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[occt.git] / src / OpenGl / OpenGl_PrimitiveArray.cxx
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b311480e 1// Created on: 2011-07-13
2// Created by: Sergey ZERCHANINOV
de75ed09 3// Copyright (c) 2011-2013 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
bf5f0ca2 16#include <OpenGl_Aspects.hxx>
30f0ad28 17#include <OpenGl_Context.hxx>
2166f0fa 18#include <OpenGl_GraphicDriver.hxx>
30f0ad28 19#include <OpenGl_IndexBuffer.hxx>
a577aaab 20#include <OpenGl_PointSprite.hxx>
30f0ad28 21#include <OpenGl_PrimitiveArray.hxx>
cc8cbabe 22#include <OpenGl_Sampler.hxx>
30f0ad28 23#include <OpenGl_ShaderManager.hxx>
24#include <OpenGl_ShaderProgram.hxx>
2166f0fa 25#include <OpenGl_Structure.hxx>
7d3e64ef 26#include <OpenGl_VertexBufferCompat.hxx>
6ef0d6f1 27#include <OpenGl_View.hxx>
bf75be98 28#include <OpenGl_Workspace.hxx>
6c6aadb1 29#include <Graphic3d_TextureParams.hxx>
e99a2f7c 30#include <NCollection_AlignedAllocator.hxx>
2166f0fa 31
30f0ad28 32namespace
33{
871fa103 34 //! Convert data type to GL info
35 inline GLenum toGlDataType (const Graphic3d_TypeOfData theType,
36 GLint& theNbComp)
37 {
38 switch (theType)
39 {
40 case Graphic3d_TOD_USHORT:
41 theNbComp = 1;
42 return GL_UNSIGNED_SHORT;
43 case Graphic3d_TOD_UINT:
44 theNbComp = 1;
45 return GL_UNSIGNED_INT;
46 case Graphic3d_TOD_VEC2:
47 theNbComp = 2;
48 return GL_FLOAT;
49 case Graphic3d_TOD_VEC3:
50 theNbComp = 3;
51 return GL_FLOAT;
52 case Graphic3d_TOD_VEC4:
53 theNbComp = 4;
54 return GL_FLOAT;
55 case Graphic3d_TOD_VEC4UB:
56 theNbComp = 4;
57 return GL_UNSIGNED_BYTE;
4a535d3f 58 case Graphic3d_TOD_FLOAT:
59 theNbComp = 1;
60 return GL_FLOAT;
871fa103 61 }
62 theNbComp = 0;
63 return GL_NONE;
64 }
65
30f0ad28 66}
67
871fa103 68//! Auxiliary template for VBO with interleaved attributes.
7d3e64ef 69template<class TheBaseClass, int NbAttributes>
70class OpenGl_VertexBufferT : public TheBaseClass
7fd59977 71{
871fa103 72public:
73
74 //! Create uninitialized VBO.
871fa103 75 OpenGl_VertexBufferT (const Graphic3d_Buffer& theAttribs)
da87ddc3 76 : Stride (theAttribs.IsInterleaved() ? theAttribs.Stride : 0)
871fa103 77 {
78 memcpy (Attribs, theAttribs.AttributesArray(), sizeof(Graphic3d_Attribute) * NbAttributes);
79 }
80
81 virtual bool HasColorAttribute() const
82 {
83 for (Standard_Integer anAttribIter = 0; anAttribIter < NbAttributes; ++anAttribIter)
84 {
85 const Graphic3d_Attribute& anAttrib = Attribs[anAttribIter];
86 if (anAttrib.Id == Graphic3d_TOA_COLOR)
87 {
88 return true;
89 }
90 }
91 return false;
92 }
93
7d3e64ef 94 virtual bool HasNormalAttribute() const
95 {
96 for (Standard_Integer anAttribIter = 0; anAttribIter < NbAttributes; ++anAttribIter)
97 {
98 const Graphic3d_Attribute& anAttrib = Attribs[anAttribIter];
99 if (anAttrib.Id == Graphic3d_TOA_NORM)
100 {
101 return true;
102 }
103 }
104 return false;
105 }
106
107 virtual void BindPositionAttribute (const Handle(OpenGl_Context)& theGlCtx) const
871fa103 108 {
7d3e64ef 109 if (!TheBaseClass::IsValid())
871fa103 110 {
111 return;
112 }
113
7d3e64ef 114 TheBaseClass::Bind (theGlCtx);
871fa103 115 GLint aNbComp;
7d3e64ef 116 const GLubyte* anOffset = TheBaseClass::myOffset;
da87ddc3 117 const Standard_Size aMuliplier = Stride != 0 ? 1 : TheBaseClass::myElemsNb;
871fa103 118 for (Standard_Integer anAttribIter = 0; anAttribIter < NbAttributes; ++anAttribIter)
119 {
120 const Graphic3d_Attribute& anAttrib = Attribs[anAttribIter];
121 const GLenum aDataType = toGlDataType (anAttrib.DataType, aNbComp);
34253146 122 if (anAttrib.Id == Graphic3d_TOA_POS
123 && aDataType != GL_NONE)
871fa103 124 {
7d3e64ef 125 TheBaseClass::bindAttribute (theGlCtx, Graphic3d_TOA_POS, aNbComp, aDataType, Stride, anOffset);
871fa103 126 break;
127 }
128
da87ddc3 129 anOffset += aMuliplier * Graphic3d_Attribute::Stride (anAttrib.DataType);
871fa103 130 }
131 }
132
7d3e64ef 133 virtual void BindAllAttributes (const Handle(OpenGl_Context)& theGlCtx) const
871fa103 134 {
7d3e64ef 135 if (!TheBaseClass::IsValid())
871fa103 136 {
137 return;
138 }
139
7d3e64ef 140 TheBaseClass::Bind (theGlCtx);
871fa103 141 GLint aNbComp;
7d3e64ef 142 const GLubyte* anOffset = TheBaseClass::myOffset;
da87ddc3 143 const Standard_Size aMuliplier = Stride != 0 ? 1 : TheBaseClass::myElemsNb;
871fa103 144 for (Standard_Integer anAttribIter = 0; anAttribIter < NbAttributes; ++anAttribIter)
145 {
146 const Graphic3d_Attribute& anAttrib = Attribs[anAttribIter];
147 const GLenum aDataType = toGlDataType (anAttrib.DataType, aNbComp);
34253146 148 if (aDataType != GL_NONE)
871fa103 149 {
34253146 150 TheBaseClass::bindAttribute (theGlCtx, anAttrib.Id, aNbComp, aDataType, Stride, anOffset);
871fa103 151 }
da87ddc3 152 anOffset += aMuliplier * Graphic3d_Attribute::Stride (anAttrib.DataType);
871fa103 153 }
154 }
155
7d3e64ef 156 virtual void UnbindAllAttributes (const Handle(OpenGl_Context)& theGlCtx) const
871fa103 157 {
7d3e64ef 158 if (!TheBaseClass::IsValid())
871fa103 159 {
160 return;
