0024381: Visualization, TKOpenGl - revise matrices stack and usage of temporary matrices
[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
a577aaab 16#include <OpenGl_GlCore15.hxx>
5f8b738e 17
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18#include <InterfaceGraphic.hxx>
19
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20#include <OpenGl_AspectLine.hxx>
21#include <OpenGl_AspectFace.hxx>
22#include <OpenGl_AspectMarker.hxx>
23#include <OpenGl_AspectText.hxx>
bf75be98 24#include <OpenGl_Context.hxx>
679ecdee 25#include <OpenGl_Element.hxx>
a174a3c5 26#include <OpenGl_FrameBuffer.hxx>
679ecdee 27#include <OpenGl_Structure.hxx>
25ef750e 28#include <OpenGl_Sampler.hxx>
bf75be98 29#include <OpenGl_Texture.hxx>
c827ea3a 30#include <OpenGl_Utils.hxx>
e276548b 31#include <OpenGl_View.hxx>
a174a3c5 32#include <OpenGl_Workspace.hxx>
2166f0fa 33
bf75be98 34#include <Graphic3d_TextureParams.hxx>
2166f0fa 35
58655684 36#if defined(_WIN32) && defined(HAVE_VIDEOCAPTURE)
a174a3c5 37 #include <OpenGl_AVIWriter.hxx>
38#endif
39
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40IMPLEMENT_STANDARD_HANDLE(OpenGl_Workspace,OpenGl_Window)
41IMPLEMENT_STANDARD_RTTIEXT(OpenGl_Workspace,OpenGl_Window)
42
43namespace
44{
0adbd30f 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);
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47
48 static const OpenGl_AspectLine myDefaultAspectLine;
49 static const OpenGl_AspectFace myDefaultAspectFace;
50 static const OpenGl_AspectMarker myDefaultAspectMarker;
51 static const OpenGl_AspectText myDefaultAspectText;
52
53 static const OpenGl_TextParam myDefaultTextParam =
54 {
55 16, Graphic3d_HTA_LEFT, Graphic3d_VTA_BOTTOM
56 };
57
58 static const OpenGl_Matrix myDefaultMatrix =
59 {
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 }}
64 };
bf75be98 65
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66};
67
68// =======================================================================
0adbd30f 69// function : Init
70// purpose :
71// =======================================================================
72void OpenGl_Material::Init (const OPENGL_SURF_PROP& theProp)
73{
74 // ambient component
75 if (theProp.color_mask & OPENGL_AMBIENT_MASK)
76 {
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,
81 1.0f);
82 }
83 else
84 {
85 Ambient = THE_BLACK_COLOR;
86 }
87
88 // diffusion component
89 if (theProp.color_mask & OPENGL_DIFFUSE_MASK)
90 {
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,
95 1.0f);
96 }
97 else
98 {
99 Diffuse = THE_BLACK_COLOR;
100 }
101
102 // specular component
103 if (theProp.color_mask & OPENGL_SPECULAR_MASK)
104 {
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,
109 1.0f);
110 }
111 else
112 {
113 Specular = THE_BLACK_COLOR;
114 }
115
116 // emission component
117 if (theProp.color_mask & OPENGL_EMISSIVE_MASK)
118 {
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,
123 1.0f);
124 }
125 else
126 {
127 Emission = THE_BLACK_COLOR;
128 }
129
130 ChangeShine() = theProp.shine;
131 ChangeTransparency() = theProp.trans;
132}
133
134// =======================================================================
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135// function : OpenGl_Workspace
136// purpose :
137// =======================================================================
25b97fac 138OpenGl_Workspace::OpenGl_Workspace (const Handle(OpenGl_GraphicDriver)& theDriver,
2166f0fa 139 const CALL_DEF_WINDOW& theCWindow,
5e27df78 140 Aspect_RenderingContext theGContext,
58655684 141 const Handle(OpenGl_Caps)& theCaps,
5e27df78 142 const Handle(OpenGl_Context)& theShareCtx)
25b97fac 143: OpenGl_Window (theDriver, theCWindow, theGContext, theCaps, theShareCtx),
