1 // Created on: 2011-09-20
2 // Created by: Sergey ZERCHANINOV
3 // Copyright (c) 2011-2014 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.
16 #include <OpenGl_GlCore15.hxx>
18 #include <InterfaceGraphic.hxx>
20 #include <OpenGl_AspectLine.hxx>
21 #include <OpenGl_AspectFace.hxx>
22 #include <OpenGl_AspectMarker.hxx>
23 #include <OpenGl_AspectText.hxx>
24 #include <OpenGl_Context.hxx>
25 #include <OpenGl_Element.hxx>
26 #include <OpenGl_FrameBuffer.hxx>
27 #include <OpenGl_Structure.hxx>
28 #include <OpenGl_Sampler.hxx>
29 #include <OpenGl_Texture.hxx>
30 #include <OpenGl_Utils.hxx>
31 #include <OpenGl_View.hxx>
32 #include <OpenGl_Workspace.hxx>
34 #include <Graphic3d_TextureParams.hxx>
36 #if defined(_WIN32) && defined(HAVE_VIDEOCAPTURE)
37 #include <OpenGl_AVIWriter.hxx>
40 IMPLEMENT_STANDARD_HANDLE(OpenGl_Workspace,OpenGl_Window)
41 IMPLEMENT_STANDARD_RTTIEXT(OpenGl_Workspace,OpenGl_Window)
45 static const TEL_COLOUR THE_WHITE_COLOR = { { 1.0f, 1.0f, 1.0f, 1.0f } };
46 static const OpenGl_Vec4 THE_BLACK_COLOR (0.0f, 0.0f, 0.0f, 1.0f);
48 static const OpenGl_AspectLine myDefaultAspectLine;
49 static const OpenGl_AspectFace myDefaultAspectFace;
50 static const OpenGl_AspectMarker myDefaultAspectMarker;
51 static const OpenGl_AspectText myDefaultAspectText;
53 static const OpenGl_TextParam myDefaultTextParam =
55 16, Graphic3d_HTA_LEFT, Graphic3d_VTA_BOTTOM
58 static const OpenGl_Matrix myDefaultMatrix =
60 {{ 1.0F, 0.0F, 0.0F, 0.0F },
61 { 0.0F, 1.0F, 0.0F, 0.0F },
62 { 0.0F, 0.0F, 1.0F, 0.0F },
63 { 0.0F, 0.0F, 0.0F, 1.0F }}
68 // =======================================================================
71 // =======================================================================
72 void OpenGl_Material::Init (const OPENGL_SURF_PROP& theProp)
75 if (theProp.color_mask & OPENGL_AMBIENT_MASK)
77 const float* aSrcAmb = theProp.isphysic ? theProp.ambcol.rgb : theProp.matcol.rgb;
78 Ambient = OpenGl_Vec4 (aSrcAmb[0] * theProp.amb,
79 aSrcAmb[1] * theProp.amb,
80 aSrcAmb[2] * theProp.amb,
85 Ambient = THE_BLACK_COLOR;
88 // diffusion component
89 if (theProp.color_mask & OPENGL_DIFFUSE_MASK)
91 const float* aSrcDif = theProp.isphysic ? theProp.difcol.rgb : theProp.matcol.rgb;
92 Diffuse = OpenGl_Vec4 (aSrcDif[0] * theProp.diff,
93 aSrcDif[1] * theProp.diff,
94 aSrcDif[2] * theProp.diff,
99 Diffuse = THE_BLACK_COLOR;
102 // specular component
103 if (theProp.color_mask & OPENGL_SPECULAR_MASK)
105 const float* aSrcSpe = theProp.isphysic ? theProp.speccol.rgb : THE_WHITE_COLOR.rgb;
106 Specular = OpenGl_Vec4 (aSrcSpe[0] * theProp.spec,
107 aSrcSpe[1] * theProp.spec,
108 aSrcSpe[2] * theProp.spec,
113 Specular = THE_BLACK_COLOR;