161 }
7d3e64ef 162 TheBaseClass::Unbind (theGlCtx);
871fa103 163
164 for (Standard_Integer anAttribIter = 0; anAttribIter < NbAttributes; ++anAttribIter)
165 {
166 const Graphic3d_Attribute& anAttrib = Attribs[anAttribIter];
7d3e64ef 167 TheBaseClass::unbindAttribute (theGlCtx, anAttrib.Id);
871fa103 168 }
169 }
170
34253146 171private:
871fa103 172
173 Graphic3d_Attribute Attribs[NbAttributes];
174 Standard_Integer Stride;
175
176};
7fd59977 177
2166f0fa
SK
178// =======================================================================
179// function : clearMemoryGL
180// purpose :
181// =======================================================================
5e27df78 182void OpenGl_PrimitiveArray::clearMemoryGL (const Handle(OpenGl_Context)& theGlCtx) const
7fd59977 183{
871fa103 184 if (!myVboIndices.IsNull())
2166f0fa 185 {
871fa103 186 myVboIndices->Release (theGlCtx.operator->());
187 myVboIndices.Nullify();
188 }
189 if (!myVboAttribs.IsNull())
190 {
191 myVboAttribs->Release (theGlCtx.operator->());
192 myVboAttribs.Nullify();
2166f0fa 193 }
7fd59977 194}
195
2166f0fa 196// =======================================================================
7d3e64ef 197// function : initNormalVbo
2166f0fa
SK
198// purpose :
199// =======================================================================
7d3e64ef 200Standard_Boolean OpenGl_PrimitiveArray::initNormalVbo (const Handle(OpenGl_Context)& theCtx) const
7fd59977 201{
7d3e64ef 202 switch (myAttribs->NbAttributes)
2166f0fa 203 {
7d3e64ef 204 case 1: myVboAttribs = new OpenGl_VertexBufferT<OpenGl_VertexBuffer, 1> (*myAttribs); break;
205 case 2: myVboAttribs = new OpenGl_VertexBufferT<OpenGl_VertexBuffer, 2> (*myAttribs); break;
206 case 3: myVboAttribs = new OpenGl_VertexBufferT<OpenGl_VertexBuffer, 3> (*myAttribs); break;
207 case 4: myVboAttribs = new OpenGl_VertexBufferT<OpenGl_VertexBuffer, 4> (*myAttribs); break;
208 case 5: myVboAttribs = new OpenGl_VertexBufferT<OpenGl_VertexBuffer, 5> (*myAttribs); break;
209 case 6: myVboAttribs = new OpenGl_VertexBufferT<OpenGl_VertexBuffer, 6> (*myAttribs); break;
210 case 7: myVboAttribs = new OpenGl_VertexBufferT<OpenGl_VertexBuffer, 7> (*myAttribs); break;
211 case 8: myVboAttribs = new OpenGl_VertexBufferT<OpenGl_VertexBuffer, 8> (*myAttribs); break;
212 case 9: myVboAttribs = new OpenGl_VertexBufferT<OpenGl_VertexBuffer, 9> (*myAttribs); break;
213 case 10: myVboAttribs = new OpenGl_VertexBufferT<OpenGl_VertexBuffer, 10>(*myAttribs); break;
214 }
215
da87ddc3 216 const Standard_Boolean isAttribMutable = myAttribs->IsMutable();
217 const Standard_Boolean isAttribInterleaved = myAttribs->IsInterleaved();
218 if (myAttribs->NbElements != myAttribs->NbMaxElements()
219 && myIndices.IsNull()
220 && (!isAttribInterleaved || isAttribMutable))
221 {
222 throw Standard_ProgramError ("OpenGl_PrimitiveArray::buildVBO() - vertex attribute data with reserved size is not supported");
223 }
224
15669413 225 // specify data type as Byte and NbComponents as Stride, so that OpenGl_VertexBuffer::EstimatedDataSize() will return correct value
da87ddc3 226 const Standard_Integer aNbVertexes = (isAttribMutable || !isAttribInterleaved) ? myAttribs->NbMaxElements() : myAttribs->NbElements;
227 if (!myVboAttribs->init (theCtx, myAttribs->Stride, aNbVertexes, myAttribs->Data(), GL_UNSIGNED_BYTE, myAttribs->Stride))
7d3e64ef 228 {
da87ddc3 229 TCollection_ExtendedString aMsg = TCollection_ExtendedString("VBO creation for Primitive Array has failed for ") + aNbVertexes + " vertices. Out of memory?";
3b523c4c 230 theCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_PERFORMANCE, 0, GL_DEBUG_SEVERITY_LOW, aMsg);
7d3e64ef 231
232 clearMemoryGL (theCtx);
5e27df78 233 return Standard_False;
2166f0fa 234 }
7d3e64ef 235 else if (myIndices.IsNull())
236 {
da87ddc3 237 if (isAttribMutable && isAttribInterleaved)
238 {
239 // for mutable interlaced array we can change dynamically number of vertexes (they will be just skipped at the end of buffer);
240 // this doesn't matter in case if we have indexed array
241 myVboAttribs->SetElemsNb (myAttribs->NbElements);
242 }
7d3e64ef 243 return Standard_True;
244 }
7fd59977 245
da87ddc3 246 const Standard_Integer aNbIndexes = !myIndices->IsMutable() ? myIndices->NbElements : myIndices->NbMaxElements();
7d3e64ef 247 myVboIndices = new OpenGl_IndexBuffer();
248 bool isOk = false;
249 switch (myIndices->Stride)
250 {
251 case 2:
252 {
da87ddc3 253 isOk = myVboIndices->Init (theCtx, 1, aNbIndexes, reinterpret_cast<const GLushort*> (myIndices->Data()));
254 myVboIndices->SetElemsNb (myIndices->NbElements);
255 myIndices->Validate();
7d3e64ef 256 break;
257 }
258 case 4:
259 {
da87ddc3 260 isOk = myVboIndices->Init (theCtx, 1, aNbIndexes, reinterpret_cast<const GLuint*> (myIndices->Data()));
261 myVboIndices->SetElemsNb (myIndices->NbElements);
262 myIndices->Validate();
7d3e64ef 263 break;
264 }
265 default:
266 {
267 clearMemoryGL (theCtx);
268 return Standard_False;
269 }
270 }
271 if (!isOk)
2166f0fa 272 {