a174a3c5 144 NamedStatus (0),
0adbd30f 145 HighlightColor (&THE_WHITE_COLOR),
a174a3c5 146 //
fc73a202 147 myComputeInitStatus (OpenGl_RT_NONE),
148 myIsRaytraceDataValid (Standard_False),
25ef750e 149 myIsRaytraceWarnTextures (Standard_False),
fc73a202 150 myViewModificationStatus (0),
151 myLayersModificationStatus (0),
152 //
a89742cf 153 myRaytraceFilter (new OpenGl_RaytraceFilter()),
154 myToRedrawGL (Standard_True),
73192b37 155 myAntiAliasingMode (3),
a174a3c5 156 myTransientDrawToFront (Standard_True),
679ecdee 157 myBackBufferRestored (Standard_False),
158 myIsImmediateDrawn (Standard_False),
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159 myUseTransparency (Standard_False),
160 myUseZBuffer (Standard_False),
161 myUseDepthTest (Standard_True),
162 myUseGLLight (Standard_True),
b7cd4ba7 163 myIsCullingEnabled (Standard_False),
a89742cf 164 myFrameCounter (0),
2166f0fa 165 //
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166 AspectLine_set (&myDefaultAspectLine),
167 AspectLine_applied (NULL),
168 AspectFace_set (&myDefaultAspectFace),
169 AspectFace_applied (NULL),
170 AspectMarker_set (&myDefaultAspectMarker),
171 AspectMarker_applied (NULL),
172 AspectText_set (&myDefaultAspectText),
173 AspectText_applied (NULL),
174 TextParam_set (&myDefaultTextParam),
175 TextParam_applied (NULL),
176 ViewMatrix_applied (&myDefaultMatrix),
177 StructureMatrix_applied (&myDefaultMatrix),
3b1817a9 178 myCullingMode (TelCullUndefined),
0f8c0fb8 179 myModelViewMatrix (myDefaultMatrix),
550f3b8b 180 PolygonOffset_applied (THE_DEFAULT_POFFSET)
2166f0fa 181{
73192b37 182 myGlContext->core11fwd->glPixelStorei (GL_UNPACK_ALIGNMENT, 1);
183
184 if (!myGlContext->GetResource ("OpenGl_LineAttributes", myLineAttribs))
185 {
186 // share and register for release once the resource is no longer used
187 myLineAttribs = new OpenGl_LineAttributes();
188 myGlContext->ShareResource ("OpenGl_LineAttributes", myLineAttribs);
189 myLineAttribs->Init (myGlContext);
190 }
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191
192 // General initialization of the context
193
ca3c13d1 194#if !defined(GL_ES_VERSION_2_0)
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195 // Eviter d'avoir les faces mal orientees en noir.
196 // Pourrait etre utiliser pour detecter les problemes d'orientation
bf75be98 197 glLightModeli ((GLenum )GL_LIGHT_MODEL_TWO_SIDE, GL_TRUE);
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198
199 // Optimisation pour le Fog et l'antialiasing
200 glHint (GL_FOG_HINT, GL_FASTEST);
201 glHint (GL_POINT_SMOOTH_HINT, GL_FASTEST);
202 glHint (GL_LINE_SMOOTH_HINT, GL_FASTEST);
203 glHint (GL_POLYGON_SMOOTH_HINT, GL_FASTEST);
ca3c13d1 204#endif
2166f0fa 205
73192b37 206 // AA mode
207 const char* anAaEnv = ::getenv ("CALL_OPENGL_ANTIALIASING_MODE");
208 if (anAaEnv != NULL)
209 {
210 int v;
211 if (sscanf (anAaEnv, "%d", &v) > 0) myAntiAliasingMode = v;
212 }
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213}
214
215// =======================================================================
1981cb22 216// function : SetImmediateModeDrawToFront
217// purpose :
218// =======================================================================
219Standard_Boolean OpenGl_Workspace::SetImmediateModeDrawToFront (const Standard_Boolean theDrawToFrontBuffer)
220{
221 const Standard_Boolean aPrevMode = myTransientDrawToFront;
222 myTransientDrawToFront = theDrawToFrontBuffer;
223 return aPrevMode;
224}
225
226// =======================================================================
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227// function : ~OpenGl_Workspace
228// purpose :
229// =======================================================================
