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6aca4d39 | 1 | // Created on: 2012-01-26 |
b311480e | 2 | // Created by: Kirill GAVRILOV |
6aca4d39 | 3 | // Copyright (c) 2012-2014 OPEN CASCADE SAS |
b311480e | 4 | // |
973c2be1 | 5 | // This file is part of Open CASCADE Technology software library. |
b311480e | 6 | // |
d5f74e42 | 7 | // This library is free software; you can redistribute it and/or modify it under |
8 | // the terms of the GNU Lesser General Public License version 2.1 as published | |
973c2be1 | 9 | // by the Free Software Foundation, with special exception defined in the file |
10 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT | |
11 | // distribution for complete text of the license and disclaimer of any warranty. | |
b311480e | 12 | // |
973c2be1 | 13 | // Alternatively, this file may be used under the terms of Open CASCADE |
14 | // commercial license or contractual agreement. | |
b311480e | 15 | |
58655684 | 16 | #if defined(_WIN32) |
5f8b738e | 17 | #include <windows.h> |
18 | #endif | |
19 | ||
2166f0fa SK |
20 | #include <OpenGl_Context.hxx> |
21 | ||
5f8b738e | 22 | #include <OpenGl_ArbVBO.hxx> |
5e27df78 | 23 | #include <OpenGl_ArbTBO.hxx> |
24 | #include <OpenGl_ArbIns.hxx> | |
58655684 | 25 | #include <OpenGl_ArbDbg.hxx> |
5f8b738e | 26 | #include <OpenGl_ExtFBO.hxx> |
37eb4787 | 27 | #include <OpenGl_ExtGS.hxx> |
5f8b738e | 28 | #include <OpenGl_GlCore20.hxx> |
30f0ad28 | 29 | #include <OpenGl_ShaderManager.hxx> |
5f8b738e | 30 | |
cbf18624 | 31 | #include <Message_Messenger.hxx> |
30f0ad28 | 32 | |
a174a3c5 | 33 | #include <NCollection_Vector.hxx> |
34 | ||
2bd4c032 | 35 | #include <Standard_ProgramError.hxx> |
36 | ||
58655684 | 37 | #if defined(_WIN32) |
5f8b738e | 38 | // |
39 | #elif defined(__APPLE__) && !defined(MACOSX_USE_GLX) | |
40 | #include <dlfcn.h> | |
41 | #else | |
42 | #include <GL/glx.h> // glXGetProcAddress() | |
43 | #endif | |
44 | ||
f0430952 | 45 | // GL_NVX_gpu_memory_info |
46 | #ifndef GL_GPU_MEMORY_INFO_DEDICATED_VIDMEM_NVX | |
47 | enum | |
48 | { | |
49 | GL_GPU_MEMORY_INFO_DEDICATED_VIDMEM_NVX = 0x9047, | |
50 | GL_GPU_MEMORY_INFO_TOTAL_AVAILABLE_MEMORY_NVX = 0x9048, | |
51 | GL_GPU_MEMORY_INFO_CURRENT_AVAILABLE_VIDMEM_NVX = 0x9049, | |
52 | GL_GPU_MEMORY_INFO_EVICTION_COUNT_NVX = 0x904A, | |
53 | GL_GPU_MEMORY_INFO_EVICTED_MEMORY_NVX = 0x904B | |
54 | }; | |
55 | #endif | |
56 | ||
2166f0fa SK |
57 | IMPLEMENT_STANDARD_HANDLE (OpenGl_Context, Standard_Transient) |
58 | IMPLEMENT_STANDARD_RTTIEXT(OpenGl_Context, Standard_Transient) | |
59 | ||
5f8b738e | 60 | //! Make record shorter to retrieve function pointer using variable with same name |
61 | #define FindProcShort(theStruct, theFunc) FindProc(#theFunc, theStruct->theFunc) | |
2166f0fa | 62 | |
5e27df78 | 63 | namespace |
64 | { | |
65 | static const Handle(OpenGl_Resource) NULL_GL_RESOURCE; | |
4269bd1b | 66 | static const GLdouble OpenGl_DefaultPlaneEq[] = {0.0, 0.0, 0.0, 0.0}; |
5e27df78 | 67 | }; |
68 | ||
2166f0fa SK |
69 | // ======================================================================= |
70 | // function : OpenGl_Context | |
71 | // purpose : | |
72 | // ======================================================================= | |
58655684 | 73 | OpenGl_Context::OpenGl_Context (const Handle(OpenGl_Caps)& theCaps) |
5f8b738e | 74 | : core12 (NULL), |
75 | core13 (NULL), | |
76 | core14 (NULL), | |
77 | core15 (NULL), | |
78 | core20 (NULL), | |
58655684 | 79 | caps (!theCaps.IsNull() ? theCaps : new OpenGl_Caps()), |
bf75be98 | 80 | arbNPTW(Standard_False), |
5f8b738e | 81 | arbVBO (NULL), |
5e27df78 | 82 | arbTBO (NULL), |
83 | arbIns (NULL), | |
58655684 | 84 | arbDbg (NULL), |
5f8b738e | 85 | extFBO (NULL), |
37eb4787 | 86 | extGS (NULL), |
bf75be98 | 87 | extBgra(Standard_False), |
88 | extAnis(Standard_False), | |
30f0ad28 | 89 | extPDS (Standard_False), |
f0430952 | 90 | atiMem (Standard_False), |
91 | nvxMem (Standard_False), | |
5e27df78 | 92 | mySharedResources (new OpenGl_ResourcesMap()), |
a174a3c5 | 93 | myDelayed (new OpenGl_DelayReleaseMap()), |
94 | myReleaseQueue (new OpenGl_ResourcesQueue()), | |
4269bd1b | 95 | myClippingState (), |
5f8b738e | 96 | myGlLibHandle (NULL), |
97 | myGlCore20 (NULL), | |
2f6cb3ac | 98 | myAnisoMax (1), |
eafb234b | 99 | myMaxTexDim (1024), |
4269bd1b | 100 | myMaxClipPlanes (6), |
5f8b738e | 101 | myGlVerMajor (0), |
102 | myGlVerMinor (0), | |
b5ac8292 | 103 | myRenderMode (GL_RENDER), |
104 | myIsInitialized (Standard_False), | |
105 | myIsStereoBuffers (Standard_False), | |
106 | myDrawBuffer (0) | |
2166f0fa | 107 | { |
5f8b738e | 108 | #if defined(MAC_OS_X_VERSION_10_3) && !defined(MACOSX_USE_GLX) |
109 | // Vendors can not extend functionality on this system | |
110 | // and developers are limited to OpenGL support provided by Mac OS X SDK. | |
111 | // We retrieve function pointers from system library | |
112 | // to generalize extensions support on all platforms. | |
113 | // In this way we also reach binary compatibility benefit between OS releases | |
114 | // if some newest functionality is optionally used. | |
115 | // Notice that GL version / extension availability checks are required | |
116 | // because function pointers may be available but not functionality itself | |
117 | // (depends on renderer). | |
118 | myGlLibHandle = dlopen ("/System/Library/Frameworks/OpenGL.framework/Versions/Current/OpenGL", RTLD_LAZY); | |
119 | #endif | |
30f0ad28 | 120 | |
121 | myShaderManager = new OpenGl_ShaderManager (this); | |
2166f0fa SK |
122 | } |
123 | ||
124 | // ======================================================================= | |
125 | // function : ~OpenGl_Context | |
126 | // purpose : | |
127 | // ======================================================================= | |
128 | OpenGl_Context::~OpenGl_Context() | |
129 | { | |
5e27df78 | 130 | // release clean up queue |
131 | ReleaseDelayed(); | |
132 | ||
133 | // release shared resources if any | |
134 | if (((const Handle(Standard_Transient)& )mySharedResources)->GetRefCount() <= 1) | |
135 | { | |
392ac980 | 136 | myShaderManager.Nullify(); |
5e27df78 | 137 | for (NCollection_DataMap<TCollection_AsciiString, Handle(OpenGl_Resource)>::Iterator anIter (*mySharedResources); |
138 | anIter.More(); anIter.Next()) | |
139 | { | |
140 | anIter.Value()->Release (this); | |
141 | } | |
142 | } | |
392ac980 | 143 | else |
144 | { | |
145 | myShaderManager->SetContext (NULL); | |
146 | } | |
5e27df78 | 147 | mySharedResources.Nullify(); |
a174a3c5 | 148 | myDelayed.Nullify(); |
5e27df78 | 149 | |
cbf18624 | 150 | if (arbDbg != NULL |
151 | && caps->contextDebug) | |
152 | { | |
153 | // reset callback | |
154 | void* aPtr = NULL; | |
155 | glGetPointerv (GL_DEBUG_CALLBACK_USER_PARAM_ARB, &aPtr); | |
156 | if (aPtr == this) | |
157 | { | |
158 | arbDbg->glDebugMessageCallbackARB (NULL, NULL); | |
159 | } | |
160 | } | |
161 | ||
