qglbuffer.cpp

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4 ** Contact: http://www.qt.io/licensing/ -

5 ** -

6 ** This file is part of the QtOpenGL module of the Qt Toolkit. -

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8 ** $QT_BEGIN_LICENSE:LGPL21$ -

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18 ** Alternatively, this file may be used under the terms of the GNU Lesser -

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26 ** As a special exception, The Qt Company gives you certain additional -

27 ** rights. These rights are described in The Qt Company LGPL Exception -

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30 ** $QT_END_LICENSE$ -

31 ** -

32 ****************************************************************************/ -

33 -

34 #include <QtOpenGL/qgl.h> -

35 #include <QtOpenGL/private/qgl_p.h> -

36 #include <private/qopenglextensions_p.h> -

37 #include <QtCore/qatomic.h> -

38 #include "qglbuffer.h" -

39 -

40 QT_BEGIN_NAMESPACE -

41 -

42 /*! -

43 \class QGLBuffer -

44 \inmodule QtOpenGL -

45 \brief The QGLBuffer class provides functions for creating and managing GL buffer objects. -

46 \since 4.7 -

47 \obsolete -

48 \ingroup painting-3D -

49 -

50 Buffer objects are created in the GL server so that the -

51 client application can avoid uploading vertices, indices, -

52 texture image data, etc every time they are needed. -

53 -

54 QGLBuffer objects can be copied around as a reference to the -

55 underlying GL buffer object: -

56 -

57 \code -

58 QGLBuffer buffer1(QGLBuffer::IndexBuffer); -

59 buffer1.create(); -

60 -

61 QGLBuffer buffer2 = buffer1; -

62 \endcode -

63 -

64 QGLBuffer performs a shallow copy when objects are copied in this -

65 manner, but does not implement copy-on-write semantics. The original -

66 object will be affected whenever the copy is modified. -

67 -

68 \note This class has been deprecated in favor of QOpenGLBuffer. -

69 */ -

70 -

71 /*! -

72 \enum QGLBuffer::Type -

73 This enum defines the type of GL buffer object to create with QGLBuffer. -

74 -

75 \value VertexBuffer Vertex buffer object for use when specifying -

76 vertex arrays. -

77 \value IndexBuffer Index buffer object for use with \c{glDrawElements()}. -

78 \value PixelPackBuffer Pixel pack buffer object for reading pixel -

79 data from the GL server (for example, with \c{glReadPixels()}). -

80 Not supported under OpenGL/ES. -

81 \value PixelUnpackBuffer Pixel unpack buffer object for writing pixel -

82 data to the GL server (for example, with \c{glTexImage2D()}). -

83 Not supported under OpenGL/ES. -

84 */ -

85 -

86 /*! -

87 \enum QGLBuffer::UsagePattern -

88 This enum defines the usage pattern of a QGLBuffer object. -

89 -

90 \value StreamDraw The data will be set once and used a few times -

91 for drawing operations. Under OpenGL/ES 1.1 this is identical -

92 to StaticDraw. -

93 \value StreamRead The data will be set once and used a few times -

94 for reading data back from the GL server. Not supported -

95 under OpenGL/ES. -

96 \value StreamCopy The data will be set once and used a few times -

97 for reading data back from the GL server for use in further -

98 drawing operations. Not supported under OpenGL/ES. -

99 \value StaticDraw The data will be set once and used many times -

100 for drawing operations. -

101 \value StaticRead The data will be set once and used many times -

102 for reading data back from the GL server. Not supported -

103 under OpenGL/ES. -

104 \value StaticCopy The data will be set once and used many times -

105 for reading data back from the GL server for use in further -

106 drawing operations. Not supported under OpenGL/ES. -

107 \value DynamicDraw The data will be modified repeatedly and used -

108 many times for drawing operations. -

109 \value DynamicRead The data will be modified repeatedly and used -

110 many times for reading data back from the GL server. -

111 Not supported under OpenGL/ES. -

112 \value DynamicCopy The data will be modified repeatedly and used -

