 74 | OpenGl_Context::OpenGl_Context (const Handle(OpenGl_Caps)& theCaps) |
| 75 | : core12 (NULL), |
| 76 | core13 (NULL), |
| 77 | core14 (NULL), |
| 78 | core15 (NULL), |
| 79 | core20 (NULL), |
| 80 | caps (!theCaps.IsNull() ? theCaps : new OpenGl_Caps()), |
| 81 | arbNPTW(Standard_False), |
| 82 | arbVBO (NULL), |
| 83 | arbTBO (NULL), |
| 84 | arbIns (NULL), |
| 85 | arbDbg (NULL), |
| 86 | extFBO (NULL), |
| 87 | extGS (NULL), |
| 88 | extBgra(Standard_False), |
| 89 | extAnis(Standard_False), |
| 90 | atiMem (Standard_False), |
| 91 | nvxMem (Standard_False), |
| 92 | mySharedResources (new OpenGl_ResourcesMap()), |
| 93 | myDelayed (new OpenGl_DelayReleaseMap()), |
| 94 | myReleaseQueue (new OpenGl_ResourcesQueue()), |
| 95 | myClippingState (), |
| 96 | myGlLibHandle (NULL), |
| 97 | myGlCore20 (NULL), |
| 98 | myMaxTexDim (1024), |
| 99 | myMaxClipPlanes (6), |
| 100 | myAnisoMax (1), |
| 101 | myGlVerMajor (0), |
| 102 | myGlVerMinor (0), |
| 103 | myIsFeedback (Standard_False), |
| 104 | myIsInitialized (Standard_False) |
| 105 | { |
| 106 | #if defined(MAC_OS_X_VERSION_10_3) && !defined(MACOSX_USE_GLX) |
| 107 | // Vendors can not extend functionality on this system |
| 108 | // and developers are limited to OpenGL support provided by Mac OS X SDK. |
| 109 | // We retrieve function pointers from system library |
| 110 | // to generalize extensions support on all platforms. |
| 111 | // In this way we also reach binary compatibility benefit between OS releases |
| 112 | // if some newest functionality is optionally used. |
| 113 | // Notice that GL version / extension availability checks are required |
| 114 | // because function pointers may be available but not functionality itself |
| 115 | // (depends on renderer). |
| 116 | myGlLibHandle = dlopen ("/System/Library/Frameworks/OpenGL.framework/Versions/Current/OpenGL", RTLD_LAZY); |
| 117 | #endif |
| 118 | } |
| 119 | |
| 120 | // ======================================================================= |
| 121 | // function : ~OpenGl_Context |
| 122 | // purpose : |
| 123 | // ======================================================================= |
| 124 | OpenGl_Context::~OpenGl_Context() |
| 125 | { |
| 126 | // release clean up queue |
| 127 | ReleaseDelayed(); |
| 128 | |
| 129 | // release shared resources if any |
| 130 | if (((const Handle(Standard_Transient)& )mySharedResources)->GetRefCount() <= 1) |
| 131 | { |
| 132 | for (NCollection_DataMap<TCollection_AsciiString, Handle(OpenGl_Resource)>::Iterator anIter (*mySharedResources); |
| 133 | anIter.More(); anIter.Next()) |
| 134 | { |
| 135 | anIter.Value()->Release (this); |
| 136 | } |
| 137 | } |
| 138 | mySharedResources.Nullify(); |
| 139 | myDelayed.Nullify(); |
| 140 | |
| 141 | delete myGlCore20; |
| 142 | delete arbVBO; |
| 143 | delete arbTBO; |
| 144 | delete arbIns; |
| 145 | delete arbDbg; |
| 146 | delete extFBO; |
| 147 | delete extGS; |
| 148 | } |
| 149 | |
| 150 | // ======================================================================= |
| 151 | // function : MaxDegreeOfAnisotropy |
| 152 | // purpose : |
| 153 | // ======================================================================= |
| 154 | Standard_Integer OpenGl_Context::MaxDegreeOfAnisotropy() const |
| 155 | { |
| 156 | return myAnisoMax; |
| 157 | } |
| 158 | |
| 159 | // ======================================================================= |
| 160 | // function : MaxTextureSize |
| 161 | // purpose : |
| 162 | // ======================================================================= |
| 163 | Standard_Integer OpenGl_Context::MaxTextureSize() const |
| 164 | { |
| 165 | return myMaxTexDim; |
| 166 | } |
| 167 | |
| 168 | // ======================================================================= |
| 169 | // function : MaxClipPlanes |
| 170 | // purpose : |
| 171 | // ======================================================================= |
| 172 | Standard_Integer OpenGl_Context::MaxClipPlanes() const |
| 173 | { |
| 174 | return myMaxClipPlanes; |
| 175 | } |
| 176 | |
| 177 | // ======================================================================= |
| 178 | // function : Share |
| 179 | // purpose : |
| 180 | // ======================================================================= |
| 181 | void OpenGl_Context::Share (const Handle(OpenGl_Context)& theShareCtx) |
| 182 | { |
| 183 | if (!theShareCtx.IsNull()) |
| 184 | { |
| 185 | mySharedResources = theShareCtx->mySharedResources; |
| 186 | myDelayed = theShareCtx->myDelayed; |
| 187 | myReleaseQueue = theShareCtx->myReleaseQueue; |
| 188 | } |
| 189 | } |
| 190 | |
| 191 | #if !defined(__APPLE__) || defined(MACOSX_USE_GLX) |
| 192 | |
| 193 | // ======================================================================= |
| 194 | // function : IsCurrent |
| 195 | // purpose : |
| 196 | // ======================================================================= |
| 197 | Standard_Boolean OpenGl_Context::IsCurrent() const |
| 198 | { |
| 199 | #if defined(_WIN32) |
| 200 | if (myWindowDC == NULL || myGContext == NULL) |
| 201 | { |
| 202 | return Standard_False; |
| 203 | } |
| 204 | return (( (HDC )myWindowDC == wglGetCurrentDC()) |
| 205 | && ((HGLRC )myGContext == wglGetCurrentContext())); |
| 206 | #else |
| 207 | if (myDisplay == NULL || myWindow == 0 || myGContext == 0) |
| 208 | { |
| 209 | return Standard_False; |
| 210 | } |
| 211 | |
| 212 | return ( ((Display* )myDisplay == glXGetCurrentDisplay()) |
| 213 | && ((GLXContext )myGContext == glXGetCurrentContext()) |
| 214 | && ((GLXDrawable )myWindow == glXGetCurrentDrawable())); |
| 215 | #endif |
| 216 | } |
| 217 | |
