0025027: Visualization - 2D layer viewport is updated incorrectly on resize
[occt.git] / src / OpenGl / OpenGl_Workspace.cxx
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b311480e 1// Created on: 2011-09-20
2// Created by: Sergey ZERCHANINOV
973c2be1 3// Copyright (c) 2011-2014 OPEN CASCADE SAS
b311480e 4//
973c2be1 5// This file is part of Open CASCADE Technology software library.
b311480e 6//
d5f74e42 7// This library is free software; you can redistribute it and/or modify it under
8// the terms of the GNU Lesser General Public License version 2.1 as published
973c2be1 9// by the Free Software Foundation, with special exception defined in the file
10// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
11// distribution for complete text of the license and disclaimer of any warranty.
b311480e 12//
973c2be1 13// Alternatively, this file may be used under the terms of Open CASCADE
14// commercial license or contractual agreement.
b311480e 15
e276548b 16#ifdef HAVE_CONFIG_H
17 #include <config.h>
18#endif
19
a577aaab 20#include <OpenGl_GlCore15.hxx>
5f8b738e 21
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22#include <InterfaceGraphic.hxx>
23
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24#include <OpenGl_AspectLine.hxx>
25#include <OpenGl_AspectFace.hxx>
26#include <OpenGl_AspectMarker.hxx>
27#include <OpenGl_AspectText.hxx>
bf75be98 28#include <OpenGl_Context.hxx>
679ecdee 29#include <OpenGl_Element.hxx>
a174a3c5 30#include <OpenGl_FrameBuffer.hxx>
679ecdee 31#include <OpenGl_Structure.hxx>
bf75be98 32#include <OpenGl_Texture.hxx>
e276548b 33#include <OpenGl_View.hxx>
a174a3c5 34#include <OpenGl_Workspace.hxx>
2166f0fa 35
bf75be98 36#include <Graphic3d_TextureParams.hxx>
2166f0fa 37
58655684 38#if defined(_WIN32) && defined(HAVE_VIDEOCAPTURE)
a174a3c5 39 #include <OpenGl_AVIWriter.hxx>
40#endif
41
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42IMPLEMENT_STANDARD_HANDLE(OpenGl_Workspace,OpenGl_Window)
43IMPLEMENT_STANDARD_RTTIEXT(OpenGl_Workspace,OpenGl_Window)
44
45namespace
46{
0adbd30f 47 static const TEL_COLOUR THE_WHITE_COLOR = { { 1.0f, 1.0f, 1.0f, 1.0f } };
48 static const OpenGl_Vec4 THE_BLACK_COLOR (0.0f, 0.0f, 0.0f, 1.0f);
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49
50 static const OpenGl_AspectLine myDefaultAspectLine;
51 static const OpenGl_AspectFace myDefaultAspectFace;
52 static const OpenGl_AspectMarker myDefaultAspectMarker;
53 static const OpenGl_AspectText myDefaultAspectText;
54
55 static const OpenGl_TextParam myDefaultTextParam =
56 {
57 16, Graphic3d_HTA_LEFT, Graphic3d_VTA_BOTTOM
58 };
59
60 static const OpenGl_Matrix myDefaultMatrix =
61 {
62 {{ 1.0F, 0.0F, 0.0F, 0.0F },
63 { 0.0F, 1.0F, 0.0F, 0.0F },
64 { 0.0F, 0.0F, 1.0F, 0.0F },
65 { 0.0F, 0.0F, 0.0F, 1.0F }}
66 };
bf75be98 67
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68};
69
70// =======================================================================
0adbd30f 71// function : Init
72// purpose :
73// =======================================================================
74void OpenGl_Material::Init (const OPENGL_SURF_PROP& theProp)
75{
76 // ambient component
77 if (theProp.color_mask & OPENGL_AMBIENT_MASK)
78 {
79 const float* aSrcAmb = theProp.isphysic ? theProp.ambcol.rgb : theProp.matcol.rgb;
80 Ambient = OpenGl_Vec4 (aSrcAmb[0] * theProp.amb,
81 aSrcAmb[1] * theProp.amb,
82 aSrcAmb[2] * theProp.amb,
83 1.0f);
84 }
85 else
86 {
87 Ambient = THE_BLACK_COLOR;
88 }
89
90 // diffusion component
91 if (theProp.color_mask & OPENGL_DIFFUSE_MASK)
92 {
93 const float* aSrcDif = theProp.isphysic ? theProp.difcol.rgb : theProp.matcol.rgb;
