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b311480e | 1 | // Created on: 2012-01-26 |
2 | // Created by: Kirill GAVRILOV | |
3 | // Copyright (c) 2012-2012 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 | ||
2166f0fa | 20 | |
5f8b738e | 21 | #if (defined(_WIN32) || defined(__WIN32__)) |
22 | #include <windows.h> | |
23 | #endif | |
24 | ||
2166f0fa SK |
25 | #include <OpenGl_Context.hxx> |
26 | ||
5f8b738e | 27 | #include <OpenGl_ArbVBO.hxx> |
5e27df78 | 28 | #include <OpenGl_ArbTBO.hxx> |
29 | #include <OpenGl_ArbIns.hxx> | |
5f8b738e | 30 | #include <OpenGl_ExtFBO.hxx> |
31 | #include <OpenGl_GlCore20.hxx> | |
32 | ||
2bd4c032 | 33 | #include <Standard_ProgramError.hxx> |
34 | ||
5f8b738e | 35 | #if (defined(_WIN32) || defined(__WIN32__)) |
36 | // | |
37 | #elif defined(__APPLE__) && !defined(MACOSX_USE_GLX) | |
38 | #include <dlfcn.h> | |
39 | #else | |
40 | #include <GL/glx.h> // glXGetProcAddress() | |
41 | #endif | |
42 | ||
f0430952 | 43 | // GL_NVX_gpu_memory_info |
44 | #ifndef GL_GPU_MEMORY_INFO_DEDICATED_VIDMEM_NVX | |
45 | enum | |
46 | { | |
47 | GL_GPU_MEMORY_INFO_DEDICATED_VIDMEM_NVX = 0x9047, | |
48 | GL_GPU_MEMORY_INFO_TOTAL_AVAILABLE_MEMORY_NVX = 0x9048, | |
49 | GL_GPU_MEMORY_INFO_CURRENT_AVAILABLE_VIDMEM_NVX = 0x9049, | |
50 | GL_GPU_MEMORY_INFO_EVICTION_COUNT_NVX = 0x904A, | |
51 | GL_GPU_MEMORY_INFO_EVICTED_MEMORY_NVX = 0x904B | |
52 | }; | |
53 | #endif | |
54 | ||
2166f0fa SK |
55 | IMPLEMENT_STANDARD_HANDLE (OpenGl_Context, Standard_Transient) |
56 | IMPLEMENT_STANDARD_RTTIEXT(OpenGl_Context, Standard_Transient) | |
57 | ||
5f8b738e | 58 | //! Make record shorter to retrieve function pointer using variable with same name |
59 | #define FindProcShort(theStruct, theFunc) FindProc(#theFunc, theStruct->theFunc) | |
2166f0fa | 60 | |
5e27df78 | 61 | namespace |
62 | { | |
63 | static const Handle(OpenGl_Resource) NULL_GL_RESOURCE; | |
64 | }; | |
65 | ||
2166f0fa SK |
66 | // ======================================================================= |
67 | // function : OpenGl_Context | |
68 | // purpose : | |
69 | // ======================================================================= | |
70 | OpenGl_Context::OpenGl_Context() | |
5f8b738e | 71 | : core12 (NULL), |
72 | core13 (NULL), | |
73 | core14 (NULL), | |
74 | core15 (NULL), | |
75 | core20 (NULL), | |
76 | arbVBO (NULL), | |
5e27df78 | 77 | arbTBO (NULL), |
78 | arbIns (NULL), | |
5f8b738e | 79 | extFBO (NULL), |
f0430952 | 80 | atiMem (Standard_False), |
81 | nvxMem (Standard_False), | |
5e27df78 | 82 | mySharedResources (new OpenGl_ResourcesMap()), |
83 | myReleaseQueue (new OpenGl_ResourcesQueue()), | |
5f8b738e | 84 | myGlLibHandle (NULL), |
85 | myGlCore20 (NULL), | |
86 | myGlVerMajor (0), | |
87 | myGlVerMinor (0), | |
664cae74 | 88 | myIsFeedback (Standard_False), |
5f8b738e | 89 | myIsInitialized (Standard_False) |
2166f0fa | 90 | { |
5f8b738e | 91 | #if defined(MAC_OS_X_VERSION_10_3) && !defined(MACOSX_USE_GLX) |
92 | // Vendors can not extend functionality on this system | |
93 | // and developers are limited to OpenGL support provided by Mac OS X SDK. | |
94 | // We retrieve function pointers from system library | |
95 | // to generalize extensions support on all platforms. | |
96 | // In this way we also reach binary compatibility benefit between OS releases | |
97 | // if some newest functionality is optionally used. | |
98 | // Notice that GL version / extension availability checks are required | |
99 | // because function pointers may be available but not functionality itself | |
100 | // (depends on renderer). | |
101 | myGlLibHandle = dlopen ("/System/Library/Frameworks/OpenGL.framework/Versions/Current/OpenGL", RTLD_LAZY); | |
102 | #endif | |
2166f0fa SK |
103 | } |
104 | ||
105 | // ======================================================================= | |
106 | // function : ~OpenGl_Context | |
107 | // purpose : | |
108 | // ======================================================================= | |
109 | OpenGl_Context::~OpenGl_Context() | |
110 | { | |
5e27df78 | 111 | // release clean up queue |
112 | ReleaseDelayed(); | |
113 | ||
114 | // release shared resources if any | |
115 | if (((const Handle(Standard_Transient)& )mySharedResources)->GetRefCount() <= 1) | |
116 | { | |
117 | for (NCollection_DataMap<TCollection_AsciiString, Handle(OpenGl_Resource)>::Iterator anIter (*mySharedResources); | |
118 | anIter.More(); anIter.Next()) | |
119 | { | |
120 | anIter.Value()->Release (this); | |
121 | } | |
122 | } | |
123 | mySharedResources.Nullify(); | |
124 | ||
5f8b738e | 125 | delete myGlCore20; |
126 | delete arbVBO; | |
127 | delete extFBO; | |
128 | } | |
129 | ||
5e27df78 | 130 | // ======================================================================= |
131 | // function : Share | |
132 | // purpose : | |
133 | // ======================================================================= | |