da87ddc3 273 TCollection_ExtendedString aMsg = TCollection_ExtendedString("VBO creation for Primitive Array has failed for ") + aNbIndexes + " indices. Out of memory?";
3b523c4c 274 theCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_PERFORMANCE, 0, GL_DEBUG_SEVERITY_LOW, aMsg);
7d3e64ef 275 clearMemoryGL (theCtx);
276 return Standard_False;
7fd59977 277 }
7d3e64ef 278 return Standard_True;
279}
871fa103 280
7d3e64ef 281// =======================================================================
282// function : buildVBO
283// purpose :
284// =======================================================================
285Standard_Boolean OpenGl_PrimitiveArray::buildVBO (const Handle(OpenGl_Context)& theCtx,
286 const Standard_Boolean theToKeepData) const
287{
288 bool isNormalMode = theCtx->ToUseVbo();
536d98e2 289 clearMemoryGL (theCtx);
7d3e64ef 290 if (myAttribs.IsNull()
291 || myAttribs->IsEmpty()
292 || myAttribs->NbElements < 1
293 || myAttribs->NbAttributes < 1
294 || myAttribs->NbAttributes > 10)
2166f0fa 295 {
7d3e64ef 296 // vertices should be always defined - others are optional
871fa103 297 return Standard_False;
7fd59977 298 }
871fa103 299
7d3e64ef 300 if (isNormalMode
301 && initNormalVbo (theCtx))
302 {
303 if (!theCtx->caps->keepArrayData
da87ddc3 304 && !theToKeepData
305 && !myAttribs->IsMutable())
7d3e64ef 306 {
307 myIndices.Nullify();
308 myAttribs.Nullify();
309 }
da87ddc3 310 else
311 {
312 myAttribs->Validate();
313 }
7d3e64ef 314 return Standard_True;
315 }
316
317 Handle(OpenGl_VertexBufferCompat) aVboAttribs;
318 switch (myAttribs->NbAttributes)
319 {
320 case 1: aVboAttribs = new OpenGl_VertexBufferT<OpenGl_VertexBufferCompat, 1> (*myAttribs); break;
321 case 2: aVboAttribs = new OpenGl_VertexBufferT<OpenGl_VertexBufferCompat, 2> (*myAttribs); break;
322 case 3: aVboAttribs = new OpenGl_VertexBufferT<OpenGl_VertexBufferCompat, 3> (*myAttribs); break;
323 case 4: aVboAttribs = new OpenGl_VertexBufferT<OpenGl_VertexBufferCompat, 4> (*myAttribs); break;
324 case 5: aVboAttribs = new OpenGl_VertexBufferT<OpenGl_VertexBufferCompat, 5> (*myAttribs); break;
325 case 6: aVboAttribs = new OpenGl_VertexBufferT<OpenGl_VertexBufferCompat, 6> (*myAttribs); break;
326 case 7: aVboAttribs = new OpenGl_VertexBufferT<OpenGl_VertexBufferCompat, 7> (*myAttribs); break;
327 case 8: aVboAttribs = new OpenGl_VertexBufferT<OpenGl_VertexBufferCompat, 8> (*myAttribs); break;
328 case 9: aVboAttribs = new OpenGl_VertexBufferT<OpenGl_VertexBufferCompat, 9> (*myAttribs); break;
329 case 10: aVboAttribs = new OpenGl_VertexBufferT<OpenGl_VertexBufferCompat, 10>(*myAttribs); break;
330 }
331 aVboAttribs->initLink (myAttribs, 0, myAttribs->NbElements, GL_NONE);
871fa103 332 if (!myIndices.IsNull())
2166f0fa 333 {
7d3e64ef 334 Handle(OpenGl_VertexBufferCompat) aVboIndices = new OpenGl_VertexBufferCompat();
871fa103 335 switch (myIndices->Stride)
5e27df78 336 {
871fa103 337 case 2:
338 {
7d3e64ef 339 aVboIndices->initLink (myIndices, 1, myIndices->NbElements, GL_UNSIGNED_SHORT);
871fa103 340 break;
341 }
342 case 4:
343 {
7d3e64ef 344 aVboIndices->initLink (myIndices, 1, myIndices->NbElements, GL_UNSIGNED_INT);
871fa103 345 break;
346 }
7d3e64ef 347 default:
348 {
349 return Standard_False;
350 }
5e27df78 351 }
7d3e64ef 352 myVboIndices = aVboIndices;
2166f0fa 353 }
7d3e64ef 354 myVboAttribs = aVboAttribs;
355 if (!theCtx->caps->keepArrayData
356 && !theToKeepData)
e276548b 357 {
7d3e64ef 358 // does not make sense for compatibility mode
359 //myIndices.Nullify();
360 //myAttribs.Nullify();
e276548b 361 }
7d3e64ef 362
2166f0fa 363 return Standard_True;
7fd59977 364}
365
2166f0fa 366// =======================================================================
da87ddc3 367// function : updateVBO
368// purpose :
369// =======================================================================
370void OpenGl_PrimitiveArray::updateVBO (const Handle(OpenGl_Context)& theCtx) const
371{
372 if (!myAttribs.IsNull())
373 {
374 Graphic3d_BufferRange aRange = myAttribs->InvalidatedRange();
375 if (!aRange.IsEmpty()
376 && myVboAttribs->IsValid()
377 && !myVboAttribs->IsVirtual())
378 {
379 myVboAttribs->Bind (theCtx);
380 theCtx->core15fwd->glBufferSubData (myVboAttribs->GetTarget(),
381 aRange.Start,
382 aRange.Length,
383 myAttribs->Data() + aRange.Start);
384 myVboAttribs->Unbind (theCtx);
385 if (myAttribs->IsInterleaved())
386 {
387 myVboAttribs->SetElemsNb (myAttribs->NbElements);
388 }
389 }
390 myAttribs->Validate();
391 }
392 if (!myIndices.IsNull())
393 {
394 Graphic3d_BufferRange aRange = myIndices->InvalidatedRange();
395 if (!aRange.IsEmpty()
396 && myVboIndices->IsValid()
397 && !myVboIndices->IsVirtual())
398 {
399 myVboIndices->Bind (theCtx);
400 theCtx->core15fwd->glBufferSubData (myVboIndices->GetTarget(),
401 aRange.Start,
402 aRange.Length,
403 myIndices->Data() + aRange.Start);
404 myVboIndices->Unbind (theCtx);
405 myVboIndices->SetElemsNb (myIndices->NbElements);
406 }
407 myIndices->Validate();
408 }
409}
410