94 Diffuse = OpenGl_Vec4 (aSrcDif[0] * theProp.diff,
95 aSrcDif[1] * theProp.diff,
96 aSrcDif[2] * theProp.diff,
97 1.0f);
98 }
99 else
100 {
101 Diffuse = THE_BLACK_COLOR;
102 }
103
104 // specular component
105 if (theProp.color_mask & OPENGL_SPECULAR_MASK)
106 {
107 const float* aSrcSpe = theProp.isphysic ? theProp.speccol.rgb : THE_WHITE_COLOR.rgb;
108 Specular = OpenGl_Vec4 (aSrcSpe[0] * theProp.spec,
109 aSrcSpe[1] * theProp.spec,
110 aSrcSpe[2] * theProp.spec,
111 1.0f);
112 }
113 else
114 {
115 Specular = THE_BLACK_COLOR;
116 }
117
118 // emission component
119 if (theProp.color_mask & OPENGL_EMISSIVE_MASK)
120 {
121 const float* aSrcEms = theProp.isphysic ? theProp.emscol.rgb : theProp.matcol.rgb;
122 Emission = OpenGl_Vec4 (aSrcEms[0] * theProp.emsv,
123 aSrcEms[1] * theProp.emsv,
124 aSrcEms[2] * theProp.emsv,
125 1.0f);
126 }
127 else
128 {
129 Emission = THE_BLACK_COLOR;
130 }
131
132 ChangeShine() = theProp.shine;
133 ChangeTransparency() = theProp.trans;
134}
135
136// =======================================================================
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137// function : OpenGl_Workspace
138// purpose :
139// =======================================================================
73192b37 140OpenGl_Workspace::OpenGl_Workspace (const Handle(Aspect_DisplayConnection)& theDisplayConnection,
2166f0fa 141 const CALL_DEF_WINDOW& theCWindow,
5e27df78 142 Aspect_RenderingContext theGContext,
58655684 143 const Handle(OpenGl_Caps)& theCaps,
5e27df78 144 const Handle(OpenGl_Context)& theShareCtx)
73192b37 145: OpenGl_Window (theDisplayConnection, theCWindow, theGContext, theCaps, theShareCtx),
a174a3c5 146 NamedStatus (0),
0adbd30f 147 HighlightColor (&THE_WHITE_COLOR),
a174a3c5 148 //
fc73a202 149 myComputeInitStatus (OpenGl_RT_NONE),
150 myIsRaytraceDataValid (Standard_False),
fc73a202 151 myViewModificationStatus (0),
152 myLayersModificationStatus (0),
153 //
73192b37 154 myAntiAliasingMode (3),
a174a3c5 155 myTransientDrawToFront (Standard_True),
679ecdee 156 myBackBufferRestored (Standard_False),
157 myIsImmediateDrawn (Standard_False),
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158 myUseTransparency (Standard_False),
159 myUseZBuffer (Standard_False),
160 myUseDepthTest (Standard_True),
161 myUseGLLight (Standard_True),
2166f0fa 162 //
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163 AspectLine_set (&myDefaultAspectLine),
164 AspectLine_applied (NULL),
165 AspectFace_set (&myDefaultAspectFace),
166 AspectFace_applied (NULL),
167 AspectMarker_set (&myDefaultAspectMarker),
168 AspectMarker_applied (NULL),
169 AspectText_set (&myDefaultAspectText),
170 AspectText_applied (NULL),
171 TextParam_set (&myDefaultTextParam),
172 TextParam_applied (NULL),
173 ViewMatrix_applied (&myDefaultMatrix),
174 StructureMatrix_applied (&myDefaultMatrix),
3b1817a9 175 myCullingMode (TelCullUndefined),
0f8c0fb8 176 myModelViewMatrix (myDefaultMatrix),
550f3b8b 177 PolygonOffset_applied (THE_DEFAULT_POFFSET)
2166f0fa 178{
73192b37 179 myGlContext->core11fwd->glPixelStorei (GL_UNPACK_ALIGNMENT, 1);
180
181 if (!myGlContext->GetResource ("OpenGl_LineAttributes", myLineAttribs))
182 {
183 // share and register for release once the resource is no longer used
184 myLineAttribs = new OpenGl_LineAttributes();
185 myGlContext->ShareResource ("OpenGl_LineAttributes", myLineAttribs);
186 myLineAttribs->Init (myGlContext);
187 }
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188
189 // General initialization of the context
190
191 // Eviter d'avoir les faces mal orientees en noir.