230OpenGl_Workspace::~OpenGl_Workspace()
231{
73192b37 232 if (!myLineAttribs.IsNull())
233 {
234 myLineAttribs.Nullify();
235 myGlContext->ReleaseResource ("OpenGl_LineAttributes", Standard_True);
236 }
237
fc73a202 238 ReleaseRaytraceResources();
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239}
240
241// =======================================================================
242// function : Activate
243// purpose :
244// =======================================================================
245Standard_Boolean OpenGl_Workspace::Activate()
246{
247 if (!OpenGl_Window::Activate())
248 return Standard_False;
249
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250 ViewMatrix_applied = &myDefaultMatrix;
251 StructureMatrix_applied = &myDefaultMatrix;
26395493 252
253 ResetAppliedAspect();
254
255 return Standard_True;
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256}
257
258// =======================================================================
259// function : UseTransparency
260// purpose : call_togl_transparency
261// =======================================================================
262void OpenGl_Workspace::UseTransparency (const Standard_Boolean theFlag)
263{
de75ed09 264 myUseTransparency = theFlag;
2166f0fa 265}
26395493 266
267//=======================================================================
268//function : ResetAppliedAspect
269//purpose : Sets default values of GL parameters in accordance with default aspects
270//=======================================================================
271void OpenGl_Workspace::ResetAppliedAspect()
272{
bf75be98 273 NamedStatus = !myTextureBound.IsNull() ? OPENGL_NS_TEXTURE : 0;
0adbd30f 274 HighlightColor = &THE_WHITE_COLOR;
26395493 275 AspectLine_set = &myDefaultAspectLine;
276 AspectLine_applied = NULL;
277 AspectFace_set = &myDefaultAspectFace;
278 AspectFace_applied = NULL;
279 AspectMarker_set = &myDefaultAspectMarker;
280 AspectMarker_applied = NULL;
281 AspectText_set = &myDefaultAspectText;
282 AspectText_applied = NULL;
283 TextParam_set = &myDefaultTextParam;
284 TextParam_applied = NULL;
550f3b8b 285 PolygonOffset_applied = THE_DEFAULT_POFFSET;
3b1817a9 286 myCullingMode = TelCullUndefined;
26395493 287
288 AspectLine(Standard_True);
289 AspectFace(Standard_True);
290 AspectMarker(Standard_True);
291 AspectText(Standard_True);
292}
bf75be98 293
294// =======================================================================
295// function : DisableTexture
296// purpose :
297// =======================================================================
298Handle(OpenGl_Texture) OpenGl_Workspace::DisableTexture()
299{
300 if (myTextureBound.IsNull())
301 {
302 return myTextureBound;
303 }
304
ca3c13d1 305#if !defined(GL_ES_VERSION_2_0)
bf75be98 306 // reset texture matrix because some code may expect it is identity
307 GLint aMatrixMode = GL_TEXTURE;
308 glGetIntegerv (GL_MATRIX_MODE, &aMatrixMode);
309 glMatrixMode (GL_TEXTURE);
310 glLoadIdentity();
311 glMatrixMode (aMatrixMode);
ca3c13d1 312#endif
bf75be98 313
314 myTextureBound->Unbind (myGlContext);
315 switch (myTextureBound->GetTarget())
316 {
ca3c13d1 317 #if !defined(GL_ES_VERSION_2_0)
bf75be98 318 case GL_TEXTURE_1D:
319 {
ca3c13d1 320
bf75be98 321 if (myTextureBound->GetParams()->GenMode() != GL_NONE)
322 {
323 glDisable (GL_TEXTURE_GEN_S);
324 }
325 glDisable (GL_TEXTURE_1D);
326 break;
327 }
ca3c13d1 328 #endif
bf75be98 329 case GL_TEXTURE_2D:
330 {
ca3c13d1 331 #if !defined(GL_ES_VERSION_2_0)
bf75be98 332 if (myTextureBound->GetParams()->GenMode() != GL_NONE)
333 {
334 glDisable (GL_TEXTURE_GEN_S);
335 glDisable (GL_TEXTURE_GEN_T);
a577aaab 336 if (myTextureBound->GetParams()->GenMode() == Graphic3d_TOTM_SPRITE)