5f8b738e | 162 | delete myGlCore20; |
163 | delete arbVBO; | |
58655684 | 164 | delete arbTBO; |
165 | delete arbIns; | |
166 | delete arbDbg; | |
5f8b738e | 167 | delete extFBO; |
37eb4787 | 168 | delete extGS; |
5f8b738e | 169 | } |
170 | ||
bf75be98 | 171 | // ======================================================================= |
172 | // function : MaxDegreeOfAnisotropy | |
173 | // purpose : | |
174 | // ======================================================================= | |
175 | Standard_Integer OpenGl_Context::MaxDegreeOfAnisotropy() const | |
176 | { | |
177 | return myAnisoMax; | |
178 | } | |
179 | ||
180 | // ======================================================================= | |
181 | // function : MaxTextureSize | |
182 | // purpose : | |
183 | // ======================================================================= | |
184 | Standard_Integer OpenGl_Context::MaxTextureSize() const | |
185 | { | |
186 | return myMaxTexDim; | |
187 | } | |
188 | ||
4269bd1b | 189 | // ======================================================================= |
190 | // function : MaxClipPlanes | |
191 | // purpose : | |
192 | // ======================================================================= | |
193 | Standard_Integer OpenGl_Context::MaxClipPlanes() const | |
194 | { | |
195 | return myMaxClipPlanes; | |
196 | } | |
197 | ||
b5ac8292 | 198 | // ======================================================================= |
199 | // function : SetDrawBufferLeft | |
200 | // purpose : | |
201 | // ======================================================================= | |
202 | void OpenGl_Context::SetDrawBufferLeft() | |
203 | { | |
204 | switch (myDrawBuffer) | |
205 | { | |
206 | case GL_BACK_RIGHT : | |
207 | case GL_BACK : | |
208 | glDrawBuffer (GL_BACK_LEFT); | |
209 | myDrawBuffer = GL_BACK_LEFT; | |
210 | break; | |
211 | ||
212 | case GL_FRONT_RIGHT : | |
213 | case GL_FRONT : | |
214 | glDrawBuffer (GL_FRONT_LEFT); | |
215 | myDrawBuffer = GL_FRONT_LEFT; | |
216 | break; | |
217 | ||
218 | case GL_FRONT_AND_BACK : | |
219 | case GL_RIGHT : | |
220 | glDrawBuffer (GL_LEFT); | |
221 | myDrawBuffer = GL_LEFT; | |
222 | break; | |
223 | } | |
224 | } | |
225 | ||
226 | // ======================================================================= | |
227 | // function : SetDrawBufferRight | |
228 | // purpose : | |
229 | // ======================================================================= | |
230 | void OpenGl_Context::SetDrawBufferRight() | |
231 | { | |
232 | switch (myDrawBuffer) | |
233 | { | |
234 | case GL_BACK_LEFT : | |
235 | case GL_BACK : | |
236 | glDrawBuffer (GL_BACK_RIGHT); | |
237 | myDrawBuffer = GL_BACK_RIGHT; | |
238 | break; | |
239 | ||
240 | case GL_FRONT_LEFT : | |
241 | case GL_FRONT : | |
242 | glDrawBuffer (GL_FRONT_RIGHT); | |
243 | myDrawBuffer = GL_FRONT_RIGHT; | |
244 | break; | |
245 | ||
246 | case GL_FRONT_AND_BACK : | |
247 | case GL_LEFT : | |
248 | glDrawBuffer (GL_RIGHT); | |
249 | myDrawBuffer = GL_RIGHT; | |
250 | break; | |
251 | } | |
252 | } | |
253 | ||
254 | // ======================================================================= | |
255 | // function : SetDrawBufferMono | |
256 | // purpose : | |
257 | // ======================================================================= | |
258 | void OpenGl_Context::SetDrawBufferMono() | |
259 | { | |
260 | switch (myDrawBuffer) | |
261 | { | |
262 | case GL_BACK_LEFT : | |
263 | case GL_BACK_RIGHT : | |
264 | glDrawBuffer (GL_BACK); | |
265 | myDrawBuffer = GL_BACK; | |
266 | break; | |
267 | ||
268 | case GL_FRONT_LEFT : | |
269 | case GL_FRONT_RIGHT : | |
270 | glDrawBuffer (GL_FRONT); | |
271 | myDrawBuffer = GL_FRONT; | |
272 | break; | |
273 | ||
274 | case GL_LEFT : | |
275 | case GL_RIGHT : | |
276 | glDrawBuffer (GL_FRONT_AND_BACK); | |
277 | myDrawBuffer = GL_FRONT_AND_BACK; | |
278 | break; | |
279 | } | |
280 | } | |
281 | ||
282 | // ======================================================================= | |
283 | // function : FetchState | |
284 | // purpose : | |
285 | // ======================================================================= | |
286 | void OpenGl_Context::FetchState() | |
287 | { | |
288 | // cache feedback mode state | |
289 | glGetIntegerv (GL_RENDER_MODE, &myRenderMode); | |
290 | ||
291 | // cache draw buffer state | |
292 | glGetIntegerv (GL_DRAW_BUFFER, &myDrawBuffer); | |
293 | } | |
294 | ||
5e27df78 | 295 | // ======================================================================= |
296 | // function : Share | |
297 | // purpose : | |
298 | // ======================================================================= | |
299 | void OpenGl_Context::Share (const Handle(OpenGl_Context)& theShareCtx) | |
300 | { | |
301 | if (!theShareCtx.IsNull()) | |
302 | { | |
303 | mySharedResources = theShareCtx->mySharedResources; | |
a174a3c5 | 304 | myDelayed = theShareCtx->myDelayed; |
5e27df78 | 305 | myReleaseQueue = theShareCtx->myReleaseQueue; |
392ac980 | 306 | myShaderManager = theShareCtx->myShaderManager; |
5e27df78 | 307 | } |
308 | } | |
309 | ||
4fe56619 | 310 | #if !defined(__APPLE__) || defined(MACOSX_USE_GLX) |
311 | ||
86fa64d9 | 312 | // ======================================================================= |
313 | // function : IsCurrent | |
314 | // purpose : | |
315 | // ======================================================================= | |
316 | Standard_Boolean OpenGl_Context::IsCurrent() const | |
317 | { | |
58655684 | 318 | #if defined(_WIN32) |
86fa64d9 | 319 | if (myWindowDC == NULL || myGContext == NULL) |
320 | { | |
321 | return Standard_False; | |
322 | } | |
323 | return (( (HDC )myWindowDC == wglGetCurrentDC()) | |
324 | && ((HGLRC )myGContext == wglGetCurrentContext())); | |
325 | #else | |
326 | if (myDisplay == NULL || myWindow == 0 || myGContext == 0) | |
327 | { | |
328 | return Standard_False; | |
329 | } | |
330 | ||
331 | return ( ((Display* )myDisplay == glXGetCurrentDisplay()) | |
332 | && ((GLXContext )myGContext == glXGetCurrentContext()) | |
333 | && ((GLXDrawable )myWindow == glXGetCurrentDrawable())); | |
334 | #endif | |
335 | } | |
336 | ||
2bd4c032 | 337 | // ======================================================================= |
338 | // function : MakeCurrent | |
339 | // purpose : | |
340 | // ======================================================================= | |
341 | Standard_Boolean OpenGl_Context::MakeCurrent() | |
342 | { | |
58655684 | 343 | #if defined(_WIN32) |
86fa64d9 | 344 | if (myWindowDC == NULL || myGContext == NULL) |
2bd4c032 | 345 | { |
86fa64d9 | 346 | Standard_ProgramError_Raise_if (myIsInitialized, "OpenGl_Context::Init() should be called before!"); |
347 | return Standard_False; | |
348 | } | |
349 | ||
350 | // technically it should be safe to activate already bound GL context | |
351 | // however some drivers (Intel etc.) may FAIL doing this for unknown reason | |
352 | if (IsCurrent()) | |
