1 // Created on: 2012-01-26
2 // Created by: Kirill GAVRILOV
3 // Copyright (c) 2012-2014 OPEN CASCADE SAS
5 // This file is part of Open CASCADE Technology software library.
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
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.
13 // Alternatively, this file may be used under the terms of Open CASCADE
14 // commercial license or contractual agreement.
20 #include <OpenGl_Context.hxx>
22 #include <OpenGl_ArbTBO.hxx>
23 #include <OpenGl_ArbIns.hxx>
24 #include <OpenGl_ArbDbg.hxx>
25 #include <OpenGl_ArbFBO.hxx>
26 #include <OpenGl_ExtGS.hxx>
27 #include <OpenGl_ArbTexBindless.hxx>
28 #include <OpenGl_GlCore44.hxx>
29 #include <OpenGl_FrameBuffer.hxx>
30 #include <OpenGl_Sampler.hxx>
31 #include <OpenGl_ShaderManager.hxx>
32 #include <OpenGl_Workspace.hxx>
33 #include <OpenGl_AspectFace.hxx>
34 #include <Graphic3d_TransformUtils.hxx>
35 #include <Graphic3d_RenderingParams.hxx>
37 #include <Message_Messenger.hxx>
39 #include <NCollection_Vector.hxx>
41 #include <Standard_ProgramError.hxx>
43 IMPLEMENT_STANDARD_RTTIEXT(OpenGl_Context,Standard_Transient)
48 #pragma comment(lib, "libEGL.lib")
52 #elif defined(__APPLE__) && !defined(MACOSX_USE_GLX)
54 #if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE
57 #include <OpenGL/OpenGL.h>
58 #include <CoreGraphics/CoreGraphics.h>
61 #include <GL/glx.h> // glXGetProcAddress()
67 #pragma comment (lib, "gl2ps.lib")
74 static const Handle(OpenGl_Resource) NULL_GL_RESOURCE;
75 static const OpenGl_Mat4 THE_IDENTITY_MATRIX;
77 //! Add key-value pair to the dictionary.
78 static void addInfo (TColStd_IndexedDataMapOfStringString& theDict,
79 const TCollection_AsciiString& theKey,
80 const TCollection_AsciiString& theValue)
82 theDict.ChangeFromIndex (theDict.Add (theKey, theValue)) = theValue;
85 //! Add key-value pair to the dictionary.
86 static void addInfo (TColStd_IndexedDataMapOfStringString& theDict,
87 const TCollection_AsciiString& theKey,
90 TCollection_AsciiString aValue (theValue != NULL ? theValue : "");
91 theDict.ChangeFromIndex (theDict.Add (theKey, aValue)) = aValue;
95 // =======================================================================
96 // function : OpenGl_Context
98 // =======================================================================
99 OpenGl_Context::OpenGl_Context (const Handle(OpenGl_Caps)& theCaps)
118 caps (!theCaps.IsNull() ? theCaps : new OpenGl_Caps()),
119 #if defined(GL_ES_VERSION_2_0)
120 hasHighp (Standard_False),
121 hasUintIndex(Standard_False),
122 hasTexRGBA8(Standard_False),
124 hasHighp (Standard_True),
125 hasUintIndex(Standard_True),
126 hasTexRGBA8(Standard_True),
128 arbNPTW (Standard_False),
129 arbTexRG (Standard_False),
130 arbTexFloat (Standard_False),
131 arbTexBindless (NULL),
133 arbTboRGB32 (Standard_False),
138 extFragDepth (Standard_False),
140 extBgra(Standard_False),
141 extAnis(Standard_False),
142 extPDS (Standard_False),
143 atiMem (Standard_False),
144 nvxMem (Standard_False),
145 mySharedResources (new OpenGl_ResourcesMap()),
146 myDelayed (new OpenGl_DelayReleaseMap()),
147 myUnusedResources (new OpenGl_ResourcesStack()),
149 myGlLibHandle (NULL),
150 myFuncs (new OpenGl_GlFunctions()),
152 myTexClamp (GL_CLAMP_TO_EDGE),
158 myIsInitialized (Standard_False),
159 myIsStereoBuffers (Standard_False),
160 myIsGlNormalizeEnabled (Standard_False),
161 myHasRayTracing (Standard_False),
162 myHasRayTracingTextures (Standard_False),
163 myHasRayTracingAdaptiveSampling (Standard_False),
164 #if !defined(GL_ES_VERSION_2_0)
165 myPointSpriteOrig (GL_UPPER_LEFT),
166 myRenderMode (GL_RENDER),
167 myPolygonMode (GL_FILL),
169 myPointSpriteOrig (0),
173 myToCullBackFaces (false),
177 myIsGlDebugCtx (Standard_False),
178 myResolution (Graphic3d_RenderingParams::THE_DEFAULT_RESOLUTION),
179 myResolutionRatio (1.0f),
180 myLineWidthScale (1.0f),
181 myRenderScale (1.0f),
182 myRenderScaleInv (1.0f)
188 myViewportVirt[0] = 0;
189 myViewportVirt[1] = 0;
190 myViewportVirt[2] = 0;
191 myViewportVirt[3] = 0;
193 // system-dependent fields
194 #if defined(HAVE_EGL)
195 myDisplay = (Aspect_Display )EGL_NO_DISPLAY;
196 myWindow = (Aspect_Drawable )EGL_NO_SURFACE;
197 myGContext = (Aspect_RenderingContext )EGL_NO_CONTEXT;
198 #elif defined(_WIN32)
202 #elif defined(__APPLE__) && !defined(MACOSX_USE_GLX)
203 // Vendors can not extend functionality on this system
204 // and developers are limited to OpenGL support provided by Mac OS X SDK.
205 // We retrieve function pointers from system library
206 // to generalize extensions support on all platforms.
207 // In this way we also reach binary compatibility benefit between OS releases
208 // if some newest functionality is optionally used.
209 // Notice that GL version / extension availability checks are required
210 // because function pointers may be available but not functionality itself
211 // (depends on renderer).
212 #if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE
214 myGlLibHandle = dlopen ("/System/Library/Frameworks/OpenGLES.framework/OpenGLES", RTLD_LAZY);
217 myGlLibHandle = dlopen ("/System/Library/Frameworks/OpenGL.framework/Versions/Current/OpenGL", RTLD_LAZY);
225 memset (myFuncs.operator->(), 0, sizeof(OpenGl_GlFunctions));
226 myShaderManager = new OpenGl_ShaderManager (this);
229 // =======================================================================
230 // function : ~OpenGl_Context
232 // =======================================================================
233 OpenGl_Context::~OpenGl_Context()
235 // release clean up queue
238 #if !defined(GL_ES_VERSION_2_0)
239 // release default VAO
240 if (myDefaultVao != 0
244 core32->glDeleteVertexArrays (1, &myDefaultVao);
249 // release default FBO
250 if (!myDefaultFbo.IsNull())
252 myDefaultFbo->Release (this);
253 myDefaultFbo.Nullify();
256 // release shared resources if any
257 if (mySharedResources->GetRefCount() <= 1)
259 myShaderManager.Nullify();
260 for (NCollection_DataMap<TCollection_AsciiString, Handle(OpenGl_Resource)>::Iterator anIter (*mySharedResources);
261 anIter.More(); anIter.Next())
263 anIter.Value()->Release (this);
266 // release delayed resources added during deletion of shared resources
267 while (!myUnusedResources->IsEmpty())
269 myUnusedResources->First()->Release (this);
270 myUnusedResources->RemoveFirst();
273 else if (myShaderManager->IsSameContext (this))
275 myShaderManager->SetContext (NULL);
277 mySharedResources.Nullify();
280 // release sampler object
281 if (!myTexSampler.IsNull())
283 myTexSampler->Release (this);
291 #if !defined(GL_ES_VERSION_2_0)
293 glGetPointerv (GL_DEBUG_CALLBACK_USER_PARAM, &aPtr);
297 arbDbg->glDebugMessageCallback (NULL, NULL);
299 myIsGlDebugCtx = Standard_False;
303 // =======================================================================
304 // function : forcedRelease
306 // =======================================================================
307 void OpenGl_Context::forcedRelease()
310 for (NCollection_DataMap<TCollection_AsciiString, Handle(OpenGl_Resource)>::Iterator anIter (*mySharedResources);
311 anIter.More(); anIter.Next())
313 anIter.Value()->Release (this);
315 mySharedResources->Clear();
316 myShaderManager->clear();
317 myShaderManager->SetContext (NULL);
319 // release delayed resources added during deletion of shared resources
320 while (!myUnusedResources->IsEmpty())
322 myUnusedResources->First()->Release (this);
323 myUnusedResources->RemoveFirst();
327 // =======================================================================
328 // function : ResizeViewport
330 // =======================================================================
331 void OpenGl_Context::ResizeViewport (const Standard_Integer* theRect)
333 core11fwd->glViewport (theRect[0], theRect[1], theRect[2], theRect[3]);
334 myViewport[0] = theRect[0];
335 myViewport[1] = theRect[1];
336 myViewport[2] = theRect[2];
337 myViewport[3] = theRect[3];
338 if (HasRenderScale())
340 myViewportVirt[0] = Standard_Integer(theRect[0] * myRenderScaleInv);
341 myViewportVirt[1] = Standard_Integer(theRect[1] * myRenderScaleInv);
342 myViewportVirt[2] = Standard_Integer(theRect[2] * myRenderScaleInv);
343 myViewportVirt[3] = Standard_Integer(theRect[3] * myRenderScaleInv);
347 myViewportVirt[0] = theRect[0];
348 myViewportVirt[1] = theRect[1];
349 myViewportVirt[2] = theRect[2];
350 myViewportVirt[3] = theRect[3];
354 #if !defined(GL_ES_VERSION_2_0)
355 inline Standard_Integer stereoToMonoBuffer (const Standard_Integer theBuffer)
371 // =======================================================================
372 // function : SetReadBuffer
374 // =======================================================================
375 void OpenGl_Context::SetReadBuffer (const Standard_Integer theReadBuffer)
377 #if !defined(GL_ES_VERSION_2_0)
378 myReadBuffer = !myIsStereoBuffers ? stereoToMonoBuffer (theReadBuffer) : theReadBuffer;
379 if (myReadBuffer < GL_COLOR_ATTACHMENT0
382 arbFBO->glBindFramebuffer (GL_FRAMEBUFFER, OpenGl_FrameBuffer::NO_FRAMEBUFFER);
384 ::glReadBuffer (myReadBuffer);
386 (void )theReadBuffer;
390 // =======================================================================
391 // function : SetDrawBuffer
393 // =======================================================================
394 void OpenGl_Context::SetDrawBuffer (const Standard_Integer theDrawBuffer)
396 #if !defined(GL_ES_VERSION_2_0)
397 myDrawBuffer = !myIsStereoBuffers ? stereoToMonoBuffer (theDrawBuffer) : theDrawBuffer;
398 if (myDrawBuffer < GL_COLOR_ATTACHMENT0
401 arbFBO->glBindFramebuffer (GL_FRAMEBUFFER, OpenGl_FrameBuffer::NO_FRAMEBUFFER);
403 ::glDrawBuffer (myDrawBuffer);
405 (void )theDrawBuffer;
409 // =======================================================================
410 // function : SetCullBackFaces
412 // =======================================================================
413 void OpenGl_Context::SetCullBackFaces (bool theToEnable)
415 if (myToCullBackFaces == theToEnable)
420 myToCullBackFaces = theToEnable;
423 //glCullFace (GL_BACK); GL_BACK by default
424 core11fwd->glEnable (GL_CULL_FACE);
428 core11fwd->glDisable (GL_CULL_FACE);
432 // =======================================================================
433 // function : FetchState
435 // =======================================================================
436 void OpenGl_Context::FetchState()
438 #if !defined(GL_ES_VERSION_2_0)
439 // cache feedback mode state
442 ::glGetIntegerv (GL_RENDER_MODE, &myRenderMode);
445 // cache buffers state
446 ::glGetIntegerv (GL_READ_BUFFER, &myReadBuffer);
447 ::glGetIntegerv (GL_DRAW_BUFFER, &myDrawBuffer);
451 // =======================================================================
454 // =======================================================================
455 void OpenGl_Context::Share (const Handle(OpenGl_Context)& theShareCtx)
457 if (!theShareCtx.IsNull())
459 mySharedResources = theShareCtx->mySharedResources;
460 myDelayed = theShareCtx->myDelayed;
461 myUnusedResources = theShareCtx->myUnusedResources;
462 myShaderManager = theShareCtx->myShaderManager;
466 #if !defined(__APPLE__) || defined(MACOSX_USE_GLX)
468 // =======================================================================
469 // function : IsCurrent
471 // =======================================================================
472 Standard_Boolean OpenGl_Context::IsCurrent() const
474 #if defined(HAVE_EGL)
475 if ((EGLDisplay )myDisplay == EGL_NO_DISPLAY
476 || (EGLSurface )myWindow == EGL_NO_SURFACE
477 || (EGLContext )myGContext == EGL_NO_CONTEXT)
479 return Standard_False;
482 return (((EGLDisplay )myDisplay == eglGetCurrentDisplay())
483 && ((EGLContext )myGContext == eglGetCurrentContext())
484 && ((EGLSurface )myWindow == eglGetCurrentSurface (EGL_DRAW)));
485 #elif defined(_WIN32)
486 if (myWindowDC == NULL || myGContext == NULL)
488 return Standard_False;
490 return (( (HDC )myWindowDC == wglGetCurrentDC())
491 && ((HGLRC )myGContext == wglGetCurrentContext()));
493 if (myDisplay == NULL || myWindow == 0 || myGContext == 0)
495 return Standard_False;
498 return ( ((Display* )myDisplay == glXGetCurrentDisplay())
499 && ((GLXContext )myGContext == glXGetCurrentContext())
500 && ((GLXDrawable )myWindow == glXGetCurrentDrawable()));
504 // =======================================================================
505 // function : MakeCurrent
507 // =======================================================================
508 Standard_Boolean OpenGl_Context::MakeCurrent()
510 #if defined(HAVE_EGL)
511 if ((EGLDisplay )myDisplay == EGL_NO_DISPLAY
512 || (EGLSurface )myWindow == EGL_NO_SURFACE
513 || (EGLContext )myGContext == EGL_NO_CONTEXT)
515 Standard_ProgramError_Raise_if (myIsInitialized, "OpenGl_Context::Init() should be called before!");
516 return Standard_False;
519 if (eglMakeCurrent ((EGLDisplay )myDisplay, (EGLSurface )myWindow, (EGLSurface )myWindow, (EGLContext )myGContext) != EGL_TRUE)
521 // if there is no current context it might be impossible to use glGetError() correctly
522 PushMessage (GL_DEBUG_SOURCE_WINDOW_SYSTEM, GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH,
523 "eglMakeCurrent() has failed!");
524 myIsInitialized = Standard_False;
525 return Standard_False;
527 #elif defined(_WIN32)
528 if (myWindowDC == NULL || myGContext == NULL)
530 Standard_ProgramError_Raise_if (myIsInitialized, "OpenGl_Context::Init() should be called before!");
531 return Standard_False;
534 // technically it should be safe to activate already bound GL context
535 // however some drivers (Intel etc.) may FAIL doing this for unknown reason
538 myShaderManager->SetContext (this);
539 return Standard_True;
541 else if (wglMakeCurrent ((HDC )myWindowDC, (HGLRC )myGContext) != TRUE)
543 // notice that glGetError() couldn't be used here!
