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mksource - Online in the Cloud

Run mksource in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command mksource that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

NAME


mksource - compute distant sources for RADIANCE image-based lighting

SYNOPSIS


mksource [ -d nsamps ][ -t thresh ][ -a maxang ] [ octree ]

DESCRIPTION


Mksource produces a RADIANCE scene description of distant illum sources corresponding to
bright, concentrated regions in the given ambient environment. Any local geometry is
ignored in the input octree, which should be derived from a captured light probe and
modeled as a distant hemispherical or spherical glow source. The output sources may then
be combined with this environment to produce a more efficient scene for rendering, faster
and less prone to sampling artifacts.

The -d option may be used to specify the number of ray samples, which defaults to 262,000.
Calculation time is roughly proportional to this setting, and the default is fine enough
to resolve sources the size of the sun (half a degree) or larger.

The -t option may be used to manually set the radiance threshold for sources, in
watts/sr/meter^2. The default uses the top 2 percentile of the environment, which is
usally a good value.

The -a option may be used to specify a maximum source diameter, which defaults to 15
degrees. Mkillum silently enforces a maximum of 180 degrees for this option.

If no input octree is specified, the standard input is read.

EXAMPLE


To add sources with a maximum size of 20 degrees to the enviornment described in
environ.oct:

mksource -a 20 environ.oct > srcs.rad
oconv -i environ.oct srcs.rad > env+srcs.oct

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