migrate pyqt5 to pyside6

apps/studio/tests/test_scene3d_gl_smoke.py

@@ -94,15 +94,16 @@ def _render(widget, qt_app) -> np.ndarray:
     on a little-endian machine, with a stride that can exceed the width — so the
     conversion and the stride trim are both load-bearing.
     """
-    from PyQt5.QtGui import QImage
+    from PySide6.QtGui import QImage
 
     widget.repaint()
     qt_app.processEvents()
     image = widget.grabFramebuffer()
     assert not image.isNull(), "Qt returned no framebuffer"
-    image = image.convertToFormat(QImage.Format_RGB888)
+    image = image.convertToFormat(QImage.Format.Format_RGB888)
     width, height = image.width(), image.height()
-    buffer = image.constBits().asarray(image.byteCount())
+    # PySide6 returns a `memoryview` from constBits(), not a QByteArray: wrap it directly.
+    buffer = np.frombuffer(image.constBits(), dtype=np.uint8)
     stride = image.bytesPerLine()
     rows = np.frombuffer(buffer, dtype=np.uint8).reshape(height, stride)
     return rows[:, : width * 3].reshape(height, width, 3).copy()