113 many times for reading data back from the GL server for -

114 use in further drawing operations. Not supported under OpenGL/ES. -

115 */ -

116 -

117 /*! -

118 \enum QGLBuffer::Access -

119 This enum defines the access mode for QGLBuffer::map(). -

120 -

121 \value ReadOnly The buffer will be mapped for reading only. -

122 \value WriteOnly The buffer will be mapped for writing only. -

123 \value ReadWrite The buffer will be mapped for reading and writing. -

124 */ -

125 -

126 class QGLBufferPrivate -

127 { -

128 public: -

129 QGLBufferPrivate(QGLBuffer::Type t) -

130 : ref(1), -

131 type(t), -

132 guard(0), -

133 usagePattern(QGLBuffer::StaticDraw), -

134 actualUsagePattern(QGLBuffer::StaticDraw), -

135 funcs(0) -

136 { -

137

}

executed 7 times by 1 test: end of block

Executed by:

tst_qglbuffer - unknown status

138 -

139 QAtomicInt ref; -

140 QGLBuffer::Type type; -

141 QGLSharedResourceGuardBase *guard; -

142 QGLBuffer::UsagePattern usagePattern; -

143 QGLBuffer::UsagePattern actualUsagePattern; -

144 QOpenGLExtensions *funcs; -

145 }; -

146 -

147 /*! -

148 Constructs a new buffer object of type QGLBuffer::VertexBuffer. -

149 -

150 Note: this constructor just creates the QGLBuffer instance. The actual -

151 buffer object in the GL server is not created until create() is called. -

152 -

153 \sa create() -

154 */ -

155 QGLBuffer::QGLBuffer() -

156 : d_ptr(new QGLBufferPrivate(QGLBuffer::VertexBuffer)) -

157 { -

158

}

never executed: end of block

159 -

160 /*! -

161 Constructs a new buffer object of \a type. -

162 -

163 Note: this constructor just creates the QGLBuffer instance. The actual -

164 buffer object in the GL server is not created until create() is called. -

165 -

166 \sa create() -

167 */ -

168 QGLBuffer::QGLBuffer(QGLBuffer::Type type) -

169 : d_ptr(new QGLBufferPrivate(type)) -

170 { -

171

}

executed 7 times by 1 test: end of block

Executed by:

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172 -

173 /*! -

174 Constructs a shallow copy of \a other. -

175 -

176 Note: QGLBuffer does not implement copy-on-write semantics, -

177 so \a other will be affected whenever the copy is modified. -

178 */ -

179 QGLBuffer::QGLBuffer(const QGLBuffer &other) -

180 : d_ptr(other.d_ptr) -

181 { -

182 d_ptr->ref.ref(); -

183

}

never executed: end of block

184 -

185 #define ctx QGLContext::currentContext(); -

186 -

187 /*! -

188 Destroys this buffer object, including the storage being -

189 used in the GL server. -

190 */ -

191 QGLBuffer::~QGLBuffer() -

192 { -

193

if (!d_ptr->ref.deref()) {

!d_ptr->ref.deref()	Description
TRUE	evaluated 7 times by 1 test Evaluated by: tst_qglbuffer - unknown status
FALSE	never evaluated

0-7

194 destroy(); -

195 delete d_ptr; -

196

}

executed 7 times by 1 test: end of block

Executed by:

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197

}

executed 7 times by 1 test: end of block

Executed by:

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198 -

199 /*! -

200 Assigns a shallow copy of \a other to this object. -

201 -

202 Note: QGLBuffer does not implement copy-on-write semantics, -

203 so \a other will be affected whenever the copy is modified. -

204 */ -

205 QGLBuffer &QGLBuffer::operator=(const QGLBuffer &other) -

206 { -

207

if (d_ptr != other.d_ptr) {

d_ptr != other.d_ptr	Description
TRUE	never evaluated
FALSE	never evaluated

208 other.d_ptr->ref.ref(); -

209

if (!d_ptr->ref.deref()) {

!d_ptr->ref.deref()	Description
TRUE	never evaluated
FALSE	never evaluated

210 destroy(); -

211 delete d_ptr; -

212

}

never executed: end of block

213 d_ptr = other.d_ptr; -

214

}

never executed: end of block

215

return *this;

never executed: return *this;

216 } -

217 -

218 /*! -

219 Returns the type of buffer represented by this object. -

220 */ -

221 QGLBuffer::Type QGLBuffer::type() const -

222 { -

223 Q_D(const QGLBuffer); -

224

return d->type;

executed 6 times by 1 test: return d->type;

