--- trunk/test/vr-phong.diderot	2010/08/06 20:40:57	248
+++ trunk/test/vr-phong.diderot	2010/08/06 21:37:04	249
@@ -36,7 +36,7 @@
     {
         if (inside (pos,F)) {
            real val = F@pos;
-           vec3 grad = (D F)@pos;
+           vec3 grad = (∇ F)@pos;
            vec3 norm = grad/|grad|;
            vec3 halfDir = (lightDir - dir)/|lightDir - dir|;
            vec4 matRGBA = txf@[val];

<script type="text/javascript">//<![CDATA[
		function toggle_ffErrors() {
			var errorsblock = document.getElementById("ffErrorsBlock");
			var errorsgroup = document.getElementById("ffErrors");
			if (errorsblock.style.display == "none") {
				errorsblock.style.display = "block";
				errorsgroup.style.right = "10px";
			} else {
				errorsblock.style.display = "none";
				errorsgroup.style.right = "300px";
			}
		}
//]]></script>
<div id="ffErrors">
<a href="javascript:toggle_ffErrors();">Click to toggle</a>
<div id="ffErrorsBlock">
	<div class="error">does not end with &lt;/html&gt; tag</div>
	<div class="error">does not end with &lt;/body&gt; tag</div>
	<div class="info">The output has ended thus: 
            vec3 halfDir = (lightDir - dir)/|lightDir - dir|;
            vec4 matRGBA = txf@[val];</div>
</div></div>
</body></html>