import datetime as dt
from paraview import servermanager
from paraview.simple import *
#from paraview.benchmark import *
import logbase, logparser
logbase.maximize_logs()
records = []
n0 = dt.datetime.now()
[docs]def get_render_view(size):
'''Similar to GetRenderView except if a new view is created, it's
created with the specified size instead of having t resize afterwards
'''
view = active_objects.view
if not view:
# it's possible that there's no active view, but a render view exists.
# If so, locate that and return it (before trying to create a new one).
view = servermanager.GetRenderView()
if not view:
view = CreateRenderView(ViewSize=size)
return view
[docs]def save_render_buffer(fname):
'''Similar to SaveScreenshot except a re-render will not be triggered'''
import vtk
w = GetRenderView().SMProxy.GetRenderWindow()
w2i = vtk.vtkWindowToImageFilter()
w2i.ReadFrontBufferOff()
w2i.ShouldRerenderOff()
w2i.SetInput(w)
w2i.Modified()
tiff = TIFFWriter()
tiff.Input = w2i.GetOutput()
tiff.FileName = fname
tiff.UpdatePipeline()
[docs]def flush_render_buffer():
'''When running as a single process use the WindowToImage filter to
force a framebuffer read. This bypasses driver optimizations that
perform lazy rendering and allows you to get actual frame rates for
a single process with a GPU. Multi-process doesn't need this since
compositing forces the frame buffer read.
'''
# If we're not using off-screen rendering then we can bypass this since
# the frame buffer display will force a GL flush
w = GetRenderView().SMProxy.GetRenderWindow()
if not w.GetOffScreenRendering():
return
import vtk
# If we're using MPI we can also bypass this since compositing will
# for a GL flush
controller = vtk.vtkMultiProcessController.GetGlobalController()
if controller.GetNumberOfProcesses() > 1:
return
# Force a GL flush by retrieving the frame buffer image
w2i = vtk.vtkWindowToImageFilter()
w2i.ReadFrontBufferOff()
w2i.ShouldRerenderOff()
w2i.SetInput(w)
w2i.Modified()
w2i.Update()
[docs]def memtime_stamp():
global records
global n0
m = logbase.get_memuse()
n1 = dt.datetime.now()
et = n1 - n0
print (et, m)
n0 = n1
records.append([et, m])
[docs]def run(output_basename='log', num_spheres=8, num_spheres_in_scene=None,
resolution=725, view_size=(1920, 1080), num_frames=10, save_logs=True,
color=False, OSPRay=False):
if num_spheres_in_scene is None:
num_spheres_in_scene = num_spheres
import vtk
controller = vtk.vtkMultiProcessController.GetGlobalController()
view = get_render_view(view_size)
if OSPRay:
view.EnableOSPRay = 1
import math
edge = math.ceil(math.pow(num_spheres_in_scene, (1.0 / 3.0)))
box = Box()
box.XLength = edge
box.YLength = edge
box.ZLength = edge
box.Center = [edge * 0.5, edge * 0.5, edge * 0.5]
boxDisplay = Show()
boxDisplay.SetRepresentationType('Outline')
gen = ProgrammableSource(Script='''
import math
import vtk
try:
num_spheres
except:
num_spheres = 8
try:
num_spheres_in_scene
except:
num_spheres_in_scene = num_spheres
try:
res
except:
res = 725
edge = math.ceil(math.pow(num_spheres_in_scene, (1.0 / 3.0)))
controller = vtk.vtkMultiProcessController.GetGlobalController()
np = controller.GetNumberOfProcesses()
p = controller.GetLocalProcessId()
ns=lambda p:num_spheres/np + (1 if p >= np-num_spheres%np else 0)
start=int(sum([ns(P) for P in range(0,p)]))
end=start+ns(p)
ss = vtk.vtkSphereSource()
ss.SetPhiResolution(res)
ss.SetThetaResolution(res)
ap = vtk.vtkAppendPolyData()
print ('source',p,': generating',end - start,'spheres from',start,'to',end)
for x in range(start,end):
i = x%edge
j = math.floor((x / edge))%edge
k = math.floor((x / (edge * edge)))
ss.SetCenter(i + 0.5,j + 0.5,k + 0.5)
ss.Update()
pd = vtk.vtkPolyData()
pd.ShallowCopy(ss.GetOutput())
# pd.GetPointData().RemoveArray('Normals')
ap.AddInputData(pd)
ap.Update()
self.GetOutput().ShallowCopy(ap.GetOutput())
''')
paramprop = gen.GetProperty('Parameters')
paramprop.SetElement(0, 'num_spheres_in_scene')
paramprop.SetElement(1, str(num_spheres_in_scene))
