static QEglContext *createContext(QPaintDevice *device)
{
QEglContext *context;
// Create the context object and open the display.
context = new QEglContext();
context->setApi(QEgl::OpenVG);
if (!context->openDisplay(device)) {
delete context;
return 0;
}
// Set the swap interval for the display.
QByteArray interval = qgetenv("QT_VG_SWAP_INTERVAL");
if (!interval.isEmpty())
eglSwapInterval(context->display(), interval.toInt());
else
eglSwapInterval(context->display(), 1);
// Choose an appropriate configuration for rendering into the device.
QEglProperties configProps;
configProps.setPaintDeviceFormat(device);
int redSize = configProps.value(EGL_RED_SIZE);
if (redSize == EGL_DONT_CARE || redSize == 0)
configProps.setPixelFormat(QImage::Format_ARGB32); // XXX
#ifndef QVG_SCISSOR_CLIP
// If we are using the mask to clip, then explicitly request a mask.
configProps.setValue(EGL_ALPHA_MASK_SIZE, 1);
#endif
#ifdef EGL_VG_ALPHA_FORMAT_PRE_BIT
configProps.setValue(EGL_SURFACE_TYPE, EGL_WINDOW_BIT | EGL_PBUFFER_BIT |
EGL_VG_ALPHA_FORMAT_PRE_BIT);
configProps.setRenderableType(QEgl::OpenVG);
if (!context->chooseConfig(configProps)) {
// Try again without the "pre" bit.
configProps.setValue(EGL_SURFACE_TYPE, EGL_WINDOW_BIT | EGL_PBUFFER_BIT);
if (!context->chooseConfig(configProps)) {
delete context;
return 0;
}
}
#else
configProps.setValue(EGL_SURFACE_TYPE, EGL_WINDOW_BIT | EGL_PBUFFER_BIT);
configProps.setRenderableType(QEgl::OpenVG);
if (!context->chooseConfig(configProps)) {
delete context;
return 0;
}
#endif
// Construct a new EGL context for the selected configuration.
if (!context->createContext()) {
delete context;
return 0;
}
return context;
}
bool QGLContext::chooseContext(const QGLContext* shareContext)
{
Q_D(QGLContext);
if (!device())
return false;
int devType = device()->devType();
// Get the display and initialize it.
d->eglContext = new QEglContext();
d->eglContext->setApi(QEglContext::OpenGL);
if (!d->eglContext->openDisplay(device())) {
delete d->eglContext;
d->eglContext = 0;
return false;
}
// Construct the configuration we need for this surface.
QEglProperties configProps;
qt_egl_set_format(configProps, devType, d->glFormat);
qt_egl_add_platform_config(configProps, device());
configProps.setRenderableType(QEglContext::OpenGL);
// Search for a matching configuration, reducing the complexity
// each time until we get something that matches.
if (!d->eglContext->chooseConfig(configProps, QEglContext::BestPixelFormat)) {
delete d->eglContext;
d->eglContext = 0;
return false;
}
// Inform the higher layers about the actual format properties.
qt_egl_update_format(*(d->eglContext), d->glFormat);
// Create a new context for the configuration.
if (!d->eglContext->createContext
(shareContext ? shareContext->d_func()->eglContext : 0)) {
delete d->eglContext;
d->eglContext = 0;
return false;
}
#if defined(EGL_VERSION_1_1)
if (d->glFormat.swapInterval() != -1 && devType == QInternal::Widget)
eglSwapInterval(d->eglContext->display(), d->glFormat.swapInterval());
#endif
// Create the EGL surface to draw into.
if (!d->eglContext->createSurface(device())) {
delete d->eglContext;
d->eglContext = 0;
return false;
}
return true;
}
bool QGLPixelBuffer::hasOpenGLPbuffers()
{
// See if we have at least 1 configuration that matches the default format.
QEglContext ctx;
if (!ctx.openDisplay(0))
return false;
QEglProperties configProps;
qt_egl_set_format(configProps, QInternal::Pbuffer, QGLFormat::defaultFormat());
configProps.setRenderableType(QEglContext::OpenGL);
return ctx.chooseConfig(configProps);
}
bool QGLPixelBuffer::hasOpenGLPbuffers()
{
// See if we have at least 1 configuration that matches the default format.