337 {
338 glDisable (GL_POINT_SPRITE);
339 }
bf75be98 340 }
341 glDisable (GL_TEXTURE_2D);
05e2200b 342 #endif
bf75be98 343 break;
344 }
345 default: break;
346 }
347
348 Handle(OpenGl_Texture) aPrevTexture = myTextureBound;
349 myTextureBound.Nullify();
350 return aPrevTexture;
351}
352
353// =======================================================================
354// function : setTextureParams
355// purpose :
356// =======================================================================
357void OpenGl_Workspace::setTextureParams (Handle(OpenGl_Texture)& theTexture,
358 const Handle(Graphic3d_TextureParams)& theParams)
359{
360 const Handle(Graphic3d_TextureParams)& aParams = theParams.IsNull() ? theTexture->GetParams() : theParams;
361 if (aParams.IsNull())
362 {
363 return;
364 }
365
ca3c13d1 366#if !defined(GL_ES_VERSION_2_0)
bf75be98 367 GLint aMatrixMode = GL_TEXTURE;
368 glGetIntegerv (GL_MATRIX_MODE, &aMatrixMode);
369
370 // setup texture matrix
371 glMatrixMode (GL_TEXTURE);
c827ea3a 372 OpenGl_Mat4 aTextureMat;
bf75be98 373 const Graphic3d_Vec2& aScale = aParams->Scale();
374 const Graphic3d_Vec2& aTrans = aParams->Translation();
c827ea3a 375 OpenGl_Utils::Scale (aTextureMat, aScale.x(), aScale.y(), 1.0f);
376 OpenGl_Utils::Translate (aTextureMat, -aTrans.x(), -aTrans.y(), 0.0f);
377 OpenGl_Utils::Rotate (aTextureMat, -aParams->Rotation(), 0.0f, 0.0f, 1.0f);
378 glLoadMatrixf (aTextureMat);
bf75be98 379
380 // setup generation of texture coordinates
381 switch (aParams->GenMode())
382 {
383 case Graphic3d_TOTM_OBJECT:
384 {
385 glTexGeni (GL_S, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
386 glTexGenfv (GL_S, GL_OBJECT_PLANE, aParams->GenPlaneS().GetData());
387 if (theTexture->GetTarget() != GL_TEXTURE_1D)
388 {
389 glTexGeni (GL_T, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
390 glTexGenfv (GL_T, GL_OBJECT_PLANE, aParams->GenPlaneT().GetData());
391 }
392 break;
393 }
394 case Graphic3d_TOTM_SPHERE:
395 {
396 glTexGeni (GL_S, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
397 if (theTexture->GetTarget() != GL_TEXTURE_1D)
398 {
399 glTexGeni (GL_T, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
400 }
401 break;
402 }
403 case Graphic3d_TOTM_EYE:
404 {
c827ea3a 405 myGlContext->WorldViewState.Push();
406
407 myGlContext->WorldViewState.SetIdentity();
408 myGlContext->ApplyWorldViewMatrix();
bf75be98 409
410 glTexGeni (GL_S, GL_TEXTURE_GEN_MODE, GL_EYE_LINEAR);
411 glTexGenfv (GL_S, GL_EYE_PLANE, aParams->GenPlaneS().GetData());
412
413 if (theTexture->GetTarget() != GL_TEXTURE_1D)
414 {
415 glTexGeni (GL_T, GL_TEXTURE_GEN_MODE, GL_EYE_LINEAR);
416 glTexGenfv (GL_T, GL_EYE_PLANE, aParams->GenPlaneT().GetData());
417 }
c827ea3a 418
419 myGlContext->WorldViewState.Pop();
420
bf75be98 421 break;
422 }
a577aaab 423 case Graphic3d_TOTM_SPRITE:
424 {
425 if (GetGlContext()->core20 != NULL)
426 {
427 glEnable (GL_POINT_SPRITE);
428 glTexEnvi (GL_POINT_SPRITE, GL_COORD_REPLACE, GL_TRUE);
429 glTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
430 GetGlContext()->core15->glPointParameteri (GL_POINT_SPRITE_COORD_ORIGIN, GL_LOWER_LEFT);
431 }
432 break;
433 }
bf75be98 434 case Graphic3d_TOTM_MANUAL:
435 default: break;
436 }
437
438 // setup lighting
a577aaab 439 if (aParams->GenMode() != Graphic3d_TOTM_SPRITE)
440 {
441 glTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, aParams->IsModulate() ? GL_MODULATE : GL_DECAL);
442 }
ca3c13d1 443#endif
bf75be98 444
25ef750e 445 // get active sampler object to override default texture parameters
446 const Handle(OpenGl_Sampler)& aSampler = myGlContext->TextureSampler();
447
bf75be98 448 // setup texture filtering and wrapping
