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<h1 class="title">pixie/internal</h1>
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<a class="reference reference-toplevel" href="#12" id="62">Procs</a>
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<ul class="simple nested-toc-section">toPremultipliedAlpha
<li><a class="reference" href="#toPremultipliedAlpha%2Cseq%5B%5D"
title="toPremultipliedAlpha(data: var seq[ColorRGBA | ColorRGBX])">toPremultipliedAlpha,<wbr>seq[]</a></li>
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<ul class="simple nested-toc-section">gaussianLookup
<li><a class="reference" href="#gaussianLookup%2Cint"
title="gaussianLookup(radius: int): seq[uint32]">gaussianLookup,<wbr>int</a></li>
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<ul class="simple nested-toc-section">unpackAlphaValues
<li><a class="reference" href="#unpackAlphaValues%2CM128i"
title="unpackAlphaValues(v: M128i): M128i">unpackAlphaValues,<wbr>M128i</a></li>
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<ul class="simple nested-toc-section">packAlphaValues
<li><a class="reference" href="#packAlphaValues%2CM128i"
title="packAlphaValues(v: M128i): M128i">packAlphaValues,<wbr>M128i</a></li>
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<ul class="simple nested-toc-section">toStraightAlpha
<li><a class="reference" href="#toStraightAlpha%2Cseq%5B%5D"
title="toStraightAlpha(data: var seq[ColorRGBA | ColorRGBX])">toStraightAlpha,<wbr>seq[]</a></li>
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<h1><a class="toc-backref" href="#12">Procs</a></h1>
<dl class="item">
<a id="gaussianLookup,int"></a>
<dt><pre><span class="Keyword">proc</span> <a href="#gaussianLookup%2Cint"><span class="Identifier">gaussianLookup</span></a><span class="Other">(</span><span class="Identifier">radius</span><span class="Other">:</span> <span class="Identifier">int</span><span class="Other">)</span><span class="Other">:</span> <span class="Identifier">seq</span><span class="Other">[</span><span class="Identifier">uint32</span><span class="Other">]</span> <span><span class="Other">{</span><span class="Other pragmadots">...</span><span class="Other">}</span></span><span class="pragmawrap"><span class="Other">{.</span><span class="pragma"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span><span class="Other">.}</span></span></pre></dt>
<dd>
Compute lookup table for 1d Gaussian kernel. Values are [0, 255] * 1024.
</dd>
<a id="toStraightAlpha,seq[]"></a>
<dt><pre><span class="Keyword">proc</span> <a href="#toStraightAlpha%2Cseq%5B%5D"><span class="Identifier">toStraightAlpha</span></a><span class="Other">(</span><span class="Identifier">data</span><span class="Other">:</span> <span class="Keyword">var</span> <span class="Identifier">seq</span><span class="Other">[</span><span class="Identifier">ColorRGBA</span> <span class="Operator">|</span> <span class="Identifier">ColorRGBX</span><span class="Other">]</span><span class="Other">)</span></pre></dt>
<dd>
Converts an image from premultiplied alpha to straight alpha. This is expensive for large images.
</dd>
<a id="toPremultipliedAlpha,seq[]"></a>
<dt><pre><span class="Keyword">proc</span> <a href="#toPremultipliedAlpha%2Cseq%5B%5D"><span class="Identifier">toPremultipliedAlpha</span></a><span class="Other">(</span><span class="Identifier">data</span><span class="Other">:</span> <span class="Keyword">var</span> <span class="Identifier">seq</span><span class="Other">[</span><span class="Identifier">ColorRGBA</span> <span class="Operator">|</span> <span class="Identifier">ColorRGBX</span><span class="Other">]</span><span class="Other">)</span></pre></dt>
<dd>
Converts an image to premultiplied alpha from straight alpha.
</dd>
<a id="packAlphaValues,M128i"></a>
<dt><pre><span class="Keyword">proc</span> <a href="#packAlphaValues%2CM128i"><span class="Identifier">packAlphaValues</span></a><span class="Other">(</span><span class="Identifier">v</span><span class="Other">:</span> <span class="Identifier">M128i</span><span class="Other">)</span><span class="Other">:</span> <span class="Identifier">M128i</span> <span><span class="Other">{</span><span class="Other pragmadots">...</span><span class="Other">}</span></span><span class="pragmawrap"><span class="Other">{.</span><span class="pragma"><span class="Identifier">inline</span><span class="Other">,</span> <span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span><span class="Other">.}</span></span></pre></dt>
<dd>
Shuffle the alpha values for these 4 colors to the first 4 bytes
</dd>
<a id="unpackAlphaValues,M128i"></a>
<dt><pre><span class="Keyword">proc</span> <a href="#unpackAlphaValues%2CM128i"><span class="Identifier">unpackAlphaValues</span></a><span class="Other">(</span><span class="Identifier">v</span><span class="Other">:</span> <span class="Identifier">M128i</span><span class="Other">)</span><span class="Other">:</span> <span class="Identifier">M128i</span> <span><span class="Other">{</span><span class="Other pragmadots">...</span><span class="Other">}</span></span><span class="pragmawrap"><span class="Other">{.</span><span class="pragma"><span class="Identifier">inline</span><span class="Other">,</span> <span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span><span class="Other">.}</span></span></pre></dt>
<dd>
Unpack the first 32 bits into 4 rgba(0, 0, 0, value)
</dd>
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<small style="color: var(--hint);">Made with Nim. Generated: 2021-02-27 01:24:33 UTC</small>
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