Executed by:

tst_qglbuffer - unknown status

225 } -

226 -

227 /*! -

228 Returns the usage pattern for this buffer object. -

229 The default value is StaticDraw. -

230 -

231 \sa setUsagePattern() -

232 */ -

233 QGLBuffer::UsagePattern QGLBuffer::usagePattern() const -

234 { -

235 Q_D(const QGLBuffer); -

236

return d->usagePattern;

executed 12 times by 1 test: return d->usagePattern;

Executed by:

tst_qglbuffer - unknown status

237 } -

238 -

239 /*! -

240 Sets the usage pattern for this buffer object to \a value. -

241 This function must be called before allocate() or write(). -

242 -

243 \sa usagePattern(), allocate(), write() -

244 */ -

245 void QGLBuffer::setUsagePattern(QGLBuffer::UsagePattern value) -

246 { -

247 Q_D(QGLBuffer); -

248 d->usagePattern = d->actualUsagePattern = value; -

249

}

executed 6 times by 1 test: end of block

Executed by:

tst_qglbuffer - unknown status

250 -

251 #undef ctx -

252 -

253 namespace { -

254 void freeBufferFunc(QGLContext *ctx, GLuint id) -

255 { -

256 Q_ASSERT(ctx); -

257 ctx->contextHandle()->functions()->glDeleteBuffers(1, &id); -

258

}

executed 6 times by 1 test: end of block

Executed by:

tst_qglbuffer - unknown status

259 } -

260 -

261 /*! -

262 Creates the buffer object in the GL server. Returns \c true if -

263 the object was created; false otherwise. -

264 -

265 This function must be called with a current QGLContext. -

266 The buffer will be bound to and can only be used in -

267 that context (or any other context that is shared with it). -

268 -

269 This function will return false if the GL implementation -

270 does not support buffers, or there is no current QGLContext. -

271 -

272 \sa isCreated(), allocate(), write(), destroy() -

273 */ -

274 bool QGLBuffer::create() -

275 { -

276 Q_D(QGLBuffer); -

277

if (d->guard && d->guard->id())

d->guard	Description
TRUE	never evaluated
FALSE	evaluated 7 times by 1 test Evaluated by: tst_qglbuffer - unknown status

d->guard->id()	Description
TRUE	never evaluated
FALSE	never evaluated

0-7

278

return true;

never executed: return true;

279 QGLContext *ctx = const_cast<QGLContext *>(QGLContext::currentContext()); -

280

if (ctx) {

ctx	Description
TRUE	evaluated 7 times by 1 test Evaluated by: tst_qglbuffer - unknown status
FALSE	never evaluated

0-7

281 delete d->funcs; -

282 d->funcs = new QOpenGLExtensions(ctx->contextHandle()); -

283

if (!d->funcs->hasOpenGLFeature(QOpenGLFunctions::Buffers))

!d->funcs->has...ions::Buffers)	Description
TRUE	never evaluated
FALSE	evaluated 7 times by 1 test Evaluated by: tst_qglbuffer - unknown status

0-7

284

return false;

never executed: return false;

285 -

286 GLuint bufferId = 0; -

287 d->funcs->glGenBuffers(1, &bufferId); -

288

if (bufferId) {

bufferId	Description
TRUE	evaluated 7 times by 1 test Evaluated by: tst_qglbuffer - unknown status
FALSE	never evaluated

0-7

289

if (d->guard)

d->guard	Description
TRUE	never evaluated
FALSE	evaluated 7 times by 1 test Evaluated by: tst_qglbuffer - unknown status

0-7

290

d->guard->free();

never executed: d->guard->free();

291 -

292 d->guard = createSharedResourceGuard(ctx, bufferId, freeBufferFunc); -

293

return true;

executed 7 times by 1 test: return true;

Executed by:

tst_qglbuffer - unknown status

294 } -

295

}

never executed: end of block

296

return false;

never executed: return false;

297 } -

298 -

299 #define ctx QGLContext::currentContext() -

300 -

301 /*! -

302 Returns \c true if this buffer has been created; false otherwise. -

303 -

304 \sa create(), destroy() -

305 */ -

306 bool QGLBuffer::isCreated() const -

307 { -

308 Q_D(const QGLBuffer); -

309

return d->guard && d->guard->id();

executed 106 times by 1 test: return d->guard && d->guard->id();