134 | void OpenGl_Context::Share (const Handle(OpenGl_Context)& theShareCtx) | |
135 | { | |
136 | if (!theShareCtx.IsNull()) | |
137 | { | |
138 | mySharedResources = theShareCtx->mySharedResources; | |
139 | myReleaseQueue = theShareCtx->myReleaseQueue; | |
140 | } | |
141 | } | |
142 | ||
86fa64d9 | 143 | // ======================================================================= |
144 | // function : IsCurrent | |
145 | // purpose : | |
146 | // ======================================================================= | |
147 | Standard_Boolean OpenGl_Context::IsCurrent() const | |
148 | { | |
149 | #if (defined(_WIN32) || defined(__WIN32__)) | |
150 | if (myWindowDC == NULL || myGContext == NULL) | |
151 | { | |
152 | return Standard_False; | |
153 | } | |
154 | return (( (HDC )myWindowDC == wglGetCurrentDC()) | |
155 | && ((HGLRC )myGContext == wglGetCurrentContext())); | |
156 | #else | |
157 | if (myDisplay == NULL || myWindow == 0 || myGContext == 0) | |
158 | { | |
159 | return Standard_False; | |
160 | } | |
161 | ||
162 | return ( ((Display* )myDisplay == glXGetCurrentDisplay()) | |
163 | && ((GLXContext )myGContext == glXGetCurrentContext()) | |
164 | && ((GLXDrawable )myWindow == glXGetCurrentDrawable())); | |
165 | #endif | |
166 | } | |
167 | ||
2bd4c032 | 168 | // ======================================================================= |
169 | // function : MakeCurrent | |
170 | // purpose : | |
171 | // ======================================================================= | |
172 | Standard_Boolean OpenGl_Context::MakeCurrent() | |
173 | { | |
174 | #if (defined(_WIN32) || defined(__WIN32__)) | |
86fa64d9 | 175 | if (myWindowDC == NULL || myGContext == NULL) |
2bd4c032 | 176 | { |
86fa64d9 | 177 | Standard_ProgramError_Raise_if (myIsInitialized, "OpenGl_Context::Init() should be called before!"); |
178 | return Standard_False; | |
179 | } | |
180 | ||
181 | // technically it should be safe to activate already bound GL context | |
182 | // however some drivers (Intel etc.) may FAIL doing this for unknown reason | |
183 | if (IsCurrent()) | |
184 | { | |
185 | return Standard_True; | |
186 | } | |
187 | else if (wglMakeCurrent ((HDC )myWindowDC, (HGLRC )myGContext) != TRUE) | |
188 | { | |
189 | // notice that glGetError() couldn't be used here! | |
190 | wchar_t* aMsgBuff = NULL; | |
191 | DWORD anErrorCode = GetLastError(); | |
192 | FormatMessageW (FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, | |
193 | NULL, anErrorCode, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (wchar_t* )&aMsgBuff, 0, NULL); | |
194 | if (aMsgBuff != NULL) | |
195 | { | |
196 | std::wcerr << L"OpenGL interface: wglMakeCurrent() failed. " << aMsgBuff << L" (" << int(anErrorCode) << L")\n"; | |
197 | LocalFree (aMsgBuff); | |
198 | } | |
199 | else | |
200 | { | |
201 | std::wcerr << L"OpenGL interface: wglMakeCurrent() failed with #" << int(anErrorCode) << L" error code\n"; | |
202 | } | |
2bd4c032 | 203 | return Standard_False; |
204 | } | |
205 | #else | |
86fa64d9 | 206 | if (myDisplay == NULL || myWindow == 0 || myGContext == 0) |
207 | { | |
208 | Standard_ProgramError_Raise_if (myIsInitialized, "OpenGl_Context::Init() should be called before!"); | |
209 | return Standard_False; | |
210 | } | |
211 | ||
212 | if (!glXMakeCurrent ((Display* )myDisplay, (GLXDrawable )myWindow, (GLXContext )myGContext)) | |
2bd4c032 | 213 | { |
214 | // if there is no current context it might be impossible to use glGetError() correctly | |
215 | //std::cerr << "glXMakeCurrent() failed!\n"; | |
216 | return Standard_False; | |
217 | } | |
218 | #endif | |
219 | return Standard_True; | |
220 | } | |
221 | ||
5e27df78 | 222 | // ======================================================================= |
223 | // function : SwapBuffers | |
224 | // purpose : | |
225 | // ======================================================================= | |
226 | void OpenGl_Context::SwapBuffers() | |
227 | { | |
228 | #if (defined(_WIN32) || defined(__WIN32__)) | |
229 | if ((HDC )myWindowDC != NULL) | |
230 | { | |
231 | ::SwapBuffers ((HDC )myWindowDC); | |
232 | glFlush(); | |
233 | } | |
234 | #else | |
235 | if ((Display* )myDisplay != NULL) | |
236 | { | |
237 | glXSwapBuffers ((Display* )myDisplay, (GLXDrawable )myWindow); | |
238 | } | |
239 | #endif | |
240 | } | |
241 | ||
5f8b738e | 242 | // ======================================================================= |
243 | // function : findProc | |
244 | // purpose : | |
245 | // ======================================================================= | |
246 | void* OpenGl_Context::findProc (const char* theFuncName) | |
247 | { | |
248 | #if (defined(_WIN32) || defined(__WIN32__)) | |
249 | return wglGetProcAddress (theFuncName); | |
250 | #elif defined(__APPLE__) && !defined(MACOSX_USE_GLX) | |
251 | return (myGlLibHandle != NULL) ? dlsym (myGlLibHandle, theFuncName) : NULL; | |