116 // emission component
117 if (theProp.color_mask & OPENGL_EMISSIVE_MASK)
119 const float* aSrcEms = theProp.isphysic ? theProp.emscol.rgb : theProp.matcol.rgb;
120 Emission = OpenGl_Vec4 (aSrcEms[0] * theProp.emsv,
121 aSrcEms[1] * theProp.emsv,
122 aSrcEms[2] * theProp.emsv,
127 Emission = THE_BLACK_COLOR;
130 ChangeShine() = theProp.shine;
131 ChangeTransparency() = theProp.trans;
134 // =======================================================================
135 // function : OpenGl_Workspace
137 // =======================================================================
138 OpenGl_Workspace::OpenGl_Workspace (const Handle(OpenGl_GraphicDriver)& theDriver,
139 const CALL_DEF_WINDOW& theCWindow,
140 Aspect_RenderingContext theGContext,
141 const Handle(OpenGl_Caps)& theCaps,
142 const Handle(OpenGl_Context)& theShareCtx)
143 : OpenGl_Window (theDriver, theCWindow, theGContext, theCaps, theShareCtx),
145 HighlightColor (&THE_WHITE_COLOR),
147 myComputeInitStatus (OpenGl_RT_NONE),
148 myIsRaytraceDataValid (Standard_False),
149 myIsRaytraceWarnTextures (Standard_False),
150 myViewModificationStatus (0),
151 myLayersModificationStatus (0),
153 myRaytraceFilter (new OpenGl_RaytraceFilter()),
154 myToRedrawGL (Standard_True),
155 myAntiAliasingMode (3),
156 myTransientDrawToFront (Standard_True),
157 myBackBufferRestored (Standard_False),
158 myIsImmediateDrawn (Standard_False),
159 myUseZBuffer (Standard_False),
160 myUseDepthTest (Standard_True),
161 myUseGLLight (Standard_True),
162 myIsCullingEnabled (Standard_False),
165 AspectLine_set (&myDefaultAspectLine),
166 AspectLine_applied (NULL),
167 AspectFace_set (&myDefaultAspectFace),
168 AspectFace_applied (NULL),
169 AspectMarker_set (&myDefaultAspectMarker),
170 AspectMarker_applied (NULL),
171 AspectText_set (&myDefaultAspectText),
172 AspectText_applied (NULL),
173 TextParam_set (&myDefaultTextParam),
174 TextParam_applied (NULL),
175 ViewMatrix_applied (&myDefaultMatrix),
176 StructureMatrix_applied (&myDefaultMatrix),
177 myCullingMode (TelCullUndefined),
178 myModelViewMatrix (myDefaultMatrix),
179 PolygonOffset_applied (THE_DEFAULT_POFFSET)
181 myGlContext->core11fwd->glPixelStorei (GL_UNPACK_ALIGNMENT, 1);
183 if (!myGlContext->GetResource ("OpenGl_LineAttributes", myLineAttribs))
185 // share and register for release once the resource is no longer used
186 myLineAttribs = new OpenGl_LineAttributes();
187 myGlContext->ShareResource ("OpenGl_LineAttributes", myLineAttribs);
188 myLineAttribs->Init (myGlContext);
191 // General initialization of the context
193 #if !defined(GL_ES_VERSION_2_0)
194 // Eviter d'avoir les faces mal orientees en noir.