Executed by:

tst_qglbuffer - unknown status

d->guard	Description
TRUE	evaluated 94 times by 1 test Evaluated by: tst_qglbuffer - unknown status
FALSE	evaluated 12 times by 1 test Evaluated by: tst_qglbuffer - unknown status

d->guard->id()	Description
TRUE	evaluated 93 times by 1 test Evaluated by: tst_qglbuffer - unknown status
FALSE	evaluated 1 time by 1 test Evaluated by: tst_qglbuffer - unknown status

1-106

310 } -

311 -

312 /*! -

313 Destroys this buffer object, including the storage being -

314 used in the GL server. All references to the buffer will -

315 become invalid. -

316 */ -

317 void QGLBuffer::destroy() -

318 { -

319 Q_D(QGLBuffer); -

320

if (d->guard) {

d->guard	Description
TRUE	evaluated 7 times by 1 test Evaluated by: tst_qglbuffer - unknown status
FALSE	never evaluated

0-7

321 d->guard->free(); -

322 d->guard = 0; -

323

}

executed 7 times by 1 test: end of block

Executed by:

tst_qglbuffer - unknown status

324

}

executed 7 times by 1 test: end of block

Executed by:

tst_qglbuffer - unknown status

325 -

326 /*! -

327 Reads the \a count bytes in this buffer starting at \a offset -

328 into \a data. Returns \c true on success; false if reading from -

329 the buffer is not supported. Buffer reading is not supported -

330 under OpenGL/ES. -

331 -

332 It is assumed that this buffer has been bound to the current context. -

333 -

334 \sa write(), bind() -

335 */ -

336 bool QGLBuffer::read(int offset, void *data, int count) -

337 { -

338 #if !defined(QT_OPENGL_ES) -

339 Q_D(QGLBuffer); -

340

if (!d->funcs->hasOpenGLFeature(QOpenGLFunctions::Buffers) || !d->guard->id())

!d->funcs->has...ions::Buffers)	Description
TRUE	never evaluated
FALSE	evaluated 13 times by 1 test Evaluated by: tst_qglbuffer - unknown status

!d->guard->id()	Description
TRUE	never evaluated
FALSE	evaluated 13 times by 1 test Evaluated by: tst_qglbuffer - unknown status

0-13

341

return false;

never executed: return false;

342

while (d->funcs->glGetError() != GL_NO_ERROR) ; // Clear error state.

never executed: ;

d->funcs->glGetError() != 0	Description
TRUE	never evaluated
FALSE	evaluated 13 times by 1 test Evaluated by: tst_qglbuffer - unknown status

0-13

343 d->funcs->glGetBufferSubData(d->type, offset, count, data); -

344

return d->funcs->glGetError() == GL_NO_ERROR;

executed 13 times by 1 test: return d->funcs->glGetError() == 0;

Executed by:

tst_qglbuffer - unknown status

345 #else -

346 Q_UNUSED(offset); -

347 Q_UNUSED(data); -

348 Q_UNUSED(count); -

349 return false; -

350 #endif -

351 } -

352 -

353 /*! -

354 Replaces the \a count bytes of this buffer starting at \a offset -

355 with the contents of \a data. Any other bytes in the buffer -

356 will be left unmodified. -

357 -

358 It is assumed that create() has been called on this buffer and that -

359 it has been bound to the current context. -

360 -

361 \sa create(), read(), allocate() -

362 */ -

363 void QGLBuffer::write(int offset, const void *data, int count) -

364 { -

365 #ifndef QT_NO_DEBUG -

366

if (!isCreated())

!isCreated()	Description
TRUE	never evaluated
FALSE	evaluated 6 times by 1 test Evaluated by: tst_qglbuffer - unknown status

0-6

367

qWarning("QGLBuffer::allocate(): buffer not created");

never executed: QMessageLogger(__FILE__, 367, __PRETTY_FUNCTION__).warning("QGLBuffer::allocate(): buffer not created");

368 #endif -

369 Q_D(QGLBuffer); -

370

if (d->guard && d->guard->id())

d->guard	Description
TRUE	evaluated 6 times by 1 test Evaluated by: tst_qglbuffer - unknown status
FALSE	never evaluated

d->guard->id()	Description
TRUE	evaluated 6 times by 1 test Evaluated by: tst_qglbuffer - unknown status
FALSE	never evaluated