353 | { | |
392ac980 | 354 | myShaderManager->SetContext (this); |
86fa64d9 | 355 | return Standard_True; |
356 | } | |
357 | else if (wglMakeCurrent ((HDC )myWindowDC, (HGLRC )myGContext) != TRUE) | |
358 | { | |
359 | // notice that glGetError() couldn't be used here! | |
360 | wchar_t* aMsgBuff = NULL; | |
361 | DWORD anErrorCode = GetLastError(); | |
362 | FormatMessageW (FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, | |
363 | NULL, anErrorCode, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (wchar_t* )&aMsgBuff, 0, NULL); | |
cbf18624 | 364 | TCollection_ExtendedString aMsg ("wglMakeCurrent() has failed. "); |
86fa64d9 | 365 | if (aMsgBuff != NULL) |
366 | { | |
cbf18624 | 367 | aMsg += (Standard_ExtString )aMsgBuff; |
86fa64d9 | 368 | LocalFree (aMsgBuff); |
369 | } | |
cbf18624 | 370 | PushMessage (GL_DEBUG_SOURCE_WINDOW_SYSTEM_ARB, GL_DEBUG_TYPE_ERROR_ARB, (unsigned int )anErrorCode, GL_DEBUG_SEVERITY_HIGH_ARB, aMsg); |
fd4a6963 | 371 | myIsInitialized = Standard_False; |
2bd4c032 | 372 | return Standard_False; |
373 | } | |
374 | #else | |
86fa64d9 | 375 | if (myDisplay == NULL || myWindow == 0 || myGContext == 0) |
376 | { | |
377 | Standard_ProgramError_Raise_if (myIsInitialized, "OpenGl_Context::Init() should be called before!"); | |
378 | return Standard_False; | |
379 | } | |
380 | ||
381 | if (!glXMakeCurrent ((Display* )myDisplay, (GLXDrawable )myWindow, (GLXContext )myGContext)) | |
2bd4c032 | 382 | { |
383 | // if there is no current context it might be impossible to use glGetError() correctly | |
cbf18624 | 384 | PushMessage (GL_DEBUG_SOURCE_WINDOW_SYSTEM_ARB, GL_DEBUG_TYPE_ERROR_ARB, 0, GL_DEBUG_SEVERITY_HIGH_ARB, |
385 | "glXMakeCurrent() has failed!"); | |
fd4a6963 | 386 | myIsInitialized = Standard_False; |
2bd4c032 | 387 | return Standard_False; |
388 | } | |
389 | #endif | |
392ac980 | 390 | myShaderManager->SetContext (this); |
2bd4c032 | 391 | return Standard_True; |
392 | } | |
393 | ||
5e27df78 | 394 | // ======================================================================= |
395 | // function : SwapBuffers | |
396 | // purpose : | |
397 | // ======================================================================= | |
398 | void OpenGl_Context::SwapBuffers() | |
399 | { | |
58655684 | 400 | #if defined(_WIN32) |
5e27df78 | 401 | if ((HDC )myWindowDC != NULL) |
402 | { | |
403 | ::SwapBuffers ((HDC )myWindowDC); | |
404 | glFlush(); | |
405 | } | |
406 | #else | |
407 | if ((Display* )myDisplay != NULL) | |
408 | { | |
409 | glXSwapBuffers ((Display* )myDisplay, (GLXDrawable )myWindow); | |
410 | } | |
411 | #endif | |
412 | } | |
413 | ||
4fe56619 | 414 | #endif // __APPLE__ |
415 | ||
5f8b738e | 416 | // ======================================================================= |
417 | // function : findProc | |
418 | // purpose : | |
419 | // ======================================================================= | |
420 | void* OpenGl_Context::findProc (const char* theFuncName) | |
421 | { | |
58655684 | 422 | #if defined(_WIN32) |
5f8b738e | 423 | return wglGetProcAddress (theFuncName); |
424 | #elif defined(__APPLE__) && !defined(MACOSX_USE_GLX) | |
425 | return (myGlLibHandle != NULL) ? dlsym (myGlLibHandle, theFuncName) : NULL; | |
426 | #else | |
427 | return (void* )glXGetProcAddress ((const GLubyte* )theFuncName); | |
428 | #endif | |
2166f0fa SK |
429 | } |
430 | ||
431 | // ======================================================================= | |
432 | // function : CheckExtension | |
433 | // purpose : | |
434 | // ======================================================================= | |
2bd4c032 | 435 | Standard_Boolean OpenGl_Context::CheckExtension (const char* theExtName) const |
2166f0fa | 436 | { |
5f8b738e | 437 | if (theExtName == NULL) |
438 | { | |
439 | std::cerr << "CheckExtension called with NULL string!\n"; | |
440 | return Standard_False; | |
441 | } | |
5f8b738e | 442 | |
443 | // available since OpenGL 3.0 | |
444 | // and the ONLY way to check extensions with OpenGL 3.1+ core profile | |
2bd4c032 | 445 | /**if (IsGlGreaterEqual (3, 0)) |
5f8b738e | 446 | { |
447 | GLint anExtNb = 0; | |
448 | glGetIntegerv (GL_NUM_EXTENSIONS, &anExtNb); | |
449 | for (GLint anIter = 0; anIter < anExtNb; ++anIter) | |
450 | { | |
451 | const char* anExtension = (const char* )core30->glGetStringi (GL_EXTENSIONS, (GLuint )anIter); | |
452 | if (anExtension[anExtNameLen] == '\0' && | |
453 | strncmp (anExtension, theExtName, anExtNameLen) == 0) | |
454 | { | |
455 | return Standard_True; | |
456 | } | |
457 | } | |
458 | return Standard_False; | |
459 | }*/ | |
460 | ||
461 | // use old way with huge string for all extensions | |
462 | const char* anExtString = (const char* )glGetString (GL_EXTENSIONS); | |
463 | if (anExtString == NULL) | |
464 | { | |
7e7c2f0b | 465 | Messenger()->Send ("TKOpenGL: glGetString (GL_EXTENSIONS) has returned NULL! No GL context?", Message_Warning); |
2166f0fa SK |
466 | return Standard_False; |
467 | } | |
58655684 | 468 | return CheckExtension (anExtString, theExtName); |
469 | } | |
470 | ||
471 | // ======================================================================= | |
472 | // function : CheckExtension | |
473 | // purpose : | |
474 | // ======================================================================= | |
475 | Standard_Boolean OpenGl_Context::CheckExtension (const char* theExtString, | |
476 | const char* theExtName) | |
477 | { | |
478 | if (theExtString == NULL) | |
479 | { | |
480 | return Standard_False; | |
481 | } | |
2166f0fa SK |
482 | |
483 | // Search for theExtName in the extensions string. | |
484 | // Use of strstr() is not sufficient because extension names can be prefixes of other extension names. | |
58655684 | 485 | char* aPtrIter = (char* )theExtString; |
486 | const char* aPtrEnd = aPtrIter + strlen (theExtString); | |
487 | const size_t anExtNameLen = strlen (theExtName); | |
2166f0fa SK |
488 | while (aPtrIter < aPtrEnd) |
489 | { | |
6a7d83c4 | 490 | const size_t n = strcspn (aPtrIter, " "); |
5f8b738e | 491 | if ((n == anExtNameLen) && (strncmp (aPtrIter, theExtName, anExtNameLen) == 0)) |
492 | { | |
2166f0fa | 493 | return Standard_True; |
5f8b738e | 494 | } |
2166f0fa SK |
495 | aPtrIter += (n + 1); |
496 | } | |
497 | return Standard_False; | |
498 | } | |
499 | ||
4fe56619 | 500 | #if !defined(__APPLE__) || defined(MACOSX_USE_GLX) |
501 | ||
2166f0fa SK |
502 | // ======================================================================= |
503 | // function : Init | |
504 | // purpose : | |
505 | // ======================================================================= | |
f0430952 | 506 | Standard_Boolean OpenGl_Context::Init() |
2166f0fa | 507 | { |
2bd4c032 | 508 | if (myIsInitialized) |
5f8b738e | 509 | { |
f0430952 | 510 | return Standard_True; |
5f8b738e | 511 | } |
2bd4c032 | 512 | |
58655684 | 513 | #if defined(_WIN32) |