192 // Pourrait etre utiliser pour detecter les problemes d'orientation
bf75be98 193 glLightModeli ((GLenum )GL_LIGHT_MODEL_TWO_SIDE, GL_TRUE);
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194
195 // Optimisation pour le Fog et l'antialiasing
196 glHint (GL_FOG_HINT, GL_FASTEST);
197 glHint (GL_POINT_SMOOTH_HINT, GL_FASTEST);
198 glHint (GL_LINE_SMOOTH_HINT, GL_FASTEST);
199 glHint (GL_POLYGON_SMOOTH_HINT, GL_FASTEST);
200
73192b37 201 // AA mode
202 const char* anAaEnv = ::getenv ("CALL_OPENGL_ANTIALIASING_MODE");
203 if (anAaEnv != NULL)
204 {
205 int v;
206 if (sscanf (anAaEnv, "%d", &v) > 0) myAntiAliasingMode = v;
207 }
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208}
209
210// =======================================================================
1981cb22 211// function : SetImmediateModeDrawToFront
212// purpose :
213// =======================================================================
214Standard_Boolean OpenGl_Workspace::SetImmediateModeDrawToFront (const Standard_Boolean theDrawToFrontBuffer)
215{
216 const Standard_Boolean aPrevMode = myTransientDrawToFront;
217 myTransientDrawToFront = theDrawToFrontBuffer;
218 return aPrevMode;
219}
220
221// =======================================================================
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222// function : ~OpenGl_Workspace
223// purpose :
224// =======================================================================
225OpenGl_Workspace::~OpenGl_Workspace()
226{
73192b37 227 if (!myLineAttribs.IsNull())
228 {
229 myLineAttribs.Nullify();
230 myGlContext->ReleaseResource ("OpenGl_LineAttributes", Standard_True);
231 }
232
fc73a202 233 ReleaseRaytraceResources();
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234}
235
236// =======================================================================
237// function : Activate
238// purpose :
239// =======================================================================
240Standard_Boolean OpenGl_Workspace::Activate()
241{
242 if (!OpenGl_Window::Activate())
243 return Standard_False;
244
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245 ViewMatrix_applied = &myDefaultMatrix;
246 StructureMatrix_applied = &myDefaultMatrix;
26395493 247
248 ResetAppliedAspect();
249
250 return Standard_True;
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251}
252
253// =======================================================================
254// function : UseTransparency
255// purpose : call_togl_transparency
256// =======================================================================
257void OpenGl_Workspace::UseTransparency (const Standard_Boolean theFlag)
258{
de75ed09 259 myUseTransparency = theFlag;
2166f0fa 260}
26395493 261
262//=======================================================================
263//function : ResetAppliedAspect
264//purpose : Sets default values of GL parameters in accordance with default aspects
265//=======================================================================
266void OpenGl_Workspace::ResetAppliedAspect()
267{
bf75be98 268 NamedStatus = !myTextureBound.IsNull() ? OPENGL_NS_TEXTURE : 0;
0adbd30f 269 HighlightColor = &THE_WHITE_COLOR;
26395493 270 AspectLine_set = &myDefaultAspectLine;