544 wchar_t* aMsgBuff = NULL;
545 DWORD anErrorCode = GetLastError();
546 FormatMessageW (FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
547 NULL, anErrorCode, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (wchar_t* )&aMsgBuff, 0, NULL);
548 TCollection_ExtendedString aMsg ("wglMakeCurrent() has failed. ");
549 if (aMsgBuff != NULL)
551 aMsg += (Standard_ExtString )aMsgBuff;
552 LocalFree (aMsgBuff);
554 PushMessage (GL_DEBUG_SOURCE_WINDOW_SYSTEM, GL_DEBUG_TYPE_ERROR, (unsigned int )anErrorCode, GL_DEBUG_SEVERITY_HIGH, aMsg);
555 myIsInitialized = Standard_False;
556 return Standard_False;
559 if (myDisplay == NULL || myWindow == 0 || myGContext == 0)
561 Standard_ProgramError_Raise_if (myIsInitialized, "OpenGl_Context::Init() should be called before!");
562 return Standard_False;
565 if (!glXMakeCurrent ((Display* )myDisplay, (GLXDrawable )myWindow, (GLXContext )myGContext))
567 // if there is no current context it might be impossible to use glGetError() correctly
568 PushMessage (GL_DEBUG_SOURCE_WINDOW_SYSTEM, GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH,
569 "glXMakeCurrent() has failed!");
570 myIsInitialized = Standard_False;
571 return Standard_False;
574 myShaderManager->SetContext (this);
575 return Standard_True;
578 // =======================================================================
579 // function : SwapBuffers
581 // =======================================================================
582 void OpenGl_Context::SwapBuffers()
584 #if defined(HAVE_EGL)
585 if ((EGLSurface )myWindow != EGL_NO_SURFACE)
587 eglSwapBuffers ((EGLDisplay )myDisplay, (EGLSurface )myWindow);
589 #elif defined(_WIN32)
590 if ((HDC )myWindowDC != NULL)
592 ::SwapBuffers ((HDC )myWindowDC);
596 if ((Display* )myDisplay != NULL)
598 glXSwapBuffers ((Display* )myDisplay, (GLXDrawable )myWindow);
605 // =======================================================================
606 // function : SetSwapInterval
608 // =======================================================================
609 Standard_Boolean OpenGl_Context::SetSwapInterval (const Standard_Integer theInterval)
611 #if defined(HAVE_EGL)
612 if (::eglSwapInterval ((EGLDisplay )myDisplay, theInterval) == EGL_TRUE)
614 return Standard_True;
616 #elif defined(_WIN32)
617 if (myFuncs->wglSwapIntervalEXT != NULL)
619 myFuncs->wglSwapIntervalEXT (theInterval);
620 return Standard_True;
622 #elif defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE
624 #elif defined(__APPLE__)
625 if (::CGLSetParameter (CGLGetCurrentContext(), kCGLCPSwapInterval, &theInterval) == kCGLNoError)
627 return Standard_True;
630 if (theInterval == -1
631 && myFuncs->glXSwapIntervalEXT != NULL)
633 typedef int (*glXSwapIntervalEXT_t_x)(Display* theDisplay, GLXDrawable theDrawable, int theInterval);
634 glXSwapIntervalEXT_t_x aFuncPtr = (glXSwapIntervalEXT_t_x )myFuncs->glXSwapIntervalEXT;
635 aFuncPtr ((Display* )myDisplay, (GLXDrawable )myWindow, theInterval);
636 return Standard_True;
638 else if (myFuncs->glXSwapIntervalSGI != NULL)
640 myFuncs->glXSwapIntervalSGI (theInterval);
641 return Standard_True;
644 return Standard_False;
647 // =======================================================================
648 // function : findProc
650 // =======================================================================
651 void* OpenGl_Context::findProc (const char* theFuncName)
653 #if defined(HAVE_EGL)
654 return (void* )eglGetProcAddress (theFuncName);
655 #elif defined(_WIN32)
656 return (void* )wglGetProcAddress (theFuncName);
657 #elif defined(__APPLE__) && !defined(MACOSX_USE_GLX)
658 return (myGlLibHandle != NULL) ? dlsym (myGlLibHandle, theFuncName) : NULL;
660 return (void* )glXGetProcAddress ((const GLubyte* )theFuncName);
664 // =======================================================================
665 // function : CheckExtension
667 // =======================================================================
668 Standard_Boolean OpenGl_Context::CheckExtension (const char* theExtName) const
670 if (theExtName == NULL)
673 std::cerr << "CheckExtension called with NULL string!\n";
675 return Standard_False;
678 #if !defined(GL_ES_VERSION_2_0)
679 // available since OpenGL 3.0
680 // and the ONLY way to check extensions with OpenGL 3.1+ core profile
681 if (IsGlGreaterEqual (3, 0)
682 && myFuncs->glGetStringi != NULL)
685 ::glGetIntegerv (GL_NUM_EXTENSIONS, &anExtNb);
686 const size_t anExtNameLen = strlen (theExtName);
687 for (GLint anIter = 0; anIter < anExtNb; ++anIter)
689 const char* anExtension = (const char* )myFuncs->glGetStringi (GL_EXTENSIONS, (GLuint )anIter);
690 const size_t aTestExtNameLen = strlen (anExtension);
691 if (aTestExtNameLen == anExtNameLen
692 && strncmp (anExtension, theExtName, anExtNameLen) == 0)
694 return Standard_True;
697 return Standard_False;
701 // use old way with huge string for all extensions
702 const char* anExtString = (const char* )glGetString (GL_EXTENSIONS);
703 if (anExtString == NULL)
705 Messenger()->Send ("TKOpenGL: glGetString (GL_EXTENSIONS) has returned NULL! No GL context?", Message_Warning);
706 return Standard_False;
708 return CheckExtension (anExtString, theExtName);
711 // =======================================================================
712 // function : CheckExtension
714 // =======================================================================
715 Standard_Boolean OpenGl_Context::CheckExtension (const char* theExtString,
716 const char* theExtName)
718 if (theExtString == NULL)
720 return Standard_False;
723 // Search for theExtName in the extensions string.
724 // Use of strstr() is not sufficient because extension names can be prefixes of other extension names.
725 char* aPtrIter = (char* )theExtString;
726 const char* aPtrEnd = aPtrIter + strlen (theExtString);
727 const size_t anExtNameLen = strlen (theExtName);
728 while (aPtrIter < aPtrEnd)
730 const size_t n = strcspn (aPtrIter, " ");
731 if ((n == anExtNameLen) && (strncmp (aPtrIter, theExtName, anExtNameLen) == 0))
733 return Standard_True;
737 return Standard_False;
740 #if !defined(__APPLE__) || defined(MACOSX_USE_GLX)
742 // =======================================================================
745 // =======================================================================
746 Standard_Boolean OpenGl_Context::Init (const Standard_Boolean theIsCoreProfile)
750 return Standard_True;
753 #if defined(HAVE_EGL)
754 myDisplay = (Aspect_Display )eglGetCurrentDisplay();
755 myGContext = (Aspect_RenderingContext )eglGetCurrentContext();
756 myWindow = (Aspect_Drawable )eglGetCurrentSurface(EGL_DRAW);
757 #elif defined(_WIN32)
758 myWindowDC = (Aspect_Handle )wglGetCurrentDC();
759 myGContext = (Aspect_RenderingContext )wglGetCurrentContext();
761 myDisplay = (Aspect_Display )glXGetCurrentDisplay();
762 myGContext = (Aspect_RenderingContext )glXGetCurrentContext();
763 myWindow = (Aspect_Drawable )glXGetCurrentDrawable();
765 if (myGContext == NULL)
767 return Standard_False;
770 init (theIsCoreProfile);
771 myIsInitialized = Standard_True;
772 return Standard_True;
777 // =======================================================================
780 // =======================================================================
781 #if defined(HAVE_EGL)
782 Standard_Boolean OpenGl_Context::Init (const Aspect_Drawable theEglSurface,
783 const Aspect_Display theEglDisplay,
784 const Aspect_RenderingContext theEglContext,
785 const Standard_Boolean theIsCoreProfile)
786 #elif defined(_WIN32)
787 Standard_Boolean OpenGl_Context::Init (const Aspect_Handle theWindow,
788 const Aspect_Handle theWindowDC,
789 const Aspect_RenderingContext theGContext,
790 const Standard_Boolean theIsCoreProfile)
791 #elif defined(__APPLE__) && !defined(MACOSX_USE_GLX)
793 #if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE
794 Standard_Boolean OpenGl_Context::Init (EAGLContext* theGContext,
795 const Standard_Boolean theIsCoreProfile)
797 Standard_Boolean OpenGl_Context::Init (NSOpenGLContext* theGContext,
798 const Standard_Boolean theIsCoreProfile)
802 Standard_Boolean OpenGl_Context::Init (const Aspect_Drawable theWindow,
803 const Aspect_Display theDisplay,
804 const Aspect_RenderingContext theGContext,
805 const Standard_Boolean theIsCoreProfile)
808 Standard_ProgramError_Raise_if (myIsInitialized, "OpenGl_Context::Init() should be called only once!");
809 #if defined(HAVE_EGL)
810 myWindow = theEglSurface;
811 myGContext = theEglContext;
812 myDisplay = theEglDisplay;
813 #elif defined(_WIN32)
814 myWindow = theWindow;
815 myGContext = theGContext;
816 myWindowDC = theWindowDC;
817 #elif defined(__APPLE__) && !defined(MACOSX_USE_GLX)
818 myGContext = theGContext;
820 myWindow = theWindow;
821 myGContext = theGContext;
822 myDisplay = theDisplay;
824 if (myGContext == NULL || !MakeCurrent())
826 return Standard_False;
829 init (theIsCoreProfile);
830 myIsInitialized = Standard_True;
831 return Standard_True;
834 // =======================================================================
835 // function : ResetErrors
837 // =======================================================================
838 bool OpenGl_Context::ResetErrors (const bool theToPrintErrors)
841 int anErr = ::glGetError();
842 const bool hasError = anErr != GL_NO_ERROR;
843 if (!theToPrintErrors)
845 for (; anErr != GL_NO_ERROR && aPrevErr != anErr; aPrevErr = anErr, anErr = ::glGetError())
852 for (; anErr != GL_NO_ERROR && aPrevErr != anErr; aPrevErr = anErr, anErr = ::glGetError())
854 TCollection_ExtendedString anErrId;
857 case GL_INVALID_ENUM: anErrId = "GL_INVALID_ENUM"; break;
858 case GL_INVALID_VALUE: anErrId = "GL_INVALID_VALUE"; break;
859 case GL_INVALID_OPERATION: anErrId = "GL_INVALID_OPERATION"; break;
860 #ifdef GL_STACK_OVERFLOW
861 case GL_STACK_OVERFLOW: anErrId = "GL_STACK_OVERFLOW"; break;
862 case GL_STACK_UNDERFLOW: anErrId = "GL_STACK_UNDERFLOW"; break;
864 case GL_OUT_OF_MEMORY: anErrId = "GL_OUT_OF_MEMORY"; break;
865 case GL_INVALID_FRAMEBUFFER_OPERATION:
866 anErrId = "GL_INVALID_FRAMEBUFFER_OPERATION";
869 anErrId = TCollection_ExtendedString("#") + anErr;
873 const TCollection_ExtendedString aMsg = TCollection_ExtendedString ("Unhandled GL error: ") + anErrId;
874 PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_OTHER, 0, GL_DEBUG_SEVERITY_LOW, aMsg);
879 // =======================================================================
880 // function : ReadGlVersion
882 // =======================================================================
883 void OpenGl_Context::ReadGlVersion (Standard_Integer& theGlVerMajor,
884 Standard_Integer& theGlVerMinor)
890 #ifdef GL_MAJOR_VERSION
891 // available since OpenGL 3.0 and OpenGL 3.0 ES
892 GLint aMajor = 0, aMinor = 0;
893 glGetIntegerv (GL_MAJOR_VERSION, &aMajor);
894 glGetIntegerv (GL_MINOR_VERSION, &aMinor);
895 // glGetError() sometimes does not report an error here even if
896 // GL does not know GL_MAJOR_VERSION and GL_MINOR_VERSION constants.
897 // This happens on some renderers like e.g. Cygwin MESA.
898 // Thus checking additionally if GL has put anything to
899 // the output variables.
900 if (::glGetError() == GL_NO_ERROR && aMajor != 0 && aMinor != 0)
902 theGlVerMajor = aMajor;
903 theGlVerMinor = aMinor;
906 for (GLenum anErr = ::glGetError(), aPrevErr = GL_NO_ERROR;; aPrevErr = anErr, anErr = ::glGetError())
908 if (anErr == GL_NO_ERROR
909 || anErr == aPrevErr)
916 // Read version string.
917 // Notice that only first two numbers split by point '2.1 XXXXX' are significant.
918 // Following trash (after space) is vendor-specific.
919 // New drivers also returns micro version of GL like '3.3.0' which has no meaning
920 // and should be considered as vendor-specific too.