2bd4c032 | 514 | myWindowDC = (Aspect_Handle )wglGetCurrentDC(); |
515 | myGContext = (Aspect_RenderingContext )wglGetCurrentContext(); | |
516 | #else | |
517 | myDisplay = (Aspect_Display )glXGetCurrentDisplay(); | |
518 | myGContext = (Aspect_RenderingContext )glXGetCurrentContext(); | |
519 | myWindow = (Aspect_Drawable )glXGetCurrentDrawable(); | |
520 | #endif | |
f0430952 | 521 | if (myGContext == NULL) |
522 | { | |
523 | return Standard_False; | |
524 | } | |
2bd4c032 | 525 | |
526 | init(); | |
527 | myIsInitialized = Standard_True; | |
f0430952 | 528 | return Standard_True; |
2bd4c032 | 529 | } |
530 | ||
4fe56619 | 531 | #endif // __APPLE__ |
532 | ||
2bd4c032 | 533 | // ======================================================================= |
534 | // function : Init | |
535 | // purpose : | |
536 | // ======================================================================= | |
58655684 | 537 | #if defined(_WIN32) |
f0430952 | 538 | Standard_Boolean OpenGl_Context::Init (const Aspect_Handle theWindow, |
539 | const Aspect_Handle theWindowDC, | |
540 | const Aspect_RenderingContext theGContext) | |
4fe56619 | 541 | #elif defined(__APPLE__) && !defined(MACOSX_USE_GLX) |
542 | Standard_Boolean OpenGl_Context::Init (const void* theGContext) | |
2bd4c032 | 543 | #else |
f0430952 | 544 | Standard_Boolean OpenGl_Context::Init (const Aspect_Drawable theWindow, |
545 | const Aspect_Display theDisplay, | |
546 | const Aspect_RenderingContext theGContext) | |
2bd4c032 | 547 | #endif |
548 | { | |
549 | Standard_ProgramError_Raise_if (myIsInitialized, "OpenGl_Context::Init() should be called only once!"); | |
58655684 | 550 | #if defined(_WIN32) |
2bd4c032 | 551 | myWindow = theWindow; |
552 | myGContext = theGContext; | |
2bd4c032 | 553 | myWindowDC = theWindowDC; |
4fe56619 | 554 | #elif defined(__APPLE__) && !defined(MACOSX_USE_GLX) |
555 | myGContext = (void* )theGContext; | |
2bd4c032 | 556 | #else |
4fe56619 | 557 | myWindow = theWindow; |
558 | myGContext = theGContext; | |
2bd4c032 | 559 | myDisplay = theDisplay; |
560 | #endif | |
86fa64d9 | 561 | if (myGContext == NULL || !MakeCurrent()) |
f0430952 | 562 | { |
563 | return Standard_False; | |
564 | } | |
2bd4c032 | 565 | |
566 | init(); | |
567 | myIsInitialized = Standard_True; | |
f0430952 | 568 | return Standard_True; |
5f8b738e | 569 | } |
570 | ||
571 | // ======================================================================= | |
572 | // function : ResetErrors | |
573 | // purpose : | |
574 | // ======================================================================= | |
575 | void OpenGl_Context::ResetErrors() | |
576 | { | |
577 | while (glGetError() != GL_NO_ERROR) | |
578 | { | |
579 | // | |
580 | } | |
581 | } | |
582 | ||
583 | // ======================================================================= | |
584 | // function : readGlVersion | |
585 | // purpose : | |
586 | // ======================================================================= | |
587 | void OpenGl_Context::readGlVersion() | |
588 | { | |
589 | // reset values | |
590 | myGlVerMajor = 0; | |
591 | myGlVerMinor = 0; | |
592 | ||
593 | // available since OpenGL 3.0 | |
86325709 | 594 | GLint aMajor = 0, aMinor = 0; |
5f8b738e | 595 | glGetIntegerv (GL_MAJOR_VERSION, &aMajor); |
596 | glGetIntegerv (GL_MINOR_VERSION, &aMinor); | |
30f0ad28 | 597 | // glGetError() sometimes does not report an error here even if |
86325709 | 598 | // GL does not know GL_MAJOR_VERSION and GL_MINOR_VERSION constants. |
599 | // This happens on some rendereres like e.g. Cygwin MESA. | |
600 | // Thus checking additionally if GL has put anything to | |
601 | // the output variables. | |
602 | if (glGetError() == GL_NO_ERROR && aMajor != 0 && aMinor != 0) | |
5f8b738e | 603 | { |
604 | myGlVerMajor = aMajor; | |
605 | myGlVerMinor = aMinor; | |
606 | return; | |
607 | } | |
608 | ResetErrors(); | |
609 | ||
610 | // Read version string. | |
611 | // Notice that only first two numbers splitted by point '2.1 XXXXX' are significant. | |
612 | // Following trash (after space) is vendor-specific. | |
613 | // New drivers also returns micro version of GL like '3.3.0' which has no meaning | |
614 | // and should be considered as vendor-specific too. | |
615 | const char* aVerStr = (const char* )glGetString (GL_VERSION); | |
616 | if (aVerStr == NULL || *aVerStr == '\0') | |
617 | { | |
618 | // invalid GL context | |
619 | return; | |
620 | } | |
621 | ||
622 | // parse string for major number | |
623 | char aMajorStr[32]; | |
624 | char aMinorStr[32]; | |
625 | size_t aMajIter = 0; | |
626 | while (aVerStr[aMajIter] >= '0' && aVerStr[aMajIter] <= '9') | |
627 | { | |
628 | ++aMajIter; | |
629 | } | |
630 | if (aMajIter == 0 || aMajIter >= sizeof(aMajorStr)) | |
631 | { | |
632 | return; | |
633 | } | |
634 | memcpy (aMajorStr, aVerStr, aMajIter); | |
635 | aMajorStr[aMajIter] = '\0'; | |
636 | ||
637 | // parse string for minor number | |
86325709 | 638 | aVerStr += aMajIter + 1; |
639 | size_t aMinIter = 0; | |
5f8b738e | 640 | while (aVerStr[aMinIter] >= '0' && aVerStr[aMinIter] <= '9') |
641 | { | |
642 | ++aMinIter; | |
643 | } | |
86325709 | 644 | if (aMinIter == 0 || aMinIter >= sizeof(aMinorStr)) |
5f8b738e | 645 | { |
646 | return; | |
647 | } | |
86325709 | 648 | memcpy (aMinorStr, aVerStr, aMinIter); |
649 | aMinorStr[aMinIter] = '\0'; | |
5f8b738e | 650 | |
651 | // read numbers | |
652 | myGlVerMajor = atoi (aMajorStr); | |
653 | myGlVerMinor = atoi (aMinorStr); | |
654 | ||
655 | if (myGlVerMajor <= 0) | |
656 | { | |
657 | myGlVerMajor = 0; | |
658 | myGlVerMinor = 0; | |
659 | } | |
660 | } | |
661 | ||
58655684 | 662 | static Standard_CString THE_DBGMSG_UNKNOWN = "UNKNOWN"; |
663 | static Standard_CString THE_DBGMSG_SOURCES[] = | |
664 | { | |
cbf18624 | 665 | ".OpenGL", // GL_DEBUG_SOURCE_API_ARB |
666 | ".WinSystem", // GL_DEBUG_SOURCE_WINDOW_SYSTEM_ARB | |
667 | ".GLSL", // GL_DEBUG_SOURCE_SHADER_COMPILER_ARB | |
668 | ".3rdParty", // GL_DEBUG_SOURCE_THIRD_PARTY_ARB | |
669 | "", // GL_DEBUG_SOURCE_APPLICATION_ARB | |
670 | ".Other" // GL_DEBUG_SOURCE_OTHER_ARB | |
58655684 | 671 | }; |
672 | ||
673 | static Standard_CString THE_DBGMSG_TYPES[] = | |
674 | { | |
cbf18624 | 675 | "Error", // GL_DEBUG_TYPE_ERROR_ARB |
676 | "Deprecated", // GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR_ARB | |
677 | "Undef. behavior", // GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR_ARB | |
678 | "Portability", // GL_DEBUG_TYPE_PORTABILITY_ARB | |
679 | "Performance", // GL_DEBUG_TYPE_PERFORMANCE_ARB | |
680 | "Other" // GL_DEBUG_TYPE_OTHER_ARB | |
58655684 | 681 | }; |
682 | ||
683 | static Standard_CString THE_DBGMSG_SEV_HIGH = "High"; // GL_DEBUG_SEVERITY_HIGH_ARB | |
684 | static Standard_CString THE_DBGMSG_SEV_MEDIUM = "Medium"; // GL_DEBUG_SEVERITY_MEDIUM_ARB | |
685 | static Standard_CString THE_DBGMSG_SEV_LOW = "Low"; // GL_DEBUG_SEVERITY_LOW_ARB | |
686 | ||