| 218 | // ======================================================================= |
| 219 | // function : MakeCurrent |
| 220 | // purpose : |
| 221 | // ======================================================================= |
| 222 | Standard_Boolean OpenGl_Context::MakeCurrent() |
| 223 | { |
| 224 | #if defined(_WIN32) |
| 225 | if (myWindowDC == NULL || myGContext == NULL) |
| 226 | { |
| 227 | Standard_ProgramError_Raise_if (myIsInitialized, "OpenGl_Context::Init() should be called before!"); |
| 228 | return Standard_False; |
| 229 | } |
| 230 | |
| 231 | // technically it should be safe to activate already bound GL context |
| 232 | // however some drivers (Intel etc.) may FAIL doing this for unknown reason |
| 233 | if (IsCurrent()) |
| 234 | { |
| 235 | return Standard_True; |
| 236 | } |
| 237 | else if (wglMakeCurrent ((HDC )myWindowDC, (HGLRC )myGContext) != TRUE) |
| 238 | { |
| 239 | // notice that glGetError() couldn't be used here! |
| 240 | wchar_t* aMsgBuff = NULL; |
| 241 | DWORD anErrorCode = GetLastError(); |
| 242 | FormatMessageW (FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, |
| 243 | NULL, anErrorCode, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (wchar_t* )&aMsgBuff, 0, NULL); |
| 244 | if (aMsgBuff != NULL) |
| 245 | { |
| 246 | std::wcerr << L"OpenGL interface: wglMakeCurrent() failed. " << aMsgBuff << L" (" << int(anErrorCode) << L")\n"; |
| 247 | LocalFree (aMsgBuff); |
| 248 | } |
| 249 | else |
| 250 | { |
| 251 | std::wcerr << L"OpenGL interface: wglMakeCurrent() failed with #" << int(anErrorCode) << L" error code\n"; |
| 252 | } |
| 253 | return Standard_False; |
| 254 | } |
| 255 | #else |
| 256 | if (myDisplay == NULL || myWindow == 0 || myGContext == 0) |
| 257 | { |
| 258 | Standard_ProgramError_Raise_if (myIsInitialized, "OpenGl_Context::Init() should be called before!"); |
| 259 | return Standard_False; |
| 260 | } |
| 261 | |
| 262 | if (!glXMakeCurrent ((Display* )myDisplay, (GLXDrawable )myWindow, (GLXContext )myGContext)) |
| 263 | { |
| 264 | // if there is no current context it might be impossible to use glGetError() correctly |
| 265 | //std::cerr << "glXMakeCurrent() failed!\n"; |
| 266 | return Standard_False; |
| 267 | } |
| 268 | #endif |
| 269 | return Standard_True; |
| 270 | } |
| 271 | |
| 272 | // ======================================================================= |
| 273 | // function : SwapBuffers |
| 274 | // purpose : |
| 275 | // ======================================================================= |
| 276 | void OpenGl_Context::SwapBuffers() |
| 277 | { |
| 278 | #if defined(_WIN32) |
| 279 | if ((HDC )myWindowDC != NULL) |
| 280 | { |
| 281 | ::SwapBuffers ((HDC )myWindowDC); |
| 282 | glFlush(); |
| 283 | } |
| 284 | #else |
| 285 | if ((Display* )myDisplay != NULL) |
| 286 | { |
| 287 | glXSwapBuffers ((Display* )myDisplay, (GLXDrawable )myWindow); |
| 288 | } |
| 289 | #endif |
| 290 | } |
| 291 | |
| 292 | #endif // __APPLE__ |
| 293 | |
| 294 | // ======================================================================= |
| 295 | // function : findProc |
| 296 | // purpose : |
| 297 | // ======================================================================= |
| 298 | void* OpenGl_Context::findProc (const char* theFuncName) |
| 299 | { |
| 300 | #if defined(_WIN32) |
| 301 | return wglGetProcAddress (theFuncName); |
| 302 | #elif defined(__APPLE__) && !defined(MACOSX_USE_GLX) |
| 303 | return (myGlLibHandle != NULL) ? dlsym (myGlLibHandle, theFuncName) : NULL; |
| 304 | #else |
| 305 | return (void* )glXGetProcAddress ((const GLubyte* )theFuncName); |
| 306 | #endif |
| 307 | } |
| 308 | |
| 309 | // ======================================================================= |
| 310 | // function : CheckExtension |
| 311 | // purpose : |
| 312 | // ======================================================================= |
| 313 | Standard_Boolean OpenGl_Context::CheckExtension (const char* theExtName) const |
| 314 | { |
| 315 | if (theExtName == NULL) |
| 316 | { |
| 317 | std::cerr << "CheckExtension called with NULL string!\n"; |
| 318 | return Standard_False; |
| 319 | } |
| 320 | |
| 321 | // available since OpenGL 3.0 |
| 322 | // and the ONLY way to check extensions with OpenGL 3.1+ core profile |
| 323 | /**if (IsGlGreaterEqual (3, 0)) |
| 324 | { |
| 325 | GLint anExtNb = 0; |
| 326 | glGetIntegerv (GL_NUM_EXTENSIONS, &anExtNb); |
| 327 | for (GLint anIter = 0; anIter < anExtNb; ++anIter) |
| 328 | { |
| 329 | const char* anExtension = (const char* )core30->glGetStringi (GL_EXTENSIONS, (GLuint )anIter); |
| 330 | if (anExtension[anExtNameLen] == '\0' && |
| 331 | strncmp (anExtension, theExtName, anExtNameLen) == 0) |
| 332 | { |
| 333 | return Standard_True; |
| 334 | } |
| 335 | } |
| 336 | return Standard_False; |
| 337 | }*/ |
| 338 | |
| 339 | // use old way with huge string for all extensions |
| 340 | const char* anExtString = (const char* )glGetString (GL_EXTENSIONS); |
| 341 | if (anExtString == NULL) |
| 342 | { |
| 343 | std::cerr << "glGetString (GL_EXTENSIONS) returns NULL! No GL context?\n"; |
| 344 | return Standard_False; |
| 345 | } |
| 346 | return CheckExtension (anExtString, theExtName); |
| 347 | } |
| 348 | |
| 349 | // ======================================================================= |
| 350 | // function : CheckExtension |
| 351 | // purpose : |
| 352 | // ======================================================================= |
| 353 | Standard_Boolean OpenGl_Context::CheckExtension (const char* theExtString, |
| 354 | const char* theExtName) |
| 355 | { |
| 356 | if (theExtString == NULL) |
| 357 | { |
| 358 | return Standard_False; |
| 359 | } |
| 360 | |