271 AspectLine_applied = NULL;
272 AspectFace_set = &myDefaultAspectFace;
273 AspectFace_applied = NULL;
274 AspectMarker_set = &myDefaultAspectMarker;
275 AspectMarker_applied = NULL;
276 AspectText_set = &myDefaultAspectText;
277 AspectText_applied = NULL;
278 TextParam_set = &myDefaultTextParam;
279 TextParam_applied = NULL;
550f3b8b 280 PolygonOffset_applied = THE_DEFAULT_POFFSET;
3b1817a9 281 myCullingMode = TelCullUndefined;
26395493 282
283 AspectLine(Standard_True);
284 AspectFace(Standard_True);
285 AspectMarker(Standard_True);
286 AspectText(Standard_True);
287}
bf75be98 288
289// =======================================================================
290// function : DisableTexture
291// purpose :
292// =======================================================================
293Handle(OpenGl_Texture) OpenGl_Workspace::DisableTexture()
294{
295 if (myTextureBound.IsNull())
296 {
297 return myTextureBound;
298 }
299
300 // reset texture matrix because some code may expect it is identity
301 GLint aMatrixMode = GL_TEXTURE;
302 glGetIntegerv (GL_MATRIX_MODE, &aMatrixMode);
303 glMatrixMode (GL_TEXTURE);
304 glLoadIdentity();
305 glMatrixMode (aMatrixMode);
306
307 myTextureBound->Unbind (myGlContext);
308 switch (myTextureBound->GetTarget())
309 {
310 case GL_TEXTURE_1D:
311 {
312 if (myTextureBound->GetParams()->GenMode() != GL_NONE)
313 {
314 glDisable (GL_TEXTURE_GEN_S);
315 }
316 glDisable (GL_TEXTURE_1D);
317 break;
318 }
319 case GL_TEXTURE_2D:
320 {
321 if (myTextureBound->GetParams()->GenMode() != GL_NONE)
322 {
323 glDisable (GL_TEXTURE_GEN_S);
324 glDisable (GL_TEXTURE_GEN_T);
a577aaab 325 if (myTextureBound->GetParams()->GenMode() == Graphic3d_TOTM_SPRITE)
326 {
327 glDisable (GL_POINT_SPRITE);
328 }
bf75be98 329 }
330 glDisable (GL_TEXTURE_2D);
331 break;
332 }
333 default: break;
334 }
335
336 Handle(OpenGl_Texture) aPrevTexture = myTextureBound;
337 myTextureBound.Nullify();
338 return aPrevTexture;
339}
340
341// =======================================================================
342// function : setTextureParams
343// purpose :
344// =======================================================================
345void OpenGl_Workspace::setTextureParams (Handle(OpenGl_Texture)& theTexture,
346 const Handle(Graphic3d_TextureParams)& theParams)
347{
348 const Handle(Graphic3d_TextureParams)& aParams = theParams.IsNull() ? theTexture->GetParams() : theParams;
349 if (aParams.IsNull())
350 {
351 return;
352 }
353
354 GLint aMatrixMode = GL_TEXTURE;
355 glGetIntegerv (GL_MATRIX_MODE, &aMatrixMode);
356
357 // setup texture matrix
358 glMatrixMode (GL_TEXTURE);
359 glLoadIdentity();
360 const Graphic3d_Vec2& aScale = aParams->Scale();
361 const Graphic3d_Vec2& aTrans = aParams->Translation();
362 glScalef ( aScale.x(), aScale.y(), 1.0f);
363 glTranslatef (-aTrans.x(), -aTrans.y(), 0.0f);
364 glRotatef (-aParams->Rotation(), 0.0f, 0.0f, 1.0f);
365
366 // setup generation of texture coordinates
367 switch (aParams->GenMode())
368 {
369 case Graphic3d_TOTM_OBJECT:
370 {
371 glTexGeni (GL_S, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
372 glTexGenfv (GL_S, GL_OBJECT_PLANE, aParams->GenPlaneS().GetData());