cbf18624 | 687 | //! Callback for GL_ARB_debug_output extension |
58655684 | 688 | static void APIENTRY debugCallbackWrap(unsigned int theSource, |
689 | unsigned int theType, | |
690 | unsigned int theId, | |
691 | unsigned int theSeverity, | |
692 | int /*theLength*/, | |
693 | const char* theMessage, | |
9293178b | 694 | const void* theUserParam) |
cbf18624 | 695 | { |
696 | OpenGl_Context* aCtx = (OpenGl_Context* )theUserParam; | |
697 | aCtx->PushMessage (theSource, theType, theId, theSeverity, theMessage); | |
698 | } | |
699 | ||
700 | // ======================================================================= | |
701 | // function : PushMessage | |
702 | // purpose : | |
703 | // ======================================================================= | |
704 | void OpenGl_Context::PushMessage (const unsigned int theSource, | |
705 | const unsigned int theType, | |
706 | const unsigned int theId, | |
707 | const unsigned int theSeverity, | |
708 | const TCollection_ExtendedString& theMessage) | |
58655684 | 709 | { |
710 | //OpenGl_Context* aCtx = (OpenGl_Context* )theUserParam; | |
711 | Standard_CString& aSrc = (theSource >= GL_DEBUG_SOURCE_API_ARB | |
712 | && theSource <= GL_DEBUG_SOURCE_OTHER_ARB) | |
713 | ? THE_DBGMSG_SOURCES[theSource - GL_DEBUG_SOURCE_API_ARB] | |
714 | : THE_DBGMSG_UNKNOWN; | |
715 | Standard_CString& aType = (theType >= GL_DEBUG_TYPE_ERROR_ARB | |
716 | && theType <= GL_DEBUG_TYPE_OTHER_ARB) | |
717 | ? THE_DBGMSG_TYPES[theType - GL_DEBUG_TYPE_ERROR_ARB] | |
718 | : THE_DBGMSG_UNKNOWN; | |
719 | Standard_CString& aSev = theSeverity == GL_DEBUG_SEVERITY_HIGH_ARB | |
720 | ? THE_DBGMSG_SEV_HIGH | |
721 | : (theSeverity == GL_DEBUG_SEVERITY_MEDIUM_ARB | |
722 | ? THE_DBGMSG_SEV_MEDIUM | |
723 | : THE_DBGMSG_SEV_LOW); | |
cbf18624 | 724 | Message_Gravity aGrav = theSeverity == GL_DEBUG_SEVERITY_HIGH_ARB |
725 | ? Message_Alarm | |
726 | : (theSeverity == GL_DEBUG_SEVERITY_MEDIUM_ARB | |
727 | ? Message_Warning | |
728 | : Message_Info); | |
729 | ||
730 | TCollection_ExtendedString aMsg; | |
731 | aMsg += "TKOpenGl"; aMsg += aSrc; | |
732 | aMsg += " | Type: "; aMsg += aType; | |
733 | aMsg += " | ID: "; aMsg += (Standard_Integer )theId; | |
734 | aMsg += " | Severity: "; aMsg += aSev; | |
735 | aMsg += " | Message:\n "; | |
736 | aMsg += theMessage; | |
737 | ||
7e7c2f0b | 738 | Messenger()->Send (aMsg, aGrav); |
58655684 | 739 | } |
740 | ||
5f8b738e | 741 | // ======================================================================= |
742 | // function : init | |
743 | // purpose : | |
744 | // ======================================================================= | |
745 | void OpenGl_Context::init() | |
746 | { | |
747 | // read version | |
748 | readGlVersion(); | |
749 | ||
bf75be98 | 750 | arbNPTW = CheckExtension ("GL_ARB_texture_non_power_of_two"); |
751 | extBgra = CheckExtension ("GL_EXT_bgra"); | |
752 | extAnis = CheckExtension ("GL_EXT_texture_filter_anisotropic"); | |
b859a34d | 753 | extPDS = CheckExtension ("GL_EXT_packed_depth_stencil"); |
bf75be98 | 754 | atiMem = CheckExtension ("GL_ATI_meminfo"); |
755 | nvxMem = CheckExtension ("GL_NVX_gpu_memory_info"); | |
756 | ||
4269bd1b | 757 | // get number of maximum clipping planes |
758 | glGetIntegerv (GL_MAX_CLIP_PLANES, &myMaxClipPlanes); | |
bf75be98 | 759 | glGetIntegerv (GL_MAX_TEXTURE_SIZE, &myMaxTexDim); |
b5ac8292 | 760 | |
761 | GLint aStereo; | |
762 | glGetIntegerv (GL_STEREO, &aStereo); | |
763 | myIsStereoBuffers = aStereo == 1; | |
764 | ||
bf75be98 | 765 | if (extAnis) |
766 | { | |
767 | glGetIntegerv (GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &myAnisoMax); | |
768 | } | |
f0430952 | 769 | |
4269bd1b | 770 | myClippingState.Init (myMaxClipPlanes); |
771 | ||
58655684 | 772 | // initialize debug context extension |
773 | if (CheckExtension ("GL_ARB_debug_output")) | |
774 | { | |
775 | arbDbg = new OpenGl_ArbDbg(); | |
776 | memset (arbDbg, 0, sizeof(OpenGl_ArbDbg)); // nullify whole structure | |
777 | if (!FindProcShort (arbDbg, glDebugMessageControlARB) | |
778 | || !FindProcShort (arbDbg, glDebugMessageInsertARB) | |
779 | || !FindProcShort (arbDbg, glDebugMessageCallbackARB) | |
780 | || !FindProcShort (arbDbg, glGetDebugMessageLogARB)) | |
781 | { | |
782 | delete arbDbg; | |
783 | arbDbg = NULL; | |
784 | } | |
785 | if (arbDbg != NULL | |
786 | && caps->contextDebug) | |
787 | { | |
788 | // setup default callback | |
789 | arbDbg->glDebugMessageCallbackARB (debugCallbackWrap, this); | |
fcdbe201 | 790 | #ifdef DEB |
58655684 | 791 | glEnable (GL_DEBUG_OUTPUT_SYNCHRONOUS_ARB); |
fcdbe201 | 792 | #endif |
58655684 | 793 | } |
794 | } | |
795 | ||
5f8b738e | 796 | // initialize VBO extension (ARB) |
797 | if (CheckExtension ("GL_ARB_vertex_buffer_object")) | |
2166f0fa SK |
798 | { |
799 | arbVBO = new OpenGl_ArbVBO(); | |
5f8b738e | 800 | memset (arbVBO, 0, sizeof(OpenGl_ArbVBO)); // nullify whole structure |
801 | if (!FindProcShort (arbVBO, glGenBuffersARB) | |
802 | || !FindProcShort (arbVBO, glBindBufferARB) | |
803 | || !FindProcShort (arbVBO, glBufferDataARB) | |
804 | || !FindProcShort (arbVBO, glDeleteBuffersARB)) | |
2166f0fa SK |
805 | { |
806 | delete arbVBO; | |
807 | arbVBO = NULL; | |
808 | } | |
809 | } | |
810 | ||
5e27df78 | 811 | // initialize TBO extension (ARB) |
812 | if (CheckExtension ("GL_ARB_texture_buffer_object")) | |
813 | { | |
814 | arbTBO = new OpenGl_ArbTBO(); | |
815 | memset (arbTBO, 0, sizeof(OpenGl_ArbTBO)); // nullify whole structure | |
816 | if (!FindProcShort (arbTBO, glTexBufferARB)) | |
817 | { | |
818 | delete arbTBO; | |
819 | arbTBO = NULL; | |
820 | } | |
821 | } | |
822 | ||
823 | // initialize hardware instancing extension (ARB) | |
824 | if (CheckExtension ("GL_ARB_draw_instanced")) | |
825 | { | |
826 | arbIns = new OpenGl_ArbIns(); | |
827 | memset (arbIns, 0, sizeof(OpenGl_ArbIns)); // nullify whole structure | |
828 | if (!FindProcShort (arbIns, glDrawArraysInstancedARB) | |
829 | || !FindProcShort (arbIns, glDrawElementsInstancedARB)) | |
830 | { | |
831 | delete arbIns; | |
832 | arbIns = NULL; | |
833 | } | |
834 | } | |
835 | ||
5f8b738e | 836 | // initialize FBO extension (EXT) |
837 | if (CheckExtension ("GL_EXT_framebuffer_object")) | |
2166f0fa SK |
838 | { |
839 | extFBO = new OpenGl_ExtFBO(); | |
5f8b738e | 840 | memset (extFBO, 0, sizeof(OpenGl_ExtFBO)); // nullify whole structure |
841 | if (!FindProcShort (extFBO, glGenFramebuffersEXT) | |
842 | || !FindProcShort (extFBO, glDeleteFramebuffersEXT) | |
843 | || !FindProcShort (extFBO, glBindFramebufferEXT) | |
844 | || !FindProcShort (extFBO, glFramebufferTexture2DEXT) | |
845 | || !FindProcShort (extFBO, glCheckFramebufferStatusEXT) | |
846 | || !FindProcShort (extFBO, glGenRenderbuffersEXT) | |
847 | || !FindProcShort (extFBO, glDeleteRenderbuffersEXT) | |
848 | || !FindProcShort (extFBO, glBindRenderbufferEXT) | |
849 | || !FindProcShort (extFBO, glRenderbufferStorageEXT) | |