252 | #else | |
253 | return (void* )glXGetProcAddress ((const GLubyte* )theFuncName); | |
254 | #endif | |
2166f0fa SK |
255 | } |
256 | ||
257 | // ======================================================================= | |
258 | // function : CheckExtension | |
259 | // purpose : | |
260 | // ======================================================================= | |
2bd4c032 | 261 | Standard_Boolean OpenGl_Context::CheckExtension (const char* theExtName) const |
2166f0fa | 262 | { |
5f8b738e | 263 | if (theExtName == NULL) |
264 | { | |
265 | std::cerr << "CheckExtension called with NULL string!\n"; | |
266 | return Standard_False; | |
267 | } | |
268 | int anExtNameLen = strlen (theExtName); | |
269 | ||
270 | // available since OpenGL 3.0 | |
271 | // and the ONLY way to check extensions with OpenGL 3.1+ core profile | |
2bd4c032 | 272 | /**if (IsGlGreaterEqual (3, 0)) |
5f8b738e | 273 | { |
274 | GLint anExtNb = 0; | |
275 | glGetIntegerv (GL_NUM_EXTENSIONS, &anExtNb); | |
276 | for (GLint anIter = 0; anIter < anExtNb; ++anIter) | |
277 | { | |
278 | const char* anExtension = (const char* )core30->glGetStringi (GL_EXTENSIONS, (GLuint )anIter); | |
279 | if (anExtension[anExtNameLen] == '\0' && | |
280 | strncmp (anExtension, theExtName, anExtNameLen) == 0) | |
281 | { | |
282 | return Standard_True; | |
283 | } | |
284 | } | |
285 | return Standard_False; | |
286 | }*/ | |
287 | ||
288 | // use old way with huge string for all extensions | |
289 | const char* anExtString = (const char* )glGetString (GL_EXTENSIONS); | |
290 | if (anExtString == NULL) | |
291 | { | |
292 | std::cerr << "glGetString (GL_EXTENSIONS) returns NULL! No GL context?\n"; | |
2166f0fa SK |
293 | return Standard_False; |
294 | } | |
295 | ||
296 | // Search for theExtName in the extensions string. | |
297 | // Use of strstr() is not sufficient because extension names can be prefixes of other extension names. | |
5f8b738e | 298 | char* aPtrIter = (char* )anExtString; |
299 | const char* aPtrEnd = aPtrIter + strlen (anExtString); | |
2166f0fa SK |
300 | while (aPtrIter < aPtrEnd) |
301 | { | |
302 | int n = strcspn (aPtrIter, " "); | |
5f8b738e | 303 | if ((n == anExtNameLen) && (strncmp (aPtrIter, theExtName, anExtNameLen) == 0)) |
304 | { | |
2166f0fa | 305 | return Standard_True; |
5f8b738e | 306 | } |
2166f0fa SK |
307 | aPtrIter += (n + 1); |
308 | } | |
309 | return Standard_False; | |
310 | } | |
311 | ||
312 | // ======================================================================= | |
313 | // function : Init | |
314 | // purpose : | |
315 | // ======================================================================= | |
f0430952 | 316 | Standard_Boolean OpenGl_Context::Init() |
2166f0fa | 317 | { |
2bd4c032 | 318 | if (myIsInitialized) |
5f8b738e | 319 | { |
f0430952 | 320 | return Standard_True; |
5f8b738e | 321 | } |
2bd4c032 | 322 | |
323 | #if (defined(_WIN32) || defined(__WIN32__)) | |
324 | myWindowDC = (Aspect_Handle )wglGetCurrentDC(); | |
325 | myGContext = (Aspect_RenderingContext )wglGetCurrentContext(); | |
326 | #else | |
327 | myDisplay = (Aspect_Display )glXGetCurrentDisplay(); | |
328 | myGContext = (Aspect_RenderingContext )glXGetCurrentContext(); | |
329 | myWindow = (Aspect_Drawable )glXGetCurrentDrawable(); | |
330 | #endif | |
f0430952 | 331 | if (myGContext == NULL) |
332 | { | |
333 | return Standard_False; | |
334 | } | |
2bd4c032 | 335 | |
336 | init(); | |
337 | myIsInitialized = Standard_True; | |
f0430952 | 338 | return Standard_True; |
2bd4c032 | 339 | } |
340 | ||
341 | // ======================================================================= | |
342 | // function : Init | |
343 | // purpose : | |
344 | // ======================================================================= | |
345 | #if (defined(_WIN32) || defined(__WIN32__)) | |
f0430952 | 346 | Standard_Boolean OpenGl_Context::Init (const Aspect_Handle theWindow, |
347 | const Aspect_Handle theWindowDC, | |
348 | const Aspect_RenderingContext theGContext) | |
2bd4c032 | 349 | #else |
f0430952 | 350 | Standard_Boolean OpenGl_Context::Init (const Aspect_Drawable theWindow, |
351 | const Aspect_Display theDisplay, | |
352 | const Aspect_RenderingContext theGContext) | |
2bd4c032 | 353 | #endif |
354 | { | |
355 | Standard_ProgramError_Raise_if (myIsInitialized, "OpenGl_Context::Init() should be called only once!"); | |
356 | ||
357 | myWindow = theWindow; | |
358 | myGContext = theGContext; | |
359 | #if (defined(_WIN32) || defined(__WIN32__)) | |
360 | myWindowDC = theWindowDC; | |
361 | #else | |
362 | myDisplay = theDisplay; | |
363 | #endif | |
86fa64d9 | 364 | if (myGContext == NULL || !MakeCurrent()) |
f0430952 | 365 | { |
366 | return Standard_False; | |
367 | } | |
2bd4c032 | 368 | |
369 | init(); | |
370 | myIsInitialized = Standard_True; | |
f0430952 | 371 | return Standard_True; |
5f8b738e | 372 | } |
373 | ||