373 if (theTexture->GetTarget() != GL_TEXTURE_1D)
374 {
375 glTexGeni (GL_T, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
376 glTexGenfv (GL_T, GL_OBJECT_PLANE, aParams->GenPlaneT().GetData());
377 }
378 break;
379 }
380 case Graphic3d_TOTM_SPHERE:
381 {
382 glTexGeni (GL_S, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
383 if (theTexture->GetTarget() != GL_TEXTURE_1D)
384 {
385 glTexGeni (GL_T, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
386 }
387 break;
388 }
389 case Graphic3d_TOTM_EYE:
390 {
391 glMatrixMode (GL_MODELVIEW);
392 glPushMatrix();
393 glLoadIdentity();
394
395 glTexGeni (GL_S, GL_TEXTURE_GEN_MODE, GL_EYE_LINEAR);
396 glTexGenfv (GL_S, GL_EYE_PLANE, aParams->GenPlaneS().GetData());
397
398 if (theTexture->GetTarget() != GL_TEXTURE_1D)
399 {
400 glTexGeni (GL_T, GL_TEXTURE_GEN_MODE, GL_EYE_LINEAR);
401 glTexGenfv (GL_T, GL_EYE_PLANE, aParams->GenPlaneT().GetData());
402 }
403 glPopMatrix();
404 break;
405 }
a577aaab 406 case Graphic3d_TOTM_SPRITE:
407 {
408 if (GetGlContext()->core20 != NULL)
409 {
410 glEnable (GL_POINT_SPRITE);
411 glTexEnvi (GL_POINT_SPRITE, GL_COORD_REPLACE, GL_TRUE);
412 glTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
413 GetGlContext()->core15->glPointParameteri (GL_POINT_SPRITE_COORD_ORIGIN, GL_LOWER_LEFT);
414 }
415 break;
416 }
bf75be98 417 case Graphic3d_TOTM_MANUAL:
418 default: break;
419 }
420
421 // setup lighting
a577aaab 422 if (aParams->GenMode() != Graphic3d_TOTM_SPRITE)
423 {
424 glTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, aParams->IsModulate() ? GL_MODULATE : GL_DECAL);
425 }
bf75be98 426
427 // setup texture filtering and wrapping
428 //if (theTexture->GetParams() != theParams)
429 const GLenum aFilter = (aParams->Filter() == Graphic3d_TOTF_NEAREST) ? GL_NEAREST : GL_LINEAR;
430 const GLenum aWrapMode = aParams->IsRepeat() ? GL_REPEAT : GL_CLAMP;
431 switch (theTexture->GetTarget())
432 {
433 case GL_TEXTURE_1D:
434 {
435 glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, aFilter);
436 glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, aFilter);
437 glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_WRAP_S, aWrapMode);
438 break;
439 }
440 case GL_TEXTURE_2D:
441 {
442 GLenum aFilterMin = aFilter;
443 if (theTexture->HasMipmaps())
444 {
445 aFilterMin = GL_NEAREST_MIPMAP_NEAREST;
446 if (aParams->Filter() == Graphic3d_TOTF_BILINEAR)
447 {
448 aFilterMin = GL_LINEAR_MIPMAP_NEAREST;
449 }
450 else if (aParams->Filter() == Graphic3d_TOTF_TRILINEAR)
451 {
452 aFilterMin = GL_LINEAR_MIPMAP_LINEAR;
453 }
454
455 if (myGlContext->extAnis)
456 {
457 // setup degree of anisotropy filter
458 const GLint aMaxDegree = myGlContext->MaxDegreeOfAnisotropy();
459 switch (aParams->AnisoFilter())
460 {
461 case Graphic3d_LOTA_QUALITY:
462 {
463 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, aMaxDegree);
464 break;
465 }
466 case Graphic3d_LOTA_MIDDLE:
467 {
468
469 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, (aMaxDegree <= 4) ? 2 : (aMaxDegree / 2));
470 break;
471 }
472 case Graphic3d_LOTA_FAST:
473 {
474 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, 2);
475 break;
476 }
477 case Graphic3d_LOTA_OFF:
478 default:
479 {
