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Color calculations are assumed to be done in sRGB space [1]. There
is nothing specific to adding vertex colors to 3D meshes that would
impact this.<br>
<br>
Short answer: no, there is nothing explicitly needed for gamma
correction<br>
<br>
-- Kevin<br>
<br>
[1] <a class="moz-txt-link-freetext" href="https://en.wikipedia.org/wiki/SRGB">https://en.wikipedia.org/wiki/SRGB</a><br>
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<div class="moz-cite-prefix">On 9/4/2024 12:34 PM, Andy Goryachev
wrote:<br>
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<blockquote type="cite" cite="mid:DS0PR10MB62001EB8A46B82D6FB71685FE59C2@DS0PR10MB6200.namprd10.prod.outlook.com">
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Iosevka Fixed SS16"">