374 | // ======================================================================= | |
375 | // function : ResetErrors | |
376 | // purpose : | |
377 | // ======================================================================= | |
378 | void OpenGl_Context::ResetErrors() | |
379 | { | |
380 | while (glGetError() != GL_NO_ERROR) | |
381 | { | |
382 | // | |
383 | } | |
384 | } | |
385 | ||
386 | // ======================================================================= | |
387 | // function : readGlVersion | |
388 | // purpose : | |
389 | // ======================================================================= | |
390 | void OpenGl_Context::readGlVersion() | |
391 | { | |
392 | // reset values | |
393 | myGlVerMajor = 0; | |
394 | myGlVerMinor = 0; | |
395 | ||
396 | // available since OpenGL 3.0 | |
397 | GLint aMajor, aMinor; | |
398 | glGetIntegerv (GL_MAJOR_VERSION, &aMajor); | |
399 | glGetIntegerv (GL_MINOR_VERSION, &aMinor); | |
400 | if (glGetError() == GL_NO_ERROR) | |
401 | { | |
402 | myGlVerMajor = aMajor; | |
403 | myGlVerMinor = aMinor; | |
404 | return; | |
405 | } | |
406 | ResetErrors(); | |
407 | ||
408 | // Read version string. | |
409 | // Notice that only first two numbers splitted by point '2.1 XXXXX' are significant. | |
410 | // Following trash (after space) is vendor-specific. | |
411 | // New drivers also returns micro version of GL like '3.3.0' which has no meaning | |
412 | // and should be considered as vendor-specific too. | |
413 | const char* aVerStr = (const char* )glGetString (GL_VERSION); | |
414 | if (aVerStr == NULL || *aVerStr == '\0') | |
415 | { | |
416 | // invalid GL context | |
417 | return; | |
418 | } | |
419 | ||
420 | // parse string for major number | |
421 | char aMajorStr[32]; | |
422 | char aMinorStr[32]; | |
423 | size_t aMajIter = 0; | |
424 | while (aVerStr[aMajIter] >= '0' && aVerStr[aMajIter] <= '9') | |
425 | { | |
426 | ++aMajIter; | |
427 | } | |
428 | if (aMajIter == 0 || aMajIter >= sizeof(aMajorStr)) | |
429 | { | |
430 | return; | |
431 | } | |
432 | memcpy (aMajorStr, aVerStr, aMajIter); | |
433 | aMajorStr[aMajIter] = '\0'; | |
434 | ||
435 | // parse string for minor number | |
436 | size_t aMinIter = aMajIter + 1; | |
437 | while (aVerStr[aMinIter] >= '0' && aVerStr[aMinIter] <= '9') | |
438 | { | |
439 | ++aMinIter; | |
440 | } | |
441 | size_t aMinLen = aMinIter - aMajIter - 1; | |
442 | if (aMinLen == 0 || aMinLen >= sizeof(aMinorStr)) | |
443 | { | |
444 | return; | |
445 | } | |
446 | memcpy (aMinorStr, aVerStr, aMinLen); | |
447 | aMinorStr[aMinLen] = '\0'; | |
448 | ||
449 | // read numbers | |
450 | myGlVerMajor = atoi (aMajorStr); | |
451 | myGlVerMinor = atoi (aMinorStr); | |
452 | ||
453 | if (myGlVerMajor <= 0) | |
454 | { | |
455 | myGlVerMajor = 0; | |
456 | myGlVerMinor = 0; | |
457 | } | |
458 | } | |
459 | ||
460 | // ======================================================================= | |
461 | // function : init | |
462 | // purpose : | |
463 | // ======================================================================= | |
464 | void OpenGl_Context::init() | |
465 | { | |
466 | // read version | |
467 | readGlVersion(); | |
468 | ||
f0430952 | 469 | atiMem = CheckExtension ("GL_ATI_meminfo"); |
470 | nvxMem = CheckExtension ("GL_NVX_gpu_memory_info"); | |
471 | ||
5f8b738e | 472 | // initialize VBO extension (ARB) |
473 | if (CheckExtension ("GL_ARB_vertex_buffer_object")) | |
2166f0fa SK |
474 | { |
475 | arbVBO = new OpenGl_ArbVBO(); | |
5f8b738e | 476 | memset (arbVBO, 0, sizeof(OpenGl_ArbVBO)); // nullify whole structure |
477 | if (!FindProcShort (arbVBO, glGenBuffersARB) | |
478 | || !FindProcShort (arbVBO, glBindBufferARB) | |
479 | || !FindProcShort (arbVBO, glBufferDataARB) | |
480 | || !FindProcShort (arbVBO, glDeleteBuffersARB)) | |
2166f0fa SK |
481 | { |
482 | delete arbVBO; | |
483 | arbVBO = NULL; | |
484 | } | |
485 | } | |
486 | ||
5e27df78 | 487 | // initialize TBO extension (ARB) |
488 | if (CheckExtension ("GL_ARB_texture_buffer_object")) | |
489 | { | |
490 | arbTBO = new OpenGl_ArbTBO(); | |
491 | memset (arbTBO, 0, sizeof(OpenGl_ArbTBO)); // nullify whole structure | |
492 | if (!FindProcShort (arbTBO, glTexBufferARB)) | |
493 | { | |
494 | delete arbTBO; | |
495 | arbTBO = NULL; | |
496 | } | |
497 | } | |
498 | ||
499 | // initialize hardware instancing extension (ARB) | |
500 | if (CheckExtension ("GL_ARB_draw_instanced")) | |
501 | { | |
502 | arbIns = new OpenGl_ArbIns(); | |
503 | memset (arbIns, 0, sizeof(OpenGl_ArbIns)); // nullify whole structure | |
504 | if (!FindProcShort (arbIns, glDrawArraysInstancedARB) | |
505 | || !FindProcShort (arbIns, glDrawElementsInstancedARB)) | |
506 | { | |
507 | delete arbIns; | |
508 | arbIns = NULL; | |
509 | } | |
510 | } | |
511 | ||
5f8b738e | 512 | // initialize FBO extension (EXT) |
513 | if (CheckExtension ("GL_EXT_framebuffer_object")) | |
2166f0fa SK |
514 | { |