921 const char* aVerStr = (const char* )glGetString (GL_VERSION);
922 if (aVerStr == NULL || *aVerStr == '\0')
924 // invalid GL context
928 //#if defined(GL_ES_VERSION_2_0)
929 // skip "OpenGL ES-** " section
930 for (; *aVerStr != '\0'; ++aVerStr)
932 if (*aVerStr >= '0' && *aVerStr <= '9')
939 // parse string for major number
943 while (aVerStr[aMajIter] >= '0' && aVerStr[aMajIter] <= '9')
947 if (aMajIter == 0 || aMajIter >= sizeof(aMajorStr))
951 memcpy (aMajorStr, aVerStr, aMajIter);
952 aMajorStr[aMajIter] = '\0';
954 // parse string for minor number
955 aVerStr += aMajIter + 1;
957 while (aVerStr[aMinIter] >= '0' && aVerStr[aMinIter] <= '9')
961 if (aMinIter == 0 || aMinIter >= sizeof(aMinorStr))
965 memcpy (aMinorStr, aVerStr, aMinIter);
966 aMinorStr[aMinIter] = '\0';
969 theGlVerMajor = atoi (aMajorStr);
970 theGlVerMinor = atoi (aMinorStr);
972 if (theGlVerMajor <= 0)
979 static Standard_CString THE_DBGMSG_UNKNOWN = "UNKNOWN";
980 static Standard_CString THE_DBGMSG_SOURCES[] =
982 ".OpenGL", // GL_DEBUG_SOURCE_API
983 ".WinSystem", // GL_DEBUG_SOURCE_WINDOW_SYSTEM
984 ".GLSL", // GL_DEBUG_SOURCE_SHADER_COMPILER
985 ".3rdParty", // GL_DEBUG_SOURCE_THIRD_PARTY
986 "", // GL_DEBUG_SOURCE_APPLICATION
987 ".Other" // GL_DEBUG_SOURCE_OTHER
990 static Standard_CString THE_DBGMSG_TYPES[] =
992 "Error", // GL_DEBUG_TYPE_ERROR
993 "Deprecated", // GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR
994 "Undef. behavior", // GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR
995 "Portability", // GL_DEBUG_TYPE_PORTABILITY
996 "Performance", // GL_DEBUG_TYPE_PERFORMANCE
997 "Other" // GL_DEBUG_TYPE_OTHER
1000 static Standard_CString THE_DBGMSG_SEV_HIGH = "High"; // GL_DEBUG_SEVERITY_HIGH
1001 static Standard_CString THE_DBGMSG_SEV_MEDIUM = "Medium"; // GL_DEBUG_SEVERITY_MEDIUM
1002 static Standard_CString THE_DBGMSG_SEV_LOW = "Low"; // GL_DEBUG_SEVERITY_LOW
1004 //! Callback for GL_ARB_debug_output extension
1005 static void APIENTRY debugCallbackWrap(unsigned int theSource,
1006 unsigned int theType,
1008 unsigned int theSeverity,
1010 const char* theMessage,
1011 const void* theUserParam)
1013 OpenGl_Context* aCtx = (OpenGl_Context* )theUserParam;
1014 aCtx->PushMessage (theSource, theType, theId, theSeverity, theMessage);
1017 // =======================================================================
1018 // function : PushMessage
1020 // =======================================================================
1021 void OpenGl_Context::PushMessage (const unsigned int theSource,
1022 const unsigned int theType,
1023 const unsigned int theId,
1024 const unsigned int theSeverity,
1025 const TCollection_ExtendedString& theMessage)
1027 if (caps->suppressExtraMsg
1028 && theSource >= GL_DEBUG_SOURCE_API
1029 && theSource <= GL_DEBUG_SOURCE_OTHER
1030 && myFilters[theSource - GL_DEBUG_SOURCE_API].Contains (theId))
1035 Standard_CString& aSrc = (theSource >= GL_DEBUG_SOURCE_API
1036 && theSource <= GL_DEBUG_SOURCE_OTHER)
1037 ? THE_DBGMSG_SOURCES[theSource - GL_DEBUG_SOURCE_API]
1038 : THE_DBGMSG_UNKNOWN;
1039 Standard_CString& aType = (theType >= GL_DEBUG_TYPE_ERROR
1040 && theType <= GL_DEBUG_TYPE_OTHER)
1041 ? THE_DBGMSG_TYPES[theType - GL_DEBUG_TYPE_ERROR]
1042 : THE_DBGMSG_UNKNOWN;
1043 Standard_CString& aSev = theSeverity == GL_DEBUG_SEVERITY_HIGH
1044 ? THE_DBGMSG_SEV_HIGH
1045 : (theSeverity == GL_DEBUG_SEVERITY_MEDIUM
1046 ? THE_DBGMSG_SEV_MEDIUM
1047 : THE_DBGMSG_SEV_LOW);
1048 Message_Gravity aGrav = theSeverity == GL_DEBUG_SEVERITY_HIGH
1050 : (theSeverity == GL_DEBUG_SEVERITY_MEDIUM
1054 TCollection_ExtendedString aMsg;
1055 aMsg += "TKOpenGl"; aMsg += aSrc;
1056 aMsg += " | Type: "; aMsg += aType;
1057 aMsg += " | ID: "; aMsg += (Standard_Integer )theId;
1058 aMsg += " | Severity: "; aMsg += aSev;
1059 aMsg += " | Message:\n ";
1061 Messenger()->Send (aMsg, aGrav);
1064 // =======================================================================
1065 // function : ExcludeMessage
1067 // ======================================================================
1068 Standard_Boolean OpenGl_Context::ExcludeMessage (const unsigned int theSource,
1069 const unsigned int theId)
1071 return theSource >= GL_DEBUG_SOURCE_API
1072 && theSource <= GL_DEBUG_SOURCE_OTHER
1073 && myFilters[theSource - GL_DEBUG_SOURCE_API].Add (theId);
1076 // =======================================================================
1077 // function : IncludeMessage
1079 // ======================================================================
1080 Standard_Boolean OpenGl_Context::IncludeMessage (const unsigned int theSource,
1081 const unsigned int theId)
1083 return theSource >= GL_DEBUG_SOURCE_API
1084 && theSource <= GL_DEBUG_SOURCE_OTHER
1085 && myFilters[theSource - GL_DEBUG_SOURCE_API].Remove (theId);
1088 // =======================================================================
1089 // function : checkWrongVersion
1091 // ======================================================================
1092 void OpenGl_Context::checkWrongVersion (const Standard_Integer theGlVerMajor,
1093 const Standard_Integer theGlVerMinor)
1095 if (!IsGlGreaterEqual (theGlVerMajor, theGlVerMinor))
1100 TCollection_ExtendedString aMsg = TCollection_ExtendedString()
1101 + "Error! OpenGL context reports version "
1102 + myGlVerMajor + "." + myGlVerMinor
1103 + " but does not export required functions for "
1104 + theGlVerMajor + "." + theGlVerMinor;
1105 PushMessage (GL_DEBUG_SOURCE_APPLICATION,
1106 GL_DEBUG_TYPE_ERROR,
1108 GL_DEBUG_SEVERITY_HIGH,
1112 // =======================================================================
1115 // =======================================================================
1116 void OpenGl_Context::init (const Standard_Boolean theIsCoreProfile)
1121 myMaxMsaaSamples = 0;
1122 ReadGlVersion (myGlVerMajor, myGlVerMinor);
1123 myVendor = (const char* )::glGetString (GL_VENDOR);
1124 if (!caps->ffpEnable
1125 && !IsGlGreaterEqual (2, 0))
1127 caps->ffpEnable = true;
1128 TCollection_ExtendedString aMsg =
1129 TCollection_ExtendedString("OpenGL driver is too old! Context info:\n")
1130 + " Vendor: " + (const char* )::glGetString (GL_VENDOR) + "\n"
1131 + " Renderer: " + (const char* )::glGetString (GL_RENDERER) + "\n"
1132 + " Version: " + (const char* )::glGetString (GL_VERSION) + "\n"
1133 + " Fallback using deprecated fixed-function pipeline.\n"
1134 + " Visualization might work incorrectly.\n"
1135 " Consider upgrading the graphics driver.";
1136 PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_PORTABILITY, 0, GL_DEBUG_SEVERITY_HIGH, aMsg);
1139 #if defined(GL_ES_VERSION_2_0)
1140 (void )theIsCoreProfile;
1141 const bool isCoreProfile = false;
1144 if (myVendor.Search ("NVIDIA") != -1)
1146 // Buffer detailed info: Buffer object 1 (bound to GL_ARRAY_BUFFER_ARB, usage hint is GL_STATIC_DRAW)
1147 // will use VIDEO memory as the source for buffer object operations.
1148 ExcludeMessage (GL_DEBUG_SOURCE_API, 131185);
1150 if (IsGlGreaterEqual (3, 0))
1152 // retrieve auxiliary function in advance
1153 FindProc ("glGetStringi", myFuncs->glGetStringi);
1156 bool isCoreProfile = false;
1157 if (IsGlGreaterEqual (3, 2))
1159 isCoreProfile = (theIsCoreProfile == Standard_True);
1161 // detect Core profile
1165 ::glGetIntegerv (GL_CONTEXT_PROFILE_MASK, &aProfile);
1166 isCoreProfile = (aProfile & GL_CONTEXT_CORE_PROFILE_BIT) != 0;
1174 core11 = (OpenGl_GlCore11* )(&(*myFuncs));
1176 core11fwd = (OpenGl_GlCore11Fwd* )(&(*myFuncs));
1194 arbTboRGB32 = Standard_False;
1202 #if defined(GL_ES_VERSION_2_0)
1204 hasTexRGBA8 = IsGlGreaterEqual (3, 0)
1205 || CheckExtension ("GL_OES_rgb8_rgba8");
1206 // NPOT textures has limited support within OpenGL ES 2.0
1207 // which are relaxed by OpenGL ES 3.0 or some extensions
1208 //arbNPTW = IsGlGreaterEqual (3, 0)
1209 // || CheckExtension ("GL_OES_texture_npot")
1210 // || CheckExtension ("GL_NV_texture_npot_2D_mipmap");
1211 arbNPTW = Standard_True;
1212 arbTexRG = IsGlGreaterEqual (3, 0)
1213 || CheckExtension ("GL_EXT_texture_rg");
1214 extBgra = CheckExtension ("GL_EXT_texture_format_BGRA8888");
1215 extAnis = CheckExtension ("GL_EXT_texture_filter_anisotropic");
1216 extPDS = IsGlGreaterEqual (3, 0)
1217 || CheckExtension ("GL_OES_packed_depth_stencil");
1219 core11fwd = (OpenGl_GlCore11Fwd* )(&(*myFuncs));
1220 if (IsGlGreaterEqual (2, 0))
1222 // enable compatible functions
1223 core20 = (OpenGl_GlCore20* )(&(*myFuncs));
1224 core20fwd = (OpenGl_GlCore20Fwd* )(&(*myFuncs));
1225 core15fwd = (OpenGl_GlCore15Fwd* )(&(*myFuncs));
1226 arbFBO = (OpenGl_ArbFBO* )(&(*myFuncs));
1228 if (IsGlGreaterEqual (3, 0)
1229 && FindProc ("glBlitFramebuffer", myFuncs->glBlitFramebuffer))
1231 arbFBOBlit = (OpenGl_ArbFBOBlit* )(&(*myFuncs));
1233 extFragDepth = !IsGlGreaterEqual(3, 0)
1234 && CheckExtension ("GL_EXT_frag_depth");
1235 if (IsGlGreaterEqual (3, 1)
1236 && FindProc ("glTexStorage2DMultisample", myFuncs->glTexStorage2DMultisample))
1238 // MSAA RenderBuffers have been defined in OpenGL ES 3.0,
1239 // but MSAA Textures - only in OpenGL ES 3.1+
1240 ::glGetIntegerv (GL_MAX_SAMPLES, &myMaxMsaaSamples);
1243 hasUintIndex = IsGlGreaterEqual (3, 0)
1244 || CheckExtension ("GL_OES_element_index_uint");
1245 hasHighp = CheckExtension ("GL_OES_fragment_precision_high");
1246 GLint aRange[2] = {0, 0};
1248 ::glGetShaderPrecisionFormat (GL_FRAGMENT_SHADER, GL_HIGH_FLOAT, aRange, &aPrec);
1251 hasHighp = Standard_True;
1254 arbTexFloat = IsGlGreaterEqual (3, 0)
1255 && FindProc ("glTexImage3D", myFuncs->glTexImage3D);
1257 const Standard_Boolean hasTexBuffer32 = IsGlGreaterEqual (3, 2) && FindProc ("glTexBuffer", myFuncs->glTexBuffer);
1258 const Standard_Boolean hasExtTexBuffer = CheckExtension ("GL_EXT_texture_buffer") && FindProc ("glTexBufferEXT", myFuncs->glTexBuffer);
1260 if (hasTexBuffer32 || hasExtTexBuffer)
1262 arbTBO = reinterpret_cast<OpenGl_ArbTBO*> (myFuncs.get());
1265 // initialize debug context extension
1266 if (CheckExtension ("GL_KHR_debug"))
1268 // this functionality become a part of OpenGL ES 3.2
1270 // According to GL_KHR_debug spec, all functions should have KHR suffix.
1271 // However, some implementations can export these functions without suffix.
1272 if (FindProc ("glDebugMessageControlKHR", myFuncs->glDebugMessageControl)
1273 && FindProc ("glDebugMessageInsertKHR", myFuncs->glDebugMessageInsert)
1274 && FindProc ("glDebugMessageCallbackKHR", myFuncs->glDebugMessageCallback)
1275 && FindProc ("glGetDebugMessageLogKHR", myFuncs->glGetDebugMessageLog))
1277 arbDbg = (OpenGl_ArbDbg* )(&(*myFuncs));
1281 && caps->contextDebug)
1283 // setup default callback
1284 myIsGlDebugCtx = Standard_True;
1285 arbDbg->glDebugMessageCallback (debugCallbackWrap, this);
1286 ::glEnable (GL_DEBUG_OUTPUT);
1287 if (caps->contextSyncDebug)
1289 // note that some broken implementations (e.g. simulators) might generate error message on this call
1290 ::glEnable (GL_DEBUG_OUTPUT_SYNCHRONOUS);
1297 myTexClamp = IsGlGreaterEqual (1, 2) ? GL_CLAMP_TO_EDGE : GL_CLAMP;
1299 hasTexRGBA8 = Standard_True;
1300 arbNPTW = CheckExtension ("GL_ARB_texture_non_power_of_two");
1301 arbTexFloat = IsGlGreaterEqual (3, 0)
1302 || CheckExtension ("GL_ARB_texture_float");
1303 extBgra = CheckExtension ("GL_EXT_bgra");
1304 extAnis = CheckExtension ("GL_EXT_texture_filter_anisotropic");
1305 extPDS = CheckExtension ("GL_EXT_packed_depth_stencil");
1306 atiMem = CheckExtension ("GL_ATI_meminfo");
1307 nvxMem = CheckExtension ("GL_NVX_gpu_memory_info");
1309 GLint aStereo = GL_FALSE;
1310 glGetIntegerv (GL_STEREO, &aStereo);
1311 myIsStereoBuffers = aStereo == 1;
1313 // get number of maximum clipping planes
1314 glGetIntegerv (GL_MAX_CLIP_PLANES, &myMaxClipPlanes);
1317 glGetIntegerv (GL_MAX_TEXTURE_SIZE, &myMaxTexDim);
1321 glGetIntegerv (GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &myAnisoMax);
1324 myClippingState.Init (myMaxClipPlanes);
1326 #if !defined(GL_ES_VERSION_2_0)
1344 //! Make record shorter to retrieve function pointer using variable with same name
1345 #define FindProcShort(theFunc) FindProc(#theFunc, myFuncs->theFunc)
1347 // retrieve platform-dependent extensions
1348 #if defined(HAVE_EGL)
1350 #elif defined(_WIN32)
1351 if (FindProcShort (wglGetExtensionsStringARB))
1353 const char* aWglExts = myFuncs->wglGetExtensionsStringARB (wglGetCurrentDC());
1354 if (CheckExtension (aWglExts, "WGL_EXT_swap_control"))
1356 FindProcShort (wglSwapIntervalEXT);
1358 if (CheckExtension (aWglExts, "WGL_ARB_pixel_format"))
1360 FindProcShort (wglChoosePixelFormatARB);
1362 if (CheckExtension (aWglExts, "WGL_ARB_create_context_profile"))
1364 FindProcShort (wglCreateContextAttribsARB);
1366 if (CheckExtension (aWglExts, "WGL_NV_DX_interop"))
1368 FindProcShort (wglDXSetResourceShareHandleNV);
1369 FindProcShort (wglDXOpenDeviceNV);
1370 FindProcShort (wglDXCloseDeviceNV);
1371 FindProcShort (wglDXRegisterObjectNV);
1372 FindProcShort (wglDXUnregisterObjectNV);
1373 FindProcShort (wglDXObjectAccessNV);
1374 FindProcShort (wglDXLockObjectsNV);
1375 FindProcShort (wglDXUnlockObjectsNV);
1377 if (CheckExtension (aWglExts, "WGL_AMD_gpu_association"))
1379 FindProcShort (wglGetGPUIDsAMD);
1380 FindProcShort (wglGetGPUInfoAMD);
1381 FindProcShort (wglGetContextGPUIDAMD);
1384 #elif defined(__APPLE__)
1387 const char* aGlxExts = ::glXQueryExtensionsString ((Display* )myDisplay, DefaultScreen ((Display* )myDisplay));
1388 if (CheckExtension (aGlxExts, "GLX_EXT_swap_control"))
