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qsurfaceformat.cpp

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39 -

40 #include "qsurfaceformat.h" -

41 -

42 #include <QtCore/qatomic.h> -

43 #include <QtCore/QDebug> -

44 #include <QOpenGLContext> -

45 #include <QtGui/qguiapplication.h> -

46 -

47 #ifdef major -

48 #undef major -

49 #endif -

50 -

51 #ifdef minor -

52 #undef minor -

53 #endif -

54 -

55 QT_BEGIN_NAMESPACE -

56 -

57 class QSurfaceFormatPrivate -

58 { -

59 public: -

60 explicit QSurfaceFormatPrivate(QSurfaceFormat::FormatOptions _opts = 0) -

61 : ref(1) -

62 , opts(_opts) -

63 , redBufferSize(-1) -

64 , greenBufferSize(-1) -

65 , blueBufferSize(-1) -

66 , alphaBufferSize(-1) -

67 , depthSize(-1) -

68 , stencilSize(-1) -

69 , swapBehavior(QSurfaceFormat::DefaultSwapBehavior) -

70 , numSamples(-1) -

71 , renderableType(QSurfaceFormat::DefaultRenderableType) -

72 , profile(QSurfaceFormat::NoProfile) -

73 , major(2) -

74 , minor(0) -

75 , swapInterval(1) // default to vsync -

76 { -

}

never executed: end of block

78 -

79 QSurfaceFormatPrivate(const QSurfaceFormatPrivate *other) -

80 : ref(1), -

81 opts(other->opts), -

82 redBufferSize(other->redBufferSize), -

83 greenBufferSize(other->greenBufferSize), -

84 blueBufferSize(other->blueBufferSize), -

85 alphaBufferSize(other->alphaBufferSize), -

86 depthSize(other->depthSize), -

87 stencilSize(other->stencilSize), -

88 swapBehavior(other->swapBehavior), -

89 numSamples(other->numSamples), -

90 renderableType(other->renderableType), -

91 profile(other->profile), -

92 major(other->major), -

93 minor(other->minor), -

94 swapInterval(other->swapInterval) -

95 { -

}

never executed: end of block

97 -

98 QAtomicInt ref; -

99 QSurfaceFormat::FormatOptions opts; -

100 int redBufferSize; -

101 int greenBufferSize; -

102 int blueBufferSize; -

103 int alphaBufferSize; -

104 int depthSize; -

105 int stencilSize; -

106 QSurfaceFormat::SwapBehavior swapBehavior; -

107 int numSamples; -

108 QSurfaceFormat::RenderableType renderableType; -

109 QSurfaceFormat::OpenGLContextProfile profile; -

110 int major; -

111 int minor; -

112 int swapInterval; -

113 }; -

114 -

115 /*! -

116 \class QSurfaceFormat -

117 \since 5.0 -

118 \brief The QSurfaceFormat class represents the format of a QSurface. -

119 \inmodule QtGui -

120 -

121 The format includes the size of the color buffers, red, green, and blue; -

122 the size of the alpha buffer; the size of the depth and stencil buffers; -

123 and number of samples per pixel for multisampling. In addition, the format -

124 contains surface configuration parameters such as OpenGL profile and -

125 version for rendering, whether or not to enable stereo buffers, and swap -

126 behaviour. -

127 */ -

128 -

129 /*! -

130 \enum QSurfaceFormat::FormatOption -

131 -

132 This enum contains format options for use with QSurfaceFormat. -

133 -

134 \value StereoBuffers Used to request stereo buffers in the surface format. -

135 \value DebugContext Used to request a debug context with extra debugging information. -

136 \value DeprecatedFunctions Used to request that deprecated functions be included -

137 in the OpenGL context profile. If not specified, you should get a forward compatible context -

138 without support functionality marked as deprecated. This requires OpenGL version 3.0 or higher. -

139 \value ResetNotification Enables notifications about resets of the OpenGL context. The status is then -

140 queryable via the context's \l{QOpenGLContext::isValid()}{isValid()} function. Note that not setting -

141 this flag does not guarantee that context state loss never occurs. Additionally, some implementations -

142 may choose to report context loss regardless of this flag. -

143 */ -

144 -

145 /*! -

146 \enum QSurfaceFormat::SwapBehavior -

147 -

148 This enum is used by QSurfaceFormat to specify the swap behaviour of a surface. The swap behaviour -

149 is mostly transparent to the application, but it affects factors such as rendering latency and -

150 throughput. -

151 -

152 \value DefaultSwapBehavior The default, unspecified swap behaviour of the platform. -

153 \value SingleBuffer Used to request single buffering, which might result in flickering -

154 when OpenGL rendering is done directly to screen without an intermediate offscreen -

155 buffer. -

156 \value DoubleBuffer This is typically the default swap behaviour on desktop platforms, -

157 consisting of one back buffer and one front buffer. Rendering is done to the back -

158 buffer, and then the back buffer and front buffer are swapped, or the contents of -

159 the back buffer are copied to the front buffer, depending on the implementation. -