1a7dfdb7 | 850 | || !FindProcShort (extFBO, glFramebufferRenderbufferEXT) |
851 | || !FindProcShort (extFBO, glGenerateMipmapEXT)) | |
2166f0fa SK |
852 | { |
853 | delete extFBO; | |
854 | extFBO = NULL; | |
855 | } | |
856 | } | |
5f8b738e | 857 | |
37eb4787 | 858 | // initialize GS extension (EXT) |
859 | if (CheckExtension ("GL_EXT_geometry_shader4")) | |
860 | { | |
861 | extGS = new OpenGl_ExtGS(); | |
862 | memset (extGS, 0, sizeof(OpenGl_ExtGS)); // nullify whole structure | |
863 | if (!FindProcShort (extGS, glProgramParameteriEXT)) | |
864 | { | |
865 | delete extGS; | |
866 | extGS = NULL; | |
867 | } | |
868 | } | |
869 | ||
5f8b738e | 870 | myGlCore20 = new OpenGl_GlCore20(); |
871 | memset (myGlCore20, 0, sizeof(OpenGl_GlCore20)); // nullify whole structure | |
872 | ||
86325709 | 873 | // Check if OpenGL 1.2 core functionality is actually present |
874 | Standard_Boolean hasGlCore12 = IsGlGreaterEqual (1, 2) | |
875 | && FindProcShort (myGlCore20, glBlendColor) | |
876 | && FindProcShort (myGlCore20, glBlendEquation) | |
877 | && FindProcShort (myGlCore20, glDrawRangeElements) | |
878 | && FindProcShort (myGlCore20, glTexImage3D) | |
879 | && FindProcShort (myGlCore20, glTexSubImage3D) | |
880 | && FindProcShort (myGlCore20, glCopyTexSubImage3D); | |
881 | ||
882 | // Check if OpenGL 1.3 core functionality is actually present | |
883 | Standard_Boolean hasGlCore13 = IsGlGreaterEqual (1, 3) | |
884 | && FindProcShort (myGlCore20, glActiveTexture) | |
885 | && FindProcShort (myGlCore20, glSampleCoverage) | |
886 | && FindProcShort (myGlCore20, glCompressedTexImage3D) | |
887 | && FindProcShort (myGlCore20, glCompressedTexImage2D) | |
888 | && FindProcShort (myGlCore20, glCompressedTexImage1D) | |
889 | && FindProcShort (myGlCore20, glCompressedTexSubImage3D) | |
890 | && FindProcShort (myGlCore20, glCompressedTexSubImage2D) | |
891 | && FindProcShort (myGlCore20, glCompressedTexSubImage1D) | |
892 | && FindProcShort (myGlCore20, glGetCompressedTexImage) | |
893 | // deprecated | |
894 | && FindProcShort (myGlCore20, glClientActiveTexture) | |
895 | && FindProcShort (myGlCore20, glMultiTexCoord1d) | |
896 | && FindProcShort (myGlCore20, glMultiTexCoord1dv) | |
897 | && FindProcShort (myGlCore20, glMultiTexCoord1f) | |
898 | && FindProcShort (myGlCore20, glMultiTexCoord1fv) | |
899 | && FindProcShort (myGlCore20, glMultiTexCoord1i) | |
900 | && FindProcShort (myGlCore20, glMultiTexCoord1iv) | |
901 | && FindProcShort (myGlCore20, glMultiTexCoord1s) | |
902 | && FindProcShort (myGlCore20, glMultiTexCoord1sv) | |
903 | && FindProcShort (myGlCore20, glMultiTexCoord2d) | |
904 | && FindProcShort (myGlCore20, glMultiTexCoord2dv) | |
905 | && FindProcShort (myGlCore20, glMultiTexCoord2f) | |
906 | && FindProcShort (myGlCore20, glMultiTexCoord2fv) | |
907 | && FindProcShort (myGlCore20, glMultiTexCoord2i) | |
908 | && FindProcShort (myGlCore20, glMultiTexCoord2iv) | |
909 | && FindProcShort (myGlCore20, glMultiTexCoord2s) | |
910 | && FindProcShort (myGlCore20, glMultiTexCoord2sv) | |
911 | && FindProcShort (myGlCore20, glMultiTexCoord3d) | |
912 | && FindProcShort (myGlCore20, glMultiTexCoord3dv) | |
913 | && FindProcShort (myGlCore20, glMultiTexCoord3f) | |
914 | && FindProcShort (myGlCore20, glMultiTexCoord3fv) | |
915 | && FindProcShort (myGlCore20, glMultiTexCoord3i) | |
916 | && FindProcShort (myGlCore20, glMultiTexCoord3iv) | |
917 | && FindProcShort (myGlCore20, glMultiTexCoord3s) | |
918 | && FindProcShort (myGlCore20, glMultiTexCoord3sv) | |
919 | && FindProcShort (myGlCore20, glMultiTexCoord4d) | |
920 | && FindProcShort (myGlCore20, glMultiTexCoord4dv) | |
921 | && FindProcShort (myGlCore20, glMultiTexCoord4f) | |
922 | && FindProcShort (myGlCore20, glMultiTexCoord4fv) | |
923 | && FindProcShort (myGlCore20, glMultiTexCoord4i) | |
924 | && FindProcShort (myGlCore20, glMultiTexCoord4iv) | |
925 | && FindProcShort (myGlCore20, glMultiTexCoord4s) | |
926 | && FindProcShort (myGlCore20, glMultiTexCoord4sv) | |
927 | && FindProcShort (myGlCore20, glLoadTransposeMatrixf) | |
928 | && FindProcShort (myGlCore20, glLoadTransposeMatrixd) | |
929 | && FindProcShort (myGlCore20, glMultTransposeMatrixf) | |
930 | && FindProcShort (myGlCore20, glMultTransposeMatrixd); | |
30f0ad28 | 931 | |
86325709 | 932 | // Check if OpenGL 1.4 core functionality is actually present |
933 | Standard_Boolean hasGlCore14 = IsGlGreaterEqual (1, 4) | |
934 | && FindProcShort (myGlCore20, glBlendFuncSeparate) | |
935 | && FindProcShort (myGlCore20, glMultiDrawArrays) | |
936 | && FindProcShort (myGlCore20, glMultiDrawElements) | |
937 | && FindProcShort (myGlCore20, glPointParameterf) | |
938 | && FindProcShort (myGlCore20, glPointParameterfv) | |
939 | && FindProcShort (myGlCore20, glPointParameteri) | |
940 | && FindProcShort (myGlCore20, glPointParameteriv); | |
941 | ||
942 | // Check if OpenGL 1.5 core functionality is actually present | |
943 | Standard_Boolean hasGlCore15 = IsGlGreaterEqual (1, 5) | |
944 | && FindProcShort (myGlCore20, glGenQueries) | |
945 | && FindProcShort (myGlCore20, glDeleteQueries) | |
946 | && FindProcShort (myGlCore20, glIsQuery) | |
947 | && FindProcShort (myGlCore20, glBeginQuery) | |
948 | && FindProcShort (myGlCore20, glEndQuery) | |
949 | && FindProcShort (myGlCore20, glGetQueryiv) | |
950 | && FindProcShort (myGlCore20, glGetQueryObjectiv) | |
951 | && FindProcShort (myGlCore20, glGetQueryObjectuiv) | |
952 | && FindProcShort (myGlCore20, glBindBuffer) | |
953 | && FindProcShort (myGlCore20, glDeleteBuffers) | |
954 | && FindProcShort (myGlCore20, glGenBuffers) | |
955 | && FindProcShort (myGlCore20, glIsBuffer) | |
956 | && FindProcShort (myGlCore20, glBufferData) | |
957 | && FindProcShort (myGlCore20, glBufferSubData) | |
958 | && FindProcShort (myGlCore20, glGetBufferSubData) | |
959 | && FindProcShort (myGlCore20, glMapBuffer) | |
960 | && FindProcShort (myGlCore20, glUnmapBuffer) | |
961 | && FindProcShort (myGlCore20, glGetBufferParameteriv) | |
962 | && FindProcShort (myGlCore20, glGetBufferPointerv); | |
963 | ||
964 | // Check if OpenGL 2.0 core functionality is actually present | |
965 | Standard_Boolean hasGlCore20 = IsGlGreaterEqual (2, 0) | |
966 | && FindProcShort (myGlCore20, glBlendEquationSeparate) | |
967 | && FindProcShort (myGlCore20, glDrawBuffers) | |
968 | && FindProcShort (myGlCore20, glStencilOpSeparate) | |
969 | && FindProcShort (myGlCore20, glStencilFuncSeparate) | |
970 | && FindProcShort (myGlCore20, glStencilMaskSeparate) | |
971 | && FindProcShort (myGlCore20, glAttachShader) | |
972 | && FindProcShort (myGlCore20, glBindAttribLocation) | |
973 | && FindProcShort (myGlCore20, glCompileShader) | |
974 | && FindProcShort (myGlCore20, glCreateProgram) | |
975 | && FindProcShort (myGlCore20, glCreateShader) | |
976 | && FindProcShort (myGlCore20, glDeleteProgram) | |
977 | && FindProcShort (myGlCore20, glDeleteShader) | |