1390 FindProcShort (glXSwapIntervalEXT);
1392 if (CheckExtension (aGlxExts, "GLX_SGI_swap_control"))
1394 FindProcShort (glXSwapIntervalSGI);
1396 if (CheckExtension (aGlxExts, "GLX_MESA_query_renderer"))
1398 FindProcShort (glXQueryRendererIntegerMESA);
1399 FindProcShort (glXQueryCurrentRendererIntegerMESA);
1400 FindProcShort (glXQueryRendererStringMESA);
1401 FindProcShort (glXQueryCurrentRendererStringMESA);
1403 //extSwapTear = CheckExtension (aGlxExts, "GLX_EXT_swap_control_tear");
1406 // load OpenGL 1.2 new functions
1407 has12 = IsGlGreaterEqual (1, 2)
1408 && FindProcShort (glBlendColor)
1409 && FindProcShort (glBlendEquation)
1410 && FindProcShort (glDrawRangeElements)
1411 && FindProcShort (glTexImage3D)
1412 && FindProcShort (glTexSubImage3D)
1413 && FindProcShort (glCopyTexSubImage3D);
1415 // load OpenGL 1.3 new functions
1416 has13 = IsGlGreaterEqual (1, 3)
1417 && FindProcShort (glActiveTexture)
1418 && FindProcShort (glSampleCoverage)
1419 && FindProcShort (glCompressedTexImage3D)
1420 && FindProcShort (glCompressedTexImage2D)
1421 && FindProcShort (glCompressedTexImage1D)
1422 && FindProcShort (glCompressedTexSubImage3D)
1423 && FindProcShort (glCompressedTexSubImage2D)
1424 && FindProcShort (glCompressedTexSubImage1D)
1425 && FindProcShort (glGetCompressedTexImage);
1430 && FindProcShort (glClientActiveTexture)
1431 && FindProcShort (glMultiTexCoord1d)
1432 && FindProcShort (glMultiTexCoord1dv)
1433 && FindProcShort (glMultiTexCoord1f)
1434 && FindProcShort (glMultiTexCoord1fv)
1435 && FindProcShort (glMultiTexCoord1i)
1436 && FindProcShort (glMultiTexCoord1iv)
1437 && FindProcShort (glMultiTexCoord1s)
1438 && FindProcShort (glMultiTexCoord1sv)
1439 && FindProcShort (glMultiTexCoord2d)
1440 && FindProcShort (glMultiTexCoord2dv)
1441 && FindProcShort (glMultiTexCoord2f)
1442 && FindProcShort (glMultiTexCoord2fv)
1443 && FindProcShort (glMultiTexCoord2i)
1444 && FindProcShort (glMultiTexCoord2iv)
1445 && FindProcShort (glMultiTexCoord2s)
1446 && FindProcShort (glMultiTexCoord2sv)
1447 && FindProcShort (glMultiTexCoord3d)
1448 && FindProcShort (glMultiTexCoord3dv)
1449 && FindProcShort (glMultiTexCoord3f)
1450 && FindProcShort (glMultiTexCoord3fv)
1451 && FindProcShort (glMultiTexCoord3i)
1452 && FindProcShort (glMultiTexCoord3iv)
1453 && FindProcShort (glMultiTexCoord3s)
1454 && FindProcShort (glMultiTexCoord3sv)
1455 && FindProcShort (glMultiTexCoord4d)
1456 && FindProcShort (glMultiTexCoord4dv)
1457 && FindProcShort (glMultiTexCoord4f)
1458 && FindProcShort (glMultiTexCoord4fv)
1459 && FindProcShort (glMultiTexCoord4i)
1460 && FindProcShort (glMultiTexCoord4iv)
1461 && FindProcShort (glMultiTexCoord4s)
1462 && FindProcShort (glMultiTexCoord4sv)
1463 && FindProcShort (glLoadTransposeMatrixf)
1464 && FindProcShort (glLoadTransposeMatrixd)
1465 && FindProcShort (glMultTransposeMatrixf)
1466 && FindProcShort (glMultTransposeMatrixd);
1469 // load OpenGL 1.4 new functions
1470 has14 = IsGlGreaterEqual (1, 4)
1471 && FindProcShort (glBlendFuncSeparate)
1472 && FindProcShort (glMultiDrawArrays)
1473 && FindProcShort (glMultiDrawElements)
1474 && FindProcShort (glPointParameterf)
1475 && FindProcShort (glPointParameterfv)
1476 && FindProcShort (glPointParameteri)
1477 && FindProcShort (glPointParameteriv);
1479 // load OpenGL 1.5 new functions
1480 has15 = IsGlGreaterEqual (1, 5)
1481 && FindProcShort (glGenQueries)
1482 && FindProcShort (glDeleteQueries)
1483 && FindProcShort (glIsQuery)
1484 && FindProcShort (glBeginQuery)
1485 && FindProcShort (glEndQuery)
1486 && FindProcShort (glGetQueryiv)
1487 && FindProcShort (glGetQueryObjectiv)
1488 && FindProcShort (glGetQueryObjectuiv)
1489 && FindProcShort (glBindBuffer)
1490 && FindProcShort (glDeleteBuffers)
1491 && FindProcShort (glGenBuffers)
1492 && FindProcShort (glIsBuffer)
1493 && FindProcShort (glBufferData)
1494 && FindProcShort (glBufferSubData)
1495 && FindProcShort (glGetBufferSubData)
1496 && FindProcShort (glMapBuffer)
1497 && FindProcShort (glUnmapBuffer)
1498 && FindProcShort (glGetBufferParameteriv)
1499 && FindProcShort (glGetBufferPointerv);
1501 // load OpenGL 2.0 new functions
1502 has20 = IsGlGreaterEqual (2, 0)
1503 && FindProcShort (glBlendEquationSeparate)
1504 && FindProcShort (glDrawBuffers)
1505 && FindProcShort (glStencilOpSeparate)
1506 && FindProcShort (glStencilFuncSeparate)
1507 && FindProcShort (glStencilMaskSeparate)
1508 && FindProcShort (glAttachShader)
1509 && FindProcShort (glBindAttribLocation)
1510 && FindProcShort (glCompileShader)
1511 && FindProcShort (glCreateProgram)
1512 && FindProcShort (glCreateShader)
1513 && FindProcShort (glDeleteProgram)
1514 && FindProcShort (glDeleteShader)
1515 && FindProcShort (glDetachShader)
1516 && FindProcShort (glDisableVertexAttribArray)
1517 && FindProcShort (glEnableVertexAttribArray)
1518 && FindProcShort (glGetActiveAttrib)
1519 && FindProcShort (glGetActiveUniform)
1520 && FindProcShort (glGetAttachedShaders)
1521 && FindProcShort (glGetAttribLocation)
1522 && FindProcShort (glGetProgramiv)
1523 && FindProcShort (glGetProgramInfoLog)
1524 && FindProcShort (glGetShaderiv)
1525 && FindProcShort (glGetShaderInfoLog)
1526 && FindProcShort (glGetShaderSource)
1527 && FindProcShort (glGetUniformLocation)
1528 && FindProcShort (glGetUniformfv)
1529 && FindProcShort (glGetUniformiv)
1530 && FindProcShort (glGetVertexAttribdv)
1531 && FindProcShort (glGetVertexAttribfv)
1532 && FindProcShort (glGetVertexAttribiv)
1533 && FindProcShort (glGetVertexAttribPointerv)
1534 && FindProcShort (glIsProgram)
1535 && FindProcShort (glIsShader)
1536 && FindProcShort (glLinkProgram)
1537 && FindProcShort (glShaderSource)
1538 && FindProcShort (glUseProgram)
1539 && FindProcShort (glUniform1f)
1540 && FindProcShort (glUniform2f)
1541 && FindProcShort (glUniform3f)
1542 && FindProcShort (glUniform4f)
1543 && FindProcShort (glUniform1i)
1544 && FindProcShort (glUniform2i)
1545 && FindProcShort (glUniform3i)
1546 && FindProcShort (glUniform4i)
1547 && FindProcShort (glUniform1fv)
1548 && FindProcShort (glUniform2fv)
1549 && FindProcShort (glUniform3fv)
1550 && FindProcShort (glUniform4fv)
1551 && FindProcShort (glUniform1iv)
1552 && FindProcShort (glUniform2iv)
1553 && FindProcShort (glUniform3iv)
1554 && FindProcShort (glUniform4iv)
1555 && FindProcShort (glUniformMatrix2fv)
1556 && FindProcShort (glUniformMatrix3fv)
1557 && FindProcShort (glUniformMatrix4fv)
1558 && FindProcShort (glValidateProgram)
1559 && FindProcShort (glVertexAttrib1d)
1560 && FindProcShort (glVertexAttrib1dv)
1561 && FindProcShort (glVertexAttrib1f)
1562 && FindProcShort (glVertexAttrib1fv)
1563 && FindProcShort (glVertexAttrib1s)
1564 && FindProcShort (glVertexAttrib1sv)
1565 && FindProcShort (glVertexAttrib2d)
1566 && FindProcShort (glVertexAttrib2dv)
1567 && FindProcShort (glVertexAttrib2f)
1568 && FindProcShort (glVertexAttrib2fv)
1569 && FindProcShort (glVertexAttrib2s)
1570 && FindProcShort (glVertexAttrib2sv)
1571 && FindProcShort (glVertexAttrib3d)
1572 && FindProcShort (glVertexAttrib3dv)
1573 && FindProcShort (glVertexAttrib3f)
1574 && FindProcShort (glVertexAttrib3fv)
1575 && FindProcShort (glVertexAttrib3s)
1576 && FindProcShort (glVertexAttrib3sv)
1577 && FindProcShort (glVertexAttrib4Nbv)
1578 && FindProcShort (glVertexAttrib4Niv)
1579 && FindProcShort (glVertexAttrib4Nsv)
1580 && FindProcShort (glVertexAttrib4Nub)
1581 && FindProcShort (glVertexAttrib4Nubv)
1582 && FindProcShort (glVertexAttrib4Nuiv)
1583 && FindProcShort (glVertexAttrib4Nusv)
1584 && FindProcShort (glVertexAttrib4bv)
1585 && FindProcShort (glVertexAttrib4d)
1586 && FindProcShort (glVertexAttrib4dv)
1587 && FindProcShort (glVertexAttrib4f)
1588 && FindProcShort (glVertexAttrib4fv)
1589 && FindProcShort (glVertexAttrib4iv)
1590 && FindProcShort (glVertexAttrib4s)
1591 && FindProcShort (glVertexAttrib4sv)
1592 && FindProcShort (glVertexAttrib4ubv)
1593 && FindProcShort (glVertexAttrib4uiv)
1594 && FindProcShort (glVertexAttrib4usv)
1595 && FindProcShort (glVertexAttribPointer);
1597 // load OpenGL 2.1 new functions
1598 has21 = IsGlGreaterEqual (2, 1)
1599 && FindProcShort (glUniformMatrix2x3fv)
1600 && FindProcShort (glUniformMatrix3x2fv)
1601 && FindProcShort (glUniformMatrix2x4fv)
1602 && FindProcShort (glUniformMatrix4x2fv)
1603 && FindProcShort (glUniformMatrix3x4fv)
1604 && FindProcShort (glUniformMatrix4x3fv);
1606 // load GL_ARB_framebuffer_object (added to OpenGL 3.0 core)
1607 const bool hasFBO = (IsGlGreaterEqual (3, 0) || CheckExtension ("GL_ARB_framebuffer_object"))
1608 && FindProcShort (glIsRenderbuffer)
1609 && FindProcShort (glBindRenderbuffer)
1610 && FindProcShort (glDeleteRenderbuffers)
1611 && FindProcShort (glGenRenderbuffers)
1612 && FindProcShort (glRenderbufferStorage)
1613 && FindProcShort (glGetRenderbufferParameteriv)
1614 && FindProcShort (glIsFramebuffer)
1615 && FindProcShort (glBindFramebuffer)
1616 && FindProcShort (glDeleteFramebuffers)
1617 && FindProcShort (glGenFramebuffers)
1618 && FindProcShort (glCheckFramebufferStatus)
1619 && FindProcShort (glFramebufferTexture1D)
1620 && FindProcShort (glFramebufferTexture2D)
1621 && FindProcShort (glFramebufferTexture3D)
1622 && FindProcShort (glFramebufferRenderbuffer)
1623 && FindProcShort (glGetFramebufferAttachmentParameteriv)
1624 && FindProcShort (glGenerateMipmap)
1625 && FindProcShort (glBlitFramebuffer)
1626 && FindProcShort (glRenderbufferStorageMultisample)
1627 && FindProcShort (glFramebufferTextureLayer);
1629 // load GL_ARB_vertex_array_object (added to OpenGL 3.0 core)
1630 const bool hasVAO = (IsGlGreaterEqual (3, 0) || CheckExtension ("GL_ARB_vertex_array_object"))
1631 && FindProcShort (glBindVertexArray)
1632 && FindProcShort (glDeleteVertexArrays)
1633 && FindProcShort (glGenVertexArrays)
1634 && FindProcShort (glIsVertexArray);
1636 // load GL_ARB_map_buffer_range (added to OpenGL 3.0 core)
1637 const bool hasMapBufferRange = (IsGlGreaterEqual (3, 0) || CheckExtension ("GL_ARB_map_buffer_range"))
1638 && FindProcShort (glMapBufferRange)
1639 && FindProcShort (glFlushMappedBufferRange);
1641 // load OpenGL 3.0 new functions
1642 has30 = IsGlGreaterEqual (3, 0)
1645 && hasMapBufferRange
1646 && FindProcShort (glColorMaski)
1647 && FindProcShort (glGetBooleani_v)
1648 && FindProcShort (glGetIntegeri_v)
1649 && FindProcShort (glEnablei)
1650 && FindProcShort (glDisablei)
1651 && FindProcShort (glIsEnabledi)
1652 && FindProcShort (glBeginTransformFeedback)
1653 && FindProcShort (glEndTransformFeedback)
1654 && FindProcShort (glBindBufferRange)
1655 && FindProcShort (glBindBufferBase)
1656 && FindProcShort (glTransformFeedbackVaryings)
1657 && FindProcShort (glGetTransformFeedbackVarying)
1658 && FindProcShort (glClampColor)
1659 && FindProcShort (glBeginConditionalRender)
1660 && FindProcShort (glEndConditionalRender)
1661 && FindProcShort (glVertexAttribIPointer)
1662 && FindProcShort (glGetVertexAttribIiv)
1663 && FindProcShort (glGetVertexAttribIuiv)
1664 && FindProcShort (glVertexAttribI1i)
1665 && FindProcShort (glVertexAttribI2i)
1666 && FindProcShort (glVertexAttribI3i)
1667 && FindProcShort (glVertexAttribI4i)
1668 && FindProcShort (glVertexAttribI1ui)
1669 && FindProcShort (glVertexAttribI2ui)
1670 && FindProcShort (glVertexAttribI3ui)
1671 && FindProcShort (glVertexAttribI4ui)
1672 && FindProcShort (glVertexAttribI1iv)
1673 && FindProcShort (glVertexAttribI2iv)
1674 && FindProcShort (glVertexAttribI3iv)
1675 && FindProcShort (glVertexAttribI4iv)
1676 && FindProcShort (glVertexAttribI1uiv)
1677 && FindProcShort (glVertexAttribI2uiv)
1678 && FindProcShort (glVertexAttribI3uiv)
1679 && FindProcShort (glVertexAttribI4uiv)
1680 && FindProcShort (glVertexAttribI4bv)
1681 && FindProcShort (glVertexAttribI4sv)
1682 && FindProcShort (glVertexAttribI4ubv)
1683 && FindProcShort (glVertexAttribI4usv)
1684 && FindProcShort (glGetUniformuiv)
1685 && FindProcShort (glBindFragDataLocation)
1686 && FindProcShort (glGetFragDataLocation)
1687 && FindProcShort (glUniform1ui)
1688 && FindProcShort (glUniform2ui)
1689 && FindProcShort (glUniform3ui)
1690 && FindProcShort (glUniform4ui)
1691 && FindProcShort (glUniform1uiv)
1692 && FindProcShort (glUniform2uiv)
1693 && FindProcShort (glUniform3uiv)
1694 && FindProcShort (glUniform4uiv)
1695 && FindProcShort (glTexParameterIiv)
1696 && FindProcShort (glTexParameterIuiv)
1697 && FindProcShort (glGetTexParameterIiv)
1698 && FindProcShort (glGetTexParameterIuiv)
1699 && FindProcShort (glClearBufferiv)
1700 && FindProcShort (glClearBufferuiv)
1701 && FindProcShort (glClearBufferfv)
1702 && FindProcShort (glClearBufferfi)
1703 && FindProcShort (glGetStringi);
1705 // load GL_ARB_uniform_buffer_object (added to OpenGL 3.1 core)
1706 const bool hasUBO = (IsGlGreaterEqual (3, 1) || CheckExtension ("GL_ARB_uniform_buffer_object"))
1707 && FindProcShort (glGetUniformIndices)
1708 && FindProcShort (glGetActiveUniformsiv)
1709 && FindProcShort (glGetActiveUniformName)
1710 && FindProcShort (glGetUniformBlockIndex)
1711 && FindProcShort (glGetActiveUniformBlockiv)
1712 && FindProcShort (glGetActiveUniformBlockName)
1713 && FindProcShort (glUniformBlockBinding);
1715 // load GL_ARB_copy_buffer (added to OpenGL 3.1 core)
1716 const bool hasCopyBufSubData = (IsGlGreaterEqual (3, 1) || CheckExtension ("GL_ARB_copy_buffer"))
1717 && FindProcShort (glCopyBufferSubData);
1721 // NPOT textures are required by OpenGL 2.0 specifications
1722 // but doesn't hardware accelerated by some ancient OpenGL 2.1 hardware (GeForce FX, RadeOn 9700 etc.)