EGLDisplay dpy = QEgl::display();
if (dpy == EGL_NO_DISPLAY)
return false;
QEglProperties configProps;
qt_eglproperties_set_glformat(configProps, QGLFormat::defaultFormat());
configProps.setDeviceType(QInternal::Pbuffer);
configProps.setRenderableType(QEgl::OpenGL);
do {
EGLConfig cfg = 0;
EGLint matching = 0;
if (eglChooseConfig(dpy, configProps.properties(),
&cfg, 1, &matching) && matching > 0)
return true;
} while (configProps.reduceConfiguration());
return false;
}
bool QGLContext::chooseContext(const QGLContext* shareContext)
{
Q_D(QGLContext);
// Validate the device.
if (!device())
return false;
int devType = device()->devType();
if (devType != QInternal::Pixmap && devType != QInternal::Image && devType != QInternal::Widget) {
qWarning("QGLContext::chooseContext(): Cannot create QGLContext's for paint device type %d", devType);
return false;
}
// Get the display and initialize it.
d->eglContext = new QEglContext();
d->eglContext->setApi(QEgl::OpenGL);
if (!d->eglContext->openDisplay(device())) {
delete d->eglContext;
d->eglContext = 0;
return false;
}
// Construct the configuration we need for this surface.
QEglProperties configProps;
qt_egl_add_platform_config(configProps, device());
qt_egl_set_format(configProps, devType, d->glFormat);
configProps.setRenderableType(QEgl::OpenGL);
// Search for a matching configuration, reducing the complexity
// each time until we get something that matches.
if (!d->eglContext->chooseConfig(configProps)) {
delete d->eglContext;
d->eglContext = 0;
return false;
}
// Inform the higher layers about the actual format properties.
qt_egl_update_format(*(d->eglContext), d->glFormat);
// Create a new context for the configuration.
if (!d->eglContext->createContext
(shareContext ? shareContext->d_func()->eglContext : 0)) {
delete d->eglContext;
d->eglContext = 0;
return false;
}
d->sharing = d->eglContext->isSharing();
if (d->sharing && shareContext)
const_cast<QGLContext *>(shareContext)->d_func()->sharing = true;
#if defined(EGL_VERSION_1_1)
if (d->glFormat.swapInterval() != -1 && devType == QInternal::Widget)
eglSwapInterval(d->eglContext->display(), d->glFormat.swapInterval());
#endif
// Create the EGL surface to draw into. We cannot use
// QEglContext::createSurface() because it does not have
// access to the QGLScreen.
d->eglSurface = qt_egl_create_surface(d->eglContext, device());
if (d->eglSurface == EGL_NO_SURFACE) {
delete d->eglContext;
d->eglContext = 0;
return false;
}
return true;
}
EGLConfig QEgl::defaultConfig(int devType, API api, ConfigOptions options)
{
if ( (devType != QInternal::Pixmap) && ((options & Renderable) == 0))
qWarning("QEgl::defaultConfig() - Only configs for pixmaps make sense to be read-only!");
EGLConfig* targetConfig = 0;
static EGLConfig defaultVGConfigs[] = {
QEGL_NO_CONFIG, // 0 Window Renderable Translucent
QEGL_NO_CONFIG, // 1 Window Renderable Opaque
QEGL_NO_CONFIG, // 2 Pixmap Renderable Translucent
QEGL_NO_CONFIG, // 3 Pixmap Renderable Opaque
QEGL_NO_CONFIG, // 4 Pixmap ReadOnly Translucent
QEGL_NO_CONFIG // 5 Pixmap ReadOnly Opaque
};
if (api == OpenVG) {
if (devType == QInternal::Widget) {
if (options & Translucent)
targetConfig = &(defaultVGConfigs[0]);
