Performance testing of acceleration structures

This test checks performance of acceleration structure implemented in the framework for various scenes.

[1]:

import lmenv
env = lmenv.load('.lmenv')

[2]:

import os
import imageio
import pandas as pd
import numpy as np
import timeit
%matplotlib inline
import matplotlib.pyplot as plt
from mpl_toolkits.axes_grid1 import make_axes_locatable
import lmscene
import lightmetrica as lm

[3]:

%load_ext lightmetrica_jupyter

[4]:

lm.init()
lm.log.init('jupyter')
lm.progress.init('jupyter')
lm.info()

[I|0.000] Lightmetrica -- Version 3.0.0 (rev. 70601db) Linux x64

[5]:

lm.comp.load_plugin(os.path.join(env.bin_path, 'accel_nanort'))
lm.comp.load_plugin(os.path.join(env.bin_path, 'accel_embree'))

[I|0.007] Loading plugin [name='accel_nanort']
[I|0.008] .. Successfully loaded [name='accel_nanort']
[I|0.008] Loading plugin [name='accel_embree']
[I|0.009] .. Successfully loaded [name='accel_embree']

[6]:

accel_names = [
    'sahbvh',
    'nanort',
    'embree',
    'embreeinstanced'
]
scene_names = lmscene.scenes_small()

[7]:

build_time_df = pd.DataFrame(columns=accel_names, index=scene_names)
render_time_df = pd.DataFrame(columns=accel_names, index=scene_names)

film = lm.load_film('film_output', 'bitmap', {
    'w': 1920,
    'h': 1080
})

for scene_name in scene_names:
    # Create scene w/o accel
    scene = lm.load_scene('scene', 'default', {})
    lmscene.load(scene, env.scene_path, scene_name)
    renderer = lm.load_renderer('renderer', 'raycast', {
        'scene': scene.loc(),
        'output': film.loc()
    })

    for accel_name in accel_names:
        accel = lm.load_accel('accel', accel_name, {})
        scene.set_accel(accel.loc())
        def build():
            scene.build()
        build_time = timeit.timeit(stmt=build, number=1)
        build_time_df[accel_name][scene_name] = build_time

        def render():
            renderer.render()
        render_time = timeit.timeit(stmt=render, number=1)
        render_time_df[accel_name][scene_name] = render_time

[I|0.029] Loading asset [name='film_output']
[I|0.107] Loading asset [name='scene']
[I|0.107] Loading asset [name='camera_main']
[I|0.107] Loading asset [name='model_obj']
[I|0.107] .. Loading OBJ file [path='fireplace_room.obj']
[I|0.107] .. Loading MTL file [path='fireplace_room.mtl']
[I|0.431] .. Loading texture [path='wood.ppm']
[I|0.522] .. Loading texture [path='leaf.ppm']
[I|0.525] .. Loading texture [path='picture8.ppm']
[I|0.556] .. Loading texture [path='wood5.ppm']
[I|0.609] Loading asset [name='renderer']
[I|0.609] Loading asset [name='accel']
[I|0.613] Building acceleration structure [name='accel']
[I|0.613] .. Flattening scene
[I|0.640] .. Building

[I|4.021] Loading asset [name='accel']
[I|4.021] .. Asset [name='accel'] has been already loaded. Replacing..
[I|4.026] Building acceleration structure [name='accel']
[I|4.026] .. Flattening scene
[I|4.036] .. Building

[I|8.204] Loading asset [name='accel']
[I|8.204] .. Asset [name='accel'] has been already loaded. Replacing..
[I|8.205] .. {"intcost":1.0,"maxBranchingFactor":2,"maxDepth":18,"maxLeafSize":32,"minLeafSize":1,"quality":1,"sahBlockSize":1,"travcost":1.0}
[I|8.205] .. {"compact":false,"dynamic":false,"filter":false,"robust":false}
[I|8.210] Building acceleration structure [name='accel']
[I|8.210] .. Flattening scene
[I|8.214] .. Building

[I|9.881] Loading asset [name='accel']
[I|9.881] .. Asset [name='accel'] has been already loaded. Replacing..
[I|9.886] Building acceleration structure [name='accel']
[I|9.886] .. Flattening scene
[I|9.886] .. Building