195 // Pourrait etre utiliser pour detecter les problemes d'orientation
196 glLightModeli ((GLenum )GL_LIGHT_MODEL_TWO_SIDE, GL_TRUE);
198 // Optimisation pour le Fog et l'antialiasing
199 glHint (GL_FOG_HINT, GL_FASTEST);
200 glHint (GL_POINT_SMOOTH_HINT, GL_FASTEST);
201 glHint (GL_LINE_SMOOTH_HINT, GL_FASTEST);
202 glHint (GL_POLYGON_SMOOTH_HINT, GL_FASTEST);
206 const char* anAaEnv = ::getenv ("CALL_OPENGL_ANTIALIASING_MODE");
210 if (sscanf (anAaEnv, "%d", &v) > 0) myAntiAliasingMode = v;
214 // =======================================================================
215 // function : SetImmediateModeDrawToFront
217 // =======================================================================
218 Standard_Boolean OpenGl_Workspace::SetImmediateModeDrawToFront (const Standard_Boolean theDrawToFrontBuffer)
220 const Standard_Boolean aPrevMode = myTransientDrawToFront;
221 myTransientDrawToFront = theDrawToFrontBuffer;
225 // =======================================================================
226 // function : ~OpenGl_Workspace
228 // =======================================================================
229 OpenGl_Workspace::~OpenGl_Workspace()
231 if (!myLineAttribs.IsNull())
233 myLineAttribs.Nullify();
234 myGlContext->ReleaseResource ("OpenGl_LineAttributes", Standard_True);
237 ReleaseRaytraceResources();
240 // =======================================================================
241 // function : Activate
243 // =======================================================================
244 Standard_Boolean OpenGl_Workspace::Activate()
246 if (!OpenGl_Window::Activate())
247 return Standard_False;
249 ViewMatrix_applied = &myDefaultMatrix;
250 StructureMatrix_applied = &myDefaultMatrix;
252 ResetAppliedAspect();
254 return Standard_True;
257 //=======================================================================
258 //function : ResetAppliedAspect
259 //purpose : Sets default values of GL parameters in accordance with default aspects
260 //=======================================================================
261 void OpenGl_Workspace::ResetAppliedAspect()
263 NamedStatus = !myTextureBound.IsNull() ? OPENGL_NS_TEXTURE : 0;
264 HighlightColor = &THE_WHITE_COLOR;
265 AspectLine_set = &myDefaultAspectLine;
266 AspectLine_applied = NULL;
267 AspectFace_set = &myDefaultAspectFace;
268 AspectFace_applied = NULL;
269 AspectMarker_set = &myDefaultAspectMarker;
270 AspectMarker_applied = NULL;
271 AspectText_set = &myDefaultAspectText;
272 AspectText_applied = NULL;
273 TextParam_set = &myDefaultTextParam;
274 TextParam_applied = NULL;
275 PolygonOffset_applied = THE_DEFAULT_POFFSET;
276 myCullingMode = TelCullUndefined;
278 AspectLine(Standard_True);
279 AspectFace(Standard_True);
280 AspectMarker(Standard_True);
281 AspectText(Standard_True);
284 // =======================================================================
285 // function : DisableTexture
287 // =======================================================================
288 Handle(OpenGl_Texture) OpenGl_Workspace::DisableTexture()
290 if (myTextureBound.IsNull())
292 return myTextureBound;
295 #if !defined(GL_ES_VERSION_2_0)
296 // reset texture matrix because some code may expect it is identity