411// =======================================================================
7d3e64ef 412// function : drawArray
2166f0fa
SK
413// purpose :
414// =======================================================================
7d3e64ef 415void OpenGl_PrimitiveArray::drawArray (const Handle(OpenGl_Workspace)& theWorkspace,
8625ef7e 416 const Graphic3d_Vec4* theFaceColors,
417 const Standard_Boolean theHasVertColor) const
7fd59977 418{
7d3e64ef 419 if (myVboAttribs.IsNull())
2166f0fa 420 {
ca3c13d1 421 #if !defined(GL_ES_VERSION_2_0)
7d3e64ef 422 if (myDrawMode == GL_POINTS)
423 {
424 // extreme compatibility mode - without sprites but with markers
425 drawMarkers (theWorkspace);
426 }
ca3c13d1 427 #endif
7d3e64ef 428 return;
7fd59977 429 }
430
8e0a2b19 431 const Handle(OpenGl_Context)& aGlContext = theWorkspace->GetGlContext();
432 const bool toHilight = theWorkspace->ToHighlight();
433 const GLenum aDrawMode = !aGlContext->ActiveProgram().IsNull()
434 && aGlContext->ActiveProgram()->HasTessellationStage()
435 ? GL_PATCHES
436 : myDrawMode;
7d3e64ef 437 myVboAttribs->BindAllAttributes (aGlContext);
8625ef7e 438 if (theHasVertColor && toHilight)
2166f0fa 439 {
8625ef7e 440 // disable per-vertex color
441 OpenGl_VertexBuffer::unbindAttribute (aGlContext, Graphic3d_TOA_COLOR);
7d3e64ef 442 }
443 if (!myVboIndices.IsNull())
444 {
445 myVboIndices->Bind (aGlContext);
446 GLubyte* anOffset = myVboIndices->GetDataOffset();
447 if (!myBounds.IsNull())
2166f0fa 448 {
7d3e64ef 449 // draw primitives by vertex count with the indices
450 const size_t aStride = myVboIndices->GetDataType() == GL_UNSIGNED_SHORT ? sizeof(unsigned short) : sizeof(unsigned int);
451 for (Standard_Integer aGroupIter = 0; aGroupIter < myBounds->NbBounds; ++aGroupIter)
2166f0fa 452 {
7d3e64ef 453 const GLint aNbElemsInGroup = myBounds->Bounds[aGroupIter];
8625ef7e 454 if (theFaceColors != NULL) aGlContext->SetColor4fv (theFaceColors[aGroupIter]);
8e0a2b19 455 glDrawElements (aDrawMode, aNbElemsInGroup, myVboIndices->GetDataType(), anOffset);
7d3e64ef 456 anOffset += aStride * aNbElemsInGroup;
762aacae 457 }
bf75be98 458 }
2166f0fa
SK
459 else
460 {
7d3e64ef 461 // draw one (or sequential) primitive by the indices
8e0a2b19 462 glDrawElements (aDrawMode, myVboIndices->GetElemsNb(), myVboIndices->GetDataType(), anOffset);
5e27df78 463 }
7d3e64ef 464 myVboIndices->Unbind (aGlContext);
7fd59977 465 }
7d3e64ef 466 else if (!myBounds.IsNull())
871fa103 467 {
7d3e64ef 468 GLint aFirstElem = 0;
469 for (Standard_Integer aGroupIter = 0; aGroupIter < myBounds->NbBounds; ++aGroupIter)
470 {
471 const GLint aNbElemsInGroup = myBounds->Bounds[aGroupIter];
8625ef7e 472 if (theFaceColors != NULL) aGlContext->SetColor4fv (theFaceColors[aGroupIter]);
8e0a2b19 473 glDrawArrays (aDrawMode, aFirstElem, aNbElemsInGroup);
7d3e64ef 474 aFirstElem += aNbElemsInGroup;
475 }
871fa103 476 }
7d3e64ef 477 else
2166f0fa 478 {
7d3e64ef 479 if (myDrawMode == GL_POINTS)
480 {
481 drawMarkers (theWorkspace);
482 }
483 else
484 {
8e0a2b19 485 glDrawArrays (aDrawMode, 0, myVboAttribs->GetElemsNb());
7d3e64ef 486 }
2166f0fa
SK
487 }
488
7d3e64ef 489 // bind with 0
490 myVboAttribs->UnbindAllAttributes (aGlContext);
7fd59977 491}
492
2166f0fa 493// =======================================================================
7d3e64ef 494// function : drawEdges
2166f0fa
SK
495// purpose :
496// =======================================================================
bf5f0ca2 497void OpenGl_PrimitiveArray::drawEdges (const Handle(OpenGl_Workspace)& theWorkspace) const
7fd59977 498{
65360da3 499 const Handle(OpenGl_Context)& aGlContext = theWorkspace->GetGlContext();
7d3e64ef 500 if (myVboAttribs.IsNull())
501 {
502 return;
503 }
504
bf5f0ca2 505 const OpenGl_Aspects* anAspect = theWorkspace->Aspects();
ca3c13d1 506#if !defined(GL_ES_VERSION_2_0)
2a332745 507 const Standard_Integer aPolyModeOld = aGlContext->SetPolygonMode (GL_LINE);
ca3c13d1 508#endif
7d3e64ef 509
4e1523ef 510 if (aGlContext->core20fwd != NULL)
7d3e64ef 511 {
bf5f0ca2 512 aGlContext->ShaderManager()->BindLineProgram (Handle(OpenGl_TextureSet)(), anAspect->Aspect()->EdgeLineType(),
c40eb6b9 513 Graphic3d_TOSM_UNLIT, Graphic3d_AlphaMode_Opaque, Standard_False,
b6472664 514 anAspect->ShaderProgramRes (aGlContext));
2166f0fa 515 }
bf5f0ca2 516 aGlContext->SetSampleAlphaToCoverage (aGlContext->ShaderManager()->MaterialState().HasAlphaCutoff());
8e0a2b19 517 const GLenum aDrawMode = !aGlContext->ActiveProgram().IsNull()
518 && aGlContext->ActiveProgram()->HasTessellationStage()
519 ? GL_PATCHES
520 : myDrawMode;
dd1ae9df 521#if !defined(GL_ES_VERSION_2_0)
522 if (aGlContext->ActiveProgram().IsNull()
523 && aGlContext->core11 != NULL)
524 {
525 glDisable (GL_LIGHTING);
526 }
527#endif
7fd59977 528
5e27df78 529 /// OCC22236 NOTE: draw edges for all situations:
871fa103 530 /// 1) draw elements with GL_LINE style as edges from myPArray->bufferVBO[VBOEdges] indices array
531 /// 2) draw elements from vertex array, when bounds defines count of primitive's vertices.