[I|11.628] Loading asset [name='scene']
[I|11.628] .. Asset [name='scene'] has been already loaded. Replacing..
[I|11.628] Loading asset [name='camera_main']
[I|11.628] .. Asset [name='camera_main'] has been already loaded. Replacing..
[I|11.628] Loading asset [name='model_obj']
[I|11.628] .. Asset [name='model_obj'] has been already loaded. Replacing..
[I|11.628] .. Loading OBJ file [path='CornellBox-Sphere.obj']
[I|11.629] .. Loading MTL file [path='CornellBox-Sphere.mtl']
[I|11.632] Loading asset [name='renderer']
[I|11.632] .. Asset [name='renderer'] has been already loaded. Replacing..
[I|11.632] Loading asset [name='accel']
[I|11.633] .. Asset [name='accel'] has been already loaded. Replacing..
[I|11.634] Building acceleration structure [name='accel']
[I|11.634] .. Flattening scene
[I|11.634] .. Building

[I|12.783] Loading asset [name='accel']
[I|12.783] .. Asset [name='accel'] has been already loaded. Replacing..
[I|12.784] Building acceleration structure [name='accel']
[I|12.784] .. Flattening scene
[I|12.784] .. Building

[I|14.103] Loading asset [name='accel']
[I|14.103] .. Asset [name='accel'] has been already loaded. Replacing..
[I|14.103] .. {"intcost":1.0,"maxBranchingFactor":2,"maxDepth":18,"maxLeafSize":32,"minLeafSize":1,"quality":1,"sahBlockSize":1,"travcost":1.0}
[I|14.104] .. {"compact":false,"dynamic":false,"filter":false,"robust":false}
[I|14.104] Building acceleration structure [name='accel']
[I|14.104] .. Flattening scene
[I|14.104] .. Building

[I|15.114] Loading asset [name='accel']
[I|15.115] .. Asset [name='accel'] has been already loaded. Replacing..
[I|15.115] Building acceleration structure [name='accel']
[I|15.115] .. Flattening scene
[I|15.115] .. Building

[I|16.155] Loading asset [name='scene']
[I|16.155] .. Asset [name='scene'] has been already loaded. Replacing..
[I|16.155] Loading asset [name='camera_main']
[I|16.155] .. Asset [name='camera_main'] has been already loaded. Replacing..
[I|16.155] Loading asset [name='model_obj']
[I|16.155] .. Asset [name='model_obj'] has been already loaded. Replacing..
[I|16.155] .. Loading OBJ file [path='cube.obj']
[I|16.155] .. Loading MTL file [path='default.mtl']
[I|16.155] .. Loading texture [path='default.png']
[I|16.168] Loading asset [name='renderer']
[I|16.169] .. Asset [name='renderer'] has been already loaded. Replacing..
[I|16.169] Loading asset [name='accel']
[I|16.169] .. Asset [name='accel'] has been already loaded. Replacing..
[I|16.169] Building acceleration structure [name='accel']
[I|16.169] .. Flattening scene
[I|16.169] .. Building

[I|17.184] Loading asset [name='accel']
[I|17.185] .. Asset [name='accel'] has been already loaded. Replacing..
[I|17.185] Building acceleration structure [name='accel']
[I|17.186] .. Flattening scene
[I|17.186] .. Building

[I|18.236] Loading asset [name='accel']
[I|18.236] .. Asset [name='accel'] has been already loaded. Replacing..
[I|18.237] .. {"intcost":1.0,"maxBranchingFactor":2,"maxDepth":18,"maxLeafSize":32,"minLeafSize":1,"quality":1,"sahBlockSize":1,"travcost":1.0}
[I|18.237] .. {"compact":false,"dynamic":false,"filter":false,"robust":false}
[I|18.237] Building acceleration structure [name='accel']
[I|18.237] .. Flattening scene
[I|18.237] .. Building

[I|19.308] Loading asset [name='accel']
[I|19.308] .. Asset [name='accel'] has been already loaded. Replacing..
[I|19.309] Building acceleration structure [name='accel']
[I|19.309] .. Flattening scene
[I|19.309] .. Building

[8]:

build_time_df

[8]:

	sahbvh	nanort	embree	embreeinstanced
fireplace_room	0.645609	0.216296	0.057111	0.053923
cornell_box_sphere	0.004559	0.0044	0.001302	0.001325
cube	0.000327	0.000361	0.000211	0.000576

[9]:

render_time_df

[9]:

	sahbvh	nanort	embree	embreeinstanced
fireplace_room	2.764176	3.964399	1.616974	1.691021
cornell_box_sphere	1.143472	1.313948	1.008554	1.037441
cube	1.014187	1.049692	1.069868	1.075038