Removed dependence on SVG for transitioning between color-stops, in favor of an explicit explanation.

Author: tabatkins

css3-images/Overview.html

@@ -15,11 +15,11 @@
 
    <h1>CSS Images Module Level 3</h1>
 
-   <h2 class="no-num no-toc" id=longstatus-date>Editor's Draft 25 August 2010</h2>
+   <h2 class="no-num no-toc" id=longstatus-date>Editor's Draft 28 August 2010</h2>
 
    <dl>
     <dt>This version:</dt>
-    <!-- <dd><a href="http://www.w3.org/TR/2010/CR-css3-images-20100825/">http://www.w3.org/TR/2010/CR-css3-images-20100825/</a></dd> -->
+    <!-- <dd><a href="http://www.w3.org/TR/2010/CR-css3-images-20100828/">http://www.w3.org/TR/2010/CR-css3-images-20100828/</a></dd> -->
 
     <dd><a
      href="http://dev.w3.org/csswg/css3-images/">http://dev.w3.org/csswg/css3-images/</a>
@@ -546,11 +546,14 @@ <h4 id=color-stop-syntax><span class=secno>5.1.2.
      placed before the starting-point or after the ending-point; this is
      perfectly valid, as the starting-point and ending-point are just
      convenient references, and do not directly interact in the display of
-     the gradient. At each color-stop, the line is the color of the
-     color-stop. Before the first color-stop, the line is the color of the
-     first color-stop. After the last color-stop, the line is the color of
-     the last color-stop. Between two color-stops, the colors are
-     interpolated as SVG gradients.</p>
+     the gradient.</p>
+
+    <p>At each color-stop, the line is the color of the color-stop. Before
+     the first color-stop, the line is the color of the first color-stop.
+     After the last color-stop, the line is the color of the last color-stop.
+     Between two color-stops, the line's color is linearly interpolated
+     between the colors of the two color-stops, with the interpolation taking
+     place in premultiplied RGBA space.</p>
 
     <p>The following steps must be applied <em>in order</em> to process the
      list of color-stops. After applying these rules, all color-stops will

css3-images/Overview.src.html

@@ -270,7 +270,8 @@ <h4 class=no-toc><code>linear-gradient()</code> syntax</h4>
 		<h4><code>color-stop</code> Syntax</h4>
 		<p>The <dfn><code>&lt;color-stop&gt;</code></dfn> stands for:</p>
 		<pre class=prod><code>&lt;color&gt; [ &lt;percentage&gt; | &lt;length&gt; ]?</code></pre>
-		<p>Color-stops are points placed along the line defined by the gradient-line at the beginning of the rule.  Color-stops must be specified in order.  Percentages refer to the length of the gradient-line, with 0% being at the starting point and 100% being at the ending point.  Lengths are measured from the starting-point in the direction of the ending-point.  With either measure, color-stops may be placed before the starting-point or after the ending-point; this is perfectly valid, as the starting-point and ending-point are just convenient references, and do not directly interact in the display of the gradient.  At each color-stop, the line is the color of the color-stop.  Before the first color-stop, the line is the color of the first color-stop.  After the last color-stop, the line is the color of the last color-stop.  Between two color-stops, the colors are interpolated as SVG gradients.</p>
+		<p>Color-stops are points placed along the line defined by the gradient-line at the beginning of the rule.  Color-stops must be specified in order.  Percentages refer to the length of the gradient-line, with 0% being at the starting point and 100% being at the ending point.  Lengths are measured from the starting-point in the direction of the ending-point.  With either measure, color-stops may be placed before the starting-point or after the ending-point; this is perfectly valid, as the starting-point and ending-point are just convenient references, and do not directly interact in the display of the gradient.</p>
+		<p>At each color-stop, the line is the color of the color-stop.  Before the first color-stop, the line is the color of the first color-stop.  After the last color-stop, the line is the color of the last color-stop.  Between two color-stops, the line's color is linearly interpolated between the colors of the two color-stops, with the interpolation taking place in premultiplied RGBA space.</p>
 		<p>The following steps must be applied <em>in order</em> to process the list of color-stops.  After applying these rules, all color-stops will have a definite position and they will be in ascending order:</p>
 		<ol>
 			<li>If the first color-stop does not have a position, its position defaults to 0%. If the last color-stop does not have a position, its position defaults to 100%.</li>