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[occt.git] / src / OpenGl / OpenGl_Workspace.cxx
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b311480e 1// Created on: 2011-09-20
2// Created by: Sergey ZERCHANINOV
3// Copyright (c) 2011-2012 OPEN CASCADE SAS
4//
5// The content of this file is subject to the Open CASCADE Technology Public
6// License Version 6.5 (the "License"). You may not use the content of this file
7// except in compliance with the License. Please obtain a copy of the License
8// at http://www.opencascade.org and read it completely before using this file.
9//
10// The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
11// main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
12//
13// The Original Code and all software distributed under the License is
14// distributed on an "AS IS" basis, without warranty of any kind, and the
15// Initial Developer hereby disclaims all such warranties, including without
16// limitation, any warranties of merchantability, fitness for a particular
17// purpose or non-infringement. Please see the License for the specific terms
18// and conditions governing the rights and limitations under the License.
19
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>
a174a3c5 29#include <OpenGl_FrameBuffer.hxx>
bf75be98 30#include <OpenGl_Texture.hxx>
a174a3c5 31#include <OpenGl_Workspace.hxx>
4269bd1b 32#include <OpenGl_Element.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{
45 static const TEL_COLOUR myDefaultHighlightColor = { { 1.F, 1.F, 1.F, 1.F } };
46
47 static const OpenGl_AspectLine myDefaultAspectLine;
48 static const OpenGl_AspectFace myDefaultAspectFace;
49 static const OpenGl_AspectMarker myDefaultAspectMarker;
50 static const OpenGl_AspectText myDefaultAspectText;
51
52 static const OpenGl_TextParam myDefaultTextParam =
53 {
54 16, Graphic3d_HTA_LEFT, Graphic3d_VTA_BOTTOM
55 };
56
57 static const OpenGl_Matrix myDefaultMatrix =
58 {
59 {{ 1.0F, 0.0F, 0.0F, 0.0F },
60 { 0.0F, 1.0F, 0.0F, 0.0F },
61 { 0.0F, 0.0F, 1.0F, 0.0F },
62 { 0.0F, 0.0F, 0.0F, 1.0F }}
63 };
bf75be98 64
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65};
66
67// =======================================================================
68// function : OpenGl_Workspace
69// purpose :
70// =======================================================================
71OpenGl_Workspace::OpenGl_Workspace (const Handle(OpenGl_Display)& theDisplay,
72 const CALL_DEF_WINDOW& theCWindow,
5e27df78 73 Aspect_RenderingContext theGContext,
58655684 74 const Handle(OpenGl_Caps)& theCaps,
5e27df78 75 const Handle(OpenGl_Context)& theShareCtx)
58655684 76: OpenGl_Window (theDisplay, theCWindow, theGContext, theCaps, theShareCtx),
a174a3c5 77 NamedStatus (0),
a174a3c5 78 HighlightColor (&myDefaultHighlightColor),
79 //
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80 myIsTransientOpen (Standard_False),
81 myRetainMode (Standard_False),
a174a3c5 82 myTransientDrawToFront (Standard_True),
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83 myUseTransparency (Standard_False),
84 myUseZBuffer (Standard_False),
85 myUseDepthTest (Standard_True),
86 myUseGLLight (Standard_True),
87 myBackBufferRestored (Standard_False),
88 //
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89 AspectLine_set (&myDefaultAspectLine),
90 AspectLine_applied (NULL),
91 AspectFace_set (&myDefaultAspectFace),
92 AspectFace_applied (NULL),
93 AspectMarker_set (&myDefaultAspectMarker),
94 AspectMarker_applied (NULL),
95 AspectText_set (&myDefaultAspectText),
96 AspectText_applied (NULL),
97 TextParam_set (&myDefaultTextParam),
98 TextParam_applied (NULL),
99 ViewMatrix_applied (&myDefaultMatrix),
100 StructureMatrix_applied (&myDefaultMatrix),
101 PolygonOffset_applied (NULL)
102{
103 theDisplay->InitAttributes();
104
105 // General initialization of the context
106
107 // Eviter d'avoir les faces mal orientees en noir.