160 \value TripleBuffer This swap behaviour is sometimes used in order to decrease the -

161 risk of skipping a frame when the rendering rate is just barely keeping up with -

162 the screen refresh rate. Depending on the platform it might also lead to slightly -

163 more efficient use of the GPU due to improved pipelining behaviour. Triple buffering -

164 comes at the cost of an extra frame of memory usage and latency, and might not be -

165 supported depending on the underlying platform. -

166 */ -

167 -

168 /*! -

169 \enum QSurfaceFormat::RenderableType -

170 -

171 This enum specifies the rendering backend for the surface. -

172 -

173 \value DefaultRenderableType The default, unspecified rendering method -

174 \value OpenGL Desktop OpenGL rendering -

175 \value OpenGLES OpenGL ES 2.0 rendering -

176 \value OpenVG Open Vector Graphics rendering -

177 */ -

178 -

179 /*! -

180 \enum QSurfaceFormat::OpenGLContextProfile -

181 -

182 This enum is used to specify the OpenGL context profile, in -

183 conjunction with QSurfaceFormat::setMajorVersion() and -

184 QSurfaceFormat::setMinorVersion(). -

185 -

186 Profiles are exposed in OpenGL 3.2 and above, and are used -

187 to choose between a restricted core profile, and a compatibility -

188 profile which might contain deprecated support functionality. -

189 -

190 Note that the core profile might still contain functionality that -

191 is deprecated and scheduled for removal in a higher version. To -

192 get access to the deprecated functionality for the core profile -

193 in the set OpenGL version you can use the QSurfaceFormat format option -

194 QSurfaceFormat::DeprecatedFunctions. -

195 -

196 \value NoProfile OpenGL version is lower than 3.2. For 3.2 and newer this is same as CoreProfile. -

197 \value CoreProfile Functionality deprecated in OpenGL version 3.0 is not available. -

198 \value CompatibilityProfile Functionality from earlier OpenGL versions is available. -

199 */ -

200 -

201 /*! -

202 Constructs a default initialized QSurfaceFormat. -

203 -

204 \note By default OpenGL 2.0 is requested since this provides the highest -

205 grade of portability between platforms and OpenGL implementations. -

206 */ -

207 QSurfaceFormat::QSurfaceFormat() : d(new QSurfaceFormatPrivate) -

208 { -

209

}

never executed: end of block

210 -

211 /*! -

212 Constructs a QSurfaceFormat with the given format \a options. -

213 */ -

214 QSurfaceFormat::QSurfaceFormat(QSurfaceFormat::FormatOptions options) : -

215 d(new QSurfaceFormatPrivate(options)) -

216 { -

217

}

never executed: end of block

218 -

219 /*! -

220 \internal -

221 */ -

222 void QSurfaceFormat::detach() -

223 { -

224

if (d->ref.load() != 1) {

d->ref.load() != 1	Description
TRUE	never evaluated
FALSE	never evaluated

225 QSurfaceFormatPrivate *newd = new QSurfaceFormatPrivate(d); -

226

if (!d->ref.deref())

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

227

delete d;

never executed: delete d;

228 d = newd; -

229

}

never executed: end of block

230

}

never executed: end of block

231 -

232 /*! -

233 Constructs a copy of \a other. -

234 */ -

235 QSurfaceFormat::QSurfaceFormat(const QSurfaceFormat &other) -

236 { -

237 d = other.d; -

238 d->ref.ref(); -

239

}

never executed: end of block

240 -

241 /*! -

242 Assigns \a other to this object. -

243 */ -

244 QSurfaceFormat &QSurfaceFormat::operator=(const QSurfaceFormat &other) -

245 { -

246

if (d != other.d) {

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

247 other.d->ref.ref(); -

248

if (!d->ref.deref())

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

249

delete d;

never executed: delete d;

250 d = other.d; -

251

}

never executed: end of block

252

return *this;

never executed: return *this;

253 } -

254 -

255 /*! -

256 Destroys the QSurfaceFormat. -

257 */ -

258 QSurfaceFormat::~QSurfaceFormat() -

259 { -

260

if (!d->ref.deref())

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

261

delete d;

never executed: delete d;

262

}

never executed: end of block

263 -

264 /*! -

265 \fn bool QSurfaceFormat::stereo() const -

266 -

267 Returns \c true if stereo buffering is enabled; otherwise returns -

268 false. Stereo buffering is disabled by default. -

269 -

270 \sa setStereo() -

271 */ -

272 -

273 /*! -

274 If \a enable is true enables stereo buffering; otherwise disables -

275 stereo buffering. -

276 -

277 Stereo buffering is disabled by default. -

278 -

279 Stereo buffering provides extra color buffers to generate left-eye -

280 and right-eye images. -

281 -

282 \sa stereo() -

283 */ -

284 void QSurfaceFormat::setStereo(bool enable) -

285 { -

286 QSurfaceFormat::FormatOptions newOptions = d->opts; -

287 newOptions.setFlag(QSurfaceFormat::StereoBuffers, enable); -

288 -

289

if (int(newOptions) != int(d->opts)) {

int(newOptions...= int(d->opts)	Description
TRUE	never evaluated
FALSE	never evaluated

