UseFXAAOn causes black render window in Qt embedded VTKRenderWindowInteractor
Preamble: I am not a professional programmer, so I do not have detailled knowledge of everything going on under the hood.
On Python, using VTK 9.2.6 together with PyQt5 5.15.9 I get a black render window when
self.ren.UseFXAAOn()
There is a minimal working example here:
Click to expand
import sys import vtk from PyQt5 import Qt from vtk.qt.QVTKRenderWindowInteractor import QVTKRenderWindowInteractorclass MainWindow(Qt.QMainWindow):
def __init__(self, parent=None):
Qt.QMainWindow.__init__(self, parent)
self.frame = Qt.QFrame()
self.vl = Qt.QVBoxLayout()
self.vtkWidget = QVTKRenderWindowInteractor(self.frame)
self.vl.addWidget(self.vtkWidget)
self.ren = vtk.vtkRenderer()
self.ren.UseFXAAOn()
self.vtkWidget.GetRenderWindow().AddRenderer(self.ren)
self.iren = self.vtkWidget.GetRenderWindow().GetInteractor()
# Create source
source = vtk.vtkSphereSource()
source.SetCenter(0, 0, 0)
source.SetRadius(1000.0)
# Create a mapper
mapper = vtk.vtkPolyDataMapper()
mapper.SetInputConnection(source.GetOutputPort())
# Create an actor
actor = vtk.vtkActor()
actor.SetMapper(mapper)
self.ren.AddActor(actor)
self.ren.ResetCamera()
self.frame.setLayout(self.vl)
self.setCentralWidget(self.frame)
self.show()
self.iren.Initialize()
if name == "main":
app = Qt.QApplication(sys.argv)
window = MainWindow()
sys.exit(app.exec_())
I experienced the issue, when I switched to a new PC which has a AMD GPU (RX 6800 XT) from a Nvidia GTX 1060. Left image with UseFXAAOn, right image without the line of code.
Edited by Mathieu Westphal (Kitware)