1723 arbNPTW = Standard_True;
1724 arbTexRG = Standard_True;
1727 // load OpenGL 3.1 new functions
1728 has31 = IsGlGreaterEqual (3, 1)
1730 && hasCopyBufSubData
1731 && FindProcShort (glDrawArraysInstanced)
1732 && FindProcShort (glDrawElementsInstanced)
1733 && FindProcShort (glTexBuffer)
1734 && FindProcShort (glPrimitiveRestartIndex);
1736 // load GL_ARB_draw_elements_base_vertex (added to OpenGL 3.2 core)
1737 const bool hasDrawElemsBaseVert = (IsGlGreaterEqual (3, 2) || CheckExtension ("GL_ARB_draw_elements_base_vertex"))
1738 && FindProcShort (glDrawElementsBaseVertex)
1739 && FindProcShort (glDrawRangeElementsBaseVertex)
1740 && FindProcShort (glDrawElementsInstancedBaseVertex)
1741 && FindProcShort (glMultiDrawElementsBaseVertex);
1743 // load GL_ARB_provoking_vertex (added to OpenGL 3.2 core)
1744 const bool hasProvokingVert = (IsGlGreaterEqual (3, 2) || CheckExtension ("GL_ARB_provoking_vertex"))
1745 && FindProcShort (glProvokingVertex);
1747 // load GL_ARB_sync (added to OpenGL 3.2 core)
1748 const bool hasSync = (IsGlGreaterEqual (3, 2) || CheckExtension ("GL_ARB_sync"))
1749 && FindProcShort (glFenceSync)
1750 && FindProcShort (glIsSync)
1751 && FindProcShort (glDeleteSync)
1752 && FindProcShort (glClientWaitSync)
1753 && FindProcShort (glWaitSync)
1754 && FindProcShort (glGetInteger64v)
1755 && FindProcShort (glGetSynciv);
1757 // load GL_ARB_texture_multisample (added to OpenGL 3.2 core)
1758 const bool hasTextureMultisample = (IsGlGreaterEqual (3, 2) || CheckExtension ("GL_ARB_texture_multisample"))
1759 && FindProcShort (glTexImage2DMultisample)
1760 && FindProcShort (glTexImage3DMultisample)
1761 && FindProcShort (glGetMultisamplefv)
1762 && FindProcShort (glSampleMaski);
1764 // load OpenGL 3.2 new functions
1765 has32 = IsGlGreaterEqual (3, 2)
1766 && hasDrawElemsBaseVert
1769 && hasTextureMultisample
1770 && FindProcShort (glGetInteger64i_v)
1771 && FindProcShort (glGetBufferParameteri64v)
1772 && FindProcShort (glFramebufferTexture);
1774 // load GL_ARB_blend_func_extended (added to OpenGL 3.3 core)
1775 const bool hasBlendFuncExtended = (IsGlGreaterEqual (3, 3) || CheckExtension ("GL_ARB_blend_func_extended"))
1776 && FindProcShort (glBindFragDataLocationIndexed)
1777 && FindProcShort (glGetFragDataIndex);
1779 // load GL_ARB_sampler_objects (added to OpenGL 3.3 core)
1780 const bool hasSamplerObjects = (IsGlGreaterEqual (3, 3) || CheckExtension ("GL_ARB_sampler_objects"))
1781 && FindProcShort (glGenSamplers)
1782 && FindProcShort (glDeleteSamplers)
1783 && FindProcShort (glIsSampler)
1784 && FindProcShort (glBindSampler)
1785 && FindProcShort (glSamplerParameteri)
1786 && FindProcShort (glSamplerParameteriv)
1787 && FindProcShort (glSamplerParameterf)
1788 && FindProcShort (glSamplerParameterfv)
1789 && FindProcShort (glSamplerParameterIiv)
1790 && FindProcShort (glSamplerParameterIuiv)
1791 && FindProcShort (glGetSamplerParameteriv)
1792 && FindProcShort (glGetSamplerParameterIiv)
1793 && FindProcShort (glGetSamplerParameterfv)
1794 && FindProcShort (glGetSamplerParameterIuiv);
1796 // load GL_ARB_timer_query (added to OpenGL 3.3 core)
1797 const bool hasTimerQuery = (IsGlGreaterEqual (3, 3) || CheckExtension ("GL_ARB_timer_query"))
1798 && FindProcShort (glQueryCounter)
1799 && FindProcShort (glGetQueryObjecti64v)
1800 && FindProcShort (glGetQueryObjectui64v);
1802 // load GL_ARB_vertex_type_2_10_10_10_rev (added to OpenGL 3.3 core)
1803 const bool hasVertType21010101rev = (IsGlGreaterEqual (3, 3) || CheckExtension ("GL_ARB_vertex_type_2_10_10_10_rev"))
1804 && FindProcShort (glVertexAttribP1ui)
1805 && FindProcShort (glVertexAttribP1uiv)
1806 && FindProcShort (glVertexAttribP2ui)
1807 && FindProcShort (glVertexAttribP2uiv)
1808 && FindProcShort (glVertexAttribP3ui)
1809 && FindProcShort (glVertexAttribP3uiv)
1810 && FindProcShort (glVertexAttribP4ui)
1811 && FindProcShort (glVertexAttribP4uiv);
1813 if ( hasVertType21010101rev
1816 // load deprecated functions
1817 const bool hasVertType21010101revExt =
1818 FindProcShort (glVertexP2ui)
1819 && FindProcShort (glVertexP2uiv)
1820 && FindProcShort (glVertexP3ui)
1821 && FindProcShort (glVertexP3uiv)
1822 && FindProcShort (glVertexP4ui)
1823 && FindProcShort (glVertexP4uiv)
1824 && FindProcShort (glTexCoordP1ui)
1825 && FindProcShort (glTexCoordP1uiv)
1826 && FindProcShort (glTexCoordP2ui)
1827 && FindProcShort (glTexCoordP2uiv)
1828 && FindProcShort (glTexCoordP3ui)
1829 && FindProcShort (glTexCoordP3uiv)
1830 && FindProcShort (glTexCoordP4ui)
1831 && FindProcShort (glTexCoordP4uiv)
1832 && FindProcShort (glMultiTexCoordP1ui)
1833 && FindProcShort (glMultiTexCoordP1uiv)
1834 && FindProcShort (glMultiTexCoordP2ui)
1835 && FindProcShort (glMultiTexCoordP2uiv)
1836 && FindProcShort (glMultiTexCoordP3ui)
1837 && FindProcShort (glMultiTexCoordP3uiv)
1838 && FindProcShort (glMultiTexCoordP4ui)
1839 && FindProcShort (glMultiTexCoordP4uiv)
1840 && FindProcShort (glNormalP3ui)
1841 && FindProcShort (glNormalP3uiv)
1842 && FindProcShort (glColorP3ui)
1843 && FindProcShort (glColorP3uiv)
1844 && FindProcShort (glColorP4ui)
1845 && FindProcShort (glColorP4uiv)
1846 && FindProcShort (glSecondaryColorP3ui)
1847 && FindProcShort (glSecondaryColorP3uiv);
1848 (void )hasVertType21010101revExt;
1851 // load OpenGL 3.3 extra functions
1852 has33 = IsGlGreaterEqual (3, 3)
1853 && hasBlendFuncExtended
1854 && hasSamplerObjects
1856 && hasVertType21010101rev
1857 && FindProcShort (glVertexAttribDivisor);
1859 // load GL_ARB_draw_indirect (added to OpenGL 4.0 core)
1860 const bool hasDrawIndirect = (IsGlGreaterEqual (4, 0) || CheckExtension ("GL_ARB_draw_indirect"))
1861 && FindProcShort (glDrawArraysIndirect)
1862 && FindProcShort (glDrawElementsIndirect);
1864 // load GL_ARB_gpu_shader_fp64 (added to OpenGL 4.0 core)
1865 const bool hasShaderFP64 = (IsGlGreaterEqual (4, 0) || CheckExtension ("GL_ARB_gpu_shader_fp64"))
1866 && FindProcShort (glUniform1d)
1867 && FindProcShort (glUniform2d)
1868 && FindProcShort (glUniform3d)
1869 && FindProcShort (glUniform4d)
1870 && FindProcShort (glUniform1dv)
1871 && FindProcShort (glUniform2dv)
1872 && FindProcShort (glUniform3dv)
1873 && FindProcShort (glUniform4dv)
1874 && FindProcShort (glUniformMatrix2dv)
1875 && FindProcShort (glUniformMatrix3dv)
1876 && FindProcShort (glUniformMatrix4dv)
1877 && FindProcShort (glUniformMatrix2x3dv)
1878 && FindProcShort (glUniformMatrix2x4dv)
1879 && FindProcShort (glUniformMatrix3x2dv)
1880 && FindProcShort (glUniformMatrix3x4dv)
1881 && FindProcShort (glUniformMatrix4x2dv)
1882 && FindProcShort (glUniformMatrix4x3dv)
1883 && FindProcShort (glGetUniformdv);
1885 // load GL_ARB_shader_subroutine (added to OpenGL 4.0 core)
1886 const bool hasShaderSubroutine = (IsGlGreaterEqual (4, 0) || CheckExtension ("GL_ARB_shader_subroutine"))
1887 && FindProcShort (glGetSubroutineUniformLocation)
1888 && FindProcShort (glGetSubroutineIndex)
1889 && FindProcShort (glGetActiveSubroutineUniformiv)
1890 && FindProcShort (glGetActiveSubroutineUniformName)
1891 && FindProcShort (glGetActiveSubroutineName)
1892 && FindProcShort (glUniformSubroutinesuiv)
1893 && FindProcShort (glGetUniformSubroutineuiv)
1894 && FindProcShort (glGetProgramStageiv);
1896 // load GL_ARB_tessellation_shader (added to OpenGL 4.0 core)
1897 const bool hasTessellationShader = (IsGlGreaterEqual (4, 0) || CheckExtension ("GL_ARB_tessellation_shader"))
1898 && FindProcShort (glPatchParameteri)
1899 && FindProcShort (glPatchParameterfv);
1901 // load GL_ARB_transform_feedback2 (added to OpenGL 4.0 core)
1902 const bool hasTrsfFeedback2 = (IsGlGreaterEqual (4, 0) || CheckExtension ("GL_ARB_transform_feedback2"))
1903 && FindProcShort (glBindTransformFeedback)
1904 && FindProcShort (glDeleteTransformFeedbacks)
1905 && FindProcShort (glGenTransformFeedbacks)
1906 && FindProcShort (glIsTransformFeedback)
1907 && FindProcShort (glPauseTransformFeedback)
1908 && FindProcShort (glResumeTransformFeedback)
1909 && FindProcShort (glDrawTransformFeedback);
1911 // load GL_ARB_transform_feedback3 (added to OpenGL 4.0 core)
1912 const bool hasTrsfFeedback3 = (IsGlGreaterEqual (4, 0) || CheckExtension ("GL_ARB_transform_feedback3"))
1913 && FindProcShort (glDrawTransformFeedbackStream)
1914 && FindProcShort (glBeginQueryIndexed)
1915 && FindProcShort (glEndQueryIndexed)
1916 && FindProcShort (glGetQueryIndexediv);
1918 // load OpenGL 4.0 new functions
1919 has40 = IsGlGreaterEqual (4, 0)
1922 && hasShaderSubroutine
1923 && hasTessellationShader
1926 && FindProcShort (glMinSampleShading)
1927 && FindProcShort (glBlendEquationi)
1928 && FindProcShort (glBlendEquationSeparatei)
1929 && FindProcShort (glBlendFunci)
1930 && FindProcShort (glBlendFuncSeparatei);
1932 // load GL_ARB_ES2_compatibility (added to OpenGL 4.1 core)
1933 const bool hasES2Compatibility = (IsGlGreaterEqual (4, 1) || CheckExtension ("GL_ARB_ES2_compatibility"))
1934 && FindProcShort (glReleaseShaderCompiler)
1935 && FindProcShort (glShaderBinary)
1936 && FindProcShort (glGetShaderPrecisionFormat)
1937 && FindProcShort (glDepthRangef)
1938 && FindProcShort (glClearDepthf);
1940 // load GL_ARB_get_program_binary (added to OpenGL 4.1 core)
1941 const bool hasGetProgramBinary = (IsGlGreaterEqual (4, 1) || CheckExtension ("GL_ARB_get_program_binary"))
1942 && FindProcShort (glGetProgramBinary)
1943 && FindProcShort (glProgramBinary)
1944 && FindProcShort (glProgramParameteri);
1947 // load GL_ARB_separate_shader_objects (added to OpenGL 4.1 core)
1948 const bool hasSeparateShaderObjects = (IsGlGreaterEqual (4, 1) || CheckExtension ("GL_ARB_separate_shader_objects"))
1949 && FindProcShort (glUseProgramStages)
1950 && FindProcShort (glActiveShaderProgram)
1951 && FindProcShort (glCreateShaderProgramv)
1952 && FindProcShort (glBindProgramPipeline)
1953 && FindProcShort (glDeleteProgramPipelines)
1954 && FindProcShort (glGenProgramPipelines)
1955 && FindProcShort (glIsProgramPipeline)
1956 && FindProcShort (glGetProgramPipelineiv)
1957 && FindProcShort (glProgramUniform1i)
1958 && FindProcShort (glProgramUniform1iv)
1959 && FindProcShort (glProgramUniform1f)
1960 && FindProcShort (glProgramUniform1fv)
1961 && FindProcShort (glProgramUniform1d)
1962 && FindProcShort (glProgramUniform1dv)
1963 && FindProcShort (glProgramUniform1ui)
1964 && FindProcShort (glProgramUniform1uiv)
1965 && FindProcShort (glProgramUniform2i)
1966 && FindProcShort (glProgramUniform2iv)
1967 && FindProcShort (glProgramUniform2f)
1968 && FindProcShort (glProgramUniform2fv)
1969 && FindProcShort (glProgramUniform2d)
1970 && FindProcShort (glProgramUniform2dv)
1971 && FindProcShort (glProgramUniform2ui)
1972 && FindProcShort (glProgramUniform2uiv)
1973 && FindProcShort (glProgramUniform3i)
1974 && FindProcShort (glProgramUniform3iv)
1975 && FindProcShort (glProgramUniform3f)
1976 && FindProcShort (glProgramUniform3fv)
1977 && FindProcShort (glProgramUniform3d)
1978 && FindProcShort (glProgramUniform3dv)
1979 && FindProcShort (glProgramUniform3ui)
1980 && FindProcShort (glProgramUniform3uiv)
1981 && FindProcShort (glProgramUniform4i)
1982 && FindProcShort (glProgramUniform4iv)
1983 && FindProcShort (glProgramUniform4f)
1984 && FindProcShort (glProgramUniform4fv)
1985 && FindProcShort (glProgramUniform4d)
1986 && FindProcShort (glProgramUniform4dv)
1987 && FindProcShort (glProgramUniform4ui)
1988 && FindProcShort (glProgramUniform4uiv)
1989 && FindProcShort (glProgramUniformMatrix2fv)
1990 && FindProcShort (glProgramUniformMatrix3fv)
1991 && FindProcShort (glProgramUniformMatrix4fv)
1992 && FindProcShort (glProgramUniformMatrix2dv)
1993 && FindProcShort (glProgramUniformMatrix3dv)
1994 && FindProcShort (glProgramUniformMatrix4dv)
1995 && FindProcShort (glProgramUniformMatrix2x3fv)
1996 && FindProcShort (glProgramUniformMatrix3x2fv)
1997 && FindProcShort (glProgramUniformMatrix2x4fv)
1998 && FindProcShort (glProgramUniformMatrix4x2fv)
1999 && FindProcShort (glProgramUniformMatrix3x4fv)