297 GLint aMatrixMode = GL_TEXTURE;
298 glGetIntegerv (GL_MATRIX_MODE, &aMatrixMode);
299 glMatrixMode (GL_TEXTURE);
301 glMatrixMode (aMatrixMode);
304 myTextureBound->Unbind (myGlContext);
305 switch (myTextureBound->GetTarget())
307 #if !defined(GL_ES_VERSION_2_0)
311 if (myTextureBound->GetParams()->GenMode() != GL_NONE)
313 glDisable (GL_TEXTURE_GEN_S);
315 glDisable (GL_TEXTURE_1D);
321 #if !defined(GL_ES_VERSION_2_0)
322 if (myTextureBound->GetParams()->GenMode() != GL_NONE)
324 glDisable (GL_TEXTURE_GEN_S);
325 glDisable (GL_TEXTURE_GEN_T);
326 if (myTextureBound->GetParams()->GenMode() == Graphic3d_TOTM_SPRITE)
328 glDisable (GL_POINT_SPRITE);
331 glDisable (GL_TEXTURE_2D);
338 Handle(OpenGl_Texture) aPrevTexture = myTextureBound;
339 myTextureBound.Nullify();
343 // =======================================================================
344 // function : setTextureParams
346 // =======================================================================
347 void OpenGl_Workspace::setTextureParams (Handle(OpenGl_Texture)& theTexture,
348 const Handle(Graphic3d_TextureParams)& theParams)
350 const Handle(Graphic3d_TextureParams)& aParams = theParams.IsNull() ? theTexture->GetParams() : theParams;
351 if (aParams.IsNull())
356 #if !defined(GL_ES_VERSION_2_0)
357 GLint aMatrixMode = GL_TEXTURE;
358 glGetIntegerv (GL_MATRIX_MODE, &aMatrixMode);
360 // setup texture matrix
361 glMatrixMode (GL_TEXTURE);
362 OpenGl_Mat4 aTextureMat;
363 const Graphic3d_Vec2& aScale = aParams->Scale();
364 const Graphic3d_Vec2& aTrans = aParams->Translation();
365 OpenGl_Utils::Scale (aTextureMat, aScale.x(), aScale.y(), 1.0f);
366 OpenGl_Utils::Translate (aTextureMat, -aTrans.x(), -aTrans.y(), 0.0f);
367 OpenGl_Utils::Rotate (aTextureMat, -aParams->Rotation(), 0.0f, 0.0f, 1.0f);
368 glLoadMatrixf (aTextureMat);
370 GLint anEnvMode = GL_MODULATE; // lighting mode
371 if (!aParams->IsModulate())
373 anEnvMode = GL_DECAL;
374 if (theTexture->GetFormat() == GL_ALPHA
375 || theTexture->GetFormat() == GL_LUMINANCE)
377 anEnvMode = GL_REPLACE;
381 // setup generation of texture coordinates
382 switch (aParams->GenMode())
384 case Graphic3d_TOTM_OBJECT:
386 glTexGeni (GL_S, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
387 glTexGenfv (GL_S, GL_OBJECT_PLANE, aParams->GenPlaneS().GetData());
388 if (theTexture->GetTarget() != GL_TEXTURE_1D)
390 glTexGeni (GL_T, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
391 glTexGenfv (GL_T, GL_OBJECT_PLANE, aParams->GenPlaneT().GetData());
395 case Graphic3d_TOTM_SPHERE:
397 glTexGeni (GL_S, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
398 if (theTexture->GetTarget() != GL_TEXTURE_1D)
400 glTexGeni (GL_T, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
404 case Graphic3d_TOTM_EYE:
406 myGlContext->WorldViewState.Push();
408 myGlContext->WorldViewState.SetIdentity();
409 myGlContext->ApplyWorldViewMatrix();
411 glTexGeni (GL_S, GL_TEXTURE_GEN_MODE, GL_EYE_LINEAR);
412 glTexGenfv (GL_S, GL_EYE_PLANE, aParams->GenPlaneS().GetData());
414 if (theTexture->GetTarget() != GL_TEXTURE_1D)
416 glTexGeni (GL_T, GL_TEXTURE_GEN_MODE, GL_EYE_LINEAR);
417 glTexGenfv (GL_T, GL_EYE_PLANE, aParams->GenPlaneT().GetData());