515 | extFBO = new OpenGl_ExtFBO(); | |
5f8b738e | 516 | memset (extFBO, 0, sizeof(OpenGl_ExtFBO)); // nullify whole structure |
517 | if (!FindProcShort (extFBO, glGenFramebuffersEXT) | |
518 | || !FindProcShort (extFBO, glDeleteFramebuffersEXT) | |
519 | || !FindProcShort (extFBO, glBindFramebufferEXT) | |
520 | || !FindProcShort (extFBO, glFramebufferTexture2DEXT) | |
521 | || !FindProcShort (extFBO, glCheckFramebufferStatusEXT) | |
522 | || !FindProcShort (extFBO, glGenRenderbuffersEXT) | |
523 | || !FindProcShort (extFBO, glDeleteRenderbuffersEXT) | |
524 | || !FindProcShort (extFBO, glBindRenderbufferEXT) | |
525 | || !FindProcShort (extFBO, glRenderbufferStorageEXT) | |
526 | || !FindProcShort (extFBO, glFramebufferRenderbufferEXT)) | |
2166f0fa SK |
527 | { |
528 | delete extFBO; | |
529 | extFBO = NULL; | |
530 | } | |
531 | } | |
5f8b738e | 532 | |
533 | myGlCore20 = new OpenGl_GlCore20(); | |
534 | memset (myGlCore20, 0, sizeof(OpenGl_GlCore20)); // nullify whole structure | |
535 | ||
536 | // initialize OpenGL 1.2 core functionality | |
2bd4c032 | 537 | if (IsGlGreaterEqual (1, 2)) |
5f8b738e | 538 | { |
539 | if (!FindProcShort (myGlCore20, glBlendColor) | |
540 | || !FindProcShort (myGlCore20, glBlendEquation) | |
541 | || !FindProcShort (myGlCore20, glDrawRangeElements) | |
542 | || !FindProcShort (myGlCore20, glTexImage3D) | |
543 | || !FindProcShort (myGlCore20, glTexSubImage3D) | |
544 | || !FindProcShort (myGlCore20, glCopyTexSubImage3D)) | |
545 | { | |
546 | myGlVerMajor = 1; | |
547 | myGlVerMinor = 1; | |
548 | } | |
549 | } | |
550 | ||
551 | // initialize OpenGL 1.3 core functionality | |
2bd4c032 | 552 | if (IsGlGreaterEqual (1, 3)) |
5f8b738e | 553 | { |
554 | if (!FindProcShort (myGlCore20, glActiveTexture) | |
555 | || !FindProcShort (myGlCore20, glSampleCoverage) | |
556 | || !FindProcShort (myGlCore20, glCompressedTexImage3D) | |
557 | || !FindProcShort (myGlCore20, glCompressedTexImage2D) | |
558 | || !FindProcShort (myGlCore20, glCompressedTexImage1D) | |
559 | || !FindProcShort (myGlCore20, glCompressedTexSubImage3D) | |
560 | || !FindProcShort (myGlCore20, glCompressedTexSubImage2D) | |
561 | || !FindProcShort (myGlCore20, glCompressedTexSubImage1D) | |
562 | || !FindProcShort (myGlCore20, glGetCompressedTexImage) | |
563 | // deprecated | |
564 | || !FindProcShort (myGlCore20, glClientActiveTexture) | |
565 | || !FindProcShort (myGlCore20, glMultiTexCoord1d) | |
566 | || !FindProcShort (myGlCore20, glMultiTexCoord1dv) | |
567 | || !FindProcShort (myGlCore20, glMultiTexCoord1f) | |
568 | || !FindProcShort (myGlCore20, glMultiTexCoord1fv) | |
569 | || !FindProcShort (myGlCore20, glMultiTexCoord1i) | |
570 | || !FindProcShort (myGlCore20, glMultiTexCoord1iv) | |
571 | || !FindProcShort (myGlCore20, glMultiTexCoord1s) | |
572 | || !FindProcShort (myGlCore20, glMultiTexCoord1sv) | |
573 | || !FindProcShort (myGlCore20, glMultiTexCoord2d) | |
574 | || !FindProcShort (myGlCore20, glMultiTexCoord2dv) | |
575 | || !FindProcShort (myGlCore20, glMultiTexCoord2f) | |
576 | || !FindProcShort (myGlCore20, glMultiTexCoord2fv) | |
577 | || !FindProcShort (myGlCore20, glMultiTexCoord2i) | |
578 | || !FindProcShort (myGlCore20, glMultiTexCoord2iv) | |
579 | || !FindProcShort (myGlCore20, glMultiTexCoord2s) | |
580 | || !FindProcShort (myGlCore20, glMultiTexCoord2sv) | |
581 | || !FindProcShort (myGlCore20, glMultiTexCoord3d) | |
582 | || !FindProcShort (myGlCore20, glMultiTexCoord3dv) | |
583 | || !FindProcShort (myGlCore20, glMultiTexCoord3f) | |
584 | || !FindProcShort (myGlCore20, glMultiTexCoord3fv) | |
585 | || !FindProcShort (myGlCore20, glMultiTexCoord3i) | |
586 | || !FindProcShort (myGlCore20, glMultiTexCoord3iv) | |
587 | || !FindProcShort (myGlCore20, glMultiTexCoord3s) | |
588 | || !FindProcShort (myGlCore20, glMultiTexCoord3sv) | |
589 | || !FindProcShort (myGlCore20, glMultiTexCoord4d) | |
590 | || !FindProcShort (myGlCore20, glMultiTexCoord4dv) | |
591 | || !FindProcShort (myGlCore20, glMultiTexCoord4f) | |
592 | || !FindProcShort (myGlCore20, glMultiTexCoord4fv) | |
593 | || !FindProcShort (myGlCore20, glMultiTexCoord4i) | |
594 | || !FindProcShort (myGlCore20, glMultiTexCoord4iv) | |
595 | || !FindProcShort (myGlCore20, glMultiTexCoord4s) | |
596 | || !FindProcShort (myGlCore20, glMultiTexCoord4sv) | |
597 | || !FindProcShort (myGlCore20, glLoadTransposeMatrixf) | |
598 | || !FindProcShort (myGlCore20, glLoadTransposeMatrixd) | |
599 | || !FindProcShort (myGlCore20, glMultTransposeMatrixf) | |
600 | || !FindProcShort (myGlCore20, glMultTransposeMatrixd)) | |
601 | { | |
602 | myGlVerMajor = 1; | |
603 | myGlVerMinor = 2; | |
604 | core12 = myGlCore20; | |
605 | } | |
606 | } | |
607 | ||
608 | // initialize OpenGL 1.4 core functionality | |
2bd4c032 | 609 | if (IsGlGreaterEqual (1, 4)) |
5f8b738e | 610 | { |
611 | if (!FindProcShort (myGlCore20, glBlendFuncSeparate) | |