5e27df78 532 /// 3) draw primitive's edges by vertexes if no edges and bounds array is specified
7d3e64ef 533 myVboAttribs->BindPositionAttribute (aGlContext);
ac116c22 534
bf5f0ca2 535 aGlContext->SetColor4fv (theWorkspace->EdgeColor().a() >= 0.1f
536 ? theWorkspace->EdgeColor()
537 : theWorkspace->View()->BackgroundColor());
538 aGlContext->SetTypeOfLine (anAspect->Aspect()->EdgeLineType());
539 aGlContext->SetLineWidth (anAspect->Aspect()->EdgeWidth());
ac116c22 540
7d3e64ef 541 if (!myVboIndices.IsNull())
bf75be98 542 {
7d3e64ef 543 myVboIndices->Bind (aGlContext);
544 GLubyte* anOffset = myVboIndices->GetDataOffset();
2166f0fa 545
7d3e64ef 546 // draw primitives by vertex count with the indices
547 if (!myBounds.IsNull())
2166f0fa 548 {
7d3e64ef 549 const size_t aStride = myVboIndices->GetDataType() == GL_UNSIGNED_SHORT ? sizeof(unsigned short) : sizeof(unsigned int);
871fa103 550 for (Standard_Integer aGroupIter = 0; aGroupIter < myBounds->NbBounds; ++aGroupIter)
2166f0fa 551 {
871fa103 552 const GLint aNbElemsInGroup = myBounds->Bounds[aGroupIter];
8e0a2b19 553 glDrawElements (aDrawMode, aNbElemsInGroup, myVboIndices->GetDataType(), anOffset);
7d3e64ef 554 anOffset += aStride * aNbElemsInGroup;
7fd59977 555 }
556 }
7d3e64ef 557 // draw one (or sequential) primitive by the indices
2166f0fa
SK
558 else
559 {
8e0a2b19 560 glDrawElements (aDrawMode, myVboIndices->GetElemsNb(), myVboIndices->GetDataType(), anOffset);
762aacae 561 }
7d3e64ef 562 myVboIndices->Unbind (aGlContext);
2166f0fa 563 }
7d3e64ef 564 else if (!myBounds.IsNull())
2166f0fa 565 {
7d3e64ef 566 GLint aFirstElem = 0;
567 for (Standard_Integer aGroupIter = 0; aGroupIter < myBounds->NbBounds; ++aGroupIter)
2166f0fa 568 {
7d3e64ef 569 const GLint aNbElemsInGroup = myBounds->Bounds[aGroupIter];
8e0a2b19 570 glDrawArrays (aDrawMode, aFirstElem, aNbElemsInGroup);
7d3e64ef 571 aFirstElem += aNbElemsInGroup;
7fd59977 572 }
2166f0fa 573 }
7d3e64ef 574 else
575 {
8e0a2b19 576 glDrawArrays (aDrawMode, 0, !myVboAttribs.IsNull() ? myVboAttribs->GetElemsNb() : myAttribs->NbElements);
7d3e64ef 577 }
578
579 // unbind buffers
580 myVboAttribs->UnbindAttribute (aGlContext, Graphic3d_TOA_POS);
2166f0fa 581
8625ef7e 582 // restore line context
2a332745 583#if !defined(GL_ES_VERSION_2_0)
584 aGlContext->SetPolygonMode (aPolyModeOld);
585#endif
7fd59977 586}
587
2166f0fa 588// =======================================================================
7d3e64ef 589// function : drawMarkers
a577aaab 590// purpose :
591// =======================================================================
7d3e64ef 592void OpenGl_PrimitiveArray::drawMarkers (const Handle(OpenGl_Workspace)& theWorkspace) const
a577aaab 593{
bf5f0ca2 594 const OpenGl_Aspects* anAspectMarker = theWorkspace->Aspects();
737e9a8d 595 const Handle(OpenGl_Context)& aCtx = theWorkspace->GetGlContext();
8e0a2b19 596 const GLenum aDrawMode = !aCtx->ActiveProgram().IsNull()
597 && aCtx->ActiveProgram()->HasTessellationStage()
598 ? GL_PATCHES
599 : myDrawMode;
737e9a8d 600 if (anAspectMarker->HasPointSprite (aCtx))
a577aaab 601 {
602 // Textured markers will be drawn with the point sprites
8625ef7e 603 aCtx->SetPointSize (anAspectMarker->MarkerSize());
fd59283a 604 aCtx->SetPointSpriteOrigin();
ca3c13d1 605 #if !defined(GL_ES_VERSION_2_0)
4e1523ef 606 if (aCtx->core11 != NULL)
607 {
608 aCtx->core11fwd->glEnable (GL_ALPHA_TEST);
609 aCtx->core11fwd->glAlphaFunc (GL_GEQUAL, 0.1f);
610 }
ca3c13d1 611 #endif
a577aaab 612
8625ef7e 613 aCtx->core11fwd->glEnable (GL_BLEND);
614 aCtx->core11fwd->glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
a577aaab 615
8e0a2b19 616 aCtx->core11fwd->glDrawArrays (aDrawMode, 0, !myVboAttribs.IsNull() ? myVboAttribs->GetElemsNb() : myAttribs->NbElements);
a577aaab 617
8625ef7e 618 aCtx->core11fwd->glDisable (GL_BLEND);
ca3c13d1 619 #if !defined(GL_ES_VERSION_2_0)
4e1523ef 620 if (aCtx->core11 != NULL)
621 {
c40eb6b9 622 if (aCtx->ShaderManager()->MaterialState().AlphaCutoff() >= ShortRealLast())
623 {
624 aCtx->core11fwd->glDisable (GL_ALPHA_TEST);
625 }
626 else
627 {
628 aCtx->core11fwd->glAlphaFunc (GL_GEQUAL, aCtx->ShaderManager()->MaterialState().AlphaCutoff());
629 }
4e1523ef 630 }
ca3c13d1 631 #endif
8625ef7e 632 aCtx->SetPointSize (1.0f);
a577aaab 633 return;
634 }
bf5f0ca2 635 else if (anAspectMarker->Aspect()->MarkerType() == Aspect_TOM_POINT)
a577aaab 636 {
8625ef7e 637 aCtx->SetPointSize (anAspectMarker->MarkerSize());
8e0a2b19 638 aCtx->core11fwd->glDrawArrays (aDrawMode, 0, !myVboAttribs.IsNull() ? myVboAttribs->GetElemsNb() : myAttribs->NbElements);
8625ef7e 639 aCtx->SetPointSize (1.0f);
a577aaab 640 }
ca3c13d1 641#if !defined(GL_ES_VERSION_2_0)
8625ef7e 642 // Textured markers will be drawn with the glBitmap
737e9a8d 643 else if (anAspectMarker->Aspect()->MarkerType() != Aspect_TOM_POINT)
a577aaab 644 {
737e9a8d 645 const Handle(OpenGl_PointSprite)& aSpriteNorm = anAspectMarker->SpriteRes (aCtx, false);
646 if (aSpriteNorm.IsNull())
647 {
648 return;
649 }
650
871fa103 651 /**if (!isHilight && (myPArray->vcolours != NULL))
a577aaab 652 {
871fa103 653 for (Standard_Integer anIter = 0; anIter < myAttribs->NbElements; anIter++)
a577aaab 654 {
871fa103 655 glColor4ubv (myPArray->vcolours[anIter].GetData());
656 glRasterPos3fv (myAttribs->Value<Graphic3d_Vec3> (anIter).GetData());
a577aaab 657 aSpriteNorm->DrawBitmap (theWorkspace->GetGlContext());
658 }
659 }
871fa103 660 else*/
a577aaab 661 {
871fa103 662 for (Standard_Integer anIter = 0; anIter < myAttribs->NbElements; anIter++)
a577aaab 663 {
8625ef7e 664 aCtx->core11->glRasterPos3fv (myAttribs->Value<Graphic3d_Vec3> (anIter).GetData());
a577aaab 665 aSpriteNorm->DrawBitmap (theWorkspace->GetGlContext());
666 }
667 }
668 }
ca3c13d1 669#endif
a577aaab 670}
671
672// =======================================================================
2166f0fa
SK
673// function : OpenGl_PrimitiveArray
674// purpose :
675// =======================================================================
e1c659da 676OpenGl_PrimitiveArray::OpenGl_PrimitiveArray (const OpenGl_GraphicDriver* theDriver)
677
678: myDrawMode (DRAW_MODE_NONE),
8e0a2b19 679 myIsFillType(Standard_False),
e1c659da 680 myIsVboInit (Standard_False)
681{
682 if (theDriver != NULL)
683 {
684 myUID = theDriver->GetNextPrimitiveArrayUID();
685 }
686}
687
688// =======================================================================
689// function : OpenGl_PrimitiveArray
690// purpose :
691// =======================================================================
8d3f219f 692OpenGl_PrimitiveArray::OpenGl_PrimitiveArray (const OpenGl_GraphicDriver* theDriver,
693 const Graphic3d_TypeOfPrimitiveArray theType,
871fa103 694 const Handle(Graphic3d_IndexBuffer)& theIndices,
695 const Handle(Graphic3d_Buffer)& theAttribs,
696 const Handle(Graphic3d_BoundBuffer)& theBounds)
8d3f219f 697
871fa103 698: myIndices (theIndices),
699 myAttribs (theAttribs),
700 myBounds (theBounds),
701 myDrawMode (DRAW_MODE_NONE),
8e0a2b19 702 myIsFillType(Standard_False),
c827ea3a 703 myIsVboInit (Standard_False)
2166f0fa 704{
871fa103 705 if (!myIndices.IsNull()
706 && myIndices->NbElements < 1)
707 {
708 // dummy index buffer?