290 detach(); -

291 d->opts = newOptions; -

292

}

never executed: end of block

293

}

never executed: end of block

294 -

295 /*! -

296 Returns the number of samples per pixel when multisampling is -

297 enabled. By default, multisampling is disabled. -

298 -

299 \sa setSamples() -

300 */ -

301 int QSurfaceFormat::samples() const -

302 { -

303

return d->numSamples;

never executed: return d->numSamples;

304 } -

305 -

306 /*! -

307 Set the preferred number of samples per pixel when multisampling -

308 is enabled to \a numSamples. By default, multisampling is disabled. -

309 -

310 \sa samples() -

311 */ -

312 void QSurfaceFormat::setSamples(int numSamples) -

313 { -

314

if (d->numSamples != numSamples) {

d->numSamples != numSamples	Description
TRUE	never evaluated
FALSE	never evaluated

315 detach(); -

316 d->numSamples = numSamples; -

317

}

never executed: end of block

318

}

never executed: end of block

319 -

320 #if QT_DEPRECATED_SINCE(5, 2) -

321 /*! -

322 \obsolete -

323 \overload -

324 -

325 Use setOption(QSurfaceFormat::FormatOption, bool) or setOptions() instead. -

326 -

327 Sets the format options to the OR combination of \a opt and the -

328 current format options. -

329 -

330 \sa options(), testOption() -

331 */ -

332 void QSurfaceFormat::setOption(QSurfaceFormat::FormatOptions opt) -

333 { -

334 const QSurfaceFormat::FormatOptions newOptions = d->opts | opt; -

335

if (int(newOptions) != int(d->opts)) {

int(newOptions...= int(d->opts)	Description
TRUE	never evaluated
FALSE	never evaluated

336 detach(); -

337 d->opts = newOptions; -

338

}

never executed: end of block

339

}

never executed: end of block

340 -

341 /*! -

342 \obsolete -

343 \overload -

344 -

345 Use testOption(QSurfaceFormat::FormatOption) instead. -

346 -

347 Returns \c true if any of the options in \a opt is currently set -

348 on this object; otherwise returns false. -

349 -

350 \sa setOption() -

351 */ -

352 bool QSurfaceFormat::testOption(QSurfaceFormat::FormatOptions opt) const -

353 { -

354

return d->opts & opt;

never executed: return d->opts & opt;

355 } -

356 #endif // QT_DEPRECATED_SINCE(5, 2) -

357 -

358 /*! -

359 \since 5.3 -

360 -

361 Sets the format options to \a options. -

362 -

363 \sa options(), testOption() -

364 */ -

365 void QSurfaceFormat::setOptions(QSurfaceFormat::FormatOptions options) -

366 { -

367

if (int(d->opts) != int(options)) {

int(d->opts) != int(options)	Description
TRUE	never evaluated
FALSE	never evaluated

368 detach(); -

369 d->opts = options; -

370

}

never executed: end of block

371

}

never executed: end of block

372 -

373 /*! -

374 \since 5.3 -

375 -

376 Sets the format option \a option if \a on is true; otherwise, clears the option. -

377 -

378 \sa setOptions(), options(), testOption() -

379 */ -

380 void QSurfaceFormat::setOption(QSurfaceFormat::FormatOption option, bool on) -

381 { -

382

if (testOption(option) == on)

testOption(option) == on	Description
TRUE	never evaluated
FALSE	never evaluated

383

return;

never executed: return;

384 detach(); -

385

if (on)

on	Description
TRUE	never evaluated
FALSE	never evaluated

386

d->opts |= option;

never executed: d->opts |= option;

387 else -

388

d->opts &= ~option;

never executed: d->opts &= ~option;

389 } -

390 -

391 /*! -

392 \since 5.3 -

393 -

394 Returns true if the format option \a option is set; otherwise returns false. -

395 -

396 \sa options() -

397 */ -

398 bool QSurfaceFormat::testOption(QSurfaceFormat::FormatOption option) const -

399 { -

400

return d->opts & option;

never executed: return d->opts & option;

401 } -

402 -

403 /*! -

404 \since 5.3 -

405 -

406 Returns the currently set format options. -

407 -

408 \sa setOption(), setOptions(), testOption() -

409 */ -

410 QSurfaceFormat::FormatOptions QSurfaceFormat::options() const -

411 { -

412

return d->opts;

never executed: return d->opts;

413 } -

414 -

415 /*! -

416 Set the minimum depth buffer size to \a size. -

417 -

418 \sa depthBufferSize() -

419 */ -

420 void QSurfaceFormat::setDepthBufferSize(int size) -

421 { -

422

if (d->depthSize != size) {

d->depthSize != size	Description
TRUE	never evaluated
FALSE	never evaluated

423 detach(); -

424 d->depthSize = size; -

425

}

never executed: end of block

426

}

never executed: end of block

427 -

428 /*! -

429 Returns the depth buffer size. -

430 -

431 \sa setDepthBufferSize() -

432 */ -

433 int QSurfaceFormat::depthBufferSize() const -

434 { -

435

return d->depthSize;

never executed: return d->depthSize;