| 361 | // Search for theExtName in the extensions string. |
| 362 | // Use of strstr() is not sufficient because extension names can be prefixes of other extension names. |
| 363 | char* aPtrIter = (char* )theExtString; |
| 364 | const char* aPtrEnd = aPtrIter + strlen (theExtString); |
| 365 | const size_t anExtNameLen = strlen (theExtName); |
| 366 | while (aPtrIter < aPtrEnd) |
| 367 | { |
| 368 | const size_t n = strcspn (aPtrIter, " "); |
| 369 | if ((n == anExtNameLen) && (strncmp (aPtrIter, theExtName, anExtNameLen) == 0)) |
| 370 | { |
| 371 | return Standard_True; |
| 372 | } |
| 373 | aPtrIter += (n + 1); |
| 374 | } |
| 375 | return Standard_False; |
| 376 | } |
| 377 | |
| 378 | #if !defined(__APPLE__) || defined(MACOSX_USE_GLX) |
| 379 | |
| 380 | // ======================================================================= |
| 381 | // function : Init |
| 382 | // purpose : |
| 383 | // ======================================================================= |
| 384 | Standard_Boolean OpenGl_Context::Init() |
| 385 | { |
| 386 | if (myIsInitialized) |
| 387 | { |
| 388 | return Standard_True; |
| 389 | } |
| 390 | |
| 391 | #if defined(_WIN32) |
| 392 | myWindowDC = (Aspect_Handle )wglGetCurrentDC(); |
| 393 | myGContext = (Aspect_RenderingContext )wglGetCurrentContext(); |
| 394 | #else |
| 395 | myDisplay = (Aspect_Display )glXGetCurrentDisplay(); |
| 396 | myGContext = (Aspect_RenderingContext )glXGetCurrentContext(); |
| 397 | myWindow = (Aspect_Drawable )glXGetCurrentDrawable(); |
| 398 | #endif |
| 399 | if (myGContext == NULL) |
| 400 | { |
| 401 | return Standard_False; |
| 402 | } |
| 403 | |
| 404 | init(); |
| 405 | myIsInitialized = Standard_True; |
| 406 | return Standard_True; |
| 407 | } |
| 408 | |
| 409 | #endif // __APPLE__ |
| 410 | |
| 411 | // ======================================================================= |
| 412 | // function : Init |
| 413 | // purpose : |
| 414 | // ======================================================================= |
| 415 | #if defined(_WIN32) |
| 416 | Standard_Boolean OpenGl_Context::Init (const Aspect_Handle theWindow, |
| 417 | const Aspect_Handle theWindowDC, |
| 418 | const Aspect_RenderingContext theGContext) |
| 419 | #elif defined(__APPLE__) && !defined(MACOSX_USE_GLX) |
| 420 | Standard_Boolean OpenGl_Context::Init (const void* theGContext) |
| 421 | #else |
| 422 | Standard_Boolean OpenGl_Context::Init (const Aspect_Drawable theWindow, |
| 423 | const Aspect_Display theDisplay, |
| 424 | const Aspect_RenderingContext theGContext) |
| 425 | #endif |
| 426 | { |
| 427 | Standard_ProgramError_Raise_if (myIsInitialized, "OpenGl_Context::Init() should be called only once!"); |
| 428 | #if defined(_WIN32) |
| 429 | myWindow = theWindow; |
| 430 | myGContext = theGContext; |
| 431 | myWindowDC = theWindowDC; |
| 432 | #elif defined(__APPLE__) && !defined(MACOSX_USE_GLX) |
| 433 | myGContext = (void* )theGContext; |
| 434 | #else |
| 435 | myWindow = theWindow; |
| 436 | myGContext = theGContext; |
| 437 | myDisplay = theDisplay; |
| 438 | #endif |
| 439 | if (myGContext == NULL || !MakeCurrent()) |
| 440 | { |
| 441 | return Standard_False; |
| 442 | } |
| 443 | |
| 444 | init(); |
| 445 | myIsInitialized = Standard_True; |
| 446 | return Standard_True; |
| 447 | } |
| 448 | |
| 449 | // ======================================================================= |
| 450 | // function : ResetErrors |
| 451 | // purpose : |
| 452 | // ======================================================================= |
| 453 | void OpenGl_Context::ResetErrors() |
| 454 | { |
| 455 | while (glGetError() != GL_NO_ERROR) |
| 456 | { |
| 457 | // |
| 458 | } |
| 459 | } |
| 460 | |
| 461 | // ======================================================================= |
| 462 | // function : readGlVersion |
| 463 | // purpose : |
| 464 | // ======================================================================= |
| 465 | void OpenGl_Context::readGlVersion() |
| 466 | { |
| 467 | // reset values |
| 468 | myGlVerMajor = 0; |
| 469 | myGlVerMinor = 0; |
| 470 | |
| 471 | // available since OpenGL 3.0 |
| 472 | GLint aMajor = 0, aMinor = 0; |
| 473 | glGetIntegerv (GL_MAJOR_VERSION, &aMajor); |
| 474 | glGetIntegerv (GL_MINOR_VERSION, &aMinor); |
| 475 | // glGetError() sometimes does not report an error here even if |
| 476 | // GL does not know GL_MAJOR_VERSION and GL_MINOR_VERSION constants. |
| 477 | // This happens on some rendereres like e.g. Cygwin MESA. |
| 478 | // Thus checking additionally if GL has put anything to |
| 479 | // the output variables. |
| 480 | if (glGetError() == GL_NO_ERROR && aMajor != 0 && aMinor != 0) |
| 481 | { |
| 482 | myGlVerMajor = aMajor; |
| 483 | myGlVerMinor = aMinor; |
| 484 | return; |
| 485 | } |
| 486 | ResetErrors(); |
| 487 | |
| 488 | // Read version string. |
| 489 | // Notice that only first two numbers splitted by point '2.1 XXXXX' are significant. |
| 490 | // Following trash (after space) is vendor-specific. |
| 491 | // New drivers also returns micro version of GL like '3.3.0' which has no meaning |
| 492 | // and should be considered as vendor-specific too. |
| 493 | const char* aVerStr = (const char* )glGetString (GL_VERSION); |
| 494 | if (aVerStr == NULL || *aVerStr == '\0') |
| 495 | { |
| 496 | // invalid GL context |
| 497 | return; |
| 498 | } |
| 499 | |
| 500 | // parse string for major number |
| 501 | char aMajorStr[32]; |
| 502 | char aMinorStr[32]; |
| 503 | size_t aMajIter = 0; |
| 504 | while (aVerStr[aMajIter] >= '0' && aVerStr[aMajIter] <= '9') |
| 505 | { |
| 506 | ++aMajIter; |
| 507 | } |
| 508 | if (aMajIter == 0 || aMajIter >= sizeof(aMajorStr)) |
| 509 | { |
| 510 | return; |
| 511 | } |