else
targetConfig = &(defaultVGConfigs[1]);
} else if (devType == QInternal::Pixmap) {
if (options & Renderable) {
if (options & Translucent)
targetConfig = &(defaultVGConfigs[2]);
else // Opaque
targetConfig = &(defaultVGConfigs[3]);
} else { // Read-only
if (options & Translucent)
targetConfig = &(defaultVGConfigs[4]);
else // Opaque
targetConfig = &(defaultVGConfigs[5]);
}
}
}
static EGLConfig defaultGLConfigs[] = {
QEGL_NO_CONFIG, // 0 Window Renderable Translucent
QEGL_NO_CONFIG, // 1 Window Renderable Opaque
QEGL_NO_CONFIG, // 2 PBuffer Renderable Translucent
QEGL_NO_CONFIG, // 3 PBuffer Renderable Opaque
QEGL_NO_CONFIG, // 4 Pixmap Renderable Translucent
QEGL_NO_CONFIG, // 5 Pixmap Renderable Opaque
QEGL_NO_CONFIG, // 6 Pixmap ReadOnly Translucent
QEGL_NO_CONFIG // 7 Pixmap ReadOnly Opaque
};
if (api == OpenGL) {
if (devType == QInternal::Widget) {
if (options & Translucent)
targetConfig = &(defaultGLConfigs[0]);
else // Opaque
targetConfig = &(defaultGLConfigs[1]);
} else if (devType == QInternal::Pbuffer) {
if (options & Translucent)
targetConfig = &(defaultGLConfigs[2]);
else // Opaque
targetConfig = &(defaultGLConfigs[3]);
} else if (devType == QInternal::Pixmap) {
if (options & Renderable) {
if (options & Translucent)
targetConfig = &(defaultGLConfigs[4]);
else // Opaque
targetConfig = &(defaultGLConfigs[5]);
} else { // ReadOnly
if (options & Translucent)
targetConfig = &(defaultGLConfigs[6]);
else // Opaque
targetConfig = &(defaultGLConfigs[7]);
}
}
}
if (!targetConfig) {
qWarning("QEgl::defaultConfig() - No default config for device/api/options combo");
return QEGL_NO_CONFIG;
}
if (*targetConfig != QEGL_NO_CONFIG)
return *targetConfig;
// We haven't found an EGL config for the target config yet, so do it now:
// Allow overriding from an environment variable:
QByteArray configId;
if (api == OpenVG)
configId = qgetenv("QT_VG_EGL_CONFIG");
else
configId = qgetenv("QT_GL_EGL_CONFIG");
if (!configId.isEmpty()) {
// Overridden, so get the EGLConfig for the specified config ID:
EGLint properties[] = {
EGL_CONFIG_ID, (EGLint)configId.toInt(),
EGL_NONE
};
EGLint configCount = 0;
eglChooseConfig(display(), properties, targetConfig, 1, &configCount);
if (configCount > 0)
return *targetConfig;
qWarning() << "QEgl::defaultConfig() -" << configId << "appears to be invalid";
}
QEglProperties configAttribs;
configAttribs.setRenderableType(api);
EGLint surfaceType;
switch (devType) {
case QInternal::Widget:
surfaceType = EGL_WINDOW_BIT;
break;
case QInternal::Pixmap:
surfaceType = EGL_PIXMAP_BIT;
break;
case QInternal::Pbuffer:
surfaceType = EGL_PBUFFER_BIT;
break;
default:
qWarning("QEgl::defaultConfig() - Can't create EGL surface for %d device type", devType);
return QEGL_NO_CONFIG;
};
#ifdef EGL_VG_ALPHA_FORMAT_PRE_BIT
// For OpenVG, we try to create a surface using a pre-multiplied format if
// the surface needs to have an alpha channel:
if (api == OpenVG && (options & Translucent))
surfaceType |= EGL_VG_ALPHA_FORMAT_PRE_BIT;
#endif
configAttribs.setValue(EGL_SURFACE_TYPE, surfaceType);
#ifdef EGL_BIND_TO_TEXTURE_RGBA
if (devType == QInternal::Pixmap || devType == QInternal::Pbuffer) {
if (options & Translucent)