978 | && FindProcShort (myGlCore20, glDetachShader) | |
979 | && FindProcShort (myGlCore20, glDisableVertexAttribArray) | |
980 | && FindProcShort (myGlCore20, glEnableVertexAttribArray) | |
981 | && FindProcShort (myGlCore20, glGetActiveAttrib) | |
982 | && FindProcShort (myGlCore20, glGetActiveUniform) | |
983 | && FindProcShort (myGlCore20, glGetAttachedShaders) | |
984 | && FindProcShort (myGlCore20, glGetAttribLocation) | |
985 | && FindProcShort (myGlCore20, glGetProgramiv) | |
986 | && FindProcShort (myGlCore20, glGetProgramInfoLog) | |
987 | && FindProcShort (myGlCore20, glGetShaderiv) | |
988 | && FindProcShort (myGlCore20, glGetShaderInfoLog) | |
989 | && FindProcShort (myGlCore20, glGetShaderSource) | |
990 | && FindProcShort (myGlCore20, glGetUniformLocation) | |
991 | && FindProcShort (myGlCore20, glGetUniformfv) | |
992 | && FindProcShort (myGlCore20, glGetUniformiv) | |
993 | && FindProcShort (myGlCore20, glGetVertexAttribdv) | |
994 | && FindProcShort (myGlCore20, glGetVertexAttribfv) | |
995 | && FindProcShort (myGlCore20, glGetVertexAttribiv) | |
996 | && FindProcShort (myGlCore20, glGetVertexAttribPointerv) | |
997 | && FindProcShort (myGlCore20, glIsProgram) | |
998 | && FindProcShort (myGlCore20, glIsShader) | |
999 | && FindProcShort (myGlCore20, glLinkProgram) | |
1000 | && FindProcShort (myGlCore20, glShaderSource) | |
1001 | && FindProcShort (myGlCore20, glUseProgram) | |
1002 | && FindProcShort (myGlCore20, glUniform1f) | |
1003 | && FindProcShort (myGlCore20, glUniform2f) | |
1004 | && FindProcShort (myGlCore20, glUniform3f) | |
1005 | && FindProcShort (myGlCore20, glUniform4f) | |
1006 | && FindProcShort (myGlCore20, glUniform1i) | |
1007 | && FindProcShort (myGlCore20, glUniform2i) | |
1008 | && FindProcShort (myGlCore20, glUniform3i) | |
1009 | && FindProcShort (myGlCore20, glUniform4i) | |
1010 | && FindProcShort (myGlCore20, glUniform1fv) | |
1011 | && FindProcShort (myGlCore20, glUniform2fv) | |
1012 | && FindProcShort (myGlCore20, glUniform3fv) | |
1013 | && FindProcShort (myGlCore20, glUniform4fv) | |
1014 | && FindProcShort (myGlCore20, glUniform1iv) | |
1015 | && FindProcShort (myGlCore20, glUniform2iv) | |
1016 | && FindProcShort (myGlCore20, glUniform3iv) | |
1017 | && FindProcShort (myGlCore20, glUniform4iv) | |
1018 | && FindProcShort (myGlCore20, glUniformMatrix2fv) | |
1019 | && FindProcShort (myGlCore20, glUniformMatrix3fv) | |
1020 | && FindProcShort (myGlCore20, glUniformMatrix4fv) | |
1021 | && FindProcShort (myGlCore20, glValidateProgram) | |
1022 | && FindProcShort (myGlCore20, glVertexAttrib1d) | |
1023 | && FindProcShort (myGlCore20, glVertexAttrib1dv) | |
1024 | && FindProcShort (myGlCore20, glVertexAttrib1f) | |
1025 | && FindProcShort (myGlCore20, glVertexAttrib1fv) | |
1026 | && FindProcShort (myGlCore20, glVertexAttrib1s) | |
1027 | && FindProcShort (myGlCore20, glVertexAttrib1sv) | |
1028 | && FindProcShort (myGlCore20, glVertexAttrib2d) | |
1029 | && FindProcShort (myGlCore20, glVertexAttrib2dv) | |
1030 | && FindProcShort (myGlCore20, glVertexAttrib2f) | |
1031 | && FindProcShort (myGlCore20, glVertexAttrib2fv) | |
1032 | && FindProcShort (myGlCore20, glVertexAttrib2s) | |
1033 | && FindProcShort (myGlCore20, glVertexAttrib2sv) | |
1034 | && FindProcShort (myGlCore20, glVertexAttrib3d) | |
1035 | && FindProcShort (myGlCore20, glVertexAttrib3dv) | |
1036 | && FindProcShort (myGlCore20, glVertexAttrib3f) | |
1037 | && FindProcShort (myGlCore20, glVertexAttrib3fv) | |
1038 | && FindProcShort (myGlCore20, glVertexAttrib3s) | |
1039 | && FindProcShort (myGlCore20, glVertexAttrib3sv) | |
1040 | && FindProcShort (myGlCore20, glVertexAttrib4Nbv) | |
1041 | && FindProcShort (myGlCore20, glVertexAttrib4Niv) | |
1042 | && FindProcShort (myGlCore20, glVertexAttrib4Nsv) | |
1043 | && FindProcShort (myGlCore20, glVertexAttrib4Nub) | |
1044 | && FindProcShort (myGlCore20, glVertexAttrib4Nubv) | |
1045 | && FindProcShort (myGlCore20, glVertexAttrib4Nuiv) | |
1046 | && FindProcShort (myGlCore20, glVertexAttrib4Nusv) | |
1047 | && FindProcShort (myGlCore20, glVertexAttrib4bv) | |
1048 | && FindProcShort (myGlCore20, glVertexAttrib4d) | |
1049 | && FindProcShort (myGlCore20, glVertexAttrib4dv) | |
1050 | && FindProcShort (myGlCore20, glVertexAttrib4f) | |
1051 | && FindProcShort (myGlCore20, glVertexAttrib4fv) | |
1052 | && FindProcShort (myGlCore20, glVertexAttrib4iv) | |
1053 | && FindProcShort (myGlCore20, glVertexAttrib4s) | |
1054 | && FindProcShort (myGlCore20, glVertexAttrib4sv) | |
1055 | && FindProcShort (myGlCore20, glVertexAttrib4ubv) | |
1056 | && FindProcShort (myGlCore20, glVertexAttrib4uiv) | |
1057 | && FindProcShort (myGlCore20, glVertexAttrib4usv) | |
1058 | && FindProcShort (myGlCore20, glVertexAttribPointer); | |
1059 | ||
1060 | if (!hasGlCore12) | |
1061 | { | |
1062 | myGlVerMajor = 1; | |
1063 | myGlVerMinor = 1; | |
1064 | return; | |
5f8b738e | 1065 | } |
86325709 | 1066 | else |
5f8b738e | 1067 | { |
86325709 | 1068 | core12 = myGlCore20; |
5f8b738e | 1069 | } |
86325709 | 1070 | if (!hasGlCore13) |
5f8b738e | 1071 | { |
86325709 | 1072 | myGlVerMajor = 1; |
1073 | myGlVerMinor = 2; | |
1074 | return; | |
5f8b738e | 1075 | } |
86325709 | 1076 | else |
1077 | { | |
1078 | core13 = myGlCore20; | |
5f8b738e | 1079 | } |
86325709 | 1080 | if(!hasGlCore14) |
1081 | { | |
1082 | myGlVerMajor = 1; | |
1083 | myGlVerMinor = 3; | |
1084 | return; | |
5f8b738e | 1085 | } |
86325709 | 1086 | else |
5f8b738e | 1087 | { |
5f8b738e | 1088 | core14 = myGlCore20; |
86325709 | 1089 | } |
1090 | if(!hasGlCore15) | |
1091 | { | |
1092 | myGlVerMajor = 1; | |
1093 | myGlVerMinor = 4; | |
1094 | return; | |
1095 | } | |
1096 | else | |
1097 | { | |
5f8b738e | 1098 | core15 = myGlCore20; |
86325709 | 1099 | } |
1100 | if(!hasGlCore20) | |
1101 | { | |
1102 | myGlVerMajor = 1; | |
1103 | myGlVerMinor = 5; | |
1104 | } | |
1105 | else | |
1106 | { | |
5f8b738e | 1107 | core20 = myGlCore20; |
1108 | } | |
2166f0fa | 1109 | } |
f0430952 | 1110 | |
1111 | // ======================================================================= | |
1112 | // function : MemoryInfo | |
1113 | // purpose : | |
1114 | // ======================================================================= | |
1115 | Standard_Size OpenGl_Context::AvailableMemory() const | |
1116 | { | |
1117 | if (atiMem) | |
1118 | { | |
1119 | // this is actually information for VBO pool | |
1120 | // however because pools are mostly shared | |
1121 | // it can be used for total GPU memory estimations | |
1122 | GLint aMemInfo[4]; | |
1123 | aMemInfo[0] = 0; | |
1124 | glGetIntegerv (GL_VBO_FREE_MEMORY_ATI, aMemInfo); | |
1125 | // returned value is in KiB, however this maybe changed in future | |
1126 | return Standard_Size(aMemInfo[0]) * 1024; | |
1127 | } | |
1128 | else if (nvxMem) | |
1129 | { | |
1130 | // current available dedicated video memory (in KiB), currently unused GPU memory | |