| 512 | memcpy (aMajorStr, aVerStr, aMajIter); |
| 513 | aMajorStr[aMajIter] = '\0'; |
| 514 | |
| 515 | // parse string for minor number |
| 516 | aVerStr += aMajIter + 1; |
| 517 | size_t aMinIter = 0; |
| 518 | while (aVerStr[aMinIter] >= '0' && aVerStr[aMinIter] <= '9') |
| 519 | { |
| 520 | ++aMinIter; |
| 521 | } |
| 522 | if (aMinIter == 0 || aMinIter >= sizeof(aMinorStr)) |
| 523 | { |
| 524 | return; |
| 525 | } |
| 526 | memcpy (aMinorStr, aVerStr, aMinIter); |
| 527 | aMinorStr[aMinIter] = '\0'; |
| 528 | |
| 529 | // read numbers |
| 530 | myGlVerMajor = atoi (aMajorStr); |
| 531 | myGlVerMinor = atoi (aMinorStr); |
| 532 | |
| 533 | if (myGlVerMajor <= 0) |
| 534 | { |
| 535 | myGlVerMajor = 0; |
| 536 | myGlVerMinor = 0; |
| 537 | } |
| 538 | } |
| 539 | |
| 540 | static Standard_CString THE_DBGMSG_UNKNOWN = "UNKNOWN"; |
| 541 | static Standard_CString THE_DBGMSG_SOURCES[] = |
| 542 | { |
| 543 | "OpenGL", // GL_DEBUG_SOURCE_API_ARB |
| 544 | "Window System", // GL_DEBUG_SOURCE_WINDOW_SYSTEM_ARB |
| 545 | "Shader Compiler", // GL_DEBUG_SOURCE_SHADER_COMPILER_ARB |
| 546 | "Third Party", // GL_DEBUG_SOURCE_THIRD_PARTY_ARB |
| 547 | "Application", // GL_DEBUG_SOURCE_APPLICATION_ARB |
| 548 | "Other" // GL_DEBUG_SOURCE_OTHER_ARB |
| 549 | }; |
| 550 | |
| 551 | static Standard_CString THE_DBGMSG_TYPES[] = |
| 552 | { |
| 553 | "Error", // GL_DEBUG_TYPE_ERROR_ARB |
| 554 | "Deprecated", // GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR_ARB |
| 555 | "Undefined behavior", // GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR_ARB |
| 556 | "Portability", // GL_DEBUG_TYPE_PORTABILITY_ARB |
| 557 | "Performance", // GL_DEBUG_TYPE_PERFORMANCE_ARB |
| 558 | "Other" // GL_DEBUG_TYPE_OTHER_ARB |
| 559 | }; |
| 560 | |
| 561 | static Standard_CString THE_DBGMSG_SEV_HIGH = "High"; // GL_DEBUG_SEVERITY_HIGH_ARB |
| 562 | static Standard_CString THE_DBGMSG_SEV_MEDIUM = "Medium"; // GL_DEBUG_SEVERITY_MEDIUM_ARB |
| 563 | static Standard_CString THE_DBGMSG_SEV_LOW = "Low"; // GL_DEBUG_SEVERITY_LOW_ARB |
| 564 | |
| 565 | static void APIENTRY debugCallbackWrap(unsigned int theSource, |
| 566 | unsigned int theType, |
| 567 | unsigned int theId, |
| 568 | unsigned int theSeverity, |
| 569 | int /*theLength*/, |
| 570 | const char* theMessage, |
| 571 | void* /*theUserParam*/) |
| 572 | { |
| 573 | //OpenGl_Context* aCtx = (OpenGl_Context* )theUserParam; |
| 574 | Standard_CString& aSrc = (theSource >= GL_DEBUG_SOURCE_API_ARB |
| 575 | && theSource <= GL_DEBUG_SOURCE_OTHER_ARB) |
| 576 | ? THE_DBGMSG_SOURCES[theSource - GL_DEBUG_SOURCE_API_ARB] |
| 577 | : THE_DBGMSG_UNKNOWN; |
| 578 | Standard_CString& aType = (theType >= GL_DEBUG_TYPE_ERROR_ARB |
| 579 | && theType <= GL_DEBUG_TYPE_OTHER_ARB) |
| 580 | ? THE_DBGMSG_TYPES[theType - GL_DEBUG_TYPE_ERROR_ARB] |
| 581 | : THE_DBGMSG_UNKNOWN; |
| 582 | Standard_CString& aSev = theSeverity == GL_DEBUG_SEVERITY_HIGH_ARB |
| 583 | ? THE_DBGMSG_SEV_HIGH |
| 584 | : (theSeverity == GL_DEBUG_SEVERITY_MEDIUM_ARB |
| 585 | ? THE_DBGMSG_SEV_MEDIUM |
| 586 | : THE_DBGMSG_SEV_LOW); |
| 587 | std::cerr << "Source:" << aSrc |
| 588 | << " | Type:" << aType |
| 589 | << " | ID:" << theId |
| 590 | << " | Severity:" << aSev |
| 591 | << " | Message:\n " << theMessage << "\n"; |
| 592 | } |
| 593 | |
| 594 | // ======================================================================= |
| 595 | // function : init |
| 596 | // purpose : |
| 597 | // ======================================================================= |
| 598 | void OpenGl_Context::init() |
| 599 | { |
| 600 | // read version |
| 601 | readGlVersion(); |
| 602 | |
| 603 | arbNPTW = CheckExtension ("GL_ARB_texture_non_power_of_two"); |
| 604 | extBgra = CheckExtension ("GL_EXT_bgra"); |
| 605 | extAnis = CheckExtension ("GL_EXT_texture_filter_anisotropic"); |
| 606 | atiMem = CheckExtension ("GL_ATI_meminfo"); |
| 607 | nvxMem = CheckExtension ("GL_NVX_gpu_memory_info"); |
| 608 | |
| 609 | // get number of maximum clipping planes |
| 610 | glGetIntegerv (GL_MAX_CLIP_PLANES, &myMaxClipPlanes); |
| 611 | glGetIntegerv (GL_MAX_TEXTURE_SIZE, &myMaxTexDim); |
| 612 | if (extAnis) |
| 613 | { |
| 614 | glGetIntegerv (GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &myAnisoMax); |
| 615 | } |
| 616 | |
| 617 | myClippingState.Init (myMaxClipPlanes); |
| 618 | |
| 619 | // initialize debug context extension |
| 620 | if (CheckExtension ("GL_ARB_debug_output")) |
| 621 | { |
| 622 | arbDbg = new OpenGl_ArbDbg(); |
| 623 | memset (arbDbg, 0, sizeof(OpenGl_ArbDbg)); // nullify whole structure |
| 624 | if (!FindProcShort (arbDbg, glDebugMessageControlARB) |
| 625 | || !FindProcShort (arbDbg, glDebugMessageInsertARB) |
| 626 | || !FindProcShort (arbDbg, glDebugMessageCallbackARB) |
| 627 | || !FindProcShort (arbDbg, glGetDebugMessageLogARB)) |
| 628 | { |
| 629 | delete arbDbg; |
| 630 | arbDbg = NULL; |
| 631 | } |
| 632 | if (arbDbg != NULL |
| 633 | && caps->contextDebug) |
| 634 | { |
| 635 | // setup default callback |
| 636 | arbDbg->glDebugMessageCallbackARB (debugCallbackWrap, this); |
| 637 | #ifdef DEB |
| 638 | glEnable (GL_DEBUG_OUTPUT_SYNCHRONOUS_ARB); |
| 639 | #endif |
| 640 | } |
| 641 | } |
| 642 | |
| 643 | // initialize VBO extension (ARB) |
| 644 | if (CheckExtension ("GL_ARB_vertex_buffer_object")) |
| 645 | { |
| 646 | arbVBO = new OpenGl_ArbVBO(); |
| 647 | memset (arbVBO, 0, sizeof(OpenGl_ArbVBO)); // nullify whole structure |
| 648 | if (!FindProcShort (arbVBO, glGenBuffersARB) |
| 649 | || !FindProcShort (arbVBO, glBindBufferARB) |
| 650 | || !FindProcShort (arbVBO, glBufferDataARB) |
| 651 | || !FindProcShort (arbVBO, glDeleteBuffersARB)) |