612 | || !FindProcShort (myGlCore20, glMultiDrawArrays) | |
613 | || !FindProcShort (myGlCore20, glMultiDrawElements) | |
614 | || !FindProcShort (myGlCore20, glPointParameterf) | |
615 | || !FindProcShort (myGlCore20, glPointParameterfv) | |
616 | || !FindProcShort (myGlCore20, glPointParameteri) | |
617 | || !FindProcShort (myGlCore20, glPointParameteriv)) | |
618 | { | |
619 | myGlVerMajor = 1; | |
620 | myGlVerMinor = 3; | |
621 | core12 = myGlCore20; | |
622 | core13 = myGlCore20; | |
623 | } | |
624 | } | |
625 | ||
626 | // initialize OpenGL 1.5 core functionality | |
2bd4c032 | 627 | if (IsGlGreaterEqual (1, 5)) |
5f8b738e | 628 | { |
629 | if (!FindProcShort (myGlCore20, glGenQueries) | |
630 | || !FindProcShort (myGlCore20, glDeleteQueries) | |
631 | || !FindProcShort (myGlCore20, glIsQuery) | |
632 | || !FindProcShort (myGlCore20, glBeginQuery) | |
633 | || !FindProcShort (myGlCore20, glEndQuery) | |
634 | || !FindProcShort (myGlCore20, glGetQueryiv) | |
635 | || !FindProcShort (myGlCore20, glGetQueryObjectiv) | |
636 | || !FindProcShort (myGlCore20, glGetQueryObjectuiv) | |
637 | || !FindProcShort (myGlCore20, glBindBuffer) | |
638 | || !FindProcShort (myGlCore20, glDeleteBuffers) | |
639 | || !FindProcShort (myGlCore20, glGenBuffers) | |
640 | || !FindProcShort (myGlCore20, glIsBuffer) | |
641 | || !FindProcShort (myGlCore20, glBufferData) | |
642 | || !FindProcShort (myGlCore20, glBufferSubData) | |
643 | || !FindProcShort (myGlCore20, glGetBufferSubData) | |
644 | || !FindProcShort (myGlCore20, glMapBuffer) | |
645 | || !FindProcShort (myGlCore20, glUnmapBuffer) | |
646 | || !FindProcShort (myGlCore20, glGetBufferParameteriv) | |
647 | || !FindProcShort (myGlCore20, glGetBufferPointerv)) | |
648 | { | |
649 | myGlVerMajor = 1; | |
650 | myGlVerMinor = 4; | |
651 | core12 = myGlCore20; | |
652 | core13 = myGlCore20; | |
653 | core14 = myGlCore20; | |
654 | } | |
655 | } | |
656 | ||
657 | // initialize OpenGL 2.0 core functionality | |
2bd4c032 | 658 | if (IsGlGreaterEqual (2, 0)) |
5f8b738e | 659 | { |
660 | if (!FindProcShort (myGlCore20, glBlendEquationSeparate) | |
661 | || !FindProcShort (myGlCore20, glDrawBuffers) | |
662 | || !FindProcShort (myGlCore20, glStencilOpSeparate) | |
663 | || !FindProcShort (myGlCore20, glStencilFuncSeparate) | |
664 | || !FindProcShort (myGlCore20, glStencilMaskSeparate) | |
665 | || !FindProcShort (myGlCore20, glAttachShader) | |
666 | || !FindProcShort (myGlCore20, glBindAttribLocation) | |
667 | || !FindProcShort (myGlCore20, glCompileShader) | |
668 | || !FindProcShort (myGlCore20, glCreateProgram) | |
669 | || !FindProcShort (myGlCore20, glCreateShader) | |
670 | || !FindProcShort (myGlCore20, glDeleteProgram) | |
671 | || !FindProcShort (myGlCore20, glDeleteShader) | |
672 | || !FindProcShort (myGlCore20, glDetachShader) | |
673 | || !FindProcShort (myGlCore20, glDisableVertexAttribArray) | |
674 | || !FindProcShort (myGlCore20, glEnableVertexAttribArray) | |
675 | || !FindProcShort (myGlCore20, glGetActiveAttrib) | |
676 | || !FindProcShort (myGlCore20, glGetActiveUniform) | |
677 | || !FindProcShort (myGlCore20, glGetAttachedShaders) | |
678 | || !FindProcShort (myGlCore20, glGetAttribLocation) | |
679 | || !FindProcShort (myGlCore20, glGetProgramiv) | |
680 | || !FindProcShort (myGlCore20, glGetProgramInfoLog) | |
681 | || !FindProcShort (myGlCore20, glGetShaderiv) | |
682 | || !FindProcShort (myGlCore20, glGetShaderInfoLog) | |
683 | || !FindProcShort (myGlCore20, glGetShaderSource) | |
684 | || !FindProcShort (myGlCore20, glGetUniformLocation) | |
685 | || !FindProcShort (myGlCore20, glGetUniformfv) | |
686 | || !FindProcShort (myGlCore20, glGetUniformiv) | |
687 | || !FindProcShort (myGlCore20, glGetVertexAttribdv) | |
688 | || !FindProcShort (myGlCore20, glGetVertexAttribfv) | |
689 | || !FindProcShort (myGlCore20, glGetVertexAttribiv) | |
690 | || !FindProcShort (myGlCore20, glGetVertexAttribPointerv) | |
691 | || !FindProcShort (myGlCore20, glIsProgram) | |
692 | || !FindProcShort (myGlCore20, glIsShader) | |
693 | || !FindProcShort (myGlCore20, glLinkProgram) | |
694 | || !FindProcShort (myGlCore20, glShaderSource) | |
695 | || !FindProcShort (myGlCore20, glUseProgram) | |
696 | || !FindProcShort (myGlCore20, glUniform1f) | |
697 | || !FindProcShort (myGlCore20, glUniform2f) | |
698 | || !FindProcShort (myGlCore20, glUniform3f) | |
699 | || !FindProcShort (myGlCore20, glUniform4f) | |
700 | || !FindProcShort (myGlCore20, glUniform1i) | |
701 | || !FindProcShort (myGlCore20, glUniform2i) | |
702 | || !FindProcShort (myGlCore20, glUniform3i) | |
703 | || !FindProcShort (myGlCore20, glUniform4i) | |
704 | || !FindProcShort (myGlCore20, glUniform1fv) | |
705 | || !FindProcShort (myGlCore20, glUniform2fv) | |
706 | || !FindProcShort (myGlCore20, glUniform3fv) | |
707 | || !FindProcShort (myGlCore20, glUniform4fv) | |
708 | || !FindProcShort (myGlCore20, glUniform1iv) | |