paramprop.SetElement(2, 'num_spheres')
paramprop.SetElement(3, str(num_spheres))
paramprop.SetElement(4, 'res')
paramprop.SetElement(5, str(resolution))
gen.UpdateProperty('Parameters')
genDisplay = Show()
genDisplay.SetRepresentationType('Surface')
if color:
pidScale = ProcessIdScalars()
pidScaleDisplay = Show()
deltaAz = 45.0 / num_frames
deltaEl = 45.0 / num_frames
Render()
# Use a dummy camera to workaround MPI bugs when directly interacting with
# the view's camera
c = vtk.vtkCamera()
c.SetPosition(view.CameraPosition)
c.SetFocalPoint(view.CameraFocalPoint)
c.SetViewUp(view.CameraViewUp)
c.SetViewAngle(view.CameraViewAngle)
c.Azimuth(22.5)
c.Elevation(22.5)
view.CameraPosition = c.GetPosition()
view.CameraFocalPoint = c.GetFocalPoint()
view.CameraViewUp = c.GetViewUp()
view.CameraViewAngle = c.GetViewAngle()
fdigits = int(math.ceil(math.log(num_frames, 10)))
frame_fname_fmt = output_basename + '.scene.f%(f)0' + str(fdigits) + 'd.tiff'
SaveScreenshot(frame_fname_fmt % {'f': 0})
vtk.vtkTimerLog.MarkStartEvent('GetViewItemStats')
num_polys = sum([r.GetRepresentedDataInformation().GetNumberOfCells() for r in view.Representations])
num_points = sum([r.GetRepresentedDataInformation().GetNumberOfPoints() for r in view.Representations])
vtk.vtkTimerLog.MarkEndEvent('GetViewItemStats')
memtime_stamp()
fpsT0 = dt.datetime.now()
for frame in range(1, num_frames):
c.Azimuth(deltaAz)
c.Elevation(deltaEl)
view.CameraPosition = c.GetPosition()
view.CameraFocalPoint = c.GetFocalPoint()
view.CameraViewUp = c.GetViewUp()
view.CameraViewAngle = c.GetViewAngle()
Render()
flush_render_buffer()
memtime_stamp()
fpsT1 = dt.datetime.now()
if controller.GetLocalProcessId() == 0:
if save_logs:
# Save the arguments this was executed with
with open(output_basename + '.args.txt', 'w') as argfile:
argfile.write(str({
'output_basename': output_basename,
'num_spheres': num_spheres,
'num_spheres_in_scene': num_spheres_in_scene,
'resolution': resolution, 'view_size': view_size,
'num_frames': num_frames, 'save_logs': save_logs,
'color': color}))
# Save the memory statistics collected
with open(output_basename + '.mem.txt', 'w') as ofile:
ofile.write('\n'.join([str(x) for x in records]))
# Process frame timing statistics
logparser.summarize_results(num_frames, (fpsT1-fpsT0).total_seconds(),
num_polys, 'Polys', save_logs,
output_basename)
print ('Points / Frame: %(np)d' % {'np': num_points})
[docs]def main(argv):
import argparse
parser = argparse.ArgumentParser(
description='Benchmark ParaView geometry rendering')
parser.add_argument('-o', '--output-basename', default='log', type=str,
help='Basename to use for generated output files')
parser.add_argument('-s', '--spheres', default=100, type=int,
help='The total number of spheres to render')
parser.add_argument('-n', '--spheres-in-scene', type=int,
help='The number of spheres in the entire scene, including those not rendered.')
parser.add_argument('-r', '--resolution', default=4, type=int,
help='Theta and Phi resolution to use for the spheres')
parser.add_argument('-v', '--view-size', default=[400, 400],
type=lambda s: [int(x) for x in s.split(',')],
help='View size used to render')
parser.add_argument('-f', '--frames', default=10, type=int,
help='Number of frames')
parser.add_argument('-c', '--color', action='store_true',
help='Enable color renderings')
parser.add_argument('-y', '--OSPRay', action='store_true',
help='Use OSPRAY to render')
args = parser.parse_args(argv)
options = servermanager.vtkProcessModule.GetProcessModule().GetOptions()
url = options.GetServerURL()
if url:
import re
m = re.match('([^:/]*://)?([^:]*)(:([0-9]+))?', url)
if m.group(4):
Connect(m.group(2), m.group(4))
else:
Connect(m.group(2))
run(output_basename=args.output_basename, num_spheres=args.spheres,
num_spheres_in_scene=args.spheres_in_scene, resolution=args.resolution,
view_size=args.view_size, num_frames=args.frames, color=args.color, OSPRay=args.OSPRay)
if __name__ == "__main__":
import sys
main(sys.argv[1:])