| 652 | { |
| 653 | delete arbVBO; |
| 654 | arbVBO = NULL; |
| 655 | } |
| 656 | } |
| 657 | |
| 658 | // initialize TBO extension (ARB) |
| 659 | if (CheckExtension ("GL_ARB_texture_buffer_object")) |
| 660 | { |
| 661 | arbTBO = new OpenGl_ArbTBO(); |
| 662 | memset (arbTBO, 0, sizeof(OpenGl_ArbTBO)); // nullify whole structure |
| 663 | if (!FindProcShort (arbTBO, glTexBufferARB)) |
| 664 | { |
| 665 | delete arbTBO; |
| 666 | arbTBO = NULL; |
| 667 | } |
| 668 | } |
| 669 | |
| 670 | // initialize hardware instancing extension (ARB) |
| 671 | if (CheckExtension ("GL_ARB_draw_instanced")) |
| 672 | { |
| 673 | arbIns = new OpenGl_ArbIns(); |
| 674 | memset (arbIns, 0, sizeof(OpenGl_ArbIns)); // nullify whole structure |
| 675 | if (!FindProcShort (arbIns, glDrawArraysInstancedARB) |
| 676 | || !FindProcShort (arbIns, glDrawElementsInstancedARB)) |
| 677 | { |
| 678 | delete arbIns; |
| 679 | arbIns = NULL; |
| 680 | } |
| 681 | } |
| 682 | |
| 683 | // initialize FBO extension (EXT) |
| 684 | if (CheckExtension ("GL_EXT_framebuffer_object")) |
| 685 | { |
| 686 | extFBO = new OpenGl_ExtFBO(); |
| 687 | memset (extFBO, 0, sizeof(OpenGl_ExtFBO)); // nullify whole structure |
| 688 | if (!FindProcShort (extFBO, glGenFramebuffersEXT) |
| 689 | || !FindProcShort (extFBO, glDeleteFramebuffersEXT) |
| 690 | || !FindProcShort (extFBO, glBindFramebufferEXT) |
| 691 | || !FindProcShort (extFBO, glFramebufferTexture2DEXT) |
| 692 | || !FindProcShort (extFBO, glCheckFramebufferStatusEXT) |
| 693 | || !FindProcShort (extFBO, glGenRenderbuffersEXT) |
| 694 | || !FindProcShort (extFBO, glDeleteRenderbuffersEXT) |
| 695 | || !FindProcShort (extFBO, glBindRenderbufferEXT) |
| 696 | || !FindProcShort (extFBO, glRenderbufferStorageEXT) |
| 697 | || !FindProcShort (extFBO, glFramebufferRenderbufferEXT) |
| 698 | || !FindProcShort (extFBO, glGenerateMipmapEXT)) |
| 699 | { |
| 700 | delete extFBO; |
| 701 | extFBO = NULL; |
| 702 | } |
| 703 | } |
| 704 | |
| 705 | // initialize GS extension (EXT) |
| 706 | if (CheckExtension ("GL_EXT_geometry_shader4")) |
| 707 | { |
| 708 | extGS = new OpenGl_ExtGS(); |
| 709 | memset (extGS, 0, sizeof(OpenGl_ExtGS)); // nullify whole structure |
| 710 | if (!FindProcShort (extGS, glProgramParameteriEXT)) |
| 711 | { |
| 712 | delete extGS; |
| 713 | extGS = NULL; |
| 714 | } |
| 715 | } |
| 716 | |
| 717 | myGlCore20 = new OpenGl_GlCore20(); |
| 718 | memset (myGlCore20, 0, sizeof(OpenGl_GlCore20)); // nullify whole structure |
| 719 | |
| 720 | // Check if OpenGL 1.2 core functionality is actually present |
| 721 | Standard_Boolean hasGlCore12 = IsGlGreaterEqual (1, 2) |
| 722 | && FindProcShort (myGlCore20, glBlendColor) |
| 723 | && FindProcShort (myGlCore20, glBlendEquation) |
| 724 | && FindProcShort (myGlCore20, glDrawRangeElements) |
| 725 | && FindProcShort (myGlCore20, glTexImage3D) |
| 726 | && FindProcShort (myGlCore20, glTexSubImage3D) |
| 727 | && FindProcShort (myGlCore20, glCopyTexSubImage3D); |
| 728 | |
| 729 | // Check if OpenGL 1.3 core functionality is actually present |
| 730 | Standard_Boolean hasGlCore13 = IsGlGreaterEqual (1, 3) |
| 731 | && FindProcShort (myGlCore20, glActiveTexture) |
| 732 | && FindProcShort (myGlCore20, glSampleCoverage) |
| 733 | && FindProcShort (myGlCore20, glCompressedTexImage3D) |
| 734 | && FindProcShort (myGlCore20, glCompressedTexImage2D) |
| 735 | && FindProcShort (myGlCore20, glCompressedTexImage1D) |
| 736 | && FindProcShort (myGlCore20, glCompressedTexSubImage3D) |
| 737 | && FindProcShort (myGlCore20, glCompressedTexSubImage2D) |
| 738 | && FindProcShort (myGlCore20, glCompressedTexSubImage1D) |
| 739 | && FindProcShort (myGlCore20, glGetCompressedTexImage) |
| 740 | // deprecated |
| 741 | && FindProcShort (myGlCore20, glClientActiveTexture) |
| 742 | && FindProcShort (myGlCore20, glMultiTexCoord1d) |
| 743 | && FindProcShort (myGlCore20, glMultiTexCoord1dv) |
| 744 | && FindProcShort (myGlCore20, glMultiTexCoord1f) |
| 745 | && FindProcShort (myGlCore20, glMultiTexCoord1fv) |
| 746 | && FindProcShort (myGlCore20, glMultiTexCoord1i) |
| 747 | && FindProcShort (myGlCore20, glMultiTexCoord1iv) |
| 748 | && FindProcShort (myGlCore20, glMultiTexCoord1s) |
| 749 | && FindProcShort (myGlCore20, glMultiTexCoord1sv) |
| 750 | && FindProcShort (myGlCore20, glMultiTexCoord2d) |
| 751 | && FindProcShort (myGlCore20, glMultiTexCoord2dv) |
| 752 | && FindProcShort (myGlCore20, glMultiTexCoord2f) |
| 753 | && FindProcShort (myGlCore20, glMultiTexCoord2fv) |
| 754 | && FindProcShort (myGlCore20, glMultiTexCoord2i) |
| 755 | && FindProcShort (myGlCore20, glMultiTexCoord2iv) |
| 756 | && FindProcShort (myGlCore20, glMultiTexCoord2s) |
| 757 | && FindProcShort (myGlCore20, glMultiTexCoord2sv) |
| 758 | && FindProcShort (myGlCore20, glMultiTexCoord3d) |
| 759 | && FindProcShort (myGlCore20, glMultiTexCoord3dv) |
| 760 | && FindProcShort (myGlCore20, glMultiTexCoord3f) |
| 761 | && FindProcShort (myGlCore20, glMultiTexCoord3fv) |
| 762 | && FindProcShort (myGlCore20, glMultiTexCoord3i) |
| 763 | && FindProcShort (myGlCore20, glMultiTexCoord3iv) |
| 764 | && FindProcShort (myGlCore20, glMultiTexCoord3s) |
| 765 | && FindProcShort (myGlCore20, glMultiTexCoord3sv) |
| 766 | && FindProcShort (myGlCore20, glMultiTexCoord4d) |
| 767 | && FindProcShort (myGlCore20, glMultiTexCoord4dv) |
| 768 | && FindProcShort (myGlCore20, glMultiTexCoord4f) |
| 769 | && FindProcShort (myGlCore20, glMultiTexCoord4fv) |
| 770 | && FindProcShort (myGlCore20, glMultiTexCoord4i) |
| 771 | && FindProcShort (myGlCore20, glMultiTexCoord4iv) |
| 772 | && FindProcShort (myGlCore20, glMultiTexCoord4s) |
| 773 | && FindProcShort (myGlCore20, glMultiTexCoord4sv) |