480 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, 1);
481 break;
482 }
483 }
484 }
485 }
486 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, aFilterMin);
487 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, aFilter);
488 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, aWrapMode);
489 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, aWrapMode);
490 break;
491 }
492 default: break;
493 }
494
495 switch (theTexture->GetTarget())
496 {
497 case GL_TEXTURE_1D:
498 {
499 if (aParams->GenMode() != Graphic3d_TOTM_MANUAL)
500 {
501 glEnable (GL_TEXTURE_GEN_S);
502 }
503 glEnable (GL_TEXTURE_1D);
504 break;
505 }
506 case GL_TEXTURE_2D:
507 {
508 if (aParams->GenMode() != Graphic3d_TOTM_MANUAL)
509 {
510 glEnable (GL_TEXTURE_GEN_S);
511 glEnable (GL_TEXTURE_GEN_T);
512 }
513 glEnable (GL_TEXTURE_2D);
514 break;
515 }
516 default: break;
517 }
518
519 glMatrixMode (aMatrixMode); // turn back active matrix
520 theTexture->SetParams (aParams);
521}
522
523// =======================================================================
524// function : EnableTexture
525// purpose :
526// =======================================================================
527Handle(OpenGl_Texture) OpenGl_Workspace::EnableTexture (const Handle(OpenGl_Texture)& theTexture,
528 const Handle(Graphic3d_TextureParams)& theParams)
529{
530 if (theTexture.IsNull() || !theTexture->IsValid())
531 {
532 return DisableTexture();
533 }
534
bca1d6e2 535 if (myTextureBound == theTexture
536 && (theParams.IsNull() || theParams == theTexture->GetParams()))
bf75be98 537 {
bca1d6e2 538 // already bound
539 return myTextureBound;
bf75be98 540 }
541
542 Handle(OpenGl_Texture) aPrevTexture = DisableTexture();
543 myTextureBound = theTexture;
544 myTextureBound->Bind (myGlContext);
545 setTextureParams (myTextureBound, theParams);
546
547 return aPrevTexture;
548}
a174a3c5 549
550// =======================================================================
551// function : Redraw
552// purpose :
553// =======================================================================
554void OpenGl_Workspace::Redraw (const Graphic3d_CView& theCView,
555 const Aspect_CLayer2d& theCUnderLayer,
556 const Aspect_CLayer2d& theCOverLayer)
557{
558 if (!Activate())
559 {
560 return;
561 }
562
563 // release pending GL resources
564 Handle(OpenGl_Context) aGlCtx = GetGlContext();
565 aGlCtx->ReleaseDelayed();
566
b5ac8292 567 // fetch OpenGl context state
568 aGlCtx->FetchState();
a174a3c5 569
b5ac8292 570 Tint toSwap = (aGlCtx->IsRender()); // swap buffers
a174a3c5 571 GLint aViewPortBack[4];
572 OpenGl_FrameBuffer* aFrameBuffer = (OpenGl_FrameBuffer* )theCView.ptrFBO;
573 if (aFrameBuffer != NULL)
574 {
575 glGetIntegerv (GL_VIEWPORT, aViewPortBack);
fd4a6963 576 aFrameBuffer->SetupViewport (aGlCtx);
577 aFrameBuffer->BindBuffer (aGlCtx);
a174a3c5 578 toSwap = 0; // no need to swap buffers
579 }
580
bc8c79bb 581 if (theCView.RenderParams.Method != Graphic3d_RM_RAYTRACING || myComputeInitStatus == OpenGl_RT_FAIL)
e276548b 582 {
679ecdee 583 const Standard_Boolean isImmediate = !myView->ImmediateStructures().IsEmpty();
584 redraw1 (theCView, theCUnderLayer, theCOverLayer, isImmediate ? 0 : toSwap);
585 if (isImmediate)
e276548b 586 {