0-6

371

d->funcs->glBufferSubData(d->type, offset, count, data);

executed 6 times by 1 test: d->funcs->glBufferSubData(d->type, offset, count, data);

Executed by:

tst_qglbuffer - unknown status

372

}

executed 6 times by 1 test: end of block

Executed by:

tst_qglbuffer - unknown status

373 -

374 /*! -

375 Allocates \a count bytes of space to the buffer, initialized to -

376 the contents of \a data. Any previous contents will be removed. -

377 -

378 It is assumed that create() has been called on this buffer and that -

379 it has been bound to the current context. -

380 -

381 \sa create(), read(), write() -

382 */ -

383 void QGLBuffer::allocate(const void *data, int count) -

384 { -

385 #ifndef QT_NO_DEBUG -

386

if (!isCreated())

!isCreated()	Description
TRUE	never evaluated
FALSE	evaluated 19 times by 1 test Evaluated by: tst_qglbuffer - unknown status

0-19

387

qWarning("QGLBuffer::allocate(): buffer not created");

never executed: QMessageLogger(__FILE__, 387, __PRETTY_FUNCTION__).warning("QGLBuffer::allocate(): buffer not created");

388 #endif -

389 Q_D(QGLBuffer); -

390

if (d->guard && d->guard->id())

d->guard	Description
TRUE	evaluated 19 times by 1 test Evaluated by: tst_qglbuffer - unknown status
FALSE	never evaluated

d->guard->id()	Description
TRUE	evaluated 19 times by 1 test Evaluated by: tst_qglbuffer - unknown status
FALSE	never evaluated

0-19

391

d->funcs->glBufferData(d->type, count, data, d->actualUsagePattern);

executed 19 times by 1 test: d->funcs->glBufferData(d->type, count, data, d->actualUsagePattern);

Executed by:

tst_qglbuffer - unknown status

392

}

executed 19 times by 1 test: end of block

Executed by:

tst_qglbuffer - unknown status

393 -

394 /*! -

395 \fn void QGLBuffer::allocate(int count) -

396 \overload -

397 -

398 Allocates \a count bytes of space to the buffer. Any previous -

399 contents will be removed. -

400 -

401 It is assumed that create() has been called on this buffer and that -

402 it has been bound to the current context. -

403 -

404 \sa create(), write() -

405 */ -

406 -

407 /*! -

408 Binds the buffer associated with this object to the current -

409 GL context. Returns \c false if binding was not possible, usually because -

410 type() is not supported on this GL implementation. -

411 -

412 The buffer must be bound to the same QGLContext current when create() -

413 was called, or to another QGLContext that is sharing with it. -

414 Otherwise, false will be returned from this function. -

415 -

416 \sa release(), create() -

417 */ -

418 bool QGLBuffer::bind() -

419 { -

420 #ifndef QT_NO_DEBUG -

421

if (!isCreated())

!isCreated()	Description
TRUE	evaluated 6 times by 1 test Evaluated by: tst_qglbuffer - unknown status
FALSE	evaluated 9 times by 1 test Evaluated by: tst_qglbuffer - unknown status

6-9

422

qWarning("QGLBuffer::bind(): buffer not created");

executed 6 times by 1 test: QMessageLogger(__FILE__, 422, __PRETTY_FUNCTION__).warning("QGLBuffer::bind(): buffer not created");

Executed by:

tst_qglbuffer - unknown status

423 #endif -

424 Q_D(const QGLBuffer); -

425

GLuint bufferId = d->guard ? d->guard->id() : 0;

d->guard	Description
TRUE	evaluated 9 times by 1 test Evaluated by: tst_qglbuffer - unknown status
FALSE	evaluated 6 times by 1 test Evaluated by: tst_qglbuffer - unknown status

6-9

426

if (bufferId) {

bufferId	Description
TRUE	evaluated 9 times by 1 test Evaluated by: tst_qglbuffer - unknown status
FALSE	evaluated 6 times by 1 test Evaluated by: tst_qglbuffer - unknown status

6-9

427

if (d->guard->group() != QOpenGLContextGroup::currentContextGroup()) {

d->guard->grou...ContextGroup()	Description
TRUE	never evaluated
FALSE	evaluated 9 times by 1 test Evaluated by: tst_qglbuffer - unknown status