436 } -

437 -

438 /*! -

439 Set the swap \a behavior of the surface. -

440 -

441 The swap behavior specifies whether single, double, or triple -

442 buffering is desired. The default, DefaultSwapBehavior, -

443 gives the default swap behavior of the platform. -

444 */ -

445 void QSurfaceFormat::setSwapBehavior(SwapBehavior behavior) -

446 { -

447

if (d->swapBehavior != behavior) {

d->swapBehavior != behavior	Description
TRUE	never evaluated
FALSE	never evaluated

448 detach(); -

449 d->swapBehavior = behavior; -

450

}

never executed: end of block

451

}

never executed: end of block

452 -

453 /*! -

454 Returns the configured swap behaviour. -

455 -

456 \sa setSwapBehavior() -

457 */ -

458 QSurfaceFormat::SwapBehavior QSurfaceFormat::swapBehavior() const -

459 { -

460

return d->swapBehavior;

never executed: return d->swapBehavior;

461 } -

462 -

463 /*! -

464 Returns \c true if the alpha buffer size is greater than zero. -

465 -

466 This means that the surface might be used with per pixel -

467 translucency effects. -

468 */ -

469 bool QSurfaceFormat::hasAlpha() const -

470 { -

471

return d->alphaBufferSize > 0;

never executed: return d->alphaBufferSize > 0;

472 } -

473 -

474 /*! -

475 Set the preferred stencil buffer size to \a size bits. -

476 -

477 \sa stencilBufferSize() -

478 */ -

479 void QSurfaceFormat::setStencilBufferSize(int size) -

480 { -

481

if (d->stencilSize != size) {

d->stencilSize != size	Description
TRUE	never evaluated
FALSE	never evaluated

482 detach(); -

483 d->stencilSize = size; -

484

}

never executed: end of block

485

}

never executed: end of block

486 -

487 /*! -

488 Returns the stencil buffer size in bits. -

489 -

490 \sa setStencilBufferSize() -

491 */ -

492 int QSurfaceFormat::stencilBufferSize() const -

493 { -

494

return d->stencilSize;

never executed: return d->stencilSize;

495 } -

496 -

497 /*! -

498 Get the size in bits of the red channel of the color buffer. -

499 */ -

500 int QSurfaceFormat::redBufferSize() const -

501 { -

502

return d->redBufferSize;

never executed: return d->redBufferSize;

503 } -

504 -

505 /*! -

506 Get the size in bits of the green channel of the color buffer. -

507 */ -

508 int QSurfaceFormat::greenBufferSize() const -

509 { -

510

return d->greenBufferSize;

never executed: return d->greenBufferSize;

511 } -

512 -

513 /*! -

514 Get the size in bits of the blue channel of the color buffer. -

515 */ -

516 int QSurfaceFormat::blueBufferSize() const -

517 { -

518

return d->blueBufferSize;

never executed: return d->blueBufferSize;

519 } -

520 -

521 /*! -

522 Get the size in bits of the alpha channel of the color buffer. -

523 */ -

524 int QSurfaceFormat::alphaBufferSize() const -

525 { -

526

return d->alphaBufferSize;

never executed: return d->alphaBufferSize;

527 } -

528 -

529 /*! -

530 Set the desired \a size in bits of the red channel of the color buffer. -

531 -

532 \note On Mac OSX, be sure to set the buffer size of all color channels, -

533 otherwise this setting will have no effect. If one of the buffer sizes is not set, -

534 the current bit-depth of the screen is used. -

535 */ -

536 void QSurfaceFormat::setRedBufferSize(int size) -

537 { -

538

if (d->redBufferSize != size) {

d->redBufferSize != size	Description
TRUE	never evaluated
FALSE	never evaluated

539 detach(); -

540 d->redBufferSize = size; -

541

}

never executed: end of block

542

}

never executed: end of block

543 -

544 /*! -

545 Set the desired \a size in bits of the green channel of the color buffer. -

546 -

547 \note On Mac OSX, be sure to set the buffer size of all color channels, -

548 otherwise this setting will have no effect. If one of the buffer sizes is not set, -

549 the current bit-depth of the screen is used. -

550 */ -

551 void QSurfaceFormat::setGreenBufferSize(int size) -

552 { -

553

if (d->greenBufferSize != size) {

d->greenBufferSize != size	Description
TRUE	never evaluated
FALSE	never evaluated

554 detach(); -

555 d->greenBufferSize = size; -

556

}

never executed: end of block

557

}

never executed: end of block

558 -

559 /*! -

560 Set the desired \a size in bits of the blue channel of the color buffer. -

561 -

562 \note On Mac OSX, be sure to set the buffer size of all color channels, -

563 otherwise this setting will have no effect. If one of the buffer sizes is not set, -