108 // Pourrait etre utiliser pour detecter les problemes d'orientation
bf75be98 109 glLightModeli ((GLenum )GL_LIGHT_MODEL_TWO_SIDE, GL_TRUE);
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110
111 // Optimisation pour le Fog et l'antialiasing
112 glHint (GL_FOG_HINT, GL_FASTEST);
113 glHint (GL_POINT_SMOOTH_HINT, GL_FASTEST);
114 glHint (GL_LINE_SMOOTH_HINT, GL_FASTEST);
115 glHint (GL_POLYGON_SMOOTH_HINT, GL_FASTEST);
116
117 // Polygon Offset
118 EnablePolygonOffset();
119}
120
121// =======================================================================
1981cb22 122// function : SetImmediateModeDrawToFront
123// purpose :
124// =======================================================================
125Standard_Boolean OpenGl_Workspace::SetImmediateModeDrawToFront (const Standard_Boolean theDrawToFrontBuffer)
126{
127 const Standard_Boolean aPrevMode = myTransientDrawToFront;
128 myTransientDrawToFront = theDrawToFrontBuffer;
129 return aPrevMode;
130}
131
132// =======================================================================
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133// function : ~OpenGl_Workspace
134// purpose :
135// =======================================================================
136OpenGl_Workspace::~OpenGl_Workspace()
137{
138}
139
140// =======================================================================
141// function : Activate
142// purpose :
143// =======================================================================
144Standard_Boolean OpenGl_Workspace::Activate()
145{
146 if (!OpenGl_Window::Activate())
147 return Standard_False;
148
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149 ViewMatrix_applied = &myDefaultMatrix;
150 StructureMatrix_applied = &myDefaultMatrix;
26395493 151
152 ResetAppliedAspect();
153
154 return Standard_True;
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155}
156
157// =======================================================================
158// function : UseTransparency
159// purpose : call_togl_transparency
160// =======================================================================
161void OpenGl_Workspace::UseTransparency (const Standard_Boolean theFlag)
162{
de75ed09 163 myUseTransparency = theFlag;
2166f0fa 164}
26395493 165
166//=======================================================================
167//function : ResetAppliedAspect
168//purpose : Sets default values of GL parameters in accordance with default aspects
169//=======================================================================
170void OpenGl_Workspace::ResetAppliedAspect()
171{
bf75be98 172 NamedStatus = !myTextureBound.IsNull() ? OPENGL_NS_TEXTURE : 0;
26395493 173 HighlightColor = &myDefaultHighlightColor;
174 AspectLine_set = &myDefaultAspectLine;
175 AspectLine_applied = NULL;
176 AspectFace_set = &myDefaultAspectFace;
177 AspectFace_applied = NULL;
178 AspectMarker_set = &myDefaultAspectMarker;
179 AspectMarker_applied = NULL;
180 AspectText_set = &myDefaultAspectText;
181 AspectText_applied = NULL;
182 TextParam_set = &myDefaultTextParam;
183 TextParam_applied = NULL;
184 PolygonOffset_applied = NULL;
185
186 AspectLine(Standard_True);
187 AspectFace(Standard_True);
188 AspectMarker(Standard_True);
189 AspectText(Standard_True);
190}
bf75be98 191