2000 && FindProcShort (glProgramUniformMatrix4x3fv)
2001 && FindProcShort (glProgramUniformMatrix2x3dv)
2002 && FindProcShort (glProgramUniformMatrix3x2dv)
2003 && FindProcShort (glProgramUniformMatrix2x4dv)
2004 && FindProcShort (glProgramUniformMatrix4x2dv)
2005 && FindProcShort (glProgramUniformMatrix3x4dv)
2006 && FindProcShort (glProgramUniformMatrix4x3dv)
2007 && FindProcShort (glValidateProgramPipeline)
2008 && FindProcShort (glGetProgramPipelineInfoLog);
2010 // load GL_ARB_vertex_attrib_64bit (added to OpenGL 4.1 core)
2011 const bool hasVertAttrib64bit = (IsGlGreaterEqual (4, 1) || CheckExtension ("GL_ARB_vertex_attrib_64bit"))
2012 && FindProcShort (glVertexAttribL1d)
2013 && FindProcShort (glVertexAttribL2d)
2014 && FindProcShort (glVertexAttribL3d)
2015 && FindProcShort (glVertexAttribL4d)
2016 && FindProcShort (glVertexAttribL1dv)
2017 && FindProcShort (glVertexAttribL2dv)
2018 && FindProcShort (glVertexAttribL3dv)
2019 && FindProcShort (glVertexAttribL4dv)
2020 && FindProcShort (glVertexAttribLPointer)
2021 && FindProcShort (glGetVertexAttribLdv);
2023 // load GL_ARB_viewport_array (added to OpenGL 4.1 core)
2024 const bool hasViewportArray = (IsGlGreaterEqual (4, 1) || CheckExtension ("GL_ARB_viewport_array"))
2025 && FindProcShort (glViewportArrayv)
2026 && FindProcShort (glViewportIndexedf)
2027 && FindProcShort (glViewportIndexedfv)
2028 && FindProcShort (glScissorArrayv)
2029 && FindProcShort (glScissorIndexed)
2030 && FindProcShort (glScissorIndexedv)
2031 && FindProcShort (glDepthRangeArrayv)
2032 && FindProcShort (glDepthRangeIndexed)
2033 && FindProcShort (glGetFloati_v)
2034 && FindProcShort (glGetDoublei_v);
2036 has41 = IsGlGreaterEqual (4, 1)
2037 && hasES2Compatibility
2038 && hasGetProgramBinary
2039 && hasSeparateShaderObjects
2040 && hasVertAttrib64bit
2041 && hasViewportArray;
2043 // load GL_ARB_base_instance (added to OpenGL 4.2 core)
2044 const bool hasBaseInstance = (IsGlGreaterEqual (4, 2) || CheckExtension ("GL_ARB_base_instance"))
2045 && FindProcShort (glDrawArraysInstancedBaseInstance)
2046 && FindProcShort (glDrawElementsInstancedBaseInstance)
2047 && FindProcShort (glDrawElementsInstancedBaseVertexBaseInstance);
2049 // load GL_ARB_transform_feedback_instanced (added to OpenGL 4.2 core)
2050 const bool hasTrsfFeedbackInstanced = (IsGlGreaterEqual (4, 2) || CheckExtension ("GL_ARB_transform_feedback_instanced"))
2051 && FindProcShort (glDrawTransformFeedbackInstanced)
2052 && FindProcShort (glDrawTransformFeedbackStreamInstanced);
2054 // load GL_ARB_internalformat_query (added to OpenGL 4.2 core)
2055 const bool hasInternalFormatQuery = (IsGlGreaterEqual (4, 2) || CheckExtension ("GL_ARB_internalformat_query"))
2056 && FindProcShort (glGetInternalformativ);
2058 // load GL_ARB_shader_atomic_counters (added to OpenGL 4.2 core)
2059 const bool hasShaderAtomicCounters = (IsGlGreaterEqual (4, 2) || CheckExtension ("GL_ARB_shader_atomic_counters"))
2060 && FindProcShort (glGetActiveAtomicCounterBufferiv);
2062 // load GL_ARB_shader_image_load_store (added to OpenGL 4.2 core)
2063 const bool hasShaderImgLoadStore = (IsGlGreaterEqual (4, 2) || CheckExtension ("GL_ARB_shader_image_load_store"))
2064 && FindProcShort (glBindImageTexture)
2065 && FindProcShort (glMemoryBarrier);
2067 // load GL_ARB_texture_storage (added to OpenGL 4.2 core)
2068 const bool hasTextureStorage = (IsGlGreaterEqual (4, 2) || CheckExtension ("GL_ARB_texture_storage"))
2069 && FindProcShort (glTexStorage1D)
2070 && FindProcShort (glTexStorage2D)
2071 && FindProcShort (glTexStorage3D);
2073 has42 = IsGlGreaterEqual (4, 2)
2075 && hasTrsfFeedbackInstanced
2076 && hasInternalFormatQuery
2077 && hasShaderAtomicCounters
2078 && hasShaderImgLoadStore
2079 && hasTextureStorage;
2081 has43 = IsGlGreaterEqual (4, 3)
2082 && FindProcShort (glClearBufferData)
2083 && FindProcShort (glClearBufferSubData)
2084 && FindProcShort (glDispatchCompute)
2085 && FindProcShort (glDispatchComputeIndirect)
2086 && FindProcShort (glCopyImageSubData)
2087 && FindProcShort (glFramebufferParameteri)
2088 && FindProcShort (glGetFramebufferParameteriv)
2089 && FindProcShort (glGetInternalformati64v)
2090 && FindProcShort (glInvalidateTexSubImage)
2091 && FindProcShort (glInvalidateTexImage)
2092 && FindProcShort (glInvalidateBufferSubData)
2093 && FindProcShort (glInvalidateBufferData)
2094 && FindProcShort (glInvalidateFramebuffer)
2095 && FindProcShort (glInvalidateSubFramebuffer)
2096 && FindProcShort (glMultiDrawArraysIndirect)
2097 && FindProcShort (glMultiDrawElementsIndirect)
2098 && FindProcShort (glGetProgramInterfaceiv)
2099 && FindProcShort (glGetProgramResourceIndex)
2100 && FindProcShort (glGetProgramResourceName)
2101 && FindProcShort (glGetProgramResourceiv)
2102 && FindProcShort (glGetProgramResourceLocation)
2103 && FindProcShort (glGetProgramResourceLocationIndex)
2104 && FindProcShort (glShaderStorageBlockBinding)
2105 && FindProcShort (glTexBufferRange)
2106 && FindProcShort (glTexStorage2DMultisample)
2107 && FindProcShort (glTexStorage3DMultisample)
2108 && FindProcShort (glTextureView)
2109 && FindProcShort (glBindVertexBuffer)
2110 && FindProcShort (glVertexAttribFormat)
2111 && FindProcShort (glVertexAttribIFormat)
2112 && FindProcShort (glVertexAttribLFormat)
2113 && FindProcShort (glVertexAttribBinding)
2114 && FindProcShort (glVertexBindingDivisor)
2115 && FindProcShort (glDebugMessageControl)
2116 && FindProcShort (glDebugMessageInsert)
2117 && FindProcShort (glDebugMessageCallback)
2118 && FindProcShort (glGetDebugMessageLog)
2119 && FindProcShort (glPushDebugGroup)
2120 && FindProcShort (glPopDebugGroup)
2121 && FindProcShort (glObjectLabel)
2122 && FindProcShort (glGetObjectLabel)
2123 && FindProcShort (glObjectPtrLabel)
2124 && FindProcShort (glGetObjectPtrLabel);
2126 // load GL_ARB_clear_texture (added to OpenGL 4.4 core)
2127 bool arbTexClear = (IsGlGreaterEqual (4, 4) || CheckExtension ("GL_ARB_clear_texture"))
2128 && FindProcShort (glClearTexImage)
2129 && FindProcShort (glClearTexSubImage);
2131 has44 = IsGlGreaterEqual (4, 4)
2133 && FindProcShort (glBufferStorage)
2134 && FindProcShort (glBindBuffersBase)
2135 && FindProcShort (glBindBuffersRange)
2136 && FindProcShort (glBindTextures)
2137 && FindProcShort (glBindSamplers)
2138 && FindProcShort (glBindImageTextures)
2139 && FindProcShort (glBindVertexBuffers);
2141 // initialize debug context extension
2142 if (CheckExtension ("GL_ARB_debug_output"))
2147 arbDbg = (OpenGl_ArbDbg* )(&(*myFuncs));
2149 else if (FindProc ("glDebugMessageControlARB", myFuncs->glDebugMessageControl)
2150 && FindProc ("glDebugMessageInsertARB", myFuncs->glDebugMessageInsert)
2151 && FindProc ("glDebugMessageCallbackARB", myFuncs->glDebugMessageCallback)
2152 && FindProc ("glGetDebugMessageLogARB", myFuncs->glGetDebugMessageLog))
2154 arbDbg = (OpenGl_ArbDbg* )(&(*myFuncs));
2158 && caps->contextDebug)
2160 // setup default callback
2161 myIsGlDebugCtx = Standard_True;
2162 arbDbg->glDebugMessageCallback (debugCallbackWrap, this);
2165 ::glEnable (GL_DEBUG_OUTPUT);
2167 if (caps->contextSyncDebug)
2169 ::glEnable (GL_DEBUG_OUTPUT_SYNCHRONOUS);
2174 // initialize TBO extension (ARB)
2176 && CheckExtension ("GL_ARB_texture_buffer_object")
2177 && FindProc ("glTexBufferARB", myFuncs->glTexBuffer))
2179 arbTBO = (OpenGl_ArbTBO* )(&(*myFuncs));
2181 arbTboRGB32 = CheckExtension ("GL_ARB_texture_buffer_object_rgb32");
2183 // initialize hardware instancing extension (ARB)
2185 && CheckExtension ("GL_ARB_draw_instanced")
2186 && FindProc ("glDrawArraysInstancedARB", myFuncs->glDrawArraysInstanced)
2187 && FindProc ("glDrawElementsInstancedARB", myFuncs->glDrawElementsInstanced))
2189 arbIns = (OpenGl_ArbIns* )(&(*myFuncs));
2192 // initialize FBO extension (ARB)
2195 arbFBO = (OpenGl_ArbFBO* )(&(*myFuncs));
2196 arbFBOBlit = (OpenGl_ArbFBOBlit* )(&(*myFuncs));
2197 extPDS = Standard_True; // extension for EXT, but part of ARB
2200 // initialize GS extension (EXT)
2201 if (CheckExtension ("GL_EXT_geometry_shader4")
2202 && FindProcShort (glProgramParameteriEXT))
2204 extGS = (OpenGl_ExtGS* )(&(*myFuncs));
2207 // initialize bindless texture extension (ARB)
2208 if (CheckExtension ("GL_ARB_bindless_texture")
2209 && FindProcShort (glGetTextureHandleARB)
2210 && FindProcShort (glGetTextureSamplerHandleARB)
2211 && FindProcShort (glMakeTextureHandleResidentARB)
2212 && FindProcShort (glMakeTextureHandleNonResidentARB)
2213 && FindProcShort (glGetImageHandleARB)
2214 && FindProcShort (glMakeImageHandleResidentARB)
2215 && FindProcShort (glMakeImageHandleNonResidentARB)
2216 && FindProcShort (glUniformHandleui64ARB)
2217 && FindProcShort (glUniformHandleui64vARB)
2218 && FindProcShort (glProgramUniformHandleui64ARB)
2219 && FindProcShort (glProgramUniformHandleui64vARB)
2220 && FindProcShort (glIsTextureHandleResidentARB)
2221 && FindProcShort (glIsImageHandleResidentARB)
2222 && FindProcShort (glVertexAttribL1ui64ARB)
2223 && FindProcShort (glVertexAttribL1ui64vARB)
2224 && FindProcShort (glGetVertexAttribLui64vARB))
2226 arbTexBindless = (OpenGl_ArbTexBindless* )(&(*myFuncs));
2231 checkWrongVersion (1, 2);
2238 checkWrongVersion (1, 3);
2245 checkWrongVersion (1, 4);
2252 checkWrongVersion (1, 5);
2259 core15 = (OpenGl_GlCore15* )(&(*myFuncs));
2261 core15fwd = (OpenGl_GlCore15Fwd* )(&(*myFuncs));
2265 checkWrongVersion (2, 0);
2271 const char* aGlslVer = (const char* )::glGetString (GL_SHADING_LANGUAGE_VERSION);
2272 if (aGlslVer == NULL
2273 || *aGlslVer == '\0')
2275 // broken context has been detected
2276 TCollection_ExtendedString aMsg = TCollection_ExtendedString()
2277 + "Error! OpenGL context reports version "
2278 + myGlVerMajor + "." + myGlVerMinor
2279 + " but reports wrong GLSL version";
2280 PushMessage (GL_DEBUG_SOURCE_APPLICATION,
2281 GL_DEBUG_TYPE_ERROR,
2283 GL_DEBUG_SEVERITY_HIGH,
2292 core20 = (OpenGl_GlCore20* )(&(*myFuncs));
2294 core20fwd = (OpenGl_GlCore20Fwd* )(&(*myFuncs));
2298 checkWrongVersion (2, 1);
2306 checkWrongVersion (3, 0);
2312 // MSAA RenderBuffers have been defined in OpenGL 3.0,
2313 // but MSAA Textures - only in OpenGL 3.2+
2315 && CheckExtension ("GL_ARB_texture_multisample")
2316 && FindProcShort (glTexImage2DMultisample))
2318 GLint aNbColorSamples = 0, aNbDepthSamples = 0;
2319 ::glGetIntegerv (GL_MAX_COLOR_TEXTURE_SAMPLES, &aNbColorSamples);
2320 ::glGetIntegerv (GL_MAX_DEPTH_TEXTURE_SAMPLES, &aNbDepthSamples);
2321 myMaxMsaaSamples = Min (aNbColorSamples, aNbDepthSamples);
2324 && CheckExtension ("GL_ARB_texture_storage_multisample")
2325 && FindProcShort (glTexStorage2DMultisample))
2332 checkWrongVersion (3, 1);
2337 arbTBO = (OpenGl_ArbTBO* )(&(*myFuncs));
2338 arbIns = (OpenGl_ArbIns* )(&(*myFuncs));
2340 // check whether ray tracing mode is supported
2341 myHasRayTracing = has31
2343 && arbFBOBlit != NULL;
2345 // check whether textures in ray tracing mode are supported
2346 myHasRayTracingTextures = myHasRayTracing
2347 && arbTexBindless != NULL;
2349 // check whether adaptive screen sampling in ray tracing mode is supported
2350 myHasRayTracingAdaptiveSampling = myHasRayTracing
2352 && CheckExtension ("GL_NV_shader_atomic_float");
2356 checkWrongVersion (3, 2);
2361 core32 = (OpenGl_GlCore32* )(&(*myFuncs));
2364 core32->glGenVertexArrays (1, &myDefaultVao);
2368 core32back = (OpenGl_GlCore32Back* )(&(*myFuncs));
2370 ::glGetIntegerv (GL_MAX_SAMPLES, &myMaxMsaaSamples);
2374 checkWrongVersion (3, 3);
2379 core33 = (OpenGl_GlCore33* )(&(*myFuncs));
2382 core33back = (OpenGl_GlCore33Back* )(&(*myFuncs));
2385 // initialize sampler object
2386 myTexSampler = new OpenGl_Sampler();
2387 myTexSampler->Init (*this);
2391 checkWrongVersion (4, 0);
2396 arbTboRGB32 = Standard_True; // in core since OpenGL 4.0
2400 checkWrongVersion (4, 1);
2405 core41 = (OpenGl_GlCore41* )(&(*myFuncs));
2408 core41back = (OpenGl_GlCore41Back* )(&(*myFuncs));
2413 checkWrongVersion (4, 2);
2418 core42 = (OpenGl_GlCore42* )(&(*myFuncs));