564 the current bit-depth of the screen is used. -

565 */ -

566 void QSurfaceFormat::setBlueBufferSize(int size) -

567 { -

568

if (d->blueBufferSize != size) {

d->blueBufferSize != size	Description
TRUE	never evaluated
FALSE	never evaluated

569 detach(); -

570 d->blueBufferSize = size; -

571

}

never executed: end of block

572

}

never executed: end of block

573 -

574 /*! -

575 Set the desired \a size in bits of the alpha channel of the color buffer. -

576 */ -

577 void QSurfaceFormat::setAlphaBufferSize(int size) -

578 { -

579

if (d->alphaBufferSize != size) {

d->alphaBufferSize != size	Description
TRUE	never evaluated
FALSE	never evaluated

580 detach(); -

581 d->alphaBufferSize = size; -

582

}

never executed: end of block

583

}

never executed: end of block

584 -

585 /*! -

586 Sets the desired renderable \a type. -

587 -

588 Chooses between desktop OpenGL, OpenGL ES, and OpenVG. -

589 */ -

590 void QSurfaceFormat::setRenderableType(RenderableType type) -

591 { -

592

if (d->renderableType != type) {

d->renderableType != type	Description
TRUE	never evaluated
FALSE	never evaluated

593 detach(); -

594 d->renderableType = type; -

595

}

never executed: end of block

596

}

never executed: end of block

597 -

598 /*! -

599 Gets the renderable type. -

600 -

601 Chooses between desktop OpenGL, OpenGL ES, and OpenVG. -

602 */ -

603 QSurfaceFormat::RenderableType QSurfaceFormat::renderableType() const -

604 { -

605

return d->renderableType;

never executed: return d->renderableType;

606 } -

607 -

608 /*! -

609 Sets the desired OpenGL context \a profile. -

610 -

611 This setting is ignored if the requested OpenGL version is -

612 less than 3.2. -

613 */ -

614 void QSurfaceFormat::setProfile(OpenGLContextProfile profile) -

615 { -

616

if (d->profile != profile) {

d->profile != profile	Description
TRUE	never evaluated
FALSE	never evaluated

617 detach(); -

618 d->profile = profile; -

619

}

never executed: end of block

620

}

never executed: end of block

621 -

622 /*! -

623 Get the configured OpenGL context profile. -

624 -

625 This setting is ignored if the requested OpenGL version is -

626 less than 3.2. -

627 */ -

628 QSurfaceFormat::OpenGLContextProfile QSurfaceFormat::profile() const -

629 { -

630

return d->profile;

never executed: return d->profile;

631 } -

632 -

633 /*! -

634 Sets the desired \a major OpenGL version. -

635 */ -

636 void QSurfaceFormat::setMajorVersion(int major) -

637 { -

638

if (d->major != major) {

d->major != major	Description
TRUE	never evaluated
FALSE	never evaluated

639 detach(); -

640 d->major = major; -

641

}

never executed: end of block

642

}

never executed: end of block

643 -

644 /*! -

645 Returns the major OpenGL version. -

646 -

647 The default version is 2.0. -

648 */ -

649 int QSurfaceFormat::majorVersion() const -

650 { -

651

return d->major;

never executed: return d->major;

652 } -

653 -

654 /*! -

655 Sets the desired \a minor OpenGL version. -

656 -

657 The default version is 2.0. -

658 */ -

659 void QSurfaceFormat::setMinorVersion(int minor) -

660 { -

661

if (d->minor != minor) {

d->minor != minor	Description
TRUE	never evaluated
FALSE	never evaluated

662 detach(); -

663 d->minor = minor; -

664

}

never executed: end of block

665

}

never executed: end of block

666 -

667 /*! -

668 Returns the minor OpenGL version. -

669 */ -

670 int QSurfaceFormat::minorVersion() const -

671 { -

672

return d->minor;

never executed: return d->minor;

673 } -

674 -

675 /*! -

676 Returns a QPair<int, int> representing the OpenGL version. -

677 -

678 Useful for version checks, for example format.version() >= qMakePair(3, 2) -

679 */ -

680 QPair<int, int> QSurfaceFormat::version() const -

681 { -

682

return qMakePair(d->major, d->minor);

never executed: return qMakePair(d->major, d->minor);