192// =======================================================================
193// function : DisableTexture
194// purpose :
195// =======================================================================
196Handle(OpenGl_Texture) OpenGl_Workspace::DisableTexture()
197{
198 if (myTextureBound.IsNull())
199 {
200 return myTextureBound;
201 }
202
203 // reset texture matrix because some code may expect it is identity
204 GLint aMatrixMode = GL_TEXTURE;
205 glGetIntegerv (GL_MATRIX_MODE, &aMatrixMode);
206 glMatrixMode (GL_TEXTURE);
207 glLoadIdentity();
208 glMatrixMode (aMatrixMode);
209
210 myTextureBound->Unbind (myGlContext);
211 switch (myTextureBound->GetTarget())
212 {
213 case GL_TEXTURE_1D:
214 {
215 if (myTextureBound->GetParams()->GenMode() != GL_NONE)
216 {
217 glDisable (GL_TEXTURE_GEN_S);
218 }
219 glDisable (GL_TEXTURE_1D);
220 break;
221 }
222 case GL_TEXTURE_2D:
223 {
224 if (myTextureBound->GetParams()->GenMode() != GL_NONE)
225 {
226 glDisable (GL_TEXTURE_GEN_S);
227 glDisable (GL_TEXTURE_GEN_T);
a577aaab 228 if (myTextureBound->GetParams()->GenMode() == Graphic3d_TOTM_SPRITE)
229 {
230 glDisable (GL_POINT_SPRITE);
231 }
bf75be98 232 }
233 glDisable (GL_TEXTURE_2D);
234 break;
235 }
236 default: break;
237 }
238
239 Handle(OpenGl_Texture) aPrevTexture = myTextureBound;
240 myTextureBound.Nullify();
241 return aPrevTexture;
242}
243
244// =======================================================================
245// function : setTextureParams
246// purpose :
247// =======================================================================
248void OpenGl_Workspace::setTextureParams (Handle(OpenGl_Texture)& theTexture,
249 const Handle(Graphic3d_TextureParams)& theParams)
250{
251 const Handle(Graphic3d_TextureParams)& aParams = theParams.IsNull() ? theTexture->GetParams() : theParams;
252 if (aParams.IsNull())
253 {
254 return;
255 }
256
257 GLint aMatrixMode = GL_TEXTURE;
258 glGetIntegerv (GL_MATRIX_MODE, &aMatrixMode);
259
260 // setup texture matrix
261 glMatrixMode (GL_TEXTURE);
262 glLoadIdentity();
263 const Graphic3d_Vec2& aScale = aParams->Scale();
264 const Graphic3d_Vec2& aTrans = aParams->Translation();
265 glScalef ( aScale.x(), aScale.y(), 1.0f);
266 glTranslatef (-aTrans.x(), -aTrans.y(), 0.0f);
267 glRotatef (-aParams->Rotation(), 0.0f, 0.0f, 1.0f);
268
269 // setup generation of texture coordinates
270 switch (aParams->GenMode())
271 {
272 case Graphic3d_TOTM_OBJECT:
273 {
274 glTexGeni (GL_S, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
275 glTexGenfv (GL_S, GL_OBJECT_PLANE, aParams->GenPlaneS().GetData());
276 if (theTexture->GetTarget() != GL_TEXTURE_1D)
277 {
278 glTexGeni (GL_T, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
279 glTexGenfv (GL_T, GL_OBJECT_PLANE, aParams->GenPlaneT().GetData());
280 }
281 break;
282 }
283 case Graphic3d_TOTM_SPHERE:
284 {
285 glTexGeni (GL_S, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
286 if (theTexture->GetTarget() != GL_TEXTURE_1D)
287 {
288 glTexGeni (GL_T, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
289 }
290 break;
291 }
292 case Graphic3d_TOTM_EYE:
293 {
294 glMatrixMode (GL_MODELVIEW);
295 glPushMatrix();
296 glLoadIdentity();
297
298 glTexGeni (GL_S, GL_TEXTURE_GEN_MODE, GL_EYE_LINEAR);
299 glTexGenfv (GL_S, GL_EYE_PLANE, aParams->GenPlaneS().GetData());
