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'''
from vtkmodules.vtkRenderingCore import vtkWindowToImageFilter
w = GetRenderView().SMProxy.GetRenderWindow()
w2i = vtkWindowToImageFilter()
w2i.ReadFrontBufferOff()
w2i.ShouldRerenderOff()
w2i.SetInput(w)
w2i.Modified()
png = PNGWriter()
png.Input = w2i.GetOutput()
png.FileName = fname
png.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
from vtkmodules.vtkParallelCore import vtkMultiProcessController
from vtkmodules.vtkRenderingCore import vtkWindowToImageFilter
# If we're using MPI we can also bypass this since compositing will
# for a GL flush
controller = vtkMultiProcessController.GetGlobalController()
if controller.GetNumberOfProcesses() > 1:
return
# Force a GL flush by retrieving the frame buffer image
w2i = 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', dimension=100, view_size=(1920, 1080),
num_frames=10, save_logs=True, ospray=False):
from vtkmodules.vtkParallelCore import vtkMultiProcessController
from vtkmodules.vtkCommonSystem import vtkTimerLog
controller = vtkMultiProcessController.GetGlobalController()
view = get_render_view(view_size)
if ospray:
view.EnableRayTracing = 1
print('Generating wavelet')
wavelet = Wavelet()
d2 = dimension // 2
wavelet.WholeExtent = [-d2, d2, -d2, d2, -d2, d2]
wavelet.Maximum = 100.0
waveletDisplay = Show()
waveletDisplay.SetRepresentationType('Volume')
print('Repositioning initial camera')
c = GetActiveCamera()
c.Azimuth(22.5)
c.Elevation(22.5)
print('Rendering first frame')
Render()
print('Saving frame 0 screenshot')
import math
fdigits = int(math.ceil(math.log(num_frames, 10)))
frame_fname_fmt = output_basename + '.scene.f%(f)0' + str(fdigits) + 'd.png'
SaveScreenshot(frame_fname_fmt % {'f': 0})
print('Gathering geometry counts')
vtkTimerLog.MarkStartEvent('GetViewItemStats')
num_voxels = 0
for r in view.Representations:
num_voxels += r.GetRepresentedDataInformation().GetNumberOfCells()
vtkTimerLog.MarkEndEvent('GetViewItemStats')
print('Beginning benchmark loop')
deltaAz = 45.0 / num_frames
deltaEl = 45.0 / num_frames
memtime_stamp()
fpsT0 = dt.datetime.now()
for frame in range(1, num_frames):
c.Azimuth(deltaAz)
c.Elevation(deltaEl)
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,
'dimension': dimension,
'view_size': view_size,
'num_frames': num_frames,
'ospray': ospray,
'save_logs': save_logs}))
# 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_voxels, 'Voxels', save_logs,
output_basename)
[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('-d', '--dimension', default=100, type=int,
help='The dimension of each side of the cubic volume')
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('-y', '--ospray', action='store_true',
help='Use OSPRAY to render')
args = parser.parse_args(argv)
options = servermanager.vtkRemotingCoreConfiguration.GetInstance()
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, dimension=args.dimension,
view_size=args.view_size, num_frames=args.frames, ospray=args.ospray)
if __name__ == "__main__":
import sys
main(sys.argv[1:])