709 myIndices.Nullify();
710 }
871fa103 711
e99a2f7c 712 if (theDriver != NULL)
713 {
714 myUID = theDriver->GetNextPrimitiveArrayUID();
715 #if defined (GL_ES_VERSION_2_0)
716 const Handle(OpenGl_Context)& aCtx = theDriver->GetSharedContext();
717 if (!aCtx.IsNull())
718 {
719 processIndices (aCtx);
720 }
721 #endif
722 }
723
a79f67f8 724 setDrawMode (theType);
2166f0fa
SK
725}
726
727// =======================================================================
728// function : ~OpenGl_PrimitiveArray
729// purpose :
730// =======================================================================
5e27df78 731OpenGl_PrimitiveArray::~OpenGl_PrimitiveArray()
2166f0fa 732{
5e27df78 733 //
734}
2166f0fa 735
5e27df78 736// =======================================================================
737// function : Release
738// purpose :
739// =======================================================================
10b9c7df 740void OpenGl_PrimitiveArray::Release (OpenGl_Context* theContext)
5e27df78 741{
c827ea3a 742 myIsVboInit = Standard_False;
871fa103 743 if (!myVboIndices.IsNull())
2166f0fa 744 {
10b9c7df 745 if (theContext)
5e27df78 746 {
871fa103 747 theContext->DelayedRelease (myVboIndices);
748 }
749 myVboIndices.Nullify();
750 }
751 if (!myVboAttribs.IsNull())
752 {
10b9c7df 753 if (theContext)
871fa103 754 {
755 theContext->DelayedRelease (myVboAttribs);
5e27df78 756 }
871fa103 757 myVboAttribs.Nullify();
2166f0fa
SK
758 }
759}
760
761// =======================================================================
762// function : Render
763// purpose :
764// =======================================================================
765void OpenGl_PrimitiveArray::Render (const Handle(OpenGl_Workspace)& theWorkspace) const
766{
871fa103 767 if (myDrawMode == DRAW_MODE_NONE)
bf75be98 768 {
2166f0fa 769 return;
bf75be98 770 }
2166f0fa 771
bf5f0ca2 772 const OpenGl_Aspects* anAspectFace = theWorkspace->ApplyAspects();
58655684 773 const Handle(OpenGl_Context)& aCtx = theWorkspace->GetGlContext();
2166f0fa 774
737e9a8d 775 const bool toEnableEnvMap = !aCtx->ActiveTextures().IsNull()
776 && aCtx->ActiveTextures() == theWorkspace->EnvironmentTexture();
3a4a3962 777 bool toDrawArray = true;
2a332745 778 int toDrawInteriorEdges = 0; // 0 - no edges, 1 - glsl edges, 2 - polygonMode
6ef0d6f1 779 if (myIsFillType)
3a4a3962 780 {
781 toDrawArray = anAspectFace->Aspect()->InteriorStyle() != Aspect_IS_EMPTY;
2a332745 782 if (anAspectFace->Aspect()->ToDrawEdges())
783 {
784 toDrawInteriorEdges = 1;
785 toDrawArray = true;
786 #if !defined(GL_ES_VERSION_2_0)
787 if (anAspectFace->Aspect()->EdgeLineType() != Aspect_TOL_SOLID
788 || aCtx->hasGeometryStage == OpenGl_FeatureNotAvailable
789 || aCtx->caps->usePolygonMode)
790 {
791 toDrawInteriorEdges = 2;
792 if (anAspectFace->Aspect()->InteriorStyle() == Aspect_IS_EMPTY)
793 {
794 if (anAspectFace->Aspect()->EdgeLineType() != Aspect_TOL_SOLID)
795 {
796 toDrawArray = false;
797 }
798 else
799 {
800 aCtx->SetPolygonMode (GL_LINE);
801 }
802 }
803 }
804 #endif
805 }
3a4a3962 806 }
6ef0d6f1 807 else
8625ef7e 808 {
3a4a3962 809 if (myDrawMode == GL_POINTS)
810 {
bf5f0ca2 811 if (anAspectFace->Aspect()->MarkerType() == Aspect_TOM_EMPTY)
6ef0d6f1 812 {
813 return;
814 }
3a4a3962 815 }
816 else
817 {
bf5f0ca2 818 if (anAspectFace->Aspect()->LineType() == Aspect_TOL_EMPTY)
6ef0d6f1 819 {
820 return;
821 }
822 }
6ef0d6f1 823 }
824
825 // create VBOs on first render call
826 if (!myIsVboInit)
827 {
828 // compatibility - keep data to draw markers using display lists
737e9a8d 829 Standard_Boolean toKeepData = myDrawMode == GL_POINTS
830 && anAspectFace->IsDisplayListSprite (aCtx);
6ef0d6f1 831 #if defined (GL_ES_VERSION_2_0)
832 processIndices (aCtx);
833 #endif
834 buildVBO (aCtx, toKeepData);
835 myIsVboInit = Standard_True;
836 }
837 else if ((!myAttribs.IsNull()
838 && myAttribs->IsMutable())
839 || (!myIndices.IsNull()
840 && myIndices->IsMutable()))
841 {
842 updateVBO (aCtx);
8625ef7e 843 }
7d3e64ef 844
db5d29de 845 Graphic3d_TypeOfShadingModel aShadingModel = Graphic3d_TOSM_UNLIT;
3a4a3962 846 if (toDrawArray)
7d3e64ef 847 {
db5d29de 848 const bool hasColorAttrib = !myVboAttribs.IsNull()
849 && myVboAttribs->HasColorAttribute();
850 const bool toHilight = theWorkspace->ToHighlight();
851 const bool hasVertColor = hasColorAttrib && !toHilight;
852 const bool hasVertNorm = !myVboAttribs.IsNull() && myVboAttribs->HasNormalAttribute();
8613985b 853 switch (myDrawMode)
8625ef7e 854 {
8613985b 855 case GL_POINTS:
8625ef7e 856 {
db5d29de 857 aShadingModel = aCtx->ShaderManager()->ChooseMarkerShadingModel (anAspectFace->ShadingModel(), hasVertNorm);