| 774 | && FindProcShort (myGlCore20, glLoadTransposeMatrixf) |
| 775 | && FindProcShort (myGlCore20, glLoadTransposeMatrixd) |
| 776 | && FindProcShort (myGlCore20, glMultTransposeMatrixf) |
| 777 | && FindProcShort (myGlCore20, glMultTransposeMatrixd); |
| 778 | |
| 779 | // Check if OpenGL 1.4 core functionality is actually present |
| 780 | Standard_Boolean hasGlCore14 = IsGlGreaterEqual (1, 4) |
| 781 | && FindProcShort (myGlCore20, glBlendFuncSeparate) |
| 782 | && FindProcShort (myGlCore20, glMultiDrawArrays) |
| 783 | && FindProcShort (myGlCore20, glMultiDrawElements) |
| 784 | && FindProcShort (myGlCore20, glPointParameterf) |
| 785 | && FindProcShort (myGlCore20, glPointParameterfv) |
| 786 | && FindProcShort (myGlCore20, glPointParameteri) |
| 787 | && FindProcShort (myGlCore20, glPointParameteriv); |
| 788 | |
| 789 | // Check if OpenGL 1.5 core functionality is actually present |
| 790 | Standard_Boolean hasGlCore15 = IsGlGreaterEqual (1, 5) |
| 791 | && FindProcShort (myGlCore20, glGenQueries) |
| 792 | && FindProcShort (myGlCore20, glDeleteQueries) |
| 793 | && FindProcShort (myGlCore20, glIsQuery) |
| 794 | && FindProcShort (myGlCore20, glBeginQuery) |
| 795 | && FindProcShort (myGlCore20, glEndQuery) |
| 796 | && FindProcShort (myGlCore20, glGetQueryiv) |
| 797 | && FindProcShort (myGlCore20, glGetQueryObjectiv) |
| 798 | && FindProcShort (myGlCore20, glGetQueryObjectuiv) |
| 799 | && FindProcShort (myGlCore20, glBindBuffer) |
| 800 | && FindProcShort (myGlCore20, glDeleteBuffers) |
| 801 | && FindProcShort (myGlCore20, glGenBuffers) |
| 802 | && FindProcShort (myGlCore20, glIsBuffer) |
| 803 | && FindProcShort (myGlCore20, glBufferData) |
| 804 | && FindProcShort (myGlCore20, glBufferSubData) |
| 805 | && FindProcShort (myGlCore20, glGetBufferSubData) |
| 806 | && FindProcShort (myGlCore20, glMapBuffer) |
| 807 | && FindProcShort (myGlCore20, glUnmapBuffer) |
| 808 | && FindProcShort (myGlCore20, glGetBufferParameteriv) |
| 809 | && FindProcShort (myGlCore20, glGetBufferPointerv); |
| 810 | |
| 811 | // Check if OpenGL 2.0 core functionality is actually present |
| 812 | Standard_Boolean hasGlCore20 = IsGlGreaterEqual (2, 0) |
| 813 | && FindProcShort (myGlCore20, glBlendEquationSeparate) |
| 814 | && FindProcShort (myGlCore20, glDrawBuffers) |
| 815 | && FindProcShort (myGlCore20, glStencilOpSeparate) |
| 816 | && FindProcShort (myGlCore20, glStencilFuncSeparate) |
| 817 | && FindProcShort (myGlCore20, glStencilMaskSeparate) |
| 818 | && FindProcShort (myGlCore20, glAttachShader) |
| 819 | && FindProcShort (myGlCore20, glBindAttribLocation) |
| 820 | && FindProcShort (myGlCore20, glCompileShader) |
| 821 | && FindProcShort (myGlCore20, glCreateProgram) |
| 822 | && FindProcShort (myGlCore20, glCreateShader) |
| 823 | && FindProcShort (myGlCore20, glDeleteProgram) |
| 824 | && FindProcShort (myGlCore20, glDeleteShader) |
| 825 | && FindProcShort (myGlCore20, glDetachShader) |
| 826 | && FindProcShort (myGlCore20, glDisableVertexAttribArray) |
| 827 | && FindProcShort (myGlCore20, glEnableVertexAttribArray) |
| 828 | && FindProcShort (myGlCore20, glGetActiveAttrib) |
| 829 | && FindProcShort (myGlCore20, glGetActiveUniform) |
| 830 | && FindProcShort (myGlCore20, glGetAttachedShaders) |
| 831 | && FindProcShort (myGlCore20, glGetAttribLocation) |
| 832 | && FindProcShort (myGlCore20, glGetProgramiv) |
| 833 | && FindProcShort (myGlCore20, glGetProgramInfoLog) |
| 834 | && FindProcShort (myGlCore20, glGetShaderiv) |
| 835 | && FindProcShort (myGlCore20, glGetShaderInfoLog) |
| 836 | && FindProcShort (myGlCore20, glGetShaderSource) |
| 837 | && FindProcShort (myGlCore20, glGetUniformLocation) |
| 838 | && FindProcShort (myGlCore20, glGetUniformfv) |
| 839 | && FindProcShort (myGlCore20, glGetUniformiv) |
| 840 | && FindProcShort (myGlCore20, glGetVertexAttribdv) |
| 841 | && FindProcShort (myGlCore20, glGetVertexAttribfv) |
| 842 | && FindProcShort (myGlCore20, glGetVertexAttribiv) |
| 843 | && FindProcShort (myGlCore20, glGetVertexAttribPointerv) |
| 844 | && FindProcShort (myGlCore20, glIsProgram) |
| 845 | && FindProcShort (myGlCore20, glIsShader) |
| 846 | && FindProcShort (myGlCore20, glLinkProgram) |
| 847 | && FindProcShort (myGlCore20, glShaderSource) |
| 848 | && FindProcShort (myGlCore20, glUseProgram) |
| 849 | && FindProcShort (myGlCore20, glUniform1f) |
| 850 | && FindProcShort (myGlCore20, glUniform2f) |
| 851 | && FindProcShort (myGlCore20, glUniform3f) |
| 852 | && FindProcShort (myGlCore20, glUniform4f) |
| 853 | && FindProcShort (myGlCore20, glUniform1i) |
| 854 | && FindProcShort (myGlCore20, glUniform2i) |
| 855 | && FindProcShort (myGlCore20, glUniform3i) |
| 856 | && FindProcShort (myGlCore20, glUniform4i) |
| 857 | && FindProcShort (myGlCore20, glUniform1fv) |
| 858 | && FindProcShort (myGlCore20, glUniform2fv) |
| 859 | && FindProcShort (myGlCore20, glUniform3fv) |
| 860 | && FindProcShort (myGlCore20, glUniform4fv) |
| 861 | && FindProcShort (myGlCore20, glUniform1iv) |
| 862 | && FindProcShort (myGlCore20, glUniform2iv) |
| 863 | && FindProcShort (myGlCore20, glUniform3iv) |
| 864 | && FindProcShort (myGlCore20, glUniform4iv) |
| 865 | && FindProcShort (myGlCore20, glUniformMatrix2fv) |
| 866 | && FindProcShort (myGlCore20, glUniformMatrix3fv) |
| 867 | && FindProcShort (myGlCore20, glUniformMatrix4fv) |
| 868 | && FindProcShort (myGlCore20, glValidateProgram) |
| 869 | && FindProcShort (myGlCore20, glVertexAttrib1d) |
| 870 | && FindProcShort (myGlCore20, glVertexAttrib1dv) |
| 871 | && FindProcShort (myGlCore20, glVertexAttrib1f) |
| 872 | && FindProcShort (myGlCore20, glVertexAttrib1fv) |