420 myGlContext->WorldViewState.Pop();
424 case Graphic3d_TOTM_SPRITE:
426 if (GetGlContext()->core20 != NULL)
428 glEnable (GL_POINT_SPRITE);
429 glTexEnvi (GL_POINT_SPRITE, GL_COORD_REPLACE, GL_TRUE);
430 anEnvMode = GL_REPLACE;
431 GetGlContext()->core15->glPointParameteri (GL_POINT_SPRITE_COORD_ORIGIN, GL_LOWER_LEFT);
435 case Graphic3d_TOTM_MANUAL:
440 glTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, anEnvMode);
443 // get active sampler object to override default texture parameters
444 const Handle(OpenGl_Sampler)& aSampler = myGlContext->TextureSampler();
446 // setup texture filtering and wrapping
447 //if (theTexture->GetParams() != theParams)
448 const GLenum aFilter = (aParams->Filter() == Graphic3d_TOTF_NEAREST) ? GL_NEAREST : GL_LINEAR;
449 const GLenum aWrapMode = aParams->IsRepeat() ? GL_REPEAT : myGlContext->TextureWrapClamp();
450 switch (theTexture->GetTarget())
452 #if !defined(GL_ES_VERSION_2_0)
455 if (aSampler.IsNull() || !aSampler->IsValid())
457 glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, aFilter);
458 glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, aFilter);
459 glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_WRAP_S, aWrapMode);
463 aSampler->SetParameter (*myGlContext, GL_TEXTURE_MAG_FILTER, aFilter);
464 aSampler->SetParameter (*myGlContext, GL_TEXTURE_MIN_FILTER, aFilter);
465 aSampler->SetParameter (*myGlContext, GL_TEXTURE_WRAP_S, aWrapMode);
473 GLenum aFilterMin = aFilter;
474 if (theTexture->HasMipmaps())
476 aFilterMin = GL_NEAREST_MIPMAP_NEAREST;
477 if (aParams->Filter() == Graphic3d_TOTF_BILINEAR)
479 aFilterMin = GL_LINEAR_MIPMAP_NEAREST;
481 else if (aParams->Filter() == Graphic3d_TOTF_TRILINEAR)
483 aFilterMin = GL_LINEAR_MIPMAP_LINEAR;
486 if (myGlContext->extAnis)
488 // setup degree of anisotropy filter
489 const GLint aMaxDegree = myGlContext->MaxDegreeOfAnisotropy();
491 switch (aParams->AnisoFilter())
493 case Graphic3d_LOTA_QUALITY:
495 aDegree = aMaxDegree;
498 case Graphic3d_LOTA_MIDDLE:
500 aDegree = (aMaxDegree <= 4) ? 2 : (aMaxDegree / 2);
503 case Graphic3d_LOTA_FAST:
508 case Graphic3d_LOTA_OFF:
516 if (aSampler.IsNull() || !aSampler->IsValid())
518 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, aDegree);
522 aSampler->SetParameter (*myGlContext, GL_TEXTURE_MAX_ANISOTROPY_EXT, aDegree);
527 if (aSampler.IsNull() || !aSampler->IsValid())
529 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, aFilterMin);
530 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, aFilter);
531 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, aWrapMode);
532 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, aWrapMode);
536 aSampler->SetParameter (*myGlContext, GL_TEXTURE_MIN_FILTER, aFilterMin);
537 aSampler->SetParameter (*myGlContext, GL_TEXTURE_MAG_FILTER, aFilter);
538 aSampler->SetParameter (*myGlContext, GL_TEXTURE_WRAP_S, aWrapMode);
539 aSampler->SetParameter (*myGlContext, GL_TEXTURE_WRAP_T, aWrapMode);
547 switch (theTexture->GetTarget())
549 #if !defined(GL_ES_VERSION_2_0)
552 if (aParams->GenMode() != Graphic3d_TOTM_MANUAL)
554 glEnable (GL_TEXTURE_GEN_S);
556 glEnable (GL_TEXTURE_1D);
562 #if !defined(GL_ES_VERSION_2_0)