2421 core42back = (OpenGl_GlCore42Back* )(&(*myFuncs));
2426 checkWrongVersion (4, 3);
2431 core43 = (OpenGl_GlCore43* )(&(*myFuncs));
2434 core43back = (OpenGl_GlCore43Back* )(&(*myFuncs));
2439 checkWrongVersion (4, 4);
2444 core44 = (OpenGl_GlCore44* )(&(*myFuncs));
2447 core44back = (OpenGl_GlCore44Back* )(&(*myFuncs));
2452 // =======================================================================
2453 // function : MemoryInfo
2455 // =======================================================================
2456 Standard_Size OpenGl_Context::AvailableMemory() const
2458 #if !defined(GL_ES_VERSION_2_0)
2461 // this is actually information for VBO pool
2462 // however because pools are mostly shared
2463 // it can be used for total GPU memory estimations
2466 glGetIntegerv (GL_VBO_FREE_MEMORY_ATI, aMemInfo);
2467 // returned value is in KiB, however this maybe changed in future
2468 return Standard_Size(aMemInfo[0]) * 1024;
2472 // current available dedicated video memory (in KiB), currently unused GPU memory
2474 glGetIntegerv (GL_GPU_MEMORY_INFO_CURRENT_AVAILABLE_VIDMEM_NVX, &aMemInfo);
2475 return Standard_Size(aMemInfo) * 1024;
2481 // =======================================================================
2482 // function : MemoryInfo
2484 // =======================================================================
2485 TCollection_AsciiString OpenGl_Context::MemoryInfo() const
2487 TColStd_IndexedDataMapOfStringString aDict;
2490 TCollection_AsciiString aText;
2491 for (TColStd_IndexedDataMapOfStringString::Iterator anIter (aDict); anIter.More(); anIter.Next())
2493 if (!aText.IsEmpty())
2497 aText += TCollection_AsciiString(" ") + anIter.Key() + ": " + anIter.Value();
2502 // =======================================================================
2503 // function : MemoryInfo
2505 // =======================================================================
2506 void OpenGl_Context::MemoryInfo (TColStd_IndexedDataMapOfStringString& theDict) const
2508 #if defined(GL_ES_VERSION_2_0)
2510 #elif defined(__APPLE__) && !defined(MACOSX_USE_GLX)
2511 GLint aGlRendId = 0;
2512 CGLGetParameter (CGLGetCurrentContext(), kCGLCPCurrentRendererID, &aGlRendId);
2514 CGLRendererInfoObj aRendObj = NULL;
2515 CGOpenGLDisplayMask aDispMask = CGDisplayIDToOpenGLDisplayMask (kCGDirectMainDisplay);
2517 CGLQueryRendererInfo (aDispMask, &aRendObj, &aRendNb);
2518 for (GLint aRendIter = 0; aRendIter < aRendNb; ++aRendIter)
2521 if (CGLDescribeRenderer (aRendObj, aRendIter, kCGLRPRendererID, &aRendId) != kCGLNoError
2522 || aRendId != aGlRendId)
2527 //kCGLRPVideoMemoryMegabytes = 131;
2528 //kCGLRPTextureMemoryMegabytes = 132;
2530 #if MAC_OS_X_VERSION_MIN_REQUIRED >= 1070
2531 if (CGLDescribeRenderer(aRendObj, aRendIter, kCGLRPVideoMemoryMegabytes, &aVMem) == kCGLNoError)
2533 addInfo (theDict, "GPU memory", TCollection_AsciiString() + aVMem + " MiB");
2535 if (CGLDescribeRenderer(aRendObj, aRendIter, kCGLRPTextureMemoryMegabytes, &aVMem) == kCGLNoError)
2537 addInfo (theDict, "GPU Texture memory", TCollection_AsciiString() + aVMem + " MiB");
2540 if (CGLDescribeRenderer(aRendObj, aRendIter, kCGLRPVideoMemory, &aVMem) == kCGLNoError)
2542 addInfo (theDict, "GPU memory", TCollection_AsciiString() + (aVMem / (1024 * 1024)) + " MiB");
2544 if (CGLDescribeRenderer(aRendObj, aRendIter, kCGLRPTextureMemory, &aVMem) == kCGLNoError)
2546 addInfo (theDict, "GPU Texture memory", TCollection_AsciiString() + (aVMem / (1024 * 1024)) + " MiB");
2552 #if !defined(GL_ES_VERSION_2_0)
2556 memset (aValues, 0, sizeof(aValues));
2557 glGetIntegerv (GL_VBO_FREE_MEMORY_ATI, aValues);
2559 // total memory free in the pool
2560 addInfo (theDict, "GPU free memory", TCollection_AsciiString() + (aValues[0] / 1024) + " MiB");
2562 if (aValues[1] != aValues[0])
2564 // largest available free block in the pool
2565 addInfo (theDict, "Largest free block", TCollection_AsciiString() + (aValues[1] / 1024) + " MiB");
2567 if (aValues[2] != aValues[0])
2569 // total auxiliary memory free
2570 addInfo (theDict, "Free auxiliary memory", TCollection_AsciiString() + (aValues[2] / 1024) + " MiB");
2575 //current available dedicated video memory (in KiB), currently unused GPU memory
2577 glGetIntegerv (GL_GPU_MEMORY_INFO_CURRENT_AVAILABLE_VIDMEM_NVX, &aValue);
2578 addInfo (theDict, "GPU free memory", TCollection_AsciiString() + (aValue / 1024) + " MiB");
2580 // dedicated video memory, total size (in KiB) of the GPU memory
2581 GLint aDedicated = 0;
2582 glGetIntegerv (GL_GPU_MEMORY_INFO_DEDICATED_VIDMEM_NVX, &aDedicated);
2583 addInfo (theDict, "GPU memory", TCollection_AsciiString() + (aDedicated / 1024) + " MiB");
2585 // total available memory, total size (in KiB) of the memory available for allocations
2586 glGetIntegerv (GL_GPU_MEMORY_INFO_TOTAL_AVAILABLE_MEMORY_NVX, &aValue);
2587 if (aValue != aDedicated)
2589 // different only for special configurations
2590 addInfo (theDict, "Total memory", TCollection_AsciiString() + (aValue / 1024) + " MiB");
2594 else if (myFuncs->wglGetGPUInfoAMD != NULL
2595 && myFuncs->wglGetContextGPUIDAMD != NULL)
2597 GLuint aTotalMemMiB = 0;
2598 UINT anAmdId = myFuncs->wglGetContextGPUIDAMD ((HGLRC )myGContext);
2601 if (myFuncs->wglGetGPUInfoAMD (anAmdId, WGL_GPU_RAM_AMD, GL_UNSIGNED_INT, sizeof(aTotalMemMiB), &aTotalMemMiB) > 0)
2603 addInfo (theDict, "GPU memory", TCollection_AsciiString() + (int )aTotalMemMiB + " MiB");
2610 #if !defined(GL_ES_VERSION_2_0) && !defined(__APPLE__) && !defined(_WIN32)
2611 // GLX_RENDERER_VENDOR_ID_MESA
2612 if (myFuncs->glXQueryCurrentRendererIntegerMESA != NULL)
2614 unsigned int aVMemMiB = 0;
2615 if (myFuncs->glXQueryCurrentRendererIntegerMESA (GLX_RENDERER_VIDEO_MEMORY_MESA, &aVMemMiB) != False)
2617 addInfo (theDict, "GPU memory", TCollection_AsciiString() + int(aVMemMiB) + " MiB");
2623 // =======================================================================
2624 // function : DiagnosticInfo
2626 // =======================================================================
2627 void OpenGl_Context::DiagnosticInformation (TColStd_IndexedDataMapOfStringString& theDict,
2628 Graphic3d_DiagnosticInfo theFlags) const
2630 if ((theFlags & Graphic3d_DiagnosticInfo_NativePlatform) != 0)
2632 #if defined(HAVE_EGL)
2633 addInfo (theDict, "EGLVersion", ::eglQueryString ((Aspect_Display)myDisplay, EGL_VERSION));
2634 addInfo (theDict, "EGLVendor", ::eglQueryString ((Aspect_Display)myDisplay, EGL_VENDOR));
2635 addInfo (theDict, "EGLClientAPIs", ::eglQueryString ((Aspect_Display)myDisplay, EGL_CLIENT_APIS));
2636 if ((theFlags & Graphic3d_DiagnosticInfo_Extensions) != 0)
2638 addInfo (theDict, "EGLExtensions", ::eglQueryString ((Aspect_Display)myDisplay, EGL_EXTENSIONS));
2640 #elif defined(_WIN32)
2641 if ((theFlags & Graphic3d_DiagnosticInfo_Extensions) != 0
2642 && myFuncs->wglGetExtensionsStringARB != NULL)
2644 const char* aWglExts = myFuncs->wglGetExtensionsStringARB ((HDC )myWindowDC);
2645 addInfo (theDict, "WGLExtensions", aWglExts);
2647 #elif defined(__APPLE__)
2650 Display* aDisplay = (Display*)myDisplay;
2651 const int aScreen = DefaultScreen(aDisplay);
2652 addInfo (theDict, "GLXDirectRendering", ::glXIsDirect (aDisplay, (GLXContext )myGContext) ? "Yes" : "No");
2653 addInfo (theDict, "GLXVendor", ::glXQueryServerString (aDisplay, aScreen, GLX_VENDOR));
2654 addInfo (theDict, "GLXVersion", ::glXQueryServerString (aDisplay, aScreen, GLX_VERSION));
2655 if ((theFlags & Graphic3d_DiagnosticInfo_Extensions) != 0)
2657 const char* aGlxExts = ::glXQueryExtensionsString (aDisplay, aScreen);
2658 addInfo(theDict, "GLXExtensions", aGlxExts);
2661 addInfo (theDict, "GLXClientVendor", ::glXGetClientString (aDisplay, GLX_VENDOR));
2662 addInfo (theDict, "GLXClientVersion", ::glXGetClientString (aDisplay, GLX_VERSION));
2663 if ((theFlags & Graphic3d_DiagnosticInfo_Extensions) != 0)
2665 addInfo (theDict, "GLXClientExtensions", ::glXGetClientString (aDisplay, GLX_EXTENSIONS));
2670 if ((theFlags & Graphic3d_DiagnosticInfo_Device) != 0)
2672 addInfo (theDict, "GLvendor", (const char*)::glGetString (GL_VENDOR));
2673 addInfo (theDict, "GLdevice", (const char*)::glGetString (GL_RENDERER));
2674 addInfo (theDict, "GLversion", (const char*)::glGetString (GL_VERSION));
2675 addInfo (theDict, "GLSLversion", (const char*)::glGetString (GL_SHADING_LANGUAGE_VERSION));
2678 addInfo (theDict, "GLdebug", "ON");
2682 if ((theFlags & Graphic3d_DiagnosticInfo_Limits) != 0)
2684 addInfo (theDict, "Max texture size", TCollection_AsciiString(myMaxTexDim));
2685 addInfo (theDict, "Max MSAA samples", TCollection_AsciiString(myMaxMsaaSamples));
2688 if ((theFlags & Graphic3d_DiagnosticInfo_FrameBuffer) != 0)
2690 GLint aViewport[4] = {};
2691 ::glGetIntegerv (GL_VIEWPORT, aViewport);
2692 addInfo (theDict, "Viewport", TCollection_AsciiString() + aViewport[2] + "x" + aViewport[3]);
2695 if ((theFlags & Graphic3d_DiagnosticInfo_Memory) != 0)
2697 MemoryInfo (theDict);
2700 if ((theFlags & Graphic3d_DiagnosticInfo_Extensions) != 0)
2702 #if !defined(GL_ES_VERSION_2_0)
2703 if (IsGlGreaterEqual (3, 0)
2704 && myFuncs->glGetStringi != NULL)
2706 TCollection_AsciiString anExtList;
2708 ::glGetIntegerv (GL_NUM_EXTENSIONS, &anExtNb);
2709 for (GLint anIter = 0; anIter < anExtNb; ++anIter)
2711 const char* anExtension = (const char*)myFuncs->glGetStringi (GL_EXTENSIONS, (GLuint)anIter);
2712 if (!anExtList.IsEmpty())
2716 anExtList += anExtension;
2718 addInfo(theDict, "GLextensions", anExtList);
2723 addInfo (theDict, "GLextensions", (const char*)::glGetString (GL_EXTENSIONS));
2728 // =======================================================================
2729 // function : GetResource
2731 // =======================================================================
2732 const Handle(OpenGl_Resource)& OpenGl_Context::GetResource (const TCollection_AsciiString& theKey) const
2734 return mySharedResources->IsBound (theKey) ? mySharedResources->Find (theKey) : NULL_GL_RESOURCE;
2737 // =======================================================================
2738 // function : ShareResource
2740 // =======================================================================
2741 Standard_Boolean OpenGl_Context::ShareResource (const TCollection_AsciiString& theKey,
2742 const Handle(OpenGl_Resource)& theResource)
2744 if (theKey.IsEmpty() || theResource.IsNull())
2746 return Standard_False;
2748 return mySharedResources->Bind (theKey, theResource);
2751 // =======================================================================
2752 // function : ReleaseResource
2754 // =======================================================================
2755 void OpenGl_Context::ReleaseResource (const TCollection_AsciiString& theKey,
2756 const Standard_Boolean theToDelay)
2758 if (!mySharedResources->IsBound (theKey))
2762 auto& aRes = mySharedResources->Find (theKey);
2763 if (aRes->GetRefCount() > 1)
2770 myDelayed->Bind (theKey, 1);
2774 aRes->Release (this);
2775 mySharedResources->UnBind (theKey);
2779 // =======================================================================
2780 // function : ReleaseDelayed
2782 // =======================================================================
2783 void OpenGl_Context::ReleaseDelayed()
2785 // release queued elements
2786 while (!myUnusedResources->IsEmpty())
2788 myUnusedResources->First()->Release (this);
2789 myUnusedResources->RemoveFirst();
2792 // release delayed shared resources
2793 NCollection_Vector<TCollection_AsciiString> aDeadList;
2794 for (NCollection_DataMap<TCollection_AsciiString, Standard_Integer>::Iterator anIter (*myDelayed);
2795 anIter.More(); anIter.Next())
2797 if (++anIter.ChangeValue() <= 2)
2799 continue; // postpone release one more frame to ensure noone use it periodically
2802 const TCollection_AsciiString& aKey = anIter.Key();
2803 if (!mySharedResources->IsBound (aKey))
2805 // mixed unshared strategy delayed/undelayed was used!
