qglbuffer.cpp

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

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38 ****************************************************************************/ -

39 -

40 #include <QtOpenGL/qgl.h> -

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

42 #include <private/qopenglextensions_p.h> -

43 #include <QtCore/qatomic.h> -

44 #include "qglbuffer.h" -

45 -

46 QT_BEGIN_NAMESPACE -

47 -

48 /*! -

49 \class QGLBuffer -

50 \inmodule QtOpenGL -

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

52 \since 4.7 -

53 \obsolete -

54 \ingroup painting-3D -

55 -

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

57 client application can avoid uploading vertices, indices, -

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

59 -

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

61 underlying GL buffer object: -

62 -

63 \code -

64 QGLBuffer buffer1(QGLBuffer::IndexBuffer); -

65 buffer1.create(); -

66 -

67 QGLBuffer buffer2 = buffer1; -

68 \endcode -

69 -

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

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

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

73 -

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

75 */ -

76 -

77 /*! -

78 \enum QGLBuffer::Type -

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

80 -

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

82 vertex arrays. -

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

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

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

86 Not supported under OpenGL/ES. -

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

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

89 Not supported under OpenGL/ES. -

90 */ -

91 -

92 /*! -

93 \enum QGLBuffer::UsagePattern -

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

95 -

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

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

98 to StaticDraw. -

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

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

101 under OpenGL/ES. -

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

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

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

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

106 for drawing operations. -

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

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

109 under OpenGL/ES. -

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

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

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

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

114 many times for drawing operations. -

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

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

117 Not supported under OpenGL/ES. -

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

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

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

121 */ -

122 -

123 /*! -

124 \enum QGLBuffer::Access -

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

126 -

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

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

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

130 */ -

131 -

132 class QGLBufferPrivate -

133 { -

134 public: -

135 QGLBufferPrivate(QGLBuffer::Type t) -

136 : ref(1), -

137 type(t), -

138 guard(0), -

139 usagePattern(QGLBuffer::StaticDraw), -

140 actualUsagePattern(QGLBuffer::StaticDraw), -

141 funcs(0) -

142 { -

143

}

executed 7 times by 1 test: end of block

Executed by:

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144 -

145 QAtomicInt ref; -

146 QGLBuffer::Type type; -

147 QGLSharedResourceGuardBase *guard; -

148 QGLBuffer::UsagePattern usagePattern; -

149 QGLBuffer::UsagePattern actualUsagePattern; -

150 QOpenGLExtensions *funcs; -

151 }; -

152 -

153 /*! -

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

155 -

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

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

158 -

159 \sa create() -

160 */ -

161 QGLBuffer::QGLBuffer() -

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

163 { -

164

}

never executed: end of block

165 -

166 /*! -

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

168 -

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

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

171 -

172 \sa create() -

173 */ -

174 QGLBuffer::QGLBuffer(QGLBuffer::Type type) -

175 : d_ptr(new QGLBufferPrivate(type)) -

176 { -

177

}

executed 7 times by 1 test: end of block

Executed by:

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178 -

179 /*! -

180 Constructs a shallow copy of \a other. -

181 -

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

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

184 */ -

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

186 : d_ptr(other.d_ptr) -

187 { -

188 d_ptr->ref.ref(); -

189

}

never executed: end of block

190 -

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

192 -

193 /*! -

194 Destroys this buffer object, including the storage being -

195 used in the GL server. -

196 */ -

197 QGLBuffer::~QGLBuffer() -

198 { -

199

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

200 destroy(); -

201 delete d_ptr; -

202

}

executed 7 times by 1 test: end of block

Executed by:

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203

}

executed 7 times by 1 test: end of block

Executed by:

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204 -

205 /*! -

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

207 -

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

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

210 */ -

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

212 { -

213

if (d_ptr != other.d_ptr) {

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

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

215

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

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

216 destroy(); -

217 delete d_ptr; -

218

}

never executed: end of block

219 d_ptr = other.d_ptr; -

220

}

never executed: end of block

221

return *this;

never executed: return *this;

222 } -

223 -

224 /*! -

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

226 */ -

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

228 { -

229 Q_D(const QGLBuffer); -

230

return d->type;