737e9a8d 858 aCtx->ShaderManager()->BindMarkerProgram (aCtx->ActiveTextures(),
859 aShadingModel, Graphic3d_AlphaMode_Opaque,
860 hasVertColor, anAspectFace->ShaderProgramRes (aCtx));
8613985b 861 break;
862 }
863 case GL_LINES:
864 case GL_LINE_STRIP:
865 {
db5d29de 866 aShadingModel = aCtx->ShaderManager()->ChooseLineShadingModel (anAspectFace->ShadingModel(), hasVertNorm);
737e9a8d 867 aCtx->ShaderManager()->BindLineProgram (Handle(OpenGl_TextureSet)(),
bf5f0ca2 868 anAspectFace->Aspect()->LineType(),
dc89236f 869 aShadingModel,
c40eb6b9 870 Graphic3d_AlphaMode_Opaque,
8613985b 871 hasVertColor,
bf5f0ca2 872 anAspectFace->ShaderProgramRes (aCtx));
8613985b 873 break;
874 }
875 default:
876 {
db5d29de 877 aShadingModel = aCtx->ShaderManager()->ChooseFaceShadingModel (anAspectFace->ShadingModel(), hasVertNorm);
737e9a8d 878 aCtx->ShaderManager()->BindFaceProgram (aCtx->ActiveTextures(),
dc89236f 879 aShadingModel,
2a332745 880 aCtx->ShaderManager()->MaterialState().HasAlphaCutoff() ? Graphic3d_AlphaMode_Mask : Graphic3d_AlphaMode_Opaque,
881 toDrawInteriorEdges == 1 ? anAspectFace->Aspect()->InteriorStyle() : Aspect_IS_SOLID,
8613985b 882 hasVertColor,
883 toEnableEnvMap,
2a332745 884 toDrawInteriorEdges == 1,
8613985b 885 anAspectFace->ShaderProgramRes (aCtx));
2a332745 886 if (toDrawInteriorEdges == 1)
887 {
888 aCtx->ShaderManager()->PushInteriorState (aCtx->ActiveProgram(), anAspectFace->Aspect());
889 }
8613985b 890 break;
8625ef7e 891 }
892 }
893
8613985b 894 #if !defined(GL_ES_VERSION_2_0)
895 // manage FFP lighting
896 if (aCtx->ActiveProgram().IsNull()
897 && aCtx->core11 != NULL)
299e0ab9 898 {
dc89236f 899 if (aShadingModel == Graphic3d_TOSM_UNLIT)
8613985b 900 {
901 glDisable (GL_LIGHTING);
902 }
903 else
904 {
905 glEnable (GL_LIGHTING);
906 }
299e0ab9 907 }
8613985b 908 #endif
299e0ab9 909
cc8cbabe 910 if (!aCtx->ActiveTextures().IsNull()
911 && !aCtx->ActiveTextures()->IsEmpty()
912 && !aCtx->ActiveTextures()->First().IsNull()
79f4f036 913 && myDrawMode != GL_POINTS) // transformation is not supported within point sprites
914 {
cc8cbabe 915 aCtx->SetTextureMatrix (aCtx->ActiveTextures()->First()->Sampler()->Parameters());
79f4f036 916 }
bf5f0ca2 917 aCtx->SetSampleAlphaToCoverage (aCtx->ShaderManager()->MaterialState().HasAlphaCutoff());
79f4f036 918
6ef0d6f1 919 const Graphic3d_Vec4* aFaceColors = !myBounds.IsNull() && !toHilight && anAspectFace->Aspect()->InteriorStyle() != Aspect_IS_HIDDENLINE
920 ? myBounds->Colors
921 : NULL;
bf5f0ca2 922 const OpenGl_Vec4& anInteriorColor = theWorkspace->InteriorColor();
923 aCtx->SetColor4fv (anInteriorColor);
6ef0d6f1 924 if (!myIsFillType)
f9ba5c4d 925 {
6ef0d6f1 926 if (myDrawMode == GL_LINES
927 || myDrawMode == GL_LINE_STRIP)
928 {
bf5f0ca2 929 aCtx->SetTypeOfLine (anAspectFace->Aspect()->LineType());
930 aCtx->SetLineWidth (anAspectFace->Aspect()->LineWidth());
6ef0d6f1 931 }
932
933 drawArray (theWorkspace, aFaceColors, hasColorAttrib);
6ef0d6f1 934 return;
ac116c22 935 }
7d3e64ef 936
8625ef7e 937 drawArray (theWorkspace, aFaceColors, hasColorAttrib);
7d3e64ef 938
6ef0d6f1 939 // draw outline - only closed triangulation with defined vertex normals can be drawn in this way
940 if (anAspectFace->Aspect()->ToDrawSilhouette()
941 && aCtx->ToCullBackFaces()
942 && aCtx->ShaderManager()->BindOutlineProgram())
943 {
944 const Graphic3d_Vec2i aViewSize (aCtx->Viewport()[2], aCtx->Viewport()[3]);
945 const Standard_Integer aMin = aViewSize.minComp();
946 const GLfloat anEdgeWidth = (GLfloat )anAspectFace->Aspect()->EdgeWidth() * aCtx->LineWidthScale() / (GLfloat )aMin;
947 const GLfloat anOrthoScale = theWorkspace->View()->Camera()->IsOrthographic() ? (GLfloat )theWorkspace->View()->Camera()->Scale() : -1.0f;
948
949 const Handle(OpenGl_ShaderProgram)& anOutlineProgram = aCtx->ActiveProgram();
950 anOutlineProgram->SetUniform (aCtx, anOutlineProgram->GetStateLocation (OpenGl_OCCT_SILHOUETTE_THICKNESS), anEdgeWidth);
951 anOutlineProgram->SetUniform (aCtx, anOutlineProgram->GetStateLocation (OpenGl_OCCT_ORTHO_SCALE), anOrthoScale);
952 aCtx->SetColor4fv (anAspectFace->Aspect()->EdgeColorRGBA());
953
954 aCtx->core11fwd->glCullFace (GL_FRONT);
955 drawArray (theWorkspace, NULL, false);
956
957 aCtx->core11fwd->glCullFace (GL_BACK);
958 }
8625ef7e 959 }
6ef0d6f1 960
2a332745 961#if !defined(GL_ES_VERSION_2_0)
6ef0d6f1 962 // draw triangulation edges using Polygon Mode
963 if (toDrawInteriorEdges == 2)
7d3e64ef 964 {
2a332745 965 if (anAspectFace->Aspect()->InteriorStyle() == Aspect_IS_HOLLOW
966 && anAspectFace->Aspect()->EdgeLineType() == Aspect_TOL_SOLID)
967 {
968 aCtx->SetPolygonMode (GL_FILL);
969 }
970 else
30f0ad28 971 {
bf5f0ca2 972 drawEdges (theWorkspace);