449 //if (theTexture->GetParams() != theParams)
450 const GLenum aFilter = (aParams->Filter() == Graphic3d_TOTF_NEAREST) ? GL_NEAREST : GL_LINEAR;
ca3c13d1 451 const GLenum aWrapMode = aParams->IsRepeat() ? GL_REPEAT : myGlContext->TextureWrapClamp();
bf75be98 452 switch (theTexture->GetTarget())
453 {
ca3c13d1 454 #if !defined(GL_ES_VERSION_2_0)
bf75be98 455 case GL_TEXTURE_1D:
456 {
25ef750e 457 if (aSampler.IsNull() || !aSampler->IsValid())
458 {
459 glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, aFilter);
460 glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, aFilter);
461 glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_WRAP_S, aWrapMode);
462 }
463 else
464 {
465 aSampler->SetParameter (*myGlContext, GL_TEXTURE_MAG_FILTER, aFilter);
466 aSampler->SetParameter (*myGlContext, GL_TEXTURE_MIN_FILTER, aFilter);
467 aSampler->SetParameter (*myGlContext, GL_TEXTURE_WRAP_S, aWrapMode);
468 }
469
bf75be98 470 break;
471 }
ca3c13d1 472 #endif
bf75be98 473 case GL_TEXTURE_2D:
474 {
475 GLenum aFilterMin = aFilter;
476 if (theTexture->HasMipmaps())
477 {
478 aFilterMin = GL_NEAREST_MIPMAP_NEAREST;
479 if (aParams->Filter() == Graphic3d_TOTF_BILINEAR)
480 {
481 aFilterMin = GL_LINEAR_MIPMAP_NEAREST;
482 }
483 else if (aParams->Filter() == Graphic3d_TOTF_TRILINEAR)
484 {
485 aFilterMin = GL_LINEAR_MIPMAP_LINEAR;
486 }
487
488 if (myGlContext->extAnis)
489 {
490 // setup degree of anisotropy filter
491 const GLint aMaxDegree = myGlContext->MaxDegreeOfAnisotropy();
25ef750e 492 GLint aDegree;
bf75be98 493 switch (aParams->AnisoFilter())
494 {
495 case Graphic3d_LOTA_QUALITY:
496 {
25ef750e 497 aDegree = aMaxDegree;
bf75be98 498 break;
499 }
500 case Graphic3d_LOTA_MIDDLE:
501 {
25ef750e 502 aDegree = (aMaxDegree <= 4) ? 2 : (aMaxDegree / 2);
bf75be98 503 break;
504 }
505 case Graphic3d_LOTA_FAST:
506 {
25ef750e 507 aDegree = 2;
bf75be98 508 break;
509 }
510 case Graphic3d_LOTA_OFF:
511 default:
512 {
25ef750e 513 aDegree = 1;
bf75be98 514 break;
515 }
516 }
25ef750e 517
518 if (aSampler.IsNull() || !aSampler->IsValid())
519 {
520 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, aDegree);
521 }
522 else
523 {
524 aSampler->SetParameter (*myGlContext, GL_TEXTURE_MAX_ANISOTROPY_EXT, aDegree);
525 }
bf75be98 526 }
527 }
25ef750e 528
529 if (aSampler.IsNull() || !aSampler->IsValid())
530 {
531 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, aFilterMin);
532 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, aFilter);
533 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, aWrapMode);
534 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, aWrapMode);
535 }
536 else
537 {
538 aSampler->SetParameter (*myGlContext, GL_TEXTURE_MIN_FILTER, aFilterMin);
539 aSampler->SetParameter (*myGlContext, GL_TEXTURE_MAG_FILTER, aFilter);
540 aSampler->SetParameter (*myGlContext, GL_TEXTURE_WRAP_S, aWrapMode);
541 aSampler->SetParameter (*myGlContext, GL_TEXTURE_WRAP_T, aWrapMode);
542 }
543
bf75be98 544 break;
545 }
546 default: break;
547 }
548
549 switch (theTexture->GetTarget())
550 {
ca3c13d1 551 #if !defined(GL_ES_VERSION_2_0)
bf75be98 552 case GL_TEXTURE_1D:
553 {
554 if (aParams->GenMode() != Graphic3d_TOTM_MANUAL)
555 {
556 glEnable (GL_TEXTURE_GEN_S);
557 }
558 glEnable (GL_TEXTURE_1D);
559 break;
560 }
ca3c13d1 561 #endif
bf75be98 562 case GL_TEXTURE_2D:
563 {
ca3c13d1 564 #if !defined(GL_ES_VERSION_2_0)
bf75be98 565 if (aParams->GenMode() != Graphic3d_TOTM_MANUAL)
566 {
567 glEnable (GL_TEXTURE_GEN_S);
568 glEnable (GL_TEXTURE_GEN_T);
569 }
570 glEnable (GL_TEXTURE_2D);
05e2200b 571 #endif
bf75be98 572 break;
573 }
574 default: break;
575 }
576
ca3c13d1 577#if !defined(GL_ES_VERSION_2_0)
bf75be98 578 glMatrixMode (aMatrixMode); // turn back active matrix