679ecdee 587 RedrawImmediate (theCView, theCUnderLayer, theCOverLayer, Standard_True);
e276548b 588 }
589
590 theCView.WasRedrawnGL = Standard_True;
e276548b 591 }
592 else
a174a3c5 593 {
e276548b 594 int aSizeX = aFrameBuffer != NULL ? aFrameBuffer->GetVPSizeX() : myWidth;
595 int aSizeY = aFrameBuffer != NULL ? aFrameBuffer->GetVPSizeY() : myHeight;
596
fc73a202 597 Raytrace (theCView, aSizeX, aSizeY, toSwap, aFrameBuffer);
e276548b 598
599 theCView.WasRedrawnGL = Standard_False;
a174a3c5 600 }
601
602 if (aFrameBuffer != NULL)
603 {
604 aFrameBuffer->UnbindBuffer (aGlCtx);
605 // move back original viewport
606 glViewport (aViewPortBack[0], aViewPortBack[1], aViewPortBack[2], aViewPortBack[3]);
607 }
608
679ecdee 609#if defined(_WIN32) && defined(HAVE_VIDEOCAPTURE)
a174a3c5 610 if (OpenGl_AVIWriter_AllowWriting (theCView.DefWindow.XWindow))
611 {
612 GLint params[4];
613 glGetIntegerv (GL_VIEWPORT, params);
614 int nWidth = params[2] & ~0x7;
615 int nHeight = params[3] & ~0x7;
616
617 const int nBitsPerPixel = 24;
618 GLubyte* aDumpData = new GLubyte[nWidth * nHeight * nBitsPerPixel / 8];
619
620 glPixelStorei (GL_PACK_ALIGNMENT, 1);
621 glReadPixels (0, 0, nWidth, nHeight, GL_BGR_EXT, GL_UNSIGNED_BYTE, aDumpData);
622 OpenGl_AVIWriter_AVIWriter (aDumpData, nWidth, nHeight, nBitsPerPixel);
623 delete[] aDumpData;
624 }
625#endif
626
627 // reset render mode state
b5ac8292 628 aGlCtx->FetchState();
a174a3c5 629}
679ecdee 630
631// =======================================================================
632// function : redraw1
633// purpose :
634// =======================================================================
635void OpenGl_Workspace::redraw1 (const Graphic3d_CView& theCView,
636 const Aspect_CLayer2d& theCUnderLayer,
637 const Aspect_CLayer2d& theCOverLayer,
638 const int theToSwap)
639{
73192b37 640 if (myView.IsNull())
679ecdee 641 {
642 return;
643 }
644
645 // request reset of material
646 NamedStatus |= OPENGL_NS_RESMAT;
647
679ecdee 648 GLbitfield toClear = GL_COLOR_BUFFER_BIT;
649 if (myUseZBuffer)
650 {
651 glDepthFunc (GL_LEQUAL);
652 glDepthMask (GL_TRUE);
653 if (myUseDepthTest)
654 {
655 glEnable (GL_DEPTH_TEST);
656 }
657 else
658 {
659 glDisable (GL_DEPTH_TEST);
660 }
661
662 glClearDepth (1.0);
663 toClear |= GL_DEPTH_BUFFER_BIT;
664 }
665 else
666 {
667 glDisable (GL_DEPTH_TEST);
668 }
669
670 if (NamedStatus & OPENGL_NS_WHITEBACK)
671 {
672 // set background to white
673 glClearColor (1.0f, 1.0f, 1.0f, 1.0f);
674 toClear |= GL_DEPTH_BUFFER_BIT;
675 }
676 else
677 {
678 glClearColor (myBgColor.rgb[0], myBgColor.rgb[1], myBgColor.rgb[2], 0.0f);
679 }
680 glClear (toClear);
681
682 Handle(OpenGl_Workspace) aWS (this);
683 myView->Render (myPrintContext, aWS, theCView, theCUnderLayer, theCOverLayer);
684
685 // swap the buffers
686 if (theToSwap)
687 {
688 GetGlContext()->SwapBuffers();
689 myBackBufferRestored = Standard_False;
690 myIsImmediateDrawn = Standard_False;
691 }
692 else
693 {
694 glFlush();
695 myBackBufferRestored = Standard_True;
696 myIsImmediateDrawn = Standard_False;
697 }
698}
699
700// =======================================================================
701// function : copyBackToFront
702// purpose :