563 if (aParams->GenMode() != Graphic3d_TOTM_MANUAL)
565 glEnable (GL_TEXTURE_GEN_S);
566 glEnable (GL_TEXTURE_GEN_T);
568 glEnable (GL_TEXTURE_2D);
575 #if !defined(GL_ES_VERSION_2_0)
576 glMatrixMode (aMatrixMode); // turn back active matrix
578 theTexture->SetParams (aParams);
581 // =======================================================================
582 // function : EnableTexture
584 // =======================================================================
585 Handle(OpenGl_Texture) OpenGl_Workspace::EnableTexture (const Handle(OpenGl_Texture)& theTexture,
586 const Handle(Graphic3d_TextureParams)& theParams)
588 if (theTexture.IsNull() || !theTexture->IsValid())
590 return DisableTexture();
593 if (myTextureBound == theTexture
594 && (theParams.IsNull() || theParams == theTexture->GetParams()))
597 return myTextureBound;
600 Handle(OpenGl_Texture) aPrevTexture = DisableTexture();
601 myTextureBound = theTexture;
602 myTextureBound->Bind (myGlContext);
603 setTextureParams (myTextureBound, theParams);
605 // If custom sampler object is available it will be
606 // used for overriding default texture parameters
607 const Handle(OpenGl_Sampler)& aSampler = myGlContext->TextureSampler();
609 if (!aSampler.IsNull() && aSampler->IsValid())
611 aSampler->Bind (*myGlContext);
617 // =======================================================================
620 // =======================================================================
621 void OpenGl_Workspace::Redraw (const Graphic3d_CView& theCView,
622 const Aspect_CLayer2d& theCUnderLayer,
623 const Aspect_CLayer2d& theCOverLayer)
631 myIsCullingEnabled = theCView.IsCullingEnabled;
633 // release pending GL resources
634 Handle(OpenGl_Context) aGlCtx = GetGlContext();
635 aGlCtx->ReleaseDelayed();
637 // fetch OpenGl context state
638 aGlCtx->FetchState();
640 Tint toSwap = (aGlCtx->IsRender() && !aGlCtx->caps->buffersNoSwap) ? 1 : 0; // swap buffers
641 OpenGl_FrameBuffer* aFrameBuffer = (OpenGl_FrameBuffer* )theCView.ptrFBO;
642 if (aFrameBuffer != NULL)
644 aFrameBuffer->SetupViewport (aGlCtx);
645 toSwap = 0; // no need to swap buffers
649 aGlCtx->core11fwd->glViewport (0, 0, myWidth, myHeight);
652 myToRedrawGL = Standard_True;
653 if (theCView.RenderParams.Method == Graphic3d_RM_RAYTRACING
654 && myComputeInitStatus != OpenGl_RT_FAIL)
656 if (UpdateRaytraceGeometry (OpenGl_GUM_CHECK) && myIsRaytraceDataValid)
658 myToRedrawGL = Standard_False;
660 // Only non-raytracable structures should be rendered in OpenGL mode.
661 Handle(OpenGl_RenderFilter) aRenderFilter = GetRenderFilter();
662 myRaytraceFilter->SetPrevRenderFilter (aRenderFilter);
663 SetRenderFilter (myRaytraceFilter);
665 Standard_Integer aSizeX = aFrameBuffer != NULL ? aFrameBuffer->GetVPSizeX() : myWidth;
666 Standard_Integer aSizeY = aFrameBuffer != NULL ? aFrameBuffer->GetVPSizeY() : myHeight;
668 if (myOpenGlFBO.IsNull())
670 myOpenGlFBO = new OpenGl_FrameBuffer();
672 if (myOpenGlFBO->GetVPSizeX() != aSizeX
673 || myOpenGlFBO->GetVPSizeY() != aSizeY)
675 myOpenGlFBO->Init (aGlCtx, aSizeX, aSizeY);
678 // OverLayer and UnderLayer shouldn't be drawn by OpenGL.
679 // They will be drawn during ray-tracing.
