Remove gamma correction section per working group resolution for Issue 8.

Author: dbaron

css3-color/Overview.html

@@ -285,10 +285,6 @@ <h2 class="no-num no-toc" id=contents>Table of Contents</h2>
      <li><a href="#foreground"><span class=secno>3.1. </span>Foreground
       color: the <span class=property>&lsquo;<code
       class=property>color</code>&rsquo;</span> property</a>
-      <ul class=toc>
-       <li><a href="#gamma"><span class=secno>3.1.1. </span>Gamma
-        correction</a>
-      </ul>
 
      <li><a href="#transparency"><span class=secno>3.2. </span>Transparency:
       the <span class=property>&lsquo;<code
@@ -527,58 +523,6 @@ <h3 id=foreground><span class=secno>3.1. </span>Foreground color: the <span
     section.
   </dl>
 
-  <h4 id=gamma><span class=secno>3.1.1. </span>Gamma correction</h4>
-
-  <p><em>For information about gamma issues, please consult the Gamma
-   Tutorial in the PNG specification (<a href="#PNG2e"
-   rel=biblioentry>[PNG2e]<!--{{!PNG2e}}--></a>).</em>
-
-  <p> In the computation of gamma correction, UAs displaying on a <abbr
-   title="cathode ray tube">CRT</abbr> may assume an ideal CRT and ignore any
-   effects on apparent gamma caused by dithering. That means the minimal
-   handling they need to do on current platforms is:
-
-  <dl>
-   <dt> PC using MS-Windows
-
-   <dd> none
-
-   <dt> Unix using X11
-
-   <dd> none
-
-   <dt> Mac using QuickDraw
-
-   <dd> apply gamma 1.45 <a href="#ICC42"
-    rel=biblioentry>[ICC42]<!--{{!ICC42}}--></a> (ColorSync-savvy
-    applications may simply pass the sRGB ICC profile to ColorSync to perform
-    correct color correction)
-
-   <dt> SGI using X
-
-   <dd> apply the gamma value from <tt>/etc/config/system.glGammaVal</tt>
-    (the default value being 1.70; applications running on Irix 6.2 or above
-    may simply pass the sRGB ICC profile to the color management system)
-  </dl>
-
-  <p>"Applying gamma" means that each of the three R, G and B must be
-   converted to R'=R<sup>gamma</sup>, G'=G<sup>gamma</sup>,
-   B'=B<sup>gamma</sup>, before being handed to the OS.
-
-  <p>This may rapidly be done by building a 256-element lookup table once per
-   browser invocation thus:
-
-  <pre>
-for i := 0 to 255 do
-  raw := i / 255.0;
-  corr := pow (raw, gamma);
-  table[i] := trunc (0.5 + corr * 255.0)
-end
-</pre>
-
-  <p>which then avoids any need to do transcendental math per color value,
-   far less per pixel.
-
   <h3 id=transparency><span class=secno>3.2. </span>Transparency: the <span
    class=property>&lsquo;<code class=property><a
    href="#opacity">opacity</a></code>&rsquo;</span> property</h3>
@@ -4928,27 +4872,6 @@ <h3 id=normative><span class=secno>11.1. </span>Normative</h3>
     </dd>
    <!---->
 
-   <dt id=ICC42>[ICC42]
-
-   <dd><a href="http://color.org/ICC1v42_2006-05.pdf"><cite>Image technology
-    colour management &#8212; Architecture, profile format, and data
-    structure.</cite></a> International Color Consortium. Specification
-    ICC.1:2004-10 (Profile version 4.2.0.0) With errata incorporated,
-    5/22/2006. URL: <a
-    href="http://color.org/ICC1v42_2006-05.pdf">http://color.org/ICC1v42_2006-05.pdf</a>
-    </dd>
-   <!---->
-
-   <dt id=PNG2e>[PNG2e]
-
-   <dd>David Duce. <a
-    href="http://www.w3.org/TR/2003/REC-PNG-20031110"><cite>Portable Network
-    Graphics (PNG) Specification (Second Edition).</cite></a> 10 November
-    2003. W3C Recommendation. URL: <a
-    href="http://www.w3.org/TR/2003/REC-PNG-20031110">http://www.w3.org/TR/2003/REC-PNG-20031110</a>
-    </dd>
-   <!---->
-
    <dt id=SRGB>[SRGB]
 
    <dd><a href="http://www.iec.ch/nr1899.htm"><cite>Multimedia systems and

css3-color/Overview.src.html

@@ -338,51 +338,6 @@ <h3 id="foreground">Foreground color: the <span class="property">'color'</span>
   </dd>
 </dl>
 
-<h4 id="gamma">Gamma correction</h4>
-
-<p><em>For information about gamma issues, please consult the
-Gamma Tutorial in the PNG specification ([[!PNG2e]]).</em></p>
-
-<p> In the computation of gamma correction, UAs displaying on a <abbr title="cathode ray tube">CRT</abbr>
-may assume an ideal CRT and ignore any effects on apparent gamma
-caused by dithering. That means the minimal handling they need to do
-on current platforms is:
-</p>
-  <dl>
-    <dt> PC using MS-Windows</dt>
-    <dd> none </dd>
-    <dt> Unix using X11 </dt>
-    <dd> none </dd>
-    <dt> Mac using QuickDraw </dt>
-    <dd> apply gamma 1.45 [[!ICC42]] (ColorSync-savvy applications
-      may simply pass the sRGB ICC profile to ColorSync
-      to perform correct color correction) </dd>
-    <dt> SGI using X </dt>
-    <dd> apply the gamma value from
-    <tt>/etc/config/system.glGammaVal</tt> (the default value being
-    1.70; applications running on Irix 6.2 or above may simply pass
-    the sRGB ICC profile to the color management system) </dd>
-  </dl>
-
-<p>"Applying gamma" means that each of the three R, G and B must be
-converted to R'=R<sup>gamma</sup>, G'=G<sup>gamma</sup>,
-B'=B<sup>gamma</sup>, before being handed to the OS.
-</p>
-<p>This may rapidly be done by building a 256-element lookup table
-once per browser invocation thus:
-</p>
-<pre>
-for i := 0 to 255 do
-  raw := i / 255.0;
-  corr := pow (raw, gamma);
-  table[i] := trunc (0.5 + corr * 255.0)
-end
-</pre>
-
-<p>which then avoids any need to do transcendental math per color
-value, far less per pixel.
-</p>
-
 <h3 id="transparency">Transparency: the <span class="property">'opacity'</span> property</h3>
 
 <p>