<br><br><div class="gmail_quote">On Fri, Jul 9, 2010 at 8:44 PM, Matthew Woehlke <span dir="ltr"><></span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
I would make two suggestions. First, as Dmitry suggested, impasto should<br>
be an additional channel, not a separate layer. Second, consider doing<br>
the initial implementation as suggested, i.e. render impasto for each<br>
layer before layer composition.<br></blockquote></div><br>I think, instead of rendering every layer, it is better to use COMPOSITE_ALPHA_DARKEN for impasto channel. It'll be much cheaper. In such a case, the final impasto value of the point on projection will be equal to the value of the most opaque layer.<br>
<br clear="all"><br>-- <br>Dmitry Kazakov<br>