| 873 | && FindProcShort (myGlCore20, glVertexAttrib1s) |
| 874 | && FindProcShort (myGlCore20, glVertexAttrib1sv) |
| 875 | && FindProcShort (myGlCore20, glVertexAttrib2d) |
| 876 | && FindProcShort (myGlCore20, glVertexAttrib2dv) |
| 877 | && FindProcShort (myGlCore20, glVertexAttrib2f) |
| 878 | && FindProcShort (myGlCore20, glVertexAttrib2fv) |
| 879 | && FindProcShort (myGlCore20, glVertexAttrib2s) |
| 880 | && FindProcShort (myGlCore20, glVertexAttrib2sv) |
| 881 | && FindProcShort (myGlCore20, glVertexAttrib3d) |
| 882 | && FindProcShort (myGlCore20, glVertexAttrib3dv) |
| 883 | && FindProcShort (myGlCore20, glVertexAttrib3f) |
| 884 | && FindProcShort (myGlCore20, glVertexAttrib3fv) |
| 885 | && FindProcShort (myGlCore20, glVertexAttrib3s) |
| 886 | && FindProcShort (myGlCore20, glVertexAttrib3sv) |
| 887 | && FindProcShort (myGlCore20, glVertexAttrib4Nbv) |
| 888 | && FindProcShort (myGlCore20, glVertexAttrib4Niv) |
| 889 | && FindProcShort (myGlCore20, glVertexAttrib4Nsv) |
| 890 | && FindProcShort (myGlCore20, glVertexAttrib4Nub) |
| 891 | && FindProcShort (myGlCore20, glVertexAttrib4Nubv) |
| 892 | && FindProcShort (myGlCore20, glVertexAttrib4Nuiv) |
| 893 | && FindProcShort (myGlCore20, glVertexAttrib4Nusv) |
| 894 | && FindProcShort (myGlCore20, glVertexAttrib4bv) |
| 895 | && FindProcShort (myGlCore20, glVertexAttrib4d) |
| 896 | && FindProcShort (myGlCore20, glVertexAttrib4dv) |
| 897 | && FindProcShort (myGlCore20, glVertexAttrib4f) |
| 898 | && FindProcShort (myGlCore20, glVertexAttrib4fv) |
| 899 | && FindProcShort (myGlCore20, glVertexAttrib4iv) |
| 900 | && FindProcShort (myGlCore20, glVertexAttrib4s) |
| 901 | && FindProcShort (myGlCore20, glVertexAttrib4sv) |
| 902 | && FindProcShort (myGlCore20, glVertexAttrib4ubv) |
| 903 | && FindProcShort (myGlCore20, glVertexAttrib4uiv) |
| 904 | && FindProcShort (myGlCore20, glVertexAttrib4usv) |
| 905 | && FindProcShort (myGlCore20, glVertexAttribPointer); |
| 906 | |
| 907 | if (!hasGlCore12) |
| 908 | { |
| 909 | myGlVerMajor = 1; |
| 910 | myGlVerMinor = 1; |
| 911 | return; |
| 912 | } |
| 913 | else |
| 914 | { |
| 915 | core12 = myGlCore20; |
| 916 | } |
| 917 | if (!hasGlCore13) |
| 918 | { |
| 919 | myGlVerMajor = 1; |
| 920 | myGlVerMinor = 2; |
| 921 | return; |
| 922 | } |
| 923 | else |
| 924 | { |
| 925 | core13 = myGlCore20; |
| 926 | } |
| 927 | if(!hasGlCore14) |
| 928 | { |
| 929 | myGlVerMajor = 1; |
| 930 | myGlVerMinor = 3; |
| 931 | return; |
| 932 | } |
| 933 | else |
| 934 | { |
| 935 | core14 = myGlCore20; |
| 936 | } |
| 937 | if(!hasGlCore15) |
| 938 | { |
| 939 | myGlVerMajor = 1; |
| 940 | myGlVerMinor = 4; |
| 941 | return; |
| 942 | } |
| 943 | else |
| 944 | { |
| 945 | core15 = myGlCore20; |
| 946 | } |
| 947 | if(!hasGlCore20) |
| 948 | { |
| 949 | myGlVerMajor = 1; |
| 950 | myGlVerMinor = 5; |
| 951 | } |
| 952 | else |
| 953 | { |
| 954 | core20 = myGlCore20; |
| 955 | } |
| 956 | } |
| 957 | // ======================================================================= |
| 958 | // function : IsFeedback |
| 959 | // purpose : |
| 960 | // ======================================================================= |
| 961 | Standard_Boolean OpenGl_Context::IsFeedback() const |
| 962 | { |
| 963 | return myIsFeedback; |
| 964 | } |
| 965 | |
| 966 | // ======================================================================= |
| 967 | // function : SetFeedback |
| 968 | // purpose : |
| 969 | // ======================================================================= |
| 970 | void OpenGl_Context::SetFeedback (const Standard_Boolean theFeedbackOn) |
| 971 | { |
| 972 | myIsFeedback = theFeedbackOn; |
| 973 | } |
| 974 | |
| 975 | // ======================================================================= |
| 976 | // function : MemoryInfo |
| 977 | // purpose : |
| 978 | // ======================================================================= |
| 979 | Standard_Size OpenGl_Context::AvailableMemory() const |
| 980 | { |
| 981 | if (atiMem) |
| 982 | { |
| 983 | // this is actually information for VBO pool |
| 984 | // however because pools are mostly shared |
| 985 | // it can be used for total GPU memory estimations |
| 986 | GLint aMemInfo[4]; |
| 987 | aMemInfo[0] = 0; |
| 988 | glGetIntegerv (GL_VBO_FREE_MEMORY_ATI, aMemInfo); |
| 989 | // returned value is in KiB, however this maybe changed in future |
| 990 | return Standard_Size(aMemInfo[0]) * 1024; |
| 991 | } |
| 992 | else if (nvxMem) |
| 993 | { |
| 994 | // current available dedicated video memory (in KiB), currently unused GPU memory |
| 995 | GLint aMemInfo = 0; |
| 996 | glGetIntegerv (GL_GPU_MEMORY_INFO_CURRENT_AVAILABLE_VIDMEM_NVX, &aMemInfo); |
| 997 | return Standard_Size(aMemInfo) * 1024; |
| 998 | } |
| 999 | return 0; |
| 1000 | } |
| 1001 | |
| 1002 | // ======================================================================= |
| 1003 | // function : MemoryInfo |
| 1004 | // purpose : |
| 1005 | // ======================================================================= |
| 1006 | TCollection_AsciiString OpenGl_Context::MemoryInfo() const |
| 1007 | { |
| 1008 | TCollection_AsciiString anInfo; |
| 1009 | if (atiMem) |
| 1010 | { |
| 1011 | GLint aValues[4]; |
| 1012 | memset (aValues, 0, sizeof(aValues)); |
| 1013 | glGetIntegerv (GL_VBO_FREE_MEMORY_ATI, aValues); |
| 1014 | |
| 1015 | // total memory free in the pool |
| 1016 | anInfo += TCollection_AsciiString (" GPU free memory: ") + (aValues[0] / 1024) + " MiB\n"; |
| 1017 | |
| 1018 | // largest available free block in the pool |
| 1019 | anInfo += TCollection_AsciiString (" Largest free block: ") + (aValues[1] / 1024) + " MiB\n"; |
| 1020 | if (aValues[2] != aValues[0]) |
| 1021 | { |
