Add QEGLContext::invalidateContext

QEGLContext::invalidateContext will mark that egl context is invalide
and trigger SceneGraph to destroy it, create a new one and re-create
and re-upload all resources (e.g. textures) associated with the current
state of the SceneGraph

In addition this change also improves
QEglFSWindow::invalidateSurface() and
QEglFSContext::eglSurfaceForPlatformSurface(..)

Where QEglFSWindow::invalidateSurface() will now destroy the
corresponding EGLSurface via eglDestroySurface, including "unbinding"
it from the current thread via eglMakeCurrent and
un-setting the screen's EGLSurface in case it's the same resource.

QEglFSContext::eglSurfaceForPlatformSurface(..) will now call
QEglFSWindow::resetSurface() in case of getting a EGL_NO_SURFACE
from the QEglFSWindow (which happens if above invalidateSurface()
was called before) - therefor re-creating the resource if
it was destoyed via QEglFSWindow::invalidateSurface()

Pick-to: 6.5
Change-Id: I37badd1fc11e993c395fb1502e9bd27ebe18b821
Reviewed-by: Laszlo Agocs <[email protected]>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/gui/kernel/qopenglcontext_platform.h b/src/gui/kernel/qopenglcontext_platform.h
index fe36478a653..1f84cf6ce3c 100644
--- a/src/gui/kernel/qopenglcontext_platform.h
+++ b/src/gui/kernel/qopenglcontext_platform.h
@@ -79,6 +79,8 @@ struct Q_GUI_EXPORT QEGLContext
     virtual EGLContext nativeContext() const = 0;
     virtual EGLConfig config() const = 0;
     virtual EGLDisplay display() const = 0;
+
+    virtual void invalidateContext() = 0;
 };
 #endif