300
301 if (theTexture->GetTarget() != GL_TEXTURE_1D)
302 {
303 glTexGeni (GL_T, GL_TEXTURE_GEN_MODE, GL_EYE_LINEAR);
304 glTexGenfv (GL_T, GL_EYE_PLANE, aParams->GenPlaneT().GetData());
305 }
306 glPopMatrix();
307 break;
308 }
a577aaab 309 case Graphic3d_TOTM_SPRITE:
310 {
311 if (GetGlContext()->core20 != NULL)
312 {
313 glEnable (GL_POINT_SPRITE);
314 glTexEnvi (GL_POINT_SPRITE, GL_COORD_REPLACE, GL_TRUE);
315 glTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
316 GetGlContext()->core15->glPointParameteri (GL_POINT_SPRITE_COORD_ORIGIN, GL_LOWER_LEFT);
317 }
318 break;
319 }
bf75be98 320 case Graphic3d_TOTM_MANUAL:
321 default: break;
322 }
323
324 // setup lighting
a577aaab 325 if (aParams->GenMode() != Graphic3d_TOTM_SPRITE)
326 {
327 glTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, aParams->IsModulate() ? GL_MODULATE : GL_DECAL);
328 }
bf75be98 329
330 // setup texture filtering and wrapping
331 //if (theTexture->GetParams() != theParams)
332 const GLenum aFilter = (aParams->Filter() == Graphic3d_TOTF_NEAREST) ? GL_NEAREST : GL_LINEAR;
333 const GLenum aWrapMode = aParams->IsRepeat() ? GL_REPEAT : GL_CLAMP;
334 switch (theTexture->GetTarget())
335 {
336 case GL_TEXTURE_1D:
337 {
338 glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, aFilter);
339 glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, aFilter);
340 glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_WRAP_S, aWrapMode);
341 break;
342 }
343 case GL_TEXTURE_2D:
344 {
345 GLenum aFilterMin = aFilter;
346 if (theTexture->HasMipmaps())
347 {
348 aFilterMin = GL_NEAREST_MIPMAP_NEAREST;
349 if (aParams->Filter() == Graphic3d_TOTF_BILINEAR)
350 {
351 aFilterMin = GL_LINEAR_MIPMAP_NEAREST;
352 }
353 else if (aParams->Filter() == Graphic3d_TOTF_TRILINEAR)
354 {
355 aFilterMin = GL_LINEAR_MIPMAP_LINEAR;
356 }
357
358 if (myGlContext->extAnis)
359 {
360 // setup degree of anisotropy filter
361 const GLint aMaxDegree = myGlContext->MaxDegreeOfAnisotropy();
362 switch (aParams->AnisoFilter())
363 {
364 case Graphic3d_LOTA_QUALITY:
365 {
366 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, aMaxDegree);
367 break;
368 }
369 case Graphic3d_LOTA_MIDDLE:
370 {
371
372 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, (aMaxDegree <= 4) ? 2 : (aMaxDegree / 2));
373 break;
374 }
375 case Graphic3d_LOTA_FAST:
376 {
377 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, 2);
378 break;
379 }
380 case Graphic3d_LOTA_OFF:
381 default:
382 {
383 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, 1);
384 break;
385 }
386 }
387 }
388 }
389 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, aFilterMin);
390 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, aFilter);
391 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, aWrapMode);
392 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, aWrapMode);
393 break;
394 }
395 default: break;
396 }
397
398 switch (theTexture->GetTarget())
399 {
400 case GL_TEXTURE_1D:
401 {
402 if (aParams->GenMode() != Graphic3d_TOTM_MANUAL)
403 {
404 glEnable (GL_TEXTURE_GEN_S);
405 }
406 glEnable (GL_TEXTURE_1D);
407 break;
408 }
409 case GL_TEXTURE_2D:
410 {
411 if (aParams->GenMode() != Graphic3d_TOTM_MANUAL)
412 {
413 glEnable (GL_TEXTURE_GEN_S);
414 glEnable (GL_TEXTURE_GEN_T);