709 | || !FindProcShort (myGlCore20, glUniform2iv) | |
710 | || !FindProcShort (myGlCore20, glUniform3iv) | |
711 | || !FindProcShort (myGlCore20, glUniform4iv) | |
712 | || !FindProcShort (myGlCore20, glUniformMatrix2fv) | |
713 | || !FindProcShort (myGlCore20, glUniformMatrix3fv) | |
714 | || !FindProcShort (myGlCore20, glUniformMatrix4fv) | |
715 | || !FindProcShort (myGlCore20, glValidateProgram) | |
716 | || !FindProcShort (myGlCore20, glVertexAttrib1d) | |
717 | || !FindProcShort (myGlCore20, glVertexAttrib1dv) | |
718 | || !FindProcShort (myGlCore20, glVertexAttrib1f) | |
719 | || !FindProcShort (myGlCore20, glVertexAttrib1fv) | |
720 | || !FindProcShort (myGlCore20, glVertexAttrib1s) | |
721 | || !FindProcShort (myGlCore20, glVertexAttrib1sv) | |
722 | || !FindProcShort (myGlCore20, glVertexAttrib2d) | |
723 | || !FindProcShort (myGlCore20, glVertexAttrib2dv) | |
724 | || !FindProcShort (myGlCore20, glVertexAttrib2f) | |
725 | || !FindProcShort (myGlCore20, glVertexAttrib2fv) | |
726 | || !FindProcShort (myGlCore20, glVertexAttrib2s) | |
727 | || !FindProcShort (myGlCore20, glVertexAttrib2sv) | |
728 | || !FindProcShort (myGlCore20, glVertexAttrib3d) | |
729 | || !FindProcShort (myGlCore20, glVertexAttrib3dv) | |
730 | || !FindProcShort (myGlCore20, glVertexAttrib3f) | |
731 | || !FindProcShort (myGlCore20, glVertexAttrib3fv) | |
732 | || !FindProcShort (myGlCore20, glVertexAttrib3s) | |
733 | || !FindProcShort (myGlCore20, glVertexAttrib3sv) | |
734 | || !FindProcShort (myGlCore20, glVertexAttrib4Nbv) | |
735 | || !FindProcShort (myGlCore20, glVertexAttrib4Niv) | |
736 | || !FindProcShort (myGlCore20, glVertexAttrib4Nsv) | |
737 | || !FindProcShort (myGlCore20, glVertexAttrib4Nub) | |
738 | || !FindProcShort (myGlCore20, glVertexAttrib4Nubv) | |
739 | || !FindProcShort (myGlCore20, glVertexAttrib4Nuiv) | |
740 | || !FindProcShort (myGlCore20, glVertexAttrib4Nusv) | |
741 | || !FindProcShort (myGlCore20, glVertexAttrib4bv) | |
742 | || !FindProcShort (myGlCore20, glVertexAttrib4d) | |
743 | || !FindProcShort (myGlCore20, glVertexAttrib4dv) | |
744 | || !FindProcShort (myGlCore20, glVertexAttrib4f) | |
745 | || !FindProcShort (myGlCore20, glVertexAttrib4fv) | |
746 | || !FindProcShort (myGlCore20, glVertexAttrib4iv) | |
747 | || !FindProcShort (myGlCore20, glVertexAttrib4s) | |
748 | || !FindProcShort (myGlCore20, glVertexAttrib4sv) | |
749 | || !FindProcShort (myGlCore20, glVertexAttrib4ubv) | |
750 | || !FindProcShort (myGlCore20, glVertexAttrib4uiv) | |
751 | || !FindProcShort (myGlCore20, glVertexAttrib4usv) | |
752 | || !FindProcShort (myGlCore20, glVertexAttribPointer)) | |
753 | { | |
754 | myGlVerMajor = 1; | |
755 | myGlVerMinor = 5; | |
756 | core12 = myGlCore20; | |
757 | core13 = myGlCore20; | |
758 | core14 = myGlCore20; | |
759 | core15 = myGlCore20; | |
760 | } | |
761 | } | |
762 | ||
2bd4c032 | 763 | if (IsGlGreaterEqual (2, 0)) |
5f8b738e | 764 | { |
765 | core12 = myGlCore20; | |
766 | core13 = myGlCore20; | |
767 | core14 = myGlCore20; | |
768 | core15 = myGlCore20; | |
769 | core20 = myGlCore20; | |
770 | } | |
2166f0fa | 771 | } |
664cae74 | 772 | // ======================================================================= |
773 | // function : IsFeedback | |
774 | // purpose : | |
775 | // ======================================================================= | |
776 | Standard_Boolean OpenGl_Context::IsFeedback() const | |
777 | { | |
778 | return myIsFeedback; | |
779 | } | |
780 | ||
781 | // ======================================================================= | |
782 | // function : SetFeedback | |
783 | // purpose : | |
784 | // ======================================================================= | |
785 | void OpenGl_Context::SetFeedback (const Standard_Boolean theFeedbackOn) | |
786 | { | |
787 | myIsFeedback = theFeedbackOn; | |
788 | } | |
f0430952 | 789 | |
790 | // ======================================================================= | |
791 | // function : MemoryInfo | |
792 | // purpose : | |
793 | // ======================================================================= | |
794 | Standard_Size OpenGl_Context::AvailableMemory() const | |
795 | { | |
796 | if (atiMem) | |
797 | { | |
798 | // this is actually information for VBO pool | |
799 | // however because pools are mostly shared | |
800 | // it can be used for total GPU memory estimations | |
801 | GLint aMemInfo[4]; | |
802 | aMemInfo[0] = 0; | |
803 | glGetIntegerv (GL_VBO_FREE_MEMORY_ATI, aMemInfo); | |
804 | // returned value is in KiB, however this maybe changed in future | |
805 | return Standard_Size(aMemInfo[0]) * 1024; | |
806 | } | |
807 | else if (nvxMem) | |
808 | { | |
809 | // current available dedicated video memory (in KiB), currently unused GPU memory | |
810 | GLint aMemInfo = 0; | |
811 | glGetIntegerv (GL_GPU_MEMORY_INFO_CURRENT_AVAILABLE_VIDMEM_NVX, &aMemInfo); | |
