68 lines
2.2 KiB
XML
68 lines
2.2 KiB
XML
<?xml version="1.0"?>
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<!DOCTYPE book PUBLIC "-//Norman Walsh//DTD DocBk XML V3.1.4//EN"
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"file:///usr/share/xml/docbook/schema/dtd/4.4/docbookx.dtd">
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<chapter id="user-file"><title>File Output</title>
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<p>File output options determine the format in which rendered images are written,
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and how frequently they are written. Depending on the compilation options used,
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available file output options vary.</p>
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<s><t>Output Color Depth</t>
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<p>Output color depth of 8 or 16 bits of precision per color channel can be specified,
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for 24-bit or 48-bit color, respectively. </p>
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<ll>--8bpc Write 8 bit per channel output [default]
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--16bpc Write 16 bit per channel output
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</ll>
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</s>
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<s><t>Extension-based file type determination</t>
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<p>If ALE has been built with ImageMagick support, then the output file type can
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be determined automatically by file extension. This is the default behavior
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for ImageMagick builds. The <code>--auto</code> flag explicitly specifies that
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the default behavior should be used; it generates an error on builds compiled
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without ImageMagick support. </p>
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<ll>--auto Determine file type automatically
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</ll>
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</s>
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<s><t>PPM Output</t>
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<p>All builds of ALE support PPM output. PPM can be written in plain (ASCII) or
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raw (binary) format. If ALE has been built without ImageMagick support, or if
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the file type cannot be automatically determined by file extension, then raw
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PPM output is used by default.</p>
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<ll>--raw Write raw PPM output
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--plain Write plain PPM output
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</ll>
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</s>
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<s><t>Incremental Output</t>
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<p>By default, ALE writes intermediate results periodically throughout the rendering
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process. This behavior can be disabled, however, so that output is written only
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after rendering is complete.</p>
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<ll>--inc Produce incremental output. [default]
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--no-inc Don't produce incremental output.
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</ll>
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</s>
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<s><t>Undefined Values</t>
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<p>By default, ALE colors undefined values black. To assign nearest-neighbor colors
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to undefined pixels, the <code>--def-nn</code> option can be used.
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</p>
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<ll>--def-nn <R> Use nearest-neighbor defined values within
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radius <R>, zero outside. Default radius is 0.
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</ll>
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</s>
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</chapter>
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