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

Executed by:

tst_qglbuffer - unknown status

231 } -

232 -

233 /*! -

234 Returns the usage pattern for this buffer object. -

235 The default value is StaticDraw. -

236 -

237 \sa setUsagePattern() -

238 */ -

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

240 { -

241 Q_D(const QGLBuffer); -

242

return d->usagePattern;

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

Executed by:

tst_qglbuffer - unknown status

243 } -

244 -

245 /*! -

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

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

248 -

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

250 */ -

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

252 { -

253 Q_D(QGLBuffer); -

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

255

}

executed 6 times by 1 test: end of block

Executed by:

tst_qglbuffer - unknown status

256 -

257 #undef ctx -

258 -

259 namespace { -

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

261 { -

262 Q_ASSERT(ctx); -

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

264

}

executed 6 times by 1 test: end of block

Executed by:

tst_qglbuffer - unknown status

265 } -

266 -

267 /*! -

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

269 the object was created; false otherwise. -

270 -

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

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

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

274 -

275 This function will return false if the GL implementation -

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

277 -

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

279 */ -

280 bool QGLBuffer::create() -

281 { -

282 Q_D(QGLBuffer); -

283

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

284

return true;

never executed: return true;

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

286

if (ctx) {

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

0-7

287 delete d->funcs; -

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

289

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

290

return false;

never executed: return false;

291 -

292 GLuint bufferId = 0; -

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

294

if (bufferId) {

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

0-7

295

if (d->guard)

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

0-7

296

d->guard->free();

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

297 -

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

299

return true;

executed 7 times by 1 test: return true;

Executed by:

tst_qglbuffer - unknown status

300 } -

301

}

never executed: end of block

302

return false;

never executed: return false;

303 } -

304 -

305 #define ctx QGLContext::currentContext() -

306 -

307 /*! -

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

309 -

310 \sa create(), destroy() -

311 */ -

312 bool QGLBuffer::isCreated() const -

313 { -

314 Q_D(const QGLBuffer); -

315

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

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

Executed by:

tst_qglbuffer - unknown status

106

316 } -

317 -

318 /*! -

319 Destroys this buffer object, including the storage being -

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

321 become invalid. -

322 */ -

323 void QGLBuffer::destroy() -

324 { -

325 Q_D(QGLBuffer); -

326

if (d->guard) {

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

0-7

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

328 d->guard = 0; -

329

}

executed 7 times by 1 test: end of block

Executed by:

tst_qglbuffer - unknown status

330

}

executed 7 times by 1 test: end of block

Executed by:

tst_qglbuffer - unknown status

331 -

332 /*! -

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

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

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

336 under OpenGL/ES. -

337 -

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

339 -

340 \sa write(), bind() -

341 */ -

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

343 { -

344 #if !defined(QT_OPENGL_ES) -

345 Q_D(QGLBuffer); -

346

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

347

return false;

never executed: return false;

348

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

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

350

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

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

Executed by:

tst_qglbuffer - unknown status

351 #else -

352 Q_UNUSED(offset); -

353 Q_UNUSED(data); -

354 Q_UNUSED(count); -

355 return false; -

356 #endif -

357 } -

358 -

359 /*! -

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

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

362 will be left unmodified. -

363 -

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

365 it has been bound to the current context. -

366 -

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

368 */ -

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

370 { -

371 #ifndef QT_NO_DEBUG -

372

if (!isCreated())

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

0-6

373

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

never executed: QMessageLogger(__FILE__, 373, __PRETTY_FUNCTION__).warning("QGLBuffer::allocate(): buffer not created");

374 #endif -

375 Q_D(QGLBuffer); -

376

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

377

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

378

}

executed 6 times by 1 test: end of block

Executed by:

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379 -

380 /*! -

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

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

383 -

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

385 it has been bound to the current context. -

386 -

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

388 */ -

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

390 { -

391 #ifndef QT_NO_DEBUG -

392

if (!isCreated())

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

0-19

393

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

never executed: QMessageLogger(__FILE__, 393, __PRETTY_FUNCTION__).warning("QGLBuffer::allocate(): buffer not created");