| 1022 | // total auxiliary memory free |
| 1023 | anInfo += TCollection_AsciiString (" Free memory: ") + (aValues[2] / 1024) + " MiB\n"; |
| 1024 | } |
| 1025 | } |
| 1026 | else if (nvxMem) |
| 1027 | { |
| 1028 | //current available dedicated video memory (in KiB), currently unused GPU memory |
| 1029 | GLint aValue = 0; |
| 1030 | glGetIntegerv (GL_GPU_MEMORY_INFO_CURRENT_AVAILABLE_VIDMEM_NVX, &aValue); |
| 1031 | anInfo += TCollection_AsciiString (" GPU free memory: ") + (aValue / 1024) + " MiB\n"; |
| 1032 | |
| 1033 | // dedicated video memory, total size (in KiB) of the GPU memory |
| 1034 | GLint aDedicated = 0; |
| 1035 | glGetIntegerv (GL_GPU_MEMORY_INFO_DEDICATED_VIDMEM_NVX, &aDedicated); |
| 1036 | anInfo += TCollection_AsciiString (" GPU memory: ") + (aDedicated / 1024) + " MiB\n"; |
| 1037 | |
| 1038 | // total available memory, total size (in KiB) of the memory available for allocations |
| 1039 | glGetIntegerv (GL_GPU_MEMORY_INFO_TOTAL_AVAILABLE_MEMORY_NVX, &aValue); |
| 1040 | if (aValue != aDedicated) |
| 1041 | { |
| 1042 | // different only for special configurations |
| 1043 | anInfo += TCollection_AsciiString (" Total memory: ") + (aValue / 1024) + " MiB\n"; |
| 1044 | } |
| 1045 | } |
| 1046 | return anInfo; |
| 1047 | } |
| 1048 | |
| 1049 | |
| 1050 | // ======================================================================= |
| 1051 | // function : GetResource |
| 1052 | // purpose : |
| 1053 | // ======================================================================= |
| 1054 | const Handle(OpenGl_Resource)& OpenGl_Context::GetResource (const TCollection_AsciiString& theKey) const |
| 1055 | { |
| 1056 | return mySharedResources->IsBound (theKey) ? mySharedResources->Find (theKey) : NULL_GL_RESOURCE; |
| 1057 | } |
| 1058 | |
| 1059 | // ======================================================================= |
| 1060 | // function : ShareResource |
| 1061 | // purpose : |
| 1062 | // ======================================================================= |
| 1063 | Standard_Boolean OpenGl_Context::ShareResource (const TCollection_AsciiString& theKey, |
| 1064 | const Handle(OpenGl_Resource)& theResource) |
| 1065 | { |
| 1066 | if (theKey.IsEmpty() || theResource.IsNull()) |
| 1067 | { |
| 1068 | return Standard_False; |
| 1069 | } |
| 1070 | return mySharedResources->Bind (theKey, theResource); |
| 1071 | } |
| 1072 | |
| 1073 | // ======================================================================= |
| 1074 | // function : ReleaseResource |
| 1075 | // purpose : |
| 1076 | // ======================================================================= |
| 1077 | void OpenGl_Context::ReleaseResource (const TCollection_AsciiString& theKey, |
| 1078 | const Standard_Boolean theToDelay) |
| 1079 | { |
| 1080 | if (!mySharedResources->IsBound (theKey)) |
| 1081 | { |
| 1082 | return; |
| 1083 | } |
| 1084 | const Handle(OpenGl_Resource)& aRes = mySharedResources->Find (theKey); |
| 1085 | if (aRes->GetRefCount() > 1) |
| 1086 | { |
| 1087 | return; |
| 1088 | } |
| 1089 | |
| 1090 | if (theToDelay) |
| 1091 | { |
| 1092 | myDelayed->Bind (theKey, 1); |
| 1093 | } |
| 1094 | else |
| 1095 | { |
| 1096 | aRes->Release (this); |
| 1097 | mySharedResources->UnBind (theKey); |
| 1098 | } |
| 1099 | } |
| 1100 | |
| 1101 | // ======================================================================= |
| 1102 | // function : DelayedRelease |
| 1103 | // purpose : |
| 1104 | // ======================================================================= |
| 1105 | void OpenGl_Context::DelayedRelease (Handle(OpenGl_Resource)& theResource) |
| 1106 | { |
| 1107 | myReleaseQueue->Push (theResource); |
| 1108 | theResource.Nullify(); |
| 1109 | } |
| 1110 | |
| 1111 | // ======================================================================= |
| 1112 | // function : ReleaseDelayed |
| 1113 | // purpose : |
| 1114 | // ======================================================================= |
| 1115 | void OpenGl_Context::ReleaseDelayed() |
| 1116 | { |
| 1117 | // release queued elements |
| 1118 | while (!myReleaseQueue->IsEmpty()) |
| 1119 | { |
| 1120 | myReleaseQueue->Front()->Release (this); |
| 1121 | myReleaseQueue->Pop(); |
| 1122 | } |
| 1123 | |
| 1124 | // release delayed shared resoruces |
| 1125 | NCollection_Vector<TCollection_AsciiString> aDeadList; |
| 1126 | for (NCollection_DataMap<TCollection_AsciiString, Standard_Integer>::Iterator anIter (*myDelayed); |
| 1127 | anIter.More(); anIter.Next()) |
| 1128 | { |
| 1129 | if (++anIter.ChangeValue() <= 2) |
| 1130 | { |
| 1131 | continue; // postpone release one more frame to ensure noone use it periodically |
| 1132 | } |
| 1133 | |
| 1134 | const TCollection_AsciiString& aKey = anIter.Key(); |
| 1135 | if (!mySharedResources->IsBound (aKey)) |
| 1136 | { |
| 1137 | // mixed unshared strategy delayed/undelayed was used! |
| 1138 | aDeadList.Append (aKey); |
| 1139 | continue; |
| 1140 | } |
| 1141 | |
| 1142 | Handle(OpenGl_Resource)& aRes = mySharedResources->ChangeFind (aKey); |
| 1143 | if (aRes->GetRefCount() > 1) |
| 1144 | { |
| 1145 | // should be only 1 instance in mySharedResources |
| 1146 | // if not - resource was reused again |
| 1147 | aDeadList.Append (aKey); |
| 1148 | continue; |
| 1149 | } |
| 1150 | |
| 1151 | // release resource if no one requiested it more than 2 redraw calls |
| 1152 | aRes->Release (this); |
| 1153 | mySharedResources->UnBind (aKey); |
| 1154 | aDeadList.Append (aKey); |
| 1155 | } |
| 1156 | |
| 1157 | for (Standard_Integer anIter = 0; anIter < aDeadList.Length(); ++anIter) |
| 1158 | { |
| 1159 | myDelayed->UnBind (aDeadList.Value (anIter)); |
| 1160 | } |
| 1161 | } |