2806 aDeadList.Append (aKey);
2810 auto& aRes = mySharedResources->ChangeFind (aKey);
2811 if (aRes->GetRefCount() > 1)
2813 // should be only 1 instance in mySharedResources
2814 // if not - resource was reused again
2815 aDeadList.Append (aKey);
2819 // release resource if no one requiested it more than 2 redraw calls
2820 aRes->Release (this);
2821 mySharedResources->UnBind (aKey);
2822 aDeadList.Append (aKey);
2825 for (Standard_Integer anIter = 0; anIter < aDeadList.Length(); ++anIter)
2827 myDelayed->UnBind (aDeadList.Value (anIter));
2831 // =======================================================================
2832 // function : BindProgram
2834 // =======================================================================
2835 Standard_Boolean OpenGl_Context::BindProgram (const Handle(OpenGl_ShaderProgram)& theProgram)
2837 if (core20fwd == NULL)
2839 return Standard_False;
2841 else if (myActiveProgram == theProgram)
2843 return Standard_True;
2846 if (theProgram.IsNull()
2847 || !theProgram->IsValid())
2849 if (!myActiveProgram.IsNull())
2851 core20fwd->glUseProgram (OpenGl_ShaderProgram::NO_PROGRAM);
2852 myActiveProgram.Nullify();
2854 return Standard_False;
2857 myActiveProgram = theProgram;
2858 core20fwd->glUseProgram (theProgram->ProgramId());
2859 return Standard_True;
2862 // =======================================================================
2863 // function : BindDefaultVao
2865 // =======================================================================
2866 void OpenGl_Context::BindDefaultVao()
2868 #if !defined(GL_ES_VERSION_2_0)
2869 if (myDefaultVao == 0
2875 core32->glBindVertexArray (myDefaultVao);
2879 // =======================================================================
2880 // function : SetDefaultFrameBuffer
2882 // =======================================================================
2883 Handle(OpenGl_FrameBuffer) OpenGl_Context::SetDefaultFrameBuffer (const Handle(OpenGl_FrameBuffer)& theFbo)
2885 Handle(OpenGl_FrameBuffer) aFbo = myDefaultFbo;
2886 myDefaultFbo = theFbo;
2890 // =======================================================================
2891 // function : SetShadingMaterial
2893 // =======================================================================
2894 void OpenGl_Context::SetShadingMaterial (const OpenGl_AspectFace* theAspect,
2895 const Handle(Graphic3d_PresentationAttributes)& theHighlight,
2896 const Standard_Boolean theUseDepthWrite)
2898 const Handle(Graphic3d_AspectFillArea3d)& anAspect = (!theHighlight.IsNull() && !theHighlight->BasicFillAreaAspect().IsNull())
2899 ? theHighlight->BasicFillAreaAspect()
2900 : theAspect->Aspect();
2902 const bool toDistinguish = anAspect->Distinguish();
2903 const bool toMapTexture = anAspect->ToMapTexture();
2904 const Graphic3d_MaterialAspect& aMatFrontSrc = anAspect->FrontMaterial();
2905 const Graphic3d_MaterialAspect& aMatBackSrc = toDistinguish
2906 ? anAspect->BackMaterial()
2908 const Quantity_Color& aFrontIntColor = anAspect->InteriorColor();
2909 const Quantity_Color& aBackIntColor = toDistinguish
2910 ? anAspect->BackInteriorColor()
2913 myMatFront.Init (aMatFrontSrc, aFrontIntColor);
2916 myMatBack.Init (aMatBackSrc, aBackIntColor);
2920 myMatBack = myMatFront;
2923 // handling transparency
2924 float aTranspFront = aMatFrontSrc.Transparency();
2925 float aTranspBack = aMatBackSrc .Transparency();
2926 if (!theHighlight.IsNull()
2927 && theHighlight->BasicFillAreaAspect().IsNull())
2929 myMatFront.SetColor (theHighlight->ColorRGBA());
2930 myMatBack .SetColor (theHighlight->ColorRGBA());
2931 aTranspFront = theHighlight->Transparency();
2932 aTranspBack = theHighlight->Transparency();
2935 GLboolean aDepthMask = GL_TRUE;
2936 if (aTranspFront != 0.0f
2937 || aTranspBack != 0.0f)
2939 // render transparent
2940 myMatFront.Diffuse.a() = 1.0f - aTranspFront;
2941 myMatBack .Diffuse.a() = 1.0f - aTranspBack;
2942 glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
2943 glEnable (GL_BLEND);
2944 aDepthMask = GL_FALSE;
2949 glBlendFunc (GL_ONE, GL_ZERO);
2950 glDisable (GL_BLEND);
2952 if (theUseDepthWrite)
2954 glDepthMask (aDepthMask);
2958 // do not update material properties in case of zero reflection mode,
2959 // because GL lighting will be disabled by OpenGl_PrimitiveArray::DrawArray() anyway.
2960 if (theAspect->IsNoLighting())
2965 if (myMatFront == myShaderManager->MaterialState().FrontMaterial()
2966 && myMatBack == myShaderManager->MaterialState().BackMaterial()
2967 && toDistinguish == myShaderManager->MaterialState().ToDistinguish()
2968 && toMapTexture == myShaderManager->MaterialState().ToMapTexture())
2973 myShaderManager->UpdateMaterialStateTo (myMatFront, myMatBack, toDistinguish, toMapTexture);
2976 // =======================================================================
2977 // function : SetColor4fv
2979 // =======================================================================
2980 void OpenGl_Context::SetColor4fv (const OpenGl_Vec4& theColor)
2982 if (!myActiveProgram.IsNull())
2984 myActiveProgram->SetUniform (this, myActiveProgram->GetStateLocation (OpenGl_OCCT_COLOR), theColor);
2986 #if !defined(GL_ES_VERSION_2_0)
2987 else if (core11 != NULL)
2989 core11->glColor4fv (theColor.GetData());
2994 // =======================================================================
2995 // function : SetTypeOfLine
2997 // =======================================================================
2998 void OpenGl_Context::SetTypeOfLine (const Aspect_TypeOfLine theType,
2999 const Standard_ShortReal theFactor)
3001 Standard_Integer aPattern = 0xFFFF;
3004 case Aspect_TOL_DASH:
3009 case Aspect_TOL_DOT:
3014 case Aspect_TOL_DOTDASH:
3019 case Aspect_TOL_EMPTY:
3020 case Aspect_TOL_SOLID:
3025 case Aspect_TOL_USERDEFINED:
3032 if (!myActiveProgram.IsNull())
3034 myActiveProgram->SetUniform (this, "uPattern", aPattern);
3035 myActiveProgram->SetUniform (this, "uFactor", theFactor);
3039 #if !defined(GL_ES_VERSION_2_0)
3040 if (aPattern != 0xFFFF)
3045 gl2psEnable (GL2PS_LINE_STIPPLE);
3051 core11fwd->glEnable (GL_LINE_STIPPLE);
3053 core11->glLineStipple (static_cast<GLint> (theFactor),
3054 static_cast<GLushort> (aPattern));
3061 core11fwd->glDisable (GL_LINE_STIPPLE);
3067 gl2psDisable (GL2PS_LINE_STIPPLE);
3074 // =======================================================================
3075 // function : SetLineWidth
3077 // =======================================================================
3078 void OpenGl_Context::SetLineWidth (const Standard_ShortReal theWidth)
3082 // glLineWidth() is still defined within Core Profile, but has no effect with values != 1.0f
3083 core11fwd->glLineWidth (theWidth * myLineWidthScale);
3088 gl2psLineWidth (theWidth);
3093 // =======================================================================
3094 // function : SetTextureMatrix
3096 // =======================================================================
3097 void OpenGl_Context::SetTextureMatrix (const Handle(Graphic3d_TextureParams)& theParams)
3099 if (theParams.IsNull())
3103 else if (!myActiveProgram.IsNull())
3105 const GLint aUniLoc = myActiveProgram->GetStateLocation (OpenGl_OCCT_TEXTURE_TRSF2D);
3106 if (aUniLoc == OpenGl_ShaderProgram::INVALID_LOCATION)
3111 // pack transformation parameters
3112 OpenGl_Vec4 aTrsf[2];
3113 aTrsf[0].xy() = theParams->Translation();
3114 aTrsf[0].zw() = theParams->Scale();
3115 aTrsf[1].x() = std::sin (-theParams->Rotation() * static_cast<float> (M_PI / 180.0));
3116 aTrsf[1].y() = std::cos (-theParams->Rotation() * static_cast<float> (M_PI / 180.0));
3117 myActiveProgram->SetUniform (this, aUniLoc, 2, aTrsf);
3121 #if !defined(GL_ES_VERSION_2_0)
3124 GLint aMatrixMode = GL_TEXTURE;
3125 ::glGetIntegerv (GL_MATRIX_MODE, &aMatrixMode);
3127 core11->glMatrixMode (GL_TEXTURE);
3128 OpenGl_Mat4 aTextureMat;
3129 const Graphic3d_Vec2& aScale = theParams->Scale();
3130 const Graphic3d_Vec2& aTrans = theParams->Translation();
3131 Graphic3d_TransformUtils::Scale (aTextureMat, aScale.x(), aScale.y(), 1.0f);
3132 Graphic3d_TransformUtils::Translate (aTextureMat, -aTrans.x(), -aTrans.y(), 0.0f);
3133 Graphic3d_TransformUtils::Rotate (aTextureMat, -theParams->Rotation(), 0.0f, 0.0f, 1.0f);
3134 core11->glLoadMatrixf (aTextureMat);
3135 core11->glMatrixMode (aMatrixMode);
3140 // =======================================================================
3141 // function : SetPointSize
3143 // =======================================================================
3144 void OpenGl_Context::SetPointSize (const Standard_ShortReal theSize)
3146 if (!myActiveProgram.IsNull())
3148 myActiveProgram->SetUniform (this, myActiveProgram->GetStateLocation (OpenGl_OCCT_POINT_SIZE), theSize);
3149 #if !defined(GL_ES_VERSION_2_0)
3150 //myContext->core11fwd->glEnable (GL_VERTEX_PROGRAM_POINT_SIZE);
3153 #if !defined(GL_ES_VERSION_2_0)
3156 core11fwd->glPointSize (theSize);
3157 if (core20fwd != NULL)
3159 //myContext->core11fwd->glDisable (GL_VERTEX_PROGRAM_POINT_SIZE);
3165 // =======================================================================
3166 // function : SetPointSpriteOrigin
3168 // =======================================================================
3169 void OpenGl_Context::SetPointSpriteOrigin()
3171 #if !defined(GL_ES_VERSION_2_0)
3172 if (core15fwd == NULL)
3177 const int aNewState = !myActiveProgram.IsNull() ? GL_UPPER_LEFT : GL_LOWER_LEFT;
3178 if (myPointSpriteOrig != aNewState)
3180 myPointSpriteOrig = aNewState;
3181 core15fwd->glPointParameteri (GL_POINT_SPRITE_COORD_ORIGIN, aNewState);
3186 // =======================================================================
3187 // function : SetGlNormalizeEnabled
3189 // =======================================================================
3190 Standard_Boolean OpenGl_Context::SetGlNormalizeEnabled (Standard_Boolean isEnabled)
3192 if (isEnabled == myIsGlNormalizeEnabled)
3194 return myIsGlNormalizeEnabled;
3197 Standard_Boolean anOldGlNormalize = myIsGlNormalizeEnabled;
3199 myIsGlNormalizeEnabled = isEnabled;
3201 #if !defined(GL_ES_VERSION_2_0)
3206 ::glEnable (GL_NORMALIZE);
3210 ::glDisable (GL_NORMALIZE);
3215 return anOldGlNormalize;
3218 // =======================================================================
3219 // function : SetPolygonMode
3221 // =======================================================================
3222 Standard_Integer OpenGl_Context::SetPolygonMode (const Standard_Integer theMode)
3224 if (myPolygonMode == theMode)
3226 return myPolygonMode;
3229 const Standard_Integer anOldPolygonMode = myPolygonMode;
3231 myPolygonMode = theMode;
3233 #if !defined(GL_ES_VERSION_2_0)
3234 ::glPolygonMode (GL_FRONT_AND_BACK, (GLenum)theMode);
3237 return anOldPolygonMode;
3240 // =======================================================================
3241 // function : SetPolygonHatchEnabled
3243 // =======================================================================
3244 bool OpenGl_Context::SetPolygonHatchEnabled (const bool theIsEnabled)
3246 if (myHatchStyles.IsNull())
3250 else if (myHatchStyles->IsEnabled() == theIsEnabled)
3252 return theIsEnabled;
3255 return myHatchStyles->SetEnabled (this, theIsEnabled);
3258 // =======================================================================
3259 // function : SetPolygonHatchStyle
3261 // =======================================================================
3262 Standard_Integer OpenGl_Context::SetPolygonHatchStyle (const Handle(Graphic3d_HatchStyle)& theStyle)
3264 if (theStyle.IsNull())
3269 if (myHatchStyles.IsNull())
3271 if (!GetResource ("OpenGl_LineAttributes", myHatchStyles))
3273 // share and register for release once the resource is no longer used
3274 myHatchStyles = new OpenGl_LineAttributes();
3275 ShareResource ("OpenGl_LineAttributes", myHatchStyles);
3278 if (myHatchStyles->TypeOfHatch() == theStyle->HatchType())
3280 return theStyle->HatchType();
3283 return myHatchStyles->SetTypeOfHatch (this, theStyle);
3286 // =======================================================================
3287 // function : ApplyModelWorldMatrix
3289 // =======================================================================
3290 void OpenGl_Context::ApplyModelWorldMatrix()
3292 if (myShaderManager->ModelWorldState().ModelWorldMatrix() != ModelWorldState.Current())
3294 myShaderManager->UpdateModelWorldStateTo (ModelWorldState.Current());
3298 // =======================================================================
3299 // function : ApplyWorldViewMatrix
3301 // =======================================================================
3302 void OpenGl_Context::ApplyWorldViewMatrix()
3304 if (myShaderManager->ModelWorldState().ModelWorldMatrix() != THE_IDENTITY_MATRIX)
3306 myShaderManager->UpdateModelWorldStateTo (THE_IDENTITY_MATRIX);
3308 if (myShaderManager->WorldViewState().WorldViewMatrix() != WorldViewState.Current())
3310 myShaderManager->UpdateWorldViewStateTo (WorldViewState.Current());
3314 // =======================================================================
3315 // function : ApplyModelViewMatrix
3317 // =======================================================================
3318 void OpenGl_Context::ApplyModelViewMatrix()
3320 if (myShaderManager->ModelWorldState().ModelWorldMatrix() != ModelWorldState.Current())
3322 myShaderManager->UpdateModelWorldStateTo (ModelWorldState.Current());
3324 if (myShaderManager->WorldViewState().WorldViewMatrix() != WorldViewState.Current())
3326 myShaderManager->UpdateWorldViewStateTo (WorldViewState.Current());
3330 // =======================================================================
3331 // function : ApplyProjectionMatrix
3333 // =======================================================================
3334 void OpenGl_Context::ApplyProjectionMatrix()
3336 if (myShaderManager->ProjectionState().ProjectionMatrix() != ProjectionState.Current())
3338 myShaderManager->UpdateProjectionStateTo (ProjectionState.Current());
3342 // =======================================================================
3343 // function : EnableFeatures
3345 // =======================================================================
3346 void OpenGl_Context::EnableFeatures() const
3351 // =======================================================================
3352 // function : DisableFeatures
3354 // =======================================================================
3355 void OpenGl_Context::DisableFeatures() const
3357 #if !defined(GL_ES_VERSION_2_0)
3358 glPixelTransferi (GL_MAP_COLOR, GL_FALSE);
3362 * Disable stuff that's likely to slow down glDrawPixels.
3363 * (Omit as much of this as possible, when you know in advance
3364 * that the OpenGL state will already be set correctly.)
3366 glDisable(GL_DITHER);
3367 glDisable(GL_BLEND);
3368 glDisable(GL_DEPTH_TEST);
3369 glDisable(GL_TEXTURE_2D);
3370 glDisable(GL_STENCIL_TEST);
3372 #if !defined(GL_ES_VERSION_2_0)
3373 glDisable(GL_LIGHTING);
3374 glDisable(GL_ALPHA_TEST);
3376 glDisable(GL_LOGIC_OP);
3377 glDisable(GL_TEXTURE_1D);
3379 glPixelTransferi(GL_MAP_COLOR, GL_FALSE);
3380 glPixelTransferi(GL_RED_SCALE, 1);
3381 glPixelTransferi(GL_RED_BIAS, 0);
3382 glPixelTransferi(GL_GREEN_SCALE, 1);
3383 glPixelTransferi(GL_GREEN_BIAS, 0);
3384 glPixelTransferi(GL_BLUE_SCALE, 1);
3385 glPixelTransferi(GL_BLUE_BIAS, 0);
3386 glPixelTransferi(GL_ALPHA_SCALE, 1);
3387 glPixelTransferi(GL_ALPHA_BIAS, 0);
3390 * Disable extensions that could slow down glDrawPixels.
3391 * (Actually, you should check for the presence of the proper
3392 * extension before making these calls. I've omitted that
3393 * code for simplicity.)
3396 if ((myGlVerMajor >= 1) && (myGlVerMinor >= 2))
3398 #ifdef GL_EXT_convolution
3399 if (CheckExtension ("GL_CONVOLUTION_1D_EXT"))
3400 glDisable(GL_CONVOLUTION_1D_EXT);
3402 if (CheckExtension ("GL_CONVOLUTION_2D_EXT"))
3403 glDisable(GL_CONVOLUTION_2D_EXT);
3405 if (CheckExtension ("GL_SEPARABLE_2D_EXT"))
3406 glDisable(GL_SEPARABLE_2D_EXT);
3409 #ifdef GL_EXT_histogram
3410 if (CheckExtension ("GL_SEPARABLE_2D_EXT"))
3411 glDisable(GL_HISTOGRAM_EXT);
3413 if (CheckExtension ("GL_MINMAX_EXT"))
3414 glDisable(GL_MINMAX_EXT);
3417 #ifdef GL_EXT_texture3D
3418 if (CheckExtension ("GL_TEXTURE_3D_EXT"))
3419 glDisable(GL_TEXTURE_3D_EXT);