ca3c13d1 579#endif
bf75be98 580 theTexture->SetParams (aParams);
581}
582
583// =======================================================================
584// function : EnableTexture
585// purpose :
586// =======================================================================
587Handle(OpenGl_Texture) OpenGl_Workspace::EnableTexture (const Handle(OpenGl_Texture)& theTexture,
588 const Handle(Graphic3d_TextureParams)& theParams)
589{
590 if (theTexture.IsNull() || !theTexture->IsValid())
591 {
592 return DisableTexture();
593 }
594
bca1d6e2 595 if (myTextureBound == theTexture
596 && (theParams.IsNull() || theParams == theTexture->GetParams()))
bf75be98 597 {
bca1d6e2 598 // already bound
599 return myTextureBound;
bf75be98 600 }
601
602 Handle(OpenGl_Texture) aPrevTexture = DisableTexture();
603 myTextureBound = theTexture;
604 myTextureBound->Bind (myGlContext);
605 setTextureParams (myTextureBound, theParams);
606
25ef750e 607 // If custom sampler object is available it will be
608 // used for overriding default texture parameters
609 const Handle(OpenGl_Sampler)& aSampler = myGlContext->TextureSampler();
610
611 if (!aSampler.IsNull() && aSampler->IsValid())
612 {
613 aSampler->Bind (*myGlContext);
614 }
615
bf75be98 616 return aPrevTexture;
617}
a174a3c5 618
619// =======================================================================
620// function : Redraw
621// purpose :
622// =======================================================================
623void OpenGl_Workspace::Redraw (const Graphic3d_CView& theCView,
624 const Aspect_CLayer2d& theCUnderLayer,
625 const Aspect_CLayer2d& theCOverLayer)
626{
627 if (!Activate())
628 {
629 return;
630 }
631
a89742cf 632 ++myFrameCounter;
b7cd4ba7 633 myIsCullingEnabled = theCView.IsCullingEnabled;
634
a174a3c5 635 // release pending GL resources
636 Handle(OpenGl_Context) aGlCtx = GetGlContext();
637 aGlCtx->ReleaseDelayed();
638
b5ac8292 639 // fetch OpenGl context state
640 aGlCtx->FetchState();
a174a3c5 641
25b97fac 642 Tint toSwap = (aGlCtx->IsRender() && !aGlCtx->caps->buffersNoSwap) ? 1 : 0; // swap buffers
a174a3c5 643 GLint aViewPortBack[4];
644 OpenGl_FrameBuffer* aFrameBuffer = (OpenGl_FrameBuffer* )theCView.ptrFBO;
645 if (aFrameBuffer != NULL)
646 {
647 glGetIntegerv (GL_VIEWPORT, aViewPortBack);
fd4a6963 648 aFrameBuffer->SetupViewport (aGlCtx);
a174a3c5 649 toSwap = 0; // no need to swap buffers
650 }
651
a89742cf 652 myToRedrawGL = Standard_True;
653 if (theCView.RenderParams.Method == Graphic3d_RM_RAYTRACING
654 && myComputeInitStatus != OpenGl_RT_FAIL)
e276548b 655 {
a89742cf 656 if (UpdateRaytraceGeometry (OpenGl_GUM_CHECK) && myIsRaytraceDataValid)
657 {
658 myToRedrawGL = Standard_False;
659
660 // Only non-raytracable structures should be rendered in OpenGL mode.
661 Handle(OpenGl_RenderFilter) aRenderFilter = GetRenderFilter();
662 myRaytraceFilter->SetPrevRenderFilter (aRenderFilter);
663 SetRenderFilter (myRaytraceFilter);
664
665 Standard_Integer aSizeX = aFrameBuffer != NULL ? aFrameBuffer->GetVPSizeX() : myWidth;
666 Standard_Integer aSizeY = aFrameBuffer != NULL ? aFrameBuffer->GetVPSizeY() : myHeight;
667
668 if (myOpenGlFBO.IsNull())
669 {
670 myOpenGlFBO = new OpenGl_FrameBuffer();
671 }
672 if (myOpenGlFBO->GetVPSizeX() != aSizeX
673 || myOpenGlFBO->GetVPSizeY() != aSizeY)
674 {
675 myOpenGlFBO->Init (aGlCtx, aSizeX, aSizeY);
676 }
677
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;
682
683 myOpenGlFBO->BindBuffer (aGlCtx);
684 redraw1 (theCView, anEmptyCLayer, anEmptyCLayer, 0);
685 myOpenGlFBO->UnbindBuffer (aGlCtx);
686
687 const Standard_Boolean isImmediate = !myView->ImmediateStructures().IsEmpty();
688 Raytrace (theCView, aSizeX, aSizeY, isImmediate ? 0 : toSwap,