812 | return Standard_Size(aMemInfo) * 1024; | |
813 | } | |
814 | return 0; | |
815 | } | |
816 | ||
817 | // ======================================================================= | |
818 | // function : MemoryInfo | |
819 | // purpose : | |
820 | // ======================================================================= | |
821 | TCollection_AsciiString OpenGl_Context::MemoryInfo() const | |
822 | { | |
823 | TCollection_AsciiString anInfo; | |
824 | if (atiMem) | |
825 | { | |
826 | GLint aValues[4]; | |
827 | memset (aValues, 0, sizeof(aValues)); | |
828 | glGetIntegerv (GL_VBO_FREE_MEMORY_ATI, aValues); | |
829 | ||
830 | // total memory free in the pool | |
831 | anInfo += TCollection_AsciiString (" GPU free memory: ") + (aValues[0] / 1024) + " MiB\n"; | |
832 | ||
833 | // largest available free block in the pool | |
834 | anInfo += TCollection_AsciiString (" Largest free block: ") + (aValues[1] / 1024) + " MiB\n"; | |
835 | if (aValues[2] != aValues[0]) | |
836 | { | |
837 | // total auxiliary memory free | |
838 | anInfo += TCollection_AsciiString (" Free memory: ") + (aValues[2] / 1024) + " MiB\n"; | |
839 | } | |
840 | } | |
841 | else if (nvxMem) | |
842 | { | |
843 | //current available dedicated video memory (in KiB), currently unused GPU memory | |
844 | GLint aValue = 0; | |
845 | glGetIntegerv (GL_GPU_MEMORY_INFO_CURRENT_AVAILABLE_VIDMEM_NVX, &aValue); | |
846 | anInfo += TCollection_AsciiString (" GPU free memory: ") + (aValue / 1024) + " MiB\n"; | |
847 | ||
848 | // dedicated video memory, total size (in KiB) of the GPU memory | |
849 | GLint aDedicated = 0; | |
850 | glGetIntegerv (GL_GPU_MEMORY_INFO_DEDICATED_VIDMEM_NVX, &aDedicated); | |
851 | anInfo += TCollection_AsciiString (" GPU memory: ") + (aDedicated / 1024) + " MiB\n"; | |
852 | ||
853 | // total available memory, total size (in KiB) of the memory available for allocations | |
854 | glGetIntegerv (GL_GPU_MEMORY_INFO_TOTAL_AVAILABLE_MEMORY_NVX, &aValue); | |
855 | if (aValue != aDedicated) | |
856 | { | |
857 | // different only for special configurations | |
858 | anInfo += TCollection_AsciiString (" Total memory: ") + (aValue / 1024) + " MiB\n"; | |
859 | } | |
860 | } | |
861 | return anInfo; | |
862 | } | |
5e27df78 | 863 | |
864 | ||
865 | // ======================================================================= | |
866 | // function : GetResource | |
867 | // purpose : | |
868 | // ======================================================================= | |
869 | const Handle(OpenGl_Resource)& OpenGl_Context::GetResource (const TCollection_AsciiString& theKey) const | |
870 | { | |
871 | return mySharedResources->IsBound (theKey) ? mySharedResources->Find (theKey) : NULL_GL_RESOURCE; | |
872 | } | |
873 | ||
874 | // ======================================================================= | |
875 | // function : ShareResource | |
876 | // purpose : | |
877 | // ======================================================================= | |
878 | Standard_Boolean OpenGl_Context::ShareResource (const TCollection_AsciiString& theKey, | |
879 | const Handle(OpenGl_Resource)& theResource) | |
880 | { | |
881 | if (theKey.IsEmpty() || theResource.IsNull()) | |
882 | { | |
883 | return Standard_False; | |
884 | } | |
885 | return mySharedResources->Bind (theKey, theResource); | |
886 | } | |
887 | ||
888 | // ======================================================================= | |
889 | // function : ReleaseResource | |
890 | // purpose : | |
891 | // ======================================================================= | |
892 | void OpenGl_Context::ReleaseResource (const TCollection_AsciiString& theKey) | |
893 | { | |
894 | if (!mySharedResources->IsBound (theKey)) | |
895 | { | |
896 | return; | |
897 | } | |
898 | const Handle(OpenGl_Resource)& aRes = mySharedResources->Find (theKey); | |
899 | if (aRes->GetRefCount() > 1) | |
900 | { | |
901 | return; | |
902 | } | |
903 | ||
904 | aRes->Release (this); | |
905 | mySharedResources->UnBind (theKey); | |
906 | } | |
907 | ||
908 | // ======================================================================= | |
909 | // function : DelayedRelease | |
910 | // purpose : | |
911 | // ======================================================================= | |
912 | void OpenGl_Context::DelayedRelease (Handle(OpenGl_Resource)& theResource) | |
913 | { | |
914 | myReleaseQueue->Push (theResource); | |
915 | theResource.Nullify(); | |
916 | } | |
917 | ||
918 | // ======================================================================= | |
919 | // function : ReleaseDelayed | |
920 | // purpose : | |
921 | // ======================================================================= | |
922 | void OpenGl_Context::ReleaseDelayed() | |
923 | { | |
924 | while (!myReleaseQueue->IsEmpty()) | |
925 | { | |
926 | myReleaseQueue->Front()->Release (this); | |
927 | myReleaseQueue->Pop(); | |
928 | } | |
929 | } |