plugins/screencast: make context current later, don't make it current twice

src/plugins/screencast/screencaststream.cpp

@@ -354,9 +354,6 @@ bool ScreenCastStream::createStream()
 
     if (m_cursor.mode == KWaylandServer::ScreencastV1Interface::Embedded) {
         connect(Cursors::self(), &Cursors::positionChanged, this, [this] {
-            if (auto scene = Compositor::self()->scene()) {
-                scene->makeOpenGLContextCurrent();
-            }
             recordFrame({});
         });
     } else if (m_cursor.mode == KWaylandServer::ScreencastV1Interface::Metadata) {
@@ -379,7 +376,6 @@ void ScreenCastStream::stop()
 
 void ScreenCastStream::recordFrame(const QRegion &_damagedRegion)
 {
-    static_cast<OpenGLBackend *>(Compositor::self()->backend())->makeCurrent();
     QRegion damagedRegion = _damagedRegion;
     Q_ASSERT(!m_stopped);
 
@@ -428,6 +424,7 @@ void ScreenCastStream::recordFrame(const QRegion &_damagedRegion)
     }
 
     spa_data->chunk->offset = 0;
+    static_cast<OpenGLBackend *>(Compositor::self()->backend())->makeCurrent();
     if (data || spa_data[0].type == SPA_DATA_MemFd) {
         const bool hasAlpha = m_source->hasAlphaChannel();
         const int bpp = data && !hasAlpha ? 3 : 4;