configAttribs.setValue(EGL_BIND_TO_TEXTURE_RGBA, EGL_TRUE);
else
configAttribs.setValue(EGL_BIND_TO_TEXTURE_RGB, EGL_TRUE);
}
#endif
// Add paint engine requirements
if (api == OpenVG) {
#if !defined(QVG_SCISSOR_CLIP) && defined(EGL_ALPHA_MASK_SIZE)
configAttribs.setValue(EGL_ALPHA_MASK_SIZE, 1);
#endif
} else {
// Both OpenGL paint engines need to have stencil and sample buffers
configAttribs.setValue(EGL_STENCIL_SIZE, 1);
configAttribs.setValue(EGL_SAMPLE_BUFFERS, 1);
#ifndef QT_OPENGL_ES_2
// Additionally, the GL1 engine likes to have a depth buffer for clipping
configAttribs.setValue(EGL_DEPTH_SIZE, 1);
#endif
}
if (options & Translucent)
configAttribs.setValue(EGL_ALPHA_SIZE, 1);
*targetConfig = chooseConfig(&configAttribs, QEgl::BestPixelFormat);
return *targetConfig;
}
static QEglContext *createContext(QPaintDevice *device)
{
QEglContext *context;
// Create the context object and open the display.
context = new QEglContext();
context->setApi(QEgl::OpenVG);
// Set the swap interval for the display.
QByteArray interval = qgetenv("QT_VG_SWAP_INTERVAL");
if (!interval.isEmpty())
eglSwapInterval(QEgl::display(), interval.toInt());
else
eglSwapInterval(QEgl::display(), 1);
#ifdef EGL_RENDERABLE_TYPE
// Has the user specified an explicit EGL configuration to use?
QByteArray configId = qgetenv("QT_VG_EGL_CONFIG");
if (!configId.isEmpty()) {
EGLint cfgId = configId.toInt();
EGLint properties[] = {
EGL_CONFIG_ID, cfgId,
EGL_NONE
};
EGLint matching = 0;
EGLConfig cfg;
if (eglChooseConfig
(QEgl::display(), properties, &cfg, 1, &matching) &&
matching > 0) {
// Check that the selected configuration actually supports OpenVG
// and then create the context with it.
EGLint id = 0;
EGLint type = 0;
eglGetConfigAttrib
(QEgl::display(), cfg, EGL_CONFIG_ID, &id);
eglGetConfigAttrib
(QEgl::display(), cfg, EGL_RENDERABLE_TYPE, &type);
if (cfgId == id && (type & EGL_OPENVG_BIT) != 0) {
context->setConfig(cfg);
if (!context->createContext()) {
delete context;
return 0;
}
return context;
} else {
qWarning("QT_VG_EGL_CONFIG: %d is not a valid OpenVG configuration", int(cfgId));
}
}
}
#endif
// Choose an appropriate configuration for rendering into the device.
QEglProperties configProps;
configProps.setPaintDeviceFormat(device);
int redSize = configProps.value(EGL_RED_SIZE);
if (redSize == EGL_DONT_CARE || redSize == 0)
configProps.setPixelFormat(QImage::Format_ARGB32); // XXX
#ifndef QVG_SCISSOR_CLIP
// If we are using the mask to clip, then explicitly request a mask.
configProps.setValue(EGL_ALPHA_MASK_SIZE, 1);
#endif
#ifdef EGL_VG_ALPHA_FORMAT_PRE_BIT
configProps.setValue(EGL_SURFACE_TYPE, EGL_WINDOW_BIT |
EGL_VG_ALPHA_FORMAT_PRE_BIT);
configProps.setRenderableType(QEgl::OpenVG);
if (!context->chooseConfig(configProps)) {
// Try again without the "pre" bit.
configProps.setValue(EGL_SURFACE_TYPE, EGL_WINDOW_BIT);
if (!context->chooseConfig(configProps)) {
delete context;
return 0;
}
}
#else
configProps.setValue(EGL_SURFACE_TYPE, EGL_WINDOW_BIT);
configProps.setRenderableType(QEgl::OpenVG);
if (!context->chooseConfig(configProps)) {
delete context;
return 0;
}
#endif
// Construct a new EGL context for the selected configuration.