683 } -

684 -

685 /*! -

686 Sets the desired \a major and \a minor OpenGL versions. -

687 -

688 The default version is 2.0. -

689 */ -

690 void QSurfaceFormat::setVersion(int major, int minor) -

691 { -

692

if (d->minor != minor || d->major != major) {

d->minor != minor	Description
TRUE	never evaluated
FALSE	never evaluated

d->major != major	Description
TRUE	never evaluated
FALSE	never evaluated

693 detach(); -

694 d->minor = minor; -

695 d->major = major; -

696

}

never executed: end of block

697

}

never executed: end of block

698 -

699 /*! -

700 Sets the preferred swap interval. The swap interval specifies the -

701 minimum number of video frames that are displayed before a buffer -

702 swap occurs. This can be used to sync the GL drawing into a window -

703 to the vertical refresh of the screen. -

704 -

705 Setting an \a interval value of 0 will turn the vertical refresh -

706 syncing off, any value higher than 0 will turn the vertical -

707 syncing on. Setting \a interval to a higher value, for example 10, -

708 results in having 10 vertical retraces between every buffer swap. -

709 -

710 The default interval is 1. -

711 -

712 Changing the swap interval may not be supported by the underlying -

713 platform. In this case, the request will be silently ignored. -

714 -

715 \since 5.3 -

716 -

717 \sa swapInterval() -

718 */ -

719 void QSurfaceFormat::setSwapInterval(int interval) -

720 { -

721

if (d->swapInterval != interval) {

d->swapInterval != interval	Description
TRUE	never evaluated
FALSE	never evaluated

722 detach(); -

723 d->swapInterval = interval; -

724

}

never executed: end of block

725

}

never executed: end of block

726 -

727 /*! -

728 Returns the swap interval. -

729 -

730 \since 5.3 -

731 -

732 \sa setSwapInterval() -

733 */ -

734 int QSurfaceFormat::swapInterval() const -

735 { -

736

return d->swapInterval;

never executed: return d->swapInterval;

737 } -

738 -

739

Q_GLOBAL_STATIC(QSurfaceFormat, qt_default_surface_format)

never executed: end of block

never executed: guard.store(QtGlobalStatic::Destroyed);

never executed: return &holder.value;

guard.load() =...c::Initialized	Description
TRUE	never evaluated
FALSE	never evaluated

740 -

741 /*! -

742 Sets the global default surface \a format. -

743 -

744 This format is used by default in QOpenGLContext, QWindow, QOpenGLWidget and -

745 similar classes. -

746 -

747 It can always be overridden on a per-instance basis by using the class in -

748 question's own setFormat() function. However, it is often more convenient to -

749 set the format for all windows once at the start of the application. It also -

750 guarantees proper behavior in cases where shared contexts are required, -

751 because settings the format via this function guarantees that all contexts -

752 and surfaces, even the ones created internally by Qt, will use the same -

753 format. -

754 -

755 \note When setting Qt::AA_ShareOpenGLContexts, it is strongly recommended to -

756 place the call to this function before the construction of the -

757 QGuiApplication or QApplication. Otherwise \a format will not be applied to -

758 the global share context and therefore issues may arise with context sharing -

759 afterwards. -

760 -

761 \since 5.4 -

762 \sa defaultFormat() -

763 */ -

764 void QSurfaceFormat::setDefaultFormat(const QSurfaceFormat &format) -

765 { -

766 #ifndef QT_NO_OPENGL -

767

if (qApp) {

(static_cast<Q...::instance()))	Description
TRUE	never evaluated
FALSE	never evaluated

768 QOpenGLContext *globalContext = QOpenGLContext::globalShareContext(); -

769

if (globalContext && globalContext->isValid()) {

globalContext	Description
TRUE	never evaluated
FALSE	never evaluated

globalContext->isValid()	Description
TRUE	never evaluated
FALSE	never evaluated

770 qWarning("Warning: Setting a new default format with a different version or profile " -

771 "after the global shared context is created may cause issues with context " -

772 "sharing."); -

773

}

never executed: end of block

774

}

never executed: end of block

775 #endif -

776 *qt_default_surface_format() = format; -

777

}

never executed: end of block

778 -

779 /*! -

780 Returns the global default surface format. -

781 -

782 When setDefaultFormat() is not called, this is a default-constructed QSurfaceFormat. -

783 -

784 \since 5.4 -

785 \sa setDefaultFormat() -

786 */ -

787 QSurfaceFormat QSurfaceFormat::defaultFormat() -

788 { -

789

return *qt_default_surface_format();

never executed: return *qt_default_surface_format();

790 } -

791 -

792 /*! -

793 Returns \c true if all the options of the two QSurfaceFormat objects -

794 \a a and \a b are equal. -

795 -

796 \relates QSurfaceFormat -

797 */ -

798 bool operator==(const QSurfaceFormat& a, const QSurfaceFormat& b) -

799 { -

800

return (a.d == b.d) || ((int) a.d->opts == (int) b.d->opts

never executed:

return (a.d == b.d) || ((int) a.d->opts == (int) b.d->opts && a.d->stencilSize == b.d->stencilSize && a.d->redBufferSize == b.d->redBufferSize && a.d->greenBufferSize == b.d->greenBufferSize && a.d->blueBufferSize == b.d->blueBufferSize && a.d->alphaBuffe...ferSize && a.d->depthSize == b.d->depthSize && a.d->numSamples == b.d->numSamples && a.d->swapBehavior == b.d->swapBehavior && a.d->profile == b.d->profile && a.d->major == b.d->major && a.d->minor == b.d->minor && a.d->swapInterval == b.d->swapInterval);