689 theCOverLayer, theCUnderLayer, aFrameBuffer);
690
691 if (isImmediate)
692 {
693 RedrawImmediate (theCView, theCUnderLayer, theCOverLayer, Standard_True);
694 }
695
696 SetRenderFilter (aRenderFilter);
697
698 theCView.WasRedrawnGL = Standard_False;
699 }
700 }
701
702 if (myToRedrawGL)
703 {
704 // draw entire frame using normal OpenGL pipeline
705 if (aFrameBuffer != NULL)
706 {
707 aFrameBuffer->BindBuffer (aGlCtx);
708 }
709
679ecdee 710 const Standard_Boolean isImmediate = !myView->ImmediateStructures().IsEmpty();
711 redraw1 (theCView, theCUnderLayer, theCOverLayer, isImmediate ? 0 : toSwap);
712 if (isImmediate)
e276548b 713 {
679ecdee 714 RedrawImmediate (theCView, theCUnderLayer, theCOverLayer, Standard_True);
e276548b 715 }
716
717 theCView.WasRedrawnGL = Standard_True;
e276548b 718 }
a174a3c5 719
720 if (aFrameBuffer != NULL)
721 {
722 aFrameBuffer->UnbindBuffer (aGlCtx);
723 // move back original viewport
724 glViewport (aViewPortBack[0], aViewPortBack[1], aViewPortBack[2], aViewPortBack[3]);
725 }
726
679ecdee 727#if defined(_WIN32) && defined(HAVE_VIDEOCAPTURE)
a174a3c5 728 if (OpenGl_AVIWriter_AllowWriting (theCView.DefWindow.XWindow))
729 {
730 GLint params[4];
731 glGetIntegerv (GL_VIEWPORT, params);
732 int nWidth = params[2] & ~0x7;
733 int nHeight = params[3] & ~0x7;
734
735 const int nBitsPerPixel = 24;
736 GLubyte* aDumpData = new GLubyte[nWidth * nHeight * nBitsPerPixel / 8];
737
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);
741 delete[] aDumpData;
742 }
743#endif
744
745 // reset render mode state
b5ac8292 746 aGlCtx->FetchState();
a174a3c5 747}
679ecdee 748
749// =======================================================================
750// function : redraw1
751// purpose :
752// =======================================================================
753void OpenGl_Workspace::redraw1 (const Graphic3d_CView& theCView,
754 const Aspect_CLayer2d& theCUnderLayer,
755 const Aspect_CLayer2d& theCOverLayer,
756 const int theToSwap)
757{
73192b37 758 if (myView.IsNull())
679ecdee 759 {
760 return;
761 }
762
763 // request reset of material
764 NamedStatus |= OPENGL_NS_RESMAT;
765
679ecdee 766 GLbitfield toClear = GL_COLOR_BUFFER_BIT;
767 if (myUseZBuffer)
768 {
769 glDepthFunc (GL_LEQUAL);
770 glDepthMask (GL_TRUE);
771 if (myUseDepthTest)
772 {
773 glEnable (GL_DEPTH_TEST);
774 }
775 else
776 {
777 glDisable (GL_DEPTH_TEST);
778 }
779
ca3c13d1 780 #if !defined(GL_ES_VERSION_2_0)
679ecdee 781 glClearDepth (1.0);
ca3c13d1 782 #else
783 glClearDepthf (1.0f);
784 #endif
679ecdee 785 toClear |= GL_DEPTH_BUFFER_BIT;
786 }
787 else
788 {
789 glDisable (GL_DEPTH_TEST);
790 }
791
a89742cf 792 if (!ToRedrawGL())
679ecdee 793 {
a89742cf 794 // set background to black
795 glClearColor (0.0f, 0.0f, 0.0f, 0.0f);
796 toClear |= GL_DEPTH_BUFFER_BIT; //
679ecdee 797 }
798 else
799 {
a89742cf 800 if (NamedStatus & OPENGL_NS_WHITEBACK)
801 {
802 // set background to white
803 glClearColor (1.0f, 1.0f, 1.0f, 1.0f);
804 toClear |= GL_DEPTH_BUFFER_BIT;
805 }
806 else
807 {
808 glClearColor (myBgColor.rgb[0], myBgColor.rgb[1], myBgColor.rgb[2], 0.0f);
809 }
679ecdee 810 }
811 glClear (toClear);
812
813 Handle(OpenGl_Workspace) aWS (this);
814 myView->Render (myPrintContext, aWS, theCView, theCUnderLayer, theCOverLayer);
815
816 // swap the buffers
817 if (theToSwap)
818 {
819 GetGlContext()->SwapBuffers();
820 myBackBufferRestored = Standard_False;
821 myIsImmediateDrawn = Standard_False;
822 }
823 else
824 {
a89742cf 825 glFlush(); //
826 myBackBufferRestored = Standard_True;//
827 myIsImmediateDrawn = Standard_False;//
679ecdee 828 }
829}
830
831// =======================================================================