415 }
416 glEnable (GL_TEXTURE_2D);
417 break;
418 }
419 default: break;
420 }
421
422 glMatrixMode (aMatrixMode); // turn back active matrix
423 theTexture->SetParams (aParams);
424}
425
426// =======================================================================
427// function : EnableTexture
428// purpose :
429// =======================================================================
430Handle(OpenGl_Texture) OpenGl_Workspace::EnableTexture (const Handle(OpenGl_Texture)& theTexture,
431 const Handle(Graphic3d_TextureParams)& theParams)
432{
433 if (theTexture.IsNull() || !theTexture->IsValid())
434 {
435 return DisableTexture();
436 }
437
bca1d6e2 438 if (myTextureBound == theTexture
439 && (theParams.IsNull() || theParams == theTexture->GetParams()))
bf75be98 440 {
bca1d6e2 441 // already bound
442 return myTextureBound;
bf75be98 443 }
444
445 Handle(OpenGl_Texture) aPrevTexture = DisableTexture();
446 myTextureBound = theTexture;
447 myTextureBound->Bind (myGlContext);
448 setTextureParams (myTextureBound, theParams);
449
450 return aPrevTexture;
451}
a174a3c5 452
453// =======================================================================
454// function : Redraw
455// purpose :
456// =======================================================================
457void OpenGl_Workspace::Redraw (const Graphic3d_CView& theCView,
458 const Aspect_CLayer2d& theCUnderLayer,
459 const Aspect_CLayer2d& theCOverLayer)
460{
461 if (!Activate())
462 {
463 return;
464 }
465
466 // release pending GL resources
467 Handle(OpenGl_Context) aGlCtx = GetGlContext();
468 aGlCtx->ReleaseDelayed();
469
470 // cache render mode state
471 GLint aRendMode = GL_RENDER;
472 glGetIntegerv (GL_RENDER_MODE, &aRendMode);
473 aGlCtx->SetFeedback (aRendMode == GL_FEEDBACK);
474
475 Tint toSwap = (aRendMode == GL_RENDER); // swap buffers
476 GLint aViewPortBack[4];
477 OpenGl_FrameBuffer* aFrameBuffer = (OpenGl_FrameBuffer* )theCView.ptrFBO;
478 if (aFrameBuffer != NULL)
479 {
480 glGetIntegerv (GL_VIEWPORT, aViewPortBack);
fd4a6963 481 aFrameBuffer->SetupViewport (aGlCtx);
482 aFrameBuffer->BindBuffer (aGlCtx);
a174a3c5 483 toSwap = 0; // no need to swap buffers
484 }
485
486 Redraw1 (theCView, theCUnderLayer, theCOverLayer, toSwap);
487 if (aFrameBuffer == NULL || !myTransientDrawToFront)
488 {
489 RedrawImmediatMode();
490 }
491
492 if (aFrameBuffer != NULL)
493 {
494 aFrameBuffer->UnbindBuffer (aGlCtx);
495 // move back original viewport
496 glViewport (aViewPortBack[0], aViewPortBack[1], aViewPortBack[2], aViewPortBack[3]);
497 }
498
499#if (defined(_WIN32) || defined(__WIN32__)) && defined(HAVE_VIDEOCAPTURE)
500 if (OpenGl_AVIWriter_AllowWriting (theCView.DefWindow.XWindow))
501 {
502 GLint params[4];
503 glGetIntegerv (GL_VIEWPORT, params);
504 int nWidth = params[2] & ~0x7;
505 int nHeight = params[3] & ~0x7;
506
507 const int nBitsPerPixel = 24;
508 GLubyte* aDumpData = new GLubyte[nWidth * nHeight * nBitsPerPixel / 8];
509
510 glPixelStorei (GL_PACK_ALIGNMENT, 1);
511 glReadPixels (0, 0, nWidth, nHeight, GL_BGR_EXT, GL_UNSIGNED_BYTE, aDumpData);
512 OpenGl_AVIWriter_AVIWriter (aDumpData, nWidth, nHeight, nBitsPerPixel);
513 delete[] aDumpData;
514 }
515#endif
516
517 // reset render mode state
518 aGlCtx->SetFeedback (Standard_False);
519}