703// =======================================================================
704void OpenGl_Workspace::copyBackToFront()
705{
706 glMatrixMode (GL_PROJECTION);
707 glPushMatrix();
708 glLoadIdentity();
709 gluOrtho2D (0.0, (GLdouble )myWidth, 0.0, (GLdouble )myHeight);
710 glMatrixMode (GL_MODELVIEW);
711 glPushMatrix();
712 glLoadIdentity();
713
714 DisableFeatures();
715
716 glDrawBuffer (GL_FRONT);
717 glReadBuffer (GL_BACK);
718
719 glRasterPos2i (0, 0);
720 glCopyPixels (0, 0, myWidth + 1, myHeight + 1, GL_COLOR);
721
722 EnableFeatures();
723
724 glMatrixMode (GL_PROJECTION);
725 glPopMatrix();
726 glMatrixMode (GL_MODELVIEW);
727 glPopMatrix();
728
729 glDrawBuffer (GL_BACK);
730
731 myIsImmediateDrawn = Standard_False;
732}
733
734// =======================================================================
735// function : DisplayCallback
736// purpose :
737// =======================================================================
738void OpenGl_Workspace::DisplayCallback (const Graphic3d_CView& theCView,
739 Standard_Integer theReason)
740{
741 if (theCView.GDisplayCB == NULL)
742 {
743 return;
744 }
745
746 Aspect_GraphicCallbackStruct aCallData;
747 aCallData.reason = theReason;
748 aCallData.glContext = GetGlContext();
749 aCallData.wsID = theCView.WsId;
750 aCallData.viewID = theCView.ViewId;
751 theCView.GDisplayCB (theCView.DefWindow.XWindow, theCView.GClientData, &aCallData);
752}
753
754// =======================================================================
755// function : RedrawImmediate
756// purpose :
757// =======================================================================
758void OpenGl_Workspace::RedrawImmediate (const Graphic3d_CView& theCView,
759 const Aspect_CLayer2d& theCUnderLayer,
760 const Aspect_CLayer2d& theCOverLayer,
761 const Standard_Boolean theToForce)
762{
763 if (!Activate())
764 {
765 return;
766 }
767
768 GLboolean isDoubleBuffer = GL_FALSE;
769 glGetBooleanv (GL_DOUBLEBUFFER, &isDoubleBuffer);
770 if (myView->ImmediateStructures().IsEmpty())
771 {
772 if (theToForce
773 || !myIsImmediateDrawn)
774 {
775 myIsImmediateDrawn = Standard_False;
776 return;
777 }
778
779 if (myBackBufferRestored
780 && isDoubleBuffer)
781 {
782 copyBackToFront();
65812bd0 783 glFlush();
679ecdee 784 }
785 else
786 {
787 Redraw (theCView, theCUnderLayer, theCOverLayer);
788 }
789 return;
790 }
791
792 if (isDoubleBuffer && myTransientDrawToFront)
793 {
794 if (!myBackBufferRestored)
795 {
796 Redraw (theCView, theCUnderLayer, theCOverLayer);
797 return;
798 }
799 copyBackToFront();
800 MakeFrontBufCurrent();
801 }
802 else
803 {
804 myBackBufferRestored = Standard_False;
805 }
806 myIsImmediateDrawn = Standard_True;
807
808 NamedStatus |= OPENGL_NS_IMMEDIATE;
809 ///glDisable (GL_LIGHTING);
810 glDisable (GL_DEPTH_TEST);
811
812 Handle(OpenGl_Workspace) aWS (this);
813 for (OpenGl_SequenceOfStructure::Iterator anIter (myView->ImmediateStructures());
814 anIter.More(); anIter.Next())
815 {
816 const OpenGl_Structure* aStructure = anIter.Value();
817 aStructure->Render (aWS);
818 }
819
820 NamedStatus &= ~OPENGL_NS_IMMEDIATE;
821
822 if (isDoubleBuffer && myTransientDrawToFront)
823 {
824 glFlush();
825 MakeBackBufCurrent();
826 }
827}