30f0ad28 973 }
974 }
2a332745 975#endif
2166f0fa 976}
a79f67f8 977
978// =======================================================================
979// function : setDrawMode
980// purpose :
981// =======================================================================
982void OpenGl_PrimitiveArray::setDrawMode (const Graphic3d_TypeOfPrimitiveArray theType)
983{
984 if (myAttribs.IsNull())
985 {
986 myDrawMode = DRAW_MODE_NONE;
8e0a2b19 987 myIsFillType = false;
a79f67f8 988 return;
989 }
990
991 switch (theType)
992 {
993 case Graphic3d_TOPA_POINTS:
8e0a2b19 994 myDrawMode = GL_POINTS;
995 myIsFillType = false;
a79f67f8 996 break;
997 case Graphic3d_TOPA_SEGMENTS:
8e0a2b19 998 myDrawMode = GL_LINES;
999 myIsFillType = false;
1000 break;
1001 case Graphic3d_TOPA_POLYLINES:
1002 myDrawMode = GL_LINE_STRIP;
1003 myIsFillType = false;
a79f67f8 1004 break;
1005 case Graphic3d_TOPA_TRIANGLES:
8e0a2b19 1006 myDrawMode = GL_TRIANGLES;
1007 myIsFillType = true;
a79f67f8 1008 break;
1009 case Graphic3d_TOPA_TRIANGLESTRIPS:
8e0a2b19 1010 myDrawMode = GL_TRIANGLE_STRIP;
1011 myIsFillType = true;
a79f67f8 1012 break;
1013 case Graphic3d_TOPA_TRIANGLEFANS:
8e0a2b19 1014 myDrawMode = GL_TRIANGLE_FAN;
1015 myIsFillType = true;
a79f67f8 1016 break;
8e0a2b19 1017 //
1018 case Graphic3d_TOPA_LINES_ADJACENCY:
1019 myDrawMode = GL_LINES_ADJACENCY;
1020 myIsFillType = false;
a79f67f8 1021 break;
8e0a2b19 1022 case Graphic3d_TOPA_LINE_STRIP_ADJACENCY:
1023 myDrawMode = GL_LINE_STRIP_ADJACENCY;
1024 myIsFillType = false;
1025 break;
1026 case Graphic3d_TOPA_TRIANGLES_ADJACENCY:
1027 myDrawMode = GL_TRIANGLES_ADJACENCY;
1028 myIsFillType = true;
1029 break;
1030 case Graphic3d_TOPA_TRIANGLE_STRIP_ADJACENCY:
1031 myDrawMode = GL_TRIANGLE_STRIP_ADJACENCY;
1032 myIsFillType = true;
1033 break;
1034 //
1035 #if !defined(GL_ES_VERSION_2_0)
a79f67f8 1036 case Graphic3d_TOPA_QUADRANGLES:
8e0a2b19 1037 myDrawMode = GL_QUADS;
1038 myIsFillType = true;
a79f67f8 1039 break;
1040 case Graphic3d_TOPA_QUADRANGLESTRIPS:
8e0a2b19 1041 myDrawMode = GL_QUAD_STRIP;
1042 myIsFillType = true;
a79f67f8 1043 break;
a79f67f8 1044 case Graphic3d_TOPA_POLYGONS:
8e0a2b19 1045 myDrawMode = GL_POLYGON;
1046 myIsFillType = true;
1047 break;
1048 #else
a79f67f8 1049 case Graphic3d_TOPA_QUADRANGLES:
1050 case Graphic3d_TOPA_QUADRANGLESTRIPS:
8e0a2b19 1051 case Graphic3d_TOPA_POLYGONS:
a79f67f8 1052 #endif
1053 case Graphic3d_TOPA_UNDEFINED:
8e0a2b19 1054 myDrawMode = DRAW_MODE_NONE;
1055 myIsFillType = false;
a79f67f8 1056 break;
1057 }
1058}
1059
1060// =======================================================================
e99a2f7c 1061// function : processIndices
1062// purpose :
1063// =======================================================================
1064Standard_Boolean OpenGl_PrimitiveArray::processIndices (const Handle(OpenGl_Context)& theContext) const
1065{
1066 if (myIndices.IsNull()
09f30297 1067 || myAttribs.IsNull()
e99a2f7c 1068 || theContext->hasUintIndex)
1069 {
1070 return Standard_True;
1071 }
1072
09f30297 1073 if (myAttribs->NbElements > std::numeric_limits<GLushort>::max())
e99a2f7c 1074 {
1075 Handle(Graphic3d_Buffer) anAttribs = new Graphic3d_Buffer (new NCollection_AlignedAllocator (16));
1076 if (!anAttribs->Init (myIndices->NbElements, myAttribs->AttributesArray(), myAttribs->NbAttributes))
1077 {
1078 return Standard_False; // failed to initialize attribute array
1079 }
1080
1081 for (Standard_Integer anIdxIdx = 0; anIdxIdx < myIndices->NbElements; ++anIdxIdx)
1082 {
1083 const Standard_Integer anIndex = myIndices->Index (anIdxIdx);
1084 memcpy (anAttribs->ChangeData() + myAttribs->Stride * anIdxIdx,
1085 myAttribs->Data() + myAttribs->Stride * anIndex,
1086 myAttribs->Stride);
1087 }
1088
1089 myIndices.Nullify();
1090 myAttribs = anAttribs;
1091 }
1092
1093 return Standard_True;
1094}
1095
1096// =======================================================================
a79f67f8 1097// function : InitBuffers
1098// purpose :
1099// =======================================================================
1100void OpenGl_PrimitiveArray::InitBuffers (const Handle(OpenGl_Context)& theContext,
1101 const Graphic3d_TypeOfPrimitiveArray theType,
1102 const Handle(Graphic3d_IndexBuffer)& theIndices,
1103 const Handle(Graphic3d_Buffer)& theAttribs,
1104 const Handle(Graphic3d_BoundBuffer)& theBounds)
1105{
1106 // Release old graphic resources
ad67e367 1107 Release (theContext.get());
a79f67f8 1108
1109 myIndices = theIndices;
1110 myAttribs = theAttribs;
1111 myBounds = theBounds;
e99a2f7c 1112#if defined(GL_ES_VERSION_2_0)
1113 processIndices (theContext);
1114#endif
a79f67f8 1115
1116 setDrawMode (theType);
1117}