394 #endif -

395 Q_D(QGLBuffer); -

396

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

397

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

398

}

executed 19 times by 1 test: end of block

Executed by:

tst_qglbuffer - unknown status

399 -

400 /*! -

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

402 \overload -

403 -

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

405 contents will be removed. -

406 -

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

408 it has been bound to the current context. -

409 -

410 \sa create(), write() -

411 */ -

412 -

413 /*! -

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

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

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

417 -

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

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

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

421 -

422 \sa release(), create() -

423 */ -

424 bool QGLBuffer::bind() -

425 { -

426 #ifndef QT_NO_DEBUG -

427

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

428

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

executed 6 times by 1 test: QMessageLogger(__FILE__, 428, __PRETTY_FUNCTION__).warning("QGLBuffer::bind(): buffer not created");

Executed by:

tst_qglbuffer - unknown status

429 #endif -

430 Q_D(const QGLBuffer); -

431

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

432

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

433

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

434 #ifndef QT_NO_DEBUG -

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

436 #endif -

437

return false;

never executed: return false;

438 } -

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

440

return true;

executed 9 times by 1 test: return true;

Executed by:

tst_qglbuffer - unknown status

441 } else { -

442

return false;

executed 6 times by 1 test: return false;

Executed by:

tst_qglbuffer - unknown status

443 } -

444 } -

445 -

446 /*! -

447 Releases the buffer associated with this object from the -

448 current GL context. -

449 -

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

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

452 -

453 \sa bind() -

454 */ -

455 void QGLBuffer::release() -

456 { -

457 #ifndef QT_NO_DEBUG -

458

if (!isCreated())

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

0-9

459

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

never executed: QMessageLogger(__FILE__, 459, __PRETTY_FUNCTION__).warning("QGLBuffer::release(): buffer not created");

460 #endif -

461 Q_D(const QGLBuffer); -

462

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

463

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

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

Executed by:

tst_qglbuffer - unknown status

464

}

executed 9 times by 1 test: end of block

Executed by:

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465 -

466 #undef ctx -

467 -

468 /*! -

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

470 QGLContext. -

471 -

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

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

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

475 is released. -

476 -

477 \code -

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

479 \endcode -

480 */ -

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

482 { -

483

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

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

484

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

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

485

}

never executed: end of block

486 -

487 #define ctx QGLContext::currentContext() -

488 -

489 /*! -

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

491 the buffer has not been created. -

492 -

493 \sa isCreated() -

494 */ -

495 GLuint QGLBuffer::bufferId() const -

496 { -

497 Q_D(const QGLBuffer); -

498

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

499 } -

500 -

501 #ifndef GL_BUFFER_SIZE -

502 #define GL_BUFFER_SIZE 0x8764 -

503 #endif -

504 -

505 /*! -

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

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

508 buffer has not been created. -

509 -

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

511 -

512 \sa isCreated(), bind() -

513 */ -

514 int QGLBuffer::size() const -

515 { -

516 Q_D(const QGLBuffer); -

517

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

518

return -1;

executed 6 times by 1 test: return -1;

Executed by:

tst_qglbuffer - unknown status

519 GLint value = -1; -

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

521

return value;

executed 21 times by 1 test: return value;

Executed by:

tst_qglbuffer - unknown status

522 } -

523 -

524 /*! -

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

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

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

528 type of access to be performed. -

529 -

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

531 it has been bound to the current context. -

532 -

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

534 \c{GL_OES_mapbuffer} extension is present. -

535 -

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

537 */ -

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

539 { -

540 Q_D(QGLBuffer); -

541 #ifndef QT_NO_DEBUG -

542

if (!isCreated())

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

0-24

543

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

never executed: QMessageLogger(__FILE__, 543, __PRETTY_FUNCTION__).warning("QGLBuffer::map(): buffer not created");

544 #endif -

545

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

546

return 0;

never executed: return 0;

547

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

548 } -

549 -

550 /*! -

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

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

553 the unmap succeeded; false otherwise. -

554 -

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

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

557 -

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

559 \c{GL_OES_mapbuffer} extension is present. -

560 -

561 \sa map() -

562 */ -

563 bool QGLBuffer::unmap() -

564 { -

565 Q_D(QGLBuffer); -

566 #ifndef QT_NO_DEBUG -

567

if (!isCreated())

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

0-24

568

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

never executed: QMessageLogger(__FILE__, 568, __PRETTY_FUNCTION__).warning("QGLBuffer::unmap(): buffer not created");

569 #endif -

570

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

571

return false;

never executed: return false;

572

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

573 } -

574 -

575 QT_END_NAMESPACE -

Source code

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