Tiles are requested three times

[akreshuk]

For each tile three requests are coming. This makes the volume editor three times slower.

[stuarteberg]

According to @thorbenk this should reproduce it:

from volumina.api import Viewer
from PyQt4.QtGui import QApplication
from PyQt4.QtCore import QTimer

app = QApplication([])
v = Viewer()
import numpy
a = numpy.zeros((50,50,50), dtype=numpy.uint8)
v.addGrayscaleLayer(a, name="raw")
v.show()

def change():
    v.dataShape = (1, 100, 200, 300, 1)

#QTimer.singleShot(200, change)
app.exec_()

Use above code with:

$ cat > .voluminarc
[pixelpipeline]
verbose: true