680 Aspect_CLayer2d anEmptyCLayer;
681 anEmptyCLayer.ptrLayer = NULL;
683 myOpenGlFBO->BindBuffer (aGlCtx);
684 redraw1 (theCView, anEmptyCLayer, anEmptyCLayer, 0);
685 myOpenGlFBO->UnbindBuffer (aGlCtx);
687 const Standard_Boolean isImmediate = myView->HasImmediateStructures();
688 Raytrace (theCView, aSizeX, aSizeY, isImmediate ? 0 : toSwap,
689 theCOverLayer, theCUnderLayer, aFrameBuffer);
693 RedrawImmediate (theCView, theCUnderLayer, theCOverLayer, Standard_True);
696 SetRenderFilter (aRenderFilter);
698 theCView.WasRedrawnGL = Standard_False;
704 // draw entire frame using normal OpenGL pipeline
705 if (aFrameBuffer != NULL)
707 aFrameBuffer->BindBuffer (aGlCtx);
710 const Standard_Boolean isImmediate = myView->HasImmediateStructures();
711 redraw1 (theCView, theCUnderLayer, theCOverLayer, isImmediate ? 0 : toSwap);
714 RedrawImmediate (theCView, theCUnderLayer, theCOverLayer, Standard_True);
717 theCView.WasRedrawnGL = Standard_True;
720 if (aFrameBuffer != NULL)
722 aFrameBuffer->UnbindBuffer (aGlCtx);
723 // move back original viewport
724 aGlCtx->core11fwd->glViewport (0, 0, myWidth, myHeight);
727 #if defined(_WIN32) && defined(HAVE_VIDEOCAPTURE)
728 if (OpenGl_AVIWriter_AllowWriting (theCView.DefWindow.XWindow))
731 glGetIntegerv (GL_VIEWPORT, params);
732 int nWidth = params[2] & ~0x7;
733 int nHeight = params[3] & ~0x7;
735 const int nBitsPerPixel = 24;
736 GLubyte* aDumpData = new GLubyte[nWidth * nHeight * nBitsPerPixel / 8];
738 glPixelStorei (GL_PACK_ALIGNMENT, 1);
739 glReadPixels (0, 0, nWidth, nHeight, GL_BGR_EXT, GL_UNSIGNED_BYTE, aDumpData);
740 OpenGl_AVIWriter_AVIWriter (aDumpData, nWidth, nHeight, nBitsPerPixel);
745 // reset render mode state
746 aGlCtx->FetchState();
749 // =======================================================================
750 // function : redraw1
752 // =======================================================================
753 void OpenGl_Workspace::redraw1 (const Graphic3d_CView& theCView,
754 const Aspect_CLayer2d& theCUnderLayer,
755 const Aspect_CLayer2d& theCOverLayer,
763 // request reset of material
764 NamedStatus |= OPENGL_NS_RESMAT;
766 GLbitfield toClear = GL_COLOR_BUFFER_BIT;
769 glDepthFunc (GL_LEQUAL);
770 glDepthMask (GL_TRUE);
773 glEnable (GL_DEPTH_TEST);
777 glDisable (GL_DEPTH_TEST);
780 #if !defined(GL_ES_VERSION_2_0)
783 glClearDepthf (1.0f);
785 toClear |= GL_DEPTH_BUFFER_BIT;
789 glDisable (GL_DEPTH_TEST);
794 // set background to black
795 glClearColor (0.0f, 0.0f, 0.0f, 0.0f);
796 toClear |= GL_DEPTH_BUFFER_BIT; //
800 if (NamedStatus & OPENGL_NS_WHITEBACK)
802 // set background to white
803 glClearColor (1.0f, 1.0f, 1.0f, 1.0f);
804 toClear |= GL_DEPTH_BUFFER_BIT;
808 glClearColor (myBgColor.rgb[0], myBgColor.rgb[1], myBgColor.rgb[2], 0.0f);
813 Handle(OpenGl_Workspace) aWS (this);
814 myView->Render (myPrintContext, aWS, theCView, theCUnderLayer, theCOverLayer, Standard_False);
819 GetGlContext()->SwapBuffers();
820 myBackBufferRestored = Standard_False;
821 myIsImmediateDrawn = Standard_False;
826 myBackBufferRestored = Standard_True;//
827 myIsImmediateDrawn = Standard_False;//
831 // =======================================================================
832 // function : copyBackToFront
834 // =======================================================================