801

&& a.d->stencilSize == b.d->stencilSize

never executed:

return (a.d == b.d) || ((int) a.d->opts == (int) b.d->opts && a.d->stencilSize == b.d->stencilSize && a.d->redBufferSize == b.d->redBufferSize && a.d->greenBufferSize == b.d->greenBufferSize && a.d->blueBufferSize == b.d->blueBufferSize && a.d->alphaBuffe...ferSize && a.d->depthSize == b.d->depthSize && a.d->numSamples == b.d->numSamples && a.d->swapBehavior == b.d->swapBehavior && a.d->profile == b.d->profile && a.d->major == b.d->major && a.d->minor == b.d->minor && a.d->swapInterval == b.d->swapInterval);

802

&& a.d->redBufferSize == b.d->redBufferSize

never executed:

return (a.d == b.d) || ((int) a.d->opts == (int) b.d->opts && a.d->stencilSize == b.d->stencilSize && a.d->redBufferSize == b.d->redBufferSize && a.d->greenBufferSize == b.d->greenBufferSize && a.d->blueBufferSize == b.d->blueBufferSize && a.d->alphaBuffe...ferSize && a.d->depthSize == b.d->depthSize && a.d->numSamples == b.d->numSamples && a.d->swapBehavior == b.d->swapBehavior && a.d->profile == b.d->profile && a.d->major == b.d->major && a.d->minor == b.d->minor && a.d->swapInterval == b.d->swapInterval);

803

&& a.d->greenBufferSize == b.d->greenBufferSize

never executed:

return (a.d == b.d) || ((int) a.d->opts == (int) b.d->opts && a.d->stencilSize == b.d->stencilSize && a.d->redBufferSize == b.d->redBufferSize && a.d->greenBufferSize == b.d->greenBufferSize && a.d->blueBufferSize == b.d->blueBufferSize && a.d->alphaBuffe...ferSize && a.d->depthSize == b.d->depthSize && a.d->numSamples == b.d->numSamples && a.d->swapBehavior == b.d->swapBehavior && a.d->profile == b.d->profile && a.d->major == b.d->major && a.d->minor == b.d->minor && a.d->swapInterval == b.d->swapInterval);

804

&& a.d->blueBufferSize == b.d->blueBufferSize

never executed:

return (a.d == b.d) || ((int) a.d->opts == (int) b.d->opts && a.d->stencilSize == b.d->stencilSize && a.d->redBufferSize == b.d->redBufferSize && a.d->greenBufferSize == b.d->greenBufferSize && a.d->blueBufferSize == b.d->blueBufferSize && a.d->alphaBuffe...ferSize && a.d->depthSize == b.d->depthSize && a.d->numSamples == b.d->numSamples && a.d->swapBehavior == b.d->swapBehavior && a.d->profile == b.d->profile && a.d->major == b.d->major && a.d->minor == b.d->minor && a.d->swapInterval == b.d->swapInterval);

805

&& a.d->alphaBufferSize == b.d->alphaBufferSize

never executed:

return (a.d == b.d) || ((int) a.d->opts == (int) b.d->opts && a.d->stencilSize == b.d->stencilSize && a.d->redBufferSize == b.d->redBufferSize && a.d->greenBufferSize == b.d->greenBufferSize && a.d->blueBufferSize == b.d->blueBufferSize && a.d->alphaBuffe...ferSize && a.d->depthSize == b.d->depthSize && a.d->numSamples == b.d->numSamples && a.d->swapBehavior == b.d->swapBehavior && a.d->profile == b.d->profile && a.d->major == b.d->major && a.d->minor == b.d->minor && a.d->swapInterval == b.d->swapInterval);

806

&& a.d->depthSize == b.d->depthSize

never executed:

return (a.d == b.d) || ((int) a.d->opts == (int) b.d->opts && a.d->stencilSize == b.d->stencilSize && a.d->redBufferSize == b.d->redBufferSize && a.d->greenBufferSize == b.d->greenBufferSize && a.d->blueBufferSize == b.d->blueBufferSize && a.d->alphaBuffe...ferSize && a.d->depthSize == b.d->depthSize && a.d->numSamples == b.d->numSamples && a.d->swapBehavior == b.d->swapBehavior && a.d->profile == b.d->profile && a.d->major == b.d->major && a.d->minor == b.d->minor && a.d->swapInterval == b.d->swapInterval);

807

&& a.d->numSamples == b.d->numSamples

never executed:

return (a.d == b.d) || ((int) a.d->opts == (int) b.d->opts && a.d->stencilSize == b.d->stencilSize && a.d->redBufferSize == b.d->redBufferSize && a.d->greenBufferSize == b.d->greenBufferSize && a.d->blueBufferSize == b.d->blueBufferSize && a.d->alphaBuffe...ferSize && a.d->depthSize == b.d->depthSize && a.d->numSamples == b.d->numSamples && a.d->swapBehavior == b.d->swapBehavior && a.d->profile == b.d->profile && a.d->major == b.d->major && a.d->minor == b.d->minor && a.d->swapInterval == b.d->swapInterval);