0-9

428 #ifndef QT_NO_DEBUG -

429 qWarning("QGLBuffer::bind: buffer is not valid in the current context"); -

430 #endif -

431

return false;

never executed: return false;

432 } -

433 d->funcs->glBindBuffer(d->type, bufferId); -

434

return true;

executed 9 times by 1 test: return true;

Executed by:

tst_qglbuffer - unknown status

435 } else { -

436

return false;

executed 6 times by 1 test: return false;

Executed by:

tst_qglbuffer - unknown status

437 } -

438 } -

439 -

440 /*! -

441 Releases the buffer associated with this object from the -

442 current GL context. -

443 -

444 This function must be called with the same QGLContext current -

445 as when bind() was called on the buffer. -

446 -

447 \sa bind() -

448 */ -

449 void QGLBuffer::release() -

450 { -

451 #ifndef QT_NO_DEBUG -

452

if (!isCreated())

!isCreated()	Description
TRUE	never evaluated
FALSE	evaluated 9 times by 1 test Evaluated by: tst_qglbuffer - unknown status

0-9

453

qWarning("QGLBuffer::release(): buffer not created");

never executed: QMessageLogger(__FILE__, 453, __PRETTY_FUNCTION__).warning("QGLBuffer::release(): buffer not created");

454 #endif -

455 Q_D(const QGLBuffer); -

456

if (d->guard && d->guard->id())

d->guard	Description
TRUE	evaluated 9 times by 1 test Evaluated by: tst_qglbuffer - unknown status
FALSE	never evaluated

d->guard->id()	Description
TRUE	evaluated 9 times by 1 test Evaluated by: tst_qglbuffer - unknown status
FALSE	never evaluated

0-9

457

d->funcs->glBindBuffer(d->type, 0);

executed 9 times by 1 test: d->funcs->glBindBuffer(d->type, 0);

Executed by:

tst_qglbuffer - unknown status

458

}

executed 9 times by 1 test: end of block

Executed by:

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459 -

460 #undef ctx -

461 -

462 /*! -

463 Releases the buffer associated with \a type in the current -

464 QGLContext. -

465 -

466 This function is a direct call to \c{glBindBuffer(type, 0)} -

467 for use when the caller does not know which QGLBuffer has -

468 been bound to the context but wants to make sure that it -

469 is released. -

470 -

471 \code -

472 QGLBuffer::release(QGLBuffer::VertexBuffer); -

473 \endcode -

474 */ -

475 void QGLBuffer::release(QGLBuffer::Type type) -

476 { -

477

if (QOpenGLContext *ctx = QOpenGLContext::currentContext())

QOpenGLContext...rrentContext()	Description
TRUE	never evaluated
FALSE	never evaluated

478

ctx->functions()->glBindBuffer(GLenum(type), 0);

never executed: ctx->functions()->glBindBuffer(GLenum(type), 0);

479

}

never executed: end of block

480 -

481 #define ctx QGLContext::currentContext() -

482 -

483 /*! -

484 Returns the GL identifier associated with this buffer; zero if -

485 the buffer has not been created. -

486 -

487 \sa isCreated() -

488 */ -

489 GLuint QGLBuffer::bufferId() const -

490 { -

491 Q_D(const QGLBuffer); -

492

return d->guard ? d->guard->id() : 0;

executed 14 times by 1 test: return d->guard ? d->guard->id() : 0;

Executed by:

tst_qglbuffer - unknown status

d->guard	Description
TRUE	evaluated 8 times by 1 test Evaluated by: tst_qglbuffer - unknown status
FALSE	evaluated 6 times by 1 test Evaluated by: tst_qglbuffer - unknown status

6-14

493 } -

494 -

495 #ifndef GL_BUFFER_SIZE -

496 #define GL_BUFFER_SIZE 0x8764 -

497 #endif -

498 -

499 /*! -

500 Returns the size of the data in this buffer, for reading operations. -

501 Returns -1 if fetching the buffer size is not supported, or the -

502 buffer has not been created. -

503 -

504 It is assumed that this buffer has been bound to the current context. -

505 -

506 \sa isCreated(), bind() -

507 */ -

508 int QGLBuffer::size() const -

509 { -

510 Q_D(const QGLBuffer); -

511

if (!d->guard || !d->guard->id())

