<p dir="ltr"><br>
On May 23, 2014 1:56 PM, "Bartek Skorupa (priv)" <<a href="mailto:bartekskorupa@bartekskorupa.com">bartekskorupa@bartekskorupa.com</a>> wrote:</p>
<p dir="ltr">> When I say: "clamp blacks" I always mean: set every value below 0.0 to 0.0.<br>
> When I say: "clamp whites" I always mean: set every value above 1.0 to 1.0.<br>
> Every compositing artist will know what I mean.</p>
<p dir="ltr">If we can generate a clamp / scale node, I am all for it.</p>
<p dir="ltr">I am saying there is no concept of white in a scene referred model, and as such, you have to be careful as to not write nodes that break the system.</p>
<p dir="ltr">It is that simple. No white. No brighter than white. So sorry, “Every artist...” is actually “Every artist unfamiliar with HDR work.”</p>
<p dir="ltr">So a clamp node _must_ not make the erroneous assumption that 1.0 means anything special, and rather provide for an arbitrary value range.</p>
<p dir="ltr">If this all seems like speaking an alien language, it is precisely why I chimed in and said “Whoa.”</p>
<p dir="ltr">There are already nodes that are broken because of erroneous assumptions. It would be a shame to make more.</p>
<p dir="ltr">With respect,<br>
TJS<br>
</p>