808

&& a.d->swapBehavior == b.d->swapBehavior

never executed:

return (a.d == b.d) || ((int) a.d->opts == (int) b.d->opts && a.d->stencilSize == b.d->stencilSize && a.d->redBufferSize == b.d->redBufferSize && a.d->greenBufferSize == b.d->greenBufferSize && a.d->blueBufferSize == b.d->blueBufferSize && a.d->alphaBuffe...ferSize && a.d->depthSize == b.d->depthSize && a.d->numSamples == b.d->numSamples && a.d->swapBehavior == b.d->swapBehavior && a.d->profile == b.d->profile && a.d->major == b.d->major && a.d->minor == b.d->minor && a.d->swapInterval == b.d->swapInterval);

809

&& a.d->profile == b.d->profile

never executed:

return (a.d == b.d) || ((int) a.d->opts == (int) b.d->opts && a.d->stencilSize == b.d->stencilSize && a.d->redBufferSize == b.d->redBufferSize && a.d->greenBufferSize == b.d->greenBufferSize && a.d->blueBufferSize == b.d->blueBufferSize && a.d->alphaBuffe...ferSize && a.d->depthSize == b.d->depthSize && a.d->numSamples == b.d->numSamples && a.d->swapBehavior == b.d->swapBehavior && a.d->profile == b.d->profile && a.d->major == b.d->major && a.d->minor == b.d->minor && a.d->swapInterval == b.d->swapInterval);

810

&& a.d->major == b.d->major

never executed:

return (a.d == b.d) || ((int) a.d->opts == (int) b.d->opts && a.d->stencilSize == b.d->stencilSize && a.d->redBufferSize == b.d->redBufferSize && a.d->greenBufferSize == b.d->greenBufferSize && a.d->blueBufferSize == b.d->blueBufferSize && a.d->alphaBuffe...ferSize && a.d->depthSize == b.d->depthSize && a.d->numSamples == b.d->numSamples && a.d->swapBehavior == b.d->swapBehavior && a.d->profile == b.d->profile && a.d->major == b.d->major && a.d->minor == b.d->minor && a.d->swapInterval == b.d->swapInterval);

811

&& a.d->minor == b.d->minor

never executed:

return (a.d == b.d) || ((int) a.d->opts == (int) b.d->opts && a.d->stencilSize == b.d->stencilSize && a.d->redBufferSize == b.d->redBufferSize && a.d->greenBufferSize == b.d->greenBufferSize && a.d->blueBufferSize == b.d->blueBufferSize && a.d->alphaBuffe...ferSize && a.d->depthSize == b.d->depthSize && a.d->numSamples == b.d->numSamples && a.d->swapBehavior == b.d->swapBehavior && a.d->profile == b.d->profile && a.d->major == b.d->major && a.d->minor == b.d->minor && a.d->swapInterval == b.d->swapInterval);

812

&& a.d->swapInterval == b.d->swapInterval);

never executed:

return (a.d == b.d) || ((int) a.d->opts == (int) b.d->opts && a.d->stencilSize == b.d->stencilSize && a.d->redBufferSize == b.d->redBufferSize && a.d->greenBufferSize == b.d->greenBufferSize && a.d->blueBufferSize == b.d->blueBufferSize && a.d->alphaBuffe...ferSize && a.d->depthSize == b.d->depthSize && a.d->numSamples == b.d->numSamples && a.d->swapBehavior == b.d->swapBehavior && a.d->profile == b.d->profile && a.d->major == b.d->major && a.d->minor == b.d->minor && a.d->swapInterval == b.d->swapInterval);

813 } -

814 -

815 /*! -

816 Returns \c false if all the options of the two QSurfaceFormat objects -

817 \a a and \a b are equal; otherwise returns \c true. -

818 -

819 \relates QSurfaceFormat -

820 */ -

821 bool operator!=(const QSurfaceFormat& a, const QSurfaceFormat& b) -

822 { -

823

return !(a == b);

never executed: return !(a == b);

824 } -

825 -

826 #ifndef QT_NO_DEBUG_STREAM -

827 QDebug operator<<(QDebug dbg, const QSurfaceFormat &f) -

828 { -

829 const QSurfaceFormatPrivate * const d = f.d; -

830 QDebugStateSaver saver(dbg); -

831 -

832 dbg.nospace() << "QSurfaceFormat(" -

833 << "version " << d->major << '.' << d->minor -

834 << ", options " << d->opts -

835 << ", depthBufferSize " << d->depthSize -

836 << ", redBufferSize " << d->redBufferSize -

837 << ", greenBufferSize " << d->greenBufferSize -

838 << ", blueBufferSize " << d->blueBufferSize -

839 << ", alphaBufferSize " << d->alphaBufferSize -

840 << ", stencilBufferSize " << d->stencilSize -

841 << ", samples " << d->numSamples -

842 << ", swapBehavior " << d->swapBehavior -

843 << ", swapInterval " << d->swapInterval -

844 << ", profile " << d->profile -

845 << ')'; -

846 -

847

return dbg;

never executed: return dbg;

848 } -

849 #endif -

850 -

851 QT_END_NAMESPACE -

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