1131 | GLint aMemInfo = 0; | |
1132 | glGetIntegerv (GL_GPU_MEMORY_INFO_CURRENT_AVAILABLE_VIDMEM_NVX, &aMemInfo); | |
1133 | return Standard_Size(aMemInfo) * 1024; | |
1134 | } | |
1135 | return 0; | |
1136 | } | |
1137 | ||
1138 | // ======================================================================= | |
1139 | // function : MemoryInfo | |
1140 | // purpose : | |
1141 | // ======================================================================= | |
1142 | TCollection_AsciiString OpenGl_Context::MemoryInfo() const | |
1143 | { | |
1144 | TCollection_AsciiString anInfo; | |
1145 | if (atiMem) | |
1146 | { | |
1147 | GLint aValues[4]; | |
1148 | memset (aValues, 0, sizeof(aValues)); | |
1149 | glGetIntegerv (GL_VBO_FREE_MEMORY_ATI, aValues); | |
1150 | ||
1151 | // total memory free in the pool | |
1152 | anInfo += TCollection_AsciiString (" GPU free memory: ") + (aValues[0] / 1024) + " MiB\n"; | |
1153 | ||
1154 | // largest available free block in the pool | |
1155 | anInfo += TCollection_AsciiString (" Largest free block: ") + (aValues[1] / 1024) + " MiB\n"; | |
1156 | if (aValues[2] != aValues[0]) | |
1157 | { | |
1158 | // total auxiliary memory free | |
1159 | anInfo += TCollection_AsciiString (" Free memory: ") + (aValues[2] / 1024) + " MiB\n"; | |
1160 | } | |
1161 | } | |
1162 | else if (nvxMem) | |
1163 | { | |
1164 | //current available dedicated video memory (in KiB), currently unused GPU memory | |
1165 | GLint aValue = 0; | |
1166 | glGetIntegerv (GL_GPU_MEMORY_INFO_CURRENT_AVAILABLE_VIDMEM_NVX, &aValue); | |
1167 | anInfo += TCollection_AsciiString (" GPU free memory: ") + (aValue / 1024) + " MiB\n"; | |
1168 | ||
1169 | // dedicated video memory, total size (in KiB) of the GPU memory | |
1170 | GLint aDedicated = 0; | |
1171 | glGetIntegerv (GL_GPU_MEMORY_INFO_DEDICATED_VIDMEM_NVX, &aDedicated); | |
1172 | anInfo += TCollection_AsciiString (" GPU memory: ") + (aDedicated / 1024) + " MiB\n"; | |
1173 | ||
1174 | // total available memory, total size (in KiB) of the memory available for allocations | |
1175 | glGetIntegerv (GL_GPU_MEMORY_INFO_TOTAL_AVAILABLE_MEMORY_NVX, &aValue); | |
1176 | if (aValue != aDedicated) | |
1177 | { | |
1178 | // different only for special configurations | |
1179 | anInfo += TCollection_AsciiString (" Total memory: ") + (aValue / 1024) + " MiB\n"; | |
1180 | } | |
1181 | } | |
1182 | return anInfo; | |
1183 | } | |
5e27df78 | 1184 | |
1185 | ||
1186 | // ======================================================================= | |
1187 | // function : GetResource | |
1188 | // purpose : | |
1189 | // ======================================================================= | |
1190 | const Handle(OpenGl_Resource)& OpenGl_Context::GetResource (const TCollection_AsciiString& theKey) const | |
1191 | { | |
1192 | return mySharedResources->IsBound (theKey) ? mySharedResources->Find (theKey) : NULL_GL_RESOURCE; | |
1193 | } | |
1194 | ||
1195 | // ======================================================================= | |
1196 | // function : ShareResource | |
1197 | // purpose : | |
1198 | // ======================================================================= | |
1199 | Standard_Boolean OpenGl_Context::ShareResource (const TCollection_AsciiString& theKey, | |
1200 | const Handle(OpenGl_Resource)& theResource) | |
1201 | { | |
1202 | if (theKey.IsEmpty() || theResource.IsNull()) | |
1203 | { | |
1204 | return Standard_False; | |
1205 | } | |
1206 | return mySharedResources->Bind (theKey, theResource); | |
1207 | } | |
1208 | ||
1209 | // ======================================================================= | |
1210 | // function : ReleaseResource | |
1211 | // purpose : | |
1212 | // ======================================================================= | |
a174a3c5 | 1213 | void OpenGl_Context::ReleaseResource (const TCollection_AsciiString& theKey, |
1214 | const Standard_Boolean theToDelay) | |
5e27df78 | 1215 | { |
1216 | if (!mySharedResources->IsBound (theKey)) | |
1217 | { | |
1218 | return; | |
1219 | } | |
1220 | const Handle(OpenGl_Resource)& aRes = mySharedResources->Find (theKey); | |
1221 | if (aRes->GetRefCount() > 1) | |
1222 | { | |
1223 | return; | |
1224 | } | |
1225 | ||
a174a3c5 | 1226 | if (theToDelay) |
1227 | { | |
1228 | myDelayed->Bind (theKey, 1); | |
1229 | } | |
1230 | else | |
1231 | { | |
1232 | aRes->Release (this); | |
1233 | mySharedResources->UnBind (theKey); | |
1234 | } | |
5e27df78 | 1235 | } |
1236 | ||
1237 | // ======================================================================= | |
1238 | // function : DelayedRelease | |
1239 | // purpose : | |
1240 | // ======================================================================= | |
1241 | void OpenGl_Context::DelayedRelease (Handle(OpenGl_Resource)& theResource) | |
1242 | { | |
1243 | myReleaseQueue->Push (theResource); | |
1244 | theResource.Nullify(); | |
1245 | } | |
1246 | ||
1247 | // ======================================================================= | |
1248 | // function : ReleaseDelayed | |
1249 | // purpose : | |
1250 | // ======================================================================= | |
1251 | void OpenGl_Context::ReleaseDelayed() | |
1252 | { | |
a174a3c5 | 1253 | // release queued elements |
5e27df78 | 1254 | while (!myReleaseQueue->IsEmpty()) |
1255 | { | |
1256 | myReleaseQueue->Front()->Release (this); | |
1257 | myReleaseQueue->Pop(); | |
1258 | } | |
a174a3c5 | 1259 | |
265d4508 | 1260 | // release delayed shared resources |
a174a3c5 | 1261 | NCollection_Vector<TCollection_AsciiString> aDeadList; |
1262 | for (NCollection_DataMap<TCollection_AsciiString, Standard_Integer>::Iterator anIter (*myDelayed); | |
1263 | anIter.More(); anIter.Next()) | |
1264 | { | |
1265 | if (++anIter.ChangeValue() <= 2) | |
1266 | { | |
1267 | continue; // postpone release one more frame to ensure noone use it periodically | |
1268 | } | |
1269 | ||
1270 | const TCollection_AsciiString& aKey = anIter.Key(); | |
1271 | if (!mySharedResources->IsBound (aKey)) | |
1272 | { | |
1273 | // mixed unshared strategy delayed/undelayed was used! | |
1274 | aDeadList.Append (aKey); | |
1275 | continue; | |
1276 | } | |
1277 | ||
1278 | Handle(OpenGl_Resource)& aRes = mySharedResources->ChangeFind (aKey); | |
1279 | if (aRes->GetRefCount() > 1) | |
1280 | { | |
1281 | // should be only 1 instance in mySharedResources | |
1282 | // if not - resource was reused again | |
1283 | aDeadList.Append (aKey); | |
1284 | continue; | |
1285 | } | |
1286 | ||
1287 | // release resource if no one requiested it more than 2 redraw calls | |
1288 | aRes->Release (this); | |
1289 | mySharedResources->UnBind (aKey); | |
1290 | aDeadList.Append (aKey); | |
1291 | } | |
1292 | ||
1293 | for (Standard_Integer anIter = 0; anIter < aDeadList.Length(); ++anIter) | |
1294 | { | |
1295 | myDelayed->UnBind (aDeadList.Value (anIter)); | |
1296 | } | |
5e27df78 | 1297 | } |