835 void OpenGl_Workspace::copyBackToFront()
837 #if !defined(GL_ES_VERSION_2_0)
839 OpenGl_Mat4 aProjectMat;
840 OpenGl_Utils::Ortho2D<Standard_ShortReal> (aProjectMat,
841 0.f, static_cast<GLfloat> (myWidth), 0.f, static_cast<GLfloat> (myHeight));
843 myGlContext->WorldViewState.Push();
844 myGlContext->ProjectionState.Push();
846 myGlContext->WorldViewState.SetIdentity();
847 myGlContext->ProjectionState.SetCurrent (aProjectMat);
849 myGlContext->ApplyProjectionMatrix();
850 myGlContext->ApplyWorldViewMatrix();
854 glDrawBuffer (GL_FRONT);
855 glReadBuffer (GL_BACK);
857 glRasterPos2i (0, 0);
858 glCopyPixels (0, 0, myWidth + 1, myHeight + 1, GL_COLOR);
859 //glCopyPixels (0, 0, myWidth + 1, myHeight + 1, GL_DEPTH);
863 myGlContext->WorldViewState.Pop();
864 myGlContext->ProjectionState.Pop();
865 myGlContext->ApplyProjectionMatrix();
866 glDrawBuffer (GL_BACK);
869 myIsImmediateDrawn = Standard_False;
872 // =======================================================================
873 // function : DisplayCallback
875 // =======================================================================
876 void OpenGl_Workspace::DisplayCallback (const Graphic3d_CView& theCView,
877 Standard_Integer theReason)
879 if (theCView.GDisplayCB == NULL)
884 Aspect_GraphicCallbackStruct aCallData;
885 aCallData.reason = theReason;
886 aCallData.glContext = GetGlContext();
887 aCallData.wsID = theCView.WsId;
888 aCallData.viewID = theCView.ViewId;
889 theCView.GDisplayCB (theCView.DefWindow.XWindow, theCView.GClientData, &aCallData);
892 // =======================================================================
893 // function : RedrawImmediate
895 // =======================================================================
896 void OpenGl_Workspace::RedrawImmediate (const Graphic3d_CView& theCView,
897 const Aspect_CLayer2d& theCUnderLayer,
898 const Aspect_CLayer2d& theCOverLayer,
899 const Standard_Boolean theToForce)
906 GLboolean isDoubleBuffer = GL_FALSE;
907 #if !defined(GL_ES_VERSION_2_0)
908 glGetBooleanv (GL_DOUBLEBUFFER, &isDoubleBuffer);
910 if (!myView->HasImmediateStructures())
913 || !myIsImmediateDrawn)
915 myIsImmediateDrawn = Standard_False;
919 if (myBackBufferRestored
927 Redraw (theCView, theCUnderLayer, theCOverLayer);
932 if (isDoubleBuffer && myTransientDrawToFront)
934 if (!myBackBufferRestored)
936 Redraw (theCView, theCUnderLayer, theCOverLayer);
940 MakeFrontBufCurrent();
944 myBackBufferRestored = Standard_False;
946 myIsImmediateDrawn = Standard_True;
948 Handle(OpenGl_Workspace) aWS (this);
952 glDepthFunc (GL_LEQUAL);
953 glDepthMask (GL_TRUE);
956 glEnable (GL_DEPTH_TEST);
960 glDisable (GL_DEPTH_TEST);
963 #if !defined(GL_ES_VERSION_2_0)
966 glClearDepthf (1.0f);
971 glDisable (GL_DEPTH_TEST);
974 myView->Render (myPrintContext, aWS, theCView, theCUnderLayer, theCOverLayer, Standard_True);
975 if (!myView->ImmediateStructures().IsEmpty())
977 glDisable (GL_DEPTH_TEST);
979 for (OpenGl_SequenceOfStructure::Iterator anIter (myView->ImmediateStructures());
980 anIter.More(); anIter.Next())
982 const OpenGl_Structure* aStructure = anIter.Value();
983 if (!aStructure->IsVisible())
988 aStructure->Render (aWS);
991 if (isDoubleBuffer && myTransientDrawToFront)
994 MakeBackBufCurrent();