!d->guard	Description
TRUE	evaluated 6 times by 1 test Evaluated by: tst_qglbuffer - unknown status
FALSE	evaluated 21 times by 1 test Evaluated by: tst_qglbuffer - unknown status

!d->guard->id()	Description
TRUE	never evaluated
FALSE	evaluated 21 times by 1 test Evaluated by: tst_qglbuffer - unknown status

0-21

512

return -1;

executed 6 times by 1 test: return -1;

Executed by:

tst_qglbuffer - unknown status

513 GLint value = -1; -

514 d->funcs->glGetBufferParameteriv(d->type, GL_BUFFER_SIZE, &value); -

515

return value;

executed 21 times by 1 test: return value;

Executed by:

tst_qglbuffer - unknown status

516 } -

517 -

518 /*! -

519 Maps the contents of this buffer into the application's memory -

520 space and returns a pointer to it. Returns null if memory -

521 mapping is not possible. The \a access parameter indicates the -

522 type of access to be performed. -

523 -

524 It is assumed that create() has been called on this buffer and that -

525 it has been bound to the current context. -

526 -

527 This function is only supported under OpenGL/ES if the -

528 \c{GL_OES_mapbuffer} extension is present. -

529 -

530 \sa unmap(), create(), bind() -

531 */ -

532 void *QGLBuffer::map(QGLBuffer::Access access) -

533 { -

534 Q_D(QGLBuffer); -

535 #ifndef QT_NO_DEBUG -

536

if (!isCreated())

!isCreated()	Description
TRUE	never evaluated
FALSE	evaluated 24 times by 1 test Evaluated by: tst_qglbuffer - unknown status

0-24

537

qWarning("QGLBuffer::map(): buffer not created");

never executed: QMessageLogger(__FILE__, 537, __PRETTY_FUNCTION__).warning("QGLBuffer::map(): buffer not created");

538 #endif -

539

if (!d->guard || !d->guard->id())

!d->guard	Description
TRUE	never evaluated
FALSE	evaluated 24 times by 1 test Evaluated by: tst_qglbuffer - unknown status

!d->guard->id()	Description
TRUE	never evaluated
FALSE	evaluated 24 times by 1 test Evaluated by: tst_qglbuffer - unknown status

0-24

540

return 0;

never executed: return 0;

541

return d->funcs->glMapBuffer(d->type, access);

executed 24 times by 1 test: return d->funcs->glMapBuffer(d->type, access);

Executed by:

tst_qglbuffer - unknown status

542 } -

543 -

544 /*! -

545 Unmaps the buffer after it was mapped into the application's -

546 memory space with a previous call to map(). Returns \c true if -

547 the unmap succeeded; false otherwise. -

548 -

549 It is assumed that this buffer has been bound to the current context, -

550 and that it was previously mapped with map(). -

551 -

552 This function is only supported under OpenGL/ES if the -

553 \c{GL_OES_mapbuffer} extension is present. -

554 -

555 \sa map() -

556 */ -

557 bool QGLBuffer::unmap() -

558 { -

559 Q_D(QGLBuffer); -

560 #ifndef QT_NO_DEBUG -

561

if (!isCreated())

!isCreated()	Description
TRUE	never evaluated
FALSE	evaluated 24 times by 1 test Evaluated by: tst_qglbuffer - unknown status

0-24

562

qWarning("QGLBuffer::unmap(): buffer not created");

never executed: QMessageLogger(__FILE__, 562, __PRETTY_FUNCTION__).warning("QGLBuffer::unmap(): buffer not created");

563 #endif -

564

if (!d->guard || !d->guard->id())

!d->guard	Description
TRUE	never evaluated
FALSE	evaluated 24 times by 1 test Evaluated by: tst_qglbuffer - unknown status

!d->guard->id()	Description
TRUE	never evaluated
FALSE	evaluated 24 times by 1 test Evaluated by: tst_qglbuffer - unknown status

0-24

565

return false;

never executed: return false;

566

return d->funcs->glUnmapBuffer(d->type) == GL_TRUE;

executed 24 times by 1 test: return d->funcs->glUnmapBuffer(d->type) == 1;

Executed by:

tst_qglbuffer - unknown status

567 } -

568 -

569 QT_END_NAMESPACE -

Source code

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