832// function : copyBackToFront
833// purpose :
834// =======================================================================
835void OpenGl_Workspace::copyBackToFront()
836{
ca3c13d1 837#if !defined(GL_ES_VERSION_2_0)
ca3c13d1 838
c827ea3a 839 OpenGl_Mat4 aProjectMat;
840 OpenGl_Utils::Ortho2D<Standard_ShortReal> (aProjectMat,
841 0.f, static_cast<GLfloat> (myWidth), 0.f, static_cast<GLfloat> (myHeight));
842
843 myGlContext->WorldViewState.Push();
844 myGlContext->ProjectionState.Push();
845
846 myGlContext->WorldViewState.SetIdentity();
847 myGlContext->ProjectionState.SetCurrent (aProjectMat);
848
849 myGlContext->ApplyProjectionMatrix();
850 myGlContext->ApplyWorldViewMatrix();
679ecdee 851
852 DisableFeatures();
853
854 glDrawBuffer (GL_FRONT);
855 glReadBuffer (GL_BACK);
856
857 glRasterPos2i (0, 0);
858 glCopyPixels (0, 0, myWidth + 1, myHeight + 1, GL_COLOR);
859
860 EnableFeatures();
861
c827ea3a 862 myGlContext->WorldViewState.Pop();
863 myGlContext->ProjectionState.Pop();
864 myGlContext->ApplyProjectionMatrix();
679ecdee 865 glDrawBuffer (GL_BACK);
866
ca3c13d1 867#endif
679ecdee 868 myIsImmediateDrawn = Standard_False;
869}
870
871// =======================================================================
872// function : DisplayCallback
873// purpose :
874// =======================================================================
875void OpenGl_Workspace::DisplayCallback (const Graphic3d_CView& theCView,
876 Standard_Integer theReason)
877{
878 if (theCView.GDisplayCB == NULL)
879 {
880 return;
881 }
882
883 Aspect_GraphicCallbackStruct aCallData;
884 aCallData.reason = theReason;
885 aCallData.glContext = GetGlContext();
886 aCallData.wsID = theCView.WsId;
887 aCallData.viewID = theCView.ViewId;
888 theCView.GDisplayCB (theCView.DefWindow.XWindow, theCView.GClientData, &aCallData);
889}
890
891// =======================================================================
892// function : RedrawImmediate
893// purpose :
894// =======================================================================
895void OpenGl_Workspace::RedrawImmediate (const Graphic3d_CView& theCView,
896 const Aspect_CLayer2d& theCUnderLayer,
897 const Aspect_CLayer2d& theCOverLayer,
898 const Standard_Boolean theToForce)
899{
900 if (!Activate())
901 {
902 return;
903 }
904
905 GLboolean isDoubleBuffer = GL_FALSE;
ca3c13d1 906#if !defined(GL_ES_VERSION_2_0)
679ecdee 907 glGetBooleanv (GL_DOUBLEBUFFER, &isDoubleBuffer);
ca3c13d1 908#endif
679ecdee 909 if (myView->ImmediateStructures().IsEmpty())
910 {
911 if (theToForce
912 || !myIsImmediateDrawn)
913 {
914 myIsImmediateDrawn = Standard_False;
915 return;
916 }
917
918 if (myBackBufferRestored
919 && isDoubleBuffer)
920 {
921 copyBackToFront();
65812bd0 922 glFlush();
679ecdee 923 }
924 else
925 {
926 Redraw (theCView, theCUnderLayer, theCOverLayer);
927 }
928 return;
929 }
930
931 if (isDoubleBuffer && myTransientDrawToFront)
932 {
933 if (!myBackBufferRestored)
934 {
935 Redraw (theCView, theCUnderLayer, theCOverLayer);
936 return;
937 }
938 copyBackToFront();
939 MakeFrontBufCurrent();
940 }
941 else
942 {
943 myBackBufferRestored = Standard_False;
944 }
945 myIsImmediateDrawn = Standard_True;
946
947 NamedStatus |= OPENGL_NS_IMMEDIATE;
948 ///glDisable (GL_LIGHTING);
949 glDisable (GL_DEPTH_TEST);
950
951 Handle(OpenGl_Workspace) aWS (this);
952 for (OpenGl_SequenceOfStructure::Iterator anIter (myView->ImmediateStructures());
953 anIter.More(); anIter.Next())
954 {
955 const OpenGl_Structure* aStructure = anIter.Value();
956 aStructure->Render (aWS);
957 }
958
959 NamedStatus &= ~OPENGL_NS_IMMEDIATE;
960
961 if (isDoubleBuffer && myTransientDrawToFront)
962 {
963 glFlush();
964 MakeBackBufCurrent();
965 }
966}