void QVGPixmapData::destroyImageAndContext()
{
if (vgImage != VG_INVALID_HANDLE) {
// We need to have a context current to destroy the image.
#if !defined(QT_NO_EGL)
if (context->isCurrent()) {
destroyImages();
} else {
// We don't currently have a widget surface active, but we
// need a surface to make the context current. So use the
// shared pbuffer surface instead.
context->makeCurrent(qt_vg_shared_surface());
destroyImages();
context->lazyDoneCurrent();
}
#else
destroyImages();
#endif
}
#if !defined(QT_NO_EGL)
if (context) {
qt_vg_destroy_context(context, QInternal::Pixmap);
context = 0;
}
#endif
recreate = true;
}
QVGEGLWindowSurfaceDirect::~QVGEGLWindowSurfaceDirect()
{
destroyPaintEngine();
if (context) {
if (windowSurface != EGL_NO_SURFACE)
context->destroySurface(windowSurface);
qt_vg_destroy_context(context, QInternal::Widget);
}
}
QVGEGLWindowSurfaceVGImage::~QVGEGLWindowSurfaceVGImage()
{
destroyPaintEngine();
if (context) {
if (backBufferSurface != EGL_NO_SURFACE) {
// We need a current context to be able to destroy the image.
// We use the shared surface because the native window handle
// associated with "windowSurface" may have been destroyed already.
context->makeCurrent(qt_vg_shared_surface());
context->destroySurface(backBufferSurface);
vgDestroyImage(backBuffer);
context->doneCurrent();
}
if (windowSurface != EGL_NO_SURFACE)
context->destroySurface(windowSurface);
qt_vg_destroy_context(context, QInternal::Widget);
}
}
QEglContext *QVGEGLWindowSurfaceDirect::ensureContext(QWidget *widget)
{
QSize newSize = windowSurfaceSize(widget);
QEglProperties surfaceProps;
#if defined(QVG_RECREATE_ON_SIZE_CHANGE)
#if !defined(QVG_NO_SINGLE_CONTEXT)
if (context && size != newSize) {
// The surface size has changed, so we need to recreate it.
// We can keep the same context and paint engine.
size = newSize;
if (isPaintingActive)
context->doneCurrent();
context->destroySurface(windowSurface);
#if defined(EGL_VG_ALPHA_FORMAT_PRE_BIT)
if (isPremultipliedContext(context)) {
surfaceProps.setValue
(EGL_VG_ALPHA_FORMAT, EGL_VG_ALPHA_FORMAT_PRE);
} else {
surfaceProps.removeValue(EGL_VG_ALPHA_FORMAT);
}
#endif
windowSurface = context->createSurface(widget, &surfaceProps);
isPaintingActive = false;
needToSwap = true;
}
#else
if (context && size != newSize) {
// The surface size has changed, so we need to recreate
// the EGL context for the widget. We also need to recreate
// the surface's paint engine if context sharing is not
// enabled because we cannot reuse the existing paint objects
// in the new context.
qt_vg_destroy_paint_engine(engine);
engine = 0;
context->destroySurface(windowSurface);
qt_vg_destroy_context(context, QInternal::Widget);
context = 0;
windowSurface = EGL_NO_SURFACE;
}
#endif
#endif
if (!context) {
// Create a new EGL context and bind it to the widget surface.
size = newSize;
context = qt_vg_create_context(widget, QInternal::Widget);
if (!context)
return 0;
// We want a direct to window rendering surface if possible.
#if defined(QVG_DIRECT_TO_WINDOW)
surfaceProps.setValue(EGL_RENDER_BUFFER, EGL_SINGLE_BUFFER);
#endif
#if defined(EGL_VG_ALPHA_FORMAT_PRE_BIT)
if (isPremultipliedContext(context)) {
surfaceProps.setValue
(EGL_VG_ALPHA_FORMAT, EGL_VG_ALPHA_FORMAT_PRE);
} else {
surfaceProps.removeValue(EGL_VG_ALPHA_FORMAT);
}
#endif
EGLSurface surface = context->createSurface(widget, &surfaceProps);
if (surface == EGL_NO_SURFACE) {
qt_vg_destroy_context(context, QInternal::Widget);
context = 0;
return 0;
}
needToSwap = true;
#if defined(QVG_DIRECT_TO_WINDOW)
// Did we get a direct to window rendering surface?
EGLint buffer = 0;
if (eglQueryContext(QEgl::display(), context->context(),
EGL_RENDER_BUFFER, &buffer) &&
buffer == EGL_SINGLE_BUFFER) {
needToSwap = false;
}
#endif
windowSurface = surface;
isPaintingActive = false;
}
#if !defined(QVG_NO_PRESERVED_SWAP)
// Try to force the surface back buffer to preserve its contents.
if (needToSwap) {
eglGetError(); // Clear error state first.
eglSurfaceAttrib(QEgl::display(), windowSurface,
EGL_SWAP_BEHAVIOR, EGL_BUFFER_PRESERVED);
if (eglGetError() != EGL_SUCCESS) {
qWarning("QVG: could not enable preserved swap");
}
}
#endif
return context;
}