[css-color-hdr] Added second color-hdr() worked example

Author: svgeesus

css-color-hdr-1/Overview.bs

@@ -643,7 +643,7 @@ Mixing Dynamic Range Limits: the ''dynamic-range-limit-mix()'' function {#dynami
 		Let <var>cxyz</var>[i] = pow(<var>c1xyz</var>[i] + <var>eps</var>, <var>w1</var> ) * pow(<var>c2xyz</var>[i] + <var>eps</var>, <var>w2</var> ) - <var>eps</var>
 
 	<div class="example" id="ex-hdr-interpolate">
-	For example, given c1 = color(rec2100-linear 0.9 1.0 0.8)
+	For example, given c1 = color(rec2100-linear 0.9 1.0 0.8),
 	c2 = color(rec2100-linear 1.8 2.0 1.5),
 	H1 = 0, H2 = 2, and H = 1:
 
@@ -656,6 +656,23 @@ Mixing Dynamic Range Limits: the ''dynamic-range-limit-mix()'' function {#dynami
 	</pre>
 	</div>
 
+	<div class="example" id="ex-hdr-interpolate-2">
+		For exmple, given c1 = color(display-p3 1 1 0.33),
+		c2 = jzczhz(70% 0.14 100),
+		H1 = 0.5, H2 = 4 and H = 2;
+
+	<pre class="lang-css">
+	c1xyz = [ 156.285, 188.337, 28.015 ]
+	c2xyz = [ 3776.1434, 4362.407, 1577.913 ]
+	w1 = 0.571 
+	w2 = 0.429
+	cxyz = [ 611.911, 724.180, 157.650 ]
+	</pre>
+
+	Note that c1 will be used unmodified at all headroom values &lt;= 0.5,
+	and c2 will be used unmodified at all headroom values >= 4.
+	</div>
+
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