if (!context->createContext()) {
delete context;
return 0;
}
return context;
}
// Chooses the EGL config and creates the EGL context
bool QGLContext::chooseContext(const QGLContext* shareContext) // almost same as in qgl_x11egl.cpp
{
Q_D(QGLContext);
if (!device())
return false;
int devType = device()->devType();
if ((devType != QInternal::Widget) && (devType != QInternal::Pbuffer)) {
qWarning("WARNING: Creating a QGLContext not supported on device type %d", devType);
return false;
}
// Get the display and initialize it.
if (d->eglContext == 0) {
d->eglContext = new QEglContext();
d->ownsEglContext = true;
d->eglContext->setApi(QEgl::OpenGL);
if (d->glFormat.samples() == EGL_DONT_CARE) {
// Allow apps to override ability to use multisampling by setting an environment variable. Eg:
// qputenv("QT_SYMBIAN_DISABLE_GL_MULTISAMPLE", "1");
// Added to allow camera app to start with limited memory.
if (!QSymbianGraphicsSystemEx::hasBCM2727() && !qgetenv("QT_SYMBIAN_DISABLE_GL_MULTISAMPLE").toInt()) {
// Most likely we have hw support for multisampling
// so let's enable it.
d->glFormat.setSampleBuffers(1);
d->glFormat.setSamples(4);
} else {
d->glFormat.setSampleBuffers(0);
d->glFormat.setSamples(0);
}
}
// If the device is a widget with WA_TranslucentBackground set, make sure the glFormat
// has the alpha channel option set:
if (devType == QInternal::Widget) {
QWidget* widget = static_cast<QWidget*>(device());
if (widget->testAttribute(Qt::WA_TranslucentBackground))
d->glFormat.setAlpha(true);
}
// Construct the configuration we need for this surface.
QEglProperties configProps;
configProps.setDeviceType(devType);
configProps.setPaintDeviceFormat(device());
configProps.setRenderableType(QEgl::OpenGL);
configProps.setValue(EGL_SURFACE_TYPE, EGL_WINDOW_BIT|EGL_SWAP_BEHAVIOR_PRESERVED_BIT);
qt_eglproperties_set_glformat(configProps, d->glFormat);
if (!d->eglContext->chooseConfig(configProps, QEgl::BestPixelFormat)) {
delete d->eglContext;
d->eglContext = 0;
return false;
}
// Create a new context for the configuration.
QEglContext* eglSharedContext = shareContext ? shareContext->d_func()->eglContext : 0;
if (!d->eglContext->createContext(eglSharedContext)) {
delete d->eglContext;
d->eglContext = 0;
return false;
}
d->sharing = d->eglContext->isSharing();
if (d->sharing && shareContext)
const_cast<QGLContext *>(shareContext)->d_func()->sharing = true;
}
// Inform the higher layers about the actual format properties
qt_glformat_from_eglconfig(d->glFormat, d->eglContext->config());
// Do don't create the EGLSurface for everything.
// QWidget - yes, create the EGLSurface and store it in QGLContextPrivate::eglSurface
// QGLWidget - yes, create the EGLSurface and store it in QGLContextPrivate::eglSurface
// QGLPixelBuffer - no, it creates the surface itself and stores it in QGLPixelBufferPrivate::pbuf
if (devType == QInternal::Widget) {
if (d->eglSurface != EGL_NO_SURFACE)
eglDestroySurface(d->eglContext->display(), d->eglSurface);
d->eglSurface = QEgl::createSurface(device(), d->eglContext->config());
eglGetError(); // Clear error state first.
#ifdef QGL_NO_PRESERVED_SWAP
eglSurfaceAttrib(QEgl::display(), d->eglSurface,
EGL_SWAP_BEHAVIOR, EGL_BUFFER_DESTROYED);
if (eglGetError() != EGL_SUCCESS)
qWarning("QGLContext: could not enable destroyed swap behaviour");
#else
eglSurfaceAttrib(QEgl::display(), d->eglSurface,
EGL_SWAP_BEHAVIOR, EGL_BUFFER_PRESERVED);
if (eglGetError() != EGL_SUCCESS)
qWarning("QGLContext: could not enable preserved swap behaviour");
#endif
setWindowCreated(true);
}
return true;
}
QT_BEGIN_NAMESPACE
#ifdef EGL_BIND_TO_TEXTURE_RGBA
#define QGL_RENDER_TEXTURE 1
#else
#define QGL_RENDER_TEXTURE 0
#endif
bool QGLPixelBufferPrivate::init(const QSize &size, const QGLFormat &f, QGLWidget *shareWidget)
{
// Create the EGL context.
ctx = new QEglContext();
ctx->setApi(QEglContext::OpenGL);
// Open the EGL display.
if (!ctx->openDisplay(0)) {
delete ctx;
ctx = 0;
return false;
}
// Choose an appropriate configuration. We use the best format
// we can find, even if it is greater than the requested format.
// We try for a pbuffer that is capable of texture rendering if possible.
QEglProperties configProps;
qt_egl_set_format(configProps, QInternal::Pbuffer, f);
configProps.setRenderableType(ctx->api());
bool ok = false;
#if QGL_RENDER_TEXTURE
textureFormat = EGL_TEXTURE_RGBA;
configProps.setValue(EGL_BIND_TO_TEXTURE_RGBA, EGL_TRUE);
ok = ctx->chooseConfig(configProps, QEglContext::BestPixelFormat);
if (!ok) {
// Try again with RGB texture rendering.
textureFormat = EGL_TEXTURE_RGB;
configProps.removeValue(EGL_BIND_TO_TEXTURE_RGBA);
configProps.setValue(EGL_BIND_TO_TEXTURE_RGB, EGL_TRUE);
ok = ctx->chooseConfig(configProps, QEglContext::BestPixelFormat);
if (!ok) {
// One last try for a pbuffer with no texture rendering.
configProps.removeValue(EGL_BIND_TO_TEXTURE_RGB);
textureFormat = EGL_NONE;
}
}
#else
textureFormat = EGL_NONE;
#endif
if (!ok) {
if (!ctx->chooseConfig(configProps, QEglContext::BestPixelFormat)) {
delete ctx;
ctx = 0;
return false;
}
}
// Retrieve the actual format properties.
qt_egl_update_format(*ctx, format);
// Create the attributes needed for the pbuffer.
QEglProperties attribs;
attribs.setValue(EGL_WIDTH, size.width());
attribs.setValue(EGL_HEIGHT, size.height());
#if QGL_RENDER_TEXTURE
if (textureFormat != EGL_NONE) {
attribs.setValue(EGL_TEXTURE_FORMAT, textureFormat);
attribs.setValue(EGL_TEXTURE_TARGET, EGL_TEXTURE_2D);
}
#endif
// Create the pbuffer surface.
pbuf = eglCreatePbufferSurface(ctx->display(), ctx->config(), attribs.properties());
#if QGL_RENDER_TEXTURE
if (pbuf == EGL_NO_SURFACE && textureFormat != EGL_NONE) {
// Try again with texture rendering disabled.
textureFormat = EGL_NONE;
attribs.removeValue(EGL_TEXTURE_FORMAT);
attribs.removeValue(EGL_TEXTURE_TARGET);
pbuf = eglCreatePbufferSurface(ctx->display(), ctx->config(), attribs.properties());
}
#endif
if (pbuf == EGL_NO_SURFACE) {
qWarning() << "QGLPixelBufferPrivate::init(): Unable to create EGL pbuffer surface:" << QEglContext::errorString(eglGetError());
return false;
}
ctx->setSurface(pbuf);
// Create a new context for the configuration.
QEglContext *shareContext = 0;
if (shareWidget && shareWidget->d_func()->glcx)
shareContext = shareWidget->d_func()->glcx->d_func()->eglContext;
if (!ctx->createContext(shareContext)) {
delete ctx;
ctx = 0;
return false;
}
return true;
}
// Chooses the EGL config and creates the EGL context
bool QGLContext::chooseContext(const QGLContext* shareContext)
{
Q_D(QGLContext);
if (!device())
return false;
int devType = device()->devType();
QX11PixmapData *x11PixmapData = 0;
if (devType == QInternal::Pixmap) {
QPixmapData *pmd = static_cast<QPixmap*>(device())->data_ptr().data();
if (pmd->classId() == QPixmapData::X11Class)
x11PixmapData = static_cast<QX11PixmapData*>(pmd);
else {
// TODO: Replace the pixmap's data with a new QX11PixmapData
qWarning("WARNING: Creating a QGLContext on a QPixmap is only supported for X11 pixmap backend");
return false;
}
} else if ((devType != QInternal::Widget) && (devType != QInternal::Pbuffer)) {
qWarning("WARNING: Creating a QGLContext not supported on device type %d", devType);
return false;
}
// Only create the eglContext if we don't already have one:
if (d->eglContext == 0) {
d->eglContext = new QEglContext();
d->ownsEglContext = true;
d->eglContext->setApi(QEgl::OpenGL);
// If the device is a widget with WA_TranslucentBackground set, make sure the glFormat
// has the alpha channel option set:
if (devType == QInternal::Widget) {
QWidget* widget = static_cast<QWidget*>(device());
if (widget->testAttribute(Qt::WA_TranslucentBackground))
d->glFormat.setAlpha(true);
}
// Construct the configuration we need for this surface.
QEglProperties configProps;
configProps.setDeviceType(devType);
configProps.setRenderableType(QEgl::OpenGL);
qt_eglproperties_set_glformat(configProps, d->glFormat);
// Set buffer preserved for regular QWidgets, QGLWidgets are ok with either preserved or destroyed:
if ((devType == QInternal::Widget) && qobject_cast<QGLWidget*>(static_cast<QWidget*>(device())) == 0)
configProps.setValue(EGL_SWAP_BEHAVIOR, EGL_BUFFER_PRESERVED);
if (!d->eglContext->chooseConfig(configProps, QEgl::BestPixelFormat)) {
delete d->eglContext;
d->eglContext = 0;
return false;
}
// Create a new context for the configuration.
QEglContext* eglSharedContext = shareContext ? shareContext->d_func()->eglContext : 0;
if (!d->eglContext->createContext(eglSharedContext)) {
delete d->eglContext;
d->eglContext = 0;
return false;
}
d->sharing = d->eglContext->isSharing();
if (d->sharing && shareContext)
const_cast<QGLContext *>(shareContext)->d_func()->sharing = true;
}
// Inform the higher layers about the actual format properties
qt_glformat_from_eglconfig(d->glFormat, d->eglContext->config());
// Do don't create the EGLSurface for everything.
// QWidget - yes, create the EGLSurface and store it in QGLContextPrivate::eglSurface
// QGLWidget - yes, create the EGLSurface and store it in QGLContextPrivate::eglSurface
// QPixmap - yes, create the EGLSurface but store it in QX11PixmapData::gl_surface
// QGLPixelBuffer - no, it creates the surface itself and stores it in QGLPixelBufferPrivate::pbuf
if (devType == QInternal::Widget) {
if (d->eglSurface != EGL_NO_SURFACE)
eglDestroySurface(d->eglContext->display(), d->eglSurface);
// extraWindowSurfaceCreationProps default to NULL unless were specifically set before
d->eglSurface = QEgl::createSurface(device(), d->eglContext->config(), d->extraWindowSurfaceCreationProps);
XFlush(X11->display);
setWindowCreated(true);
}
if (x11PixmapData) {
// TODO: Actually check to see if the existing surface can be re-used
if (x11PixmapData->gl_surface)
eglDestroySurface(d->eglContext->display(), (EGLSurface)x11PixmapData->gl_surface);
x11PixmapData->gl_surface = (void*)QEgl::createSurface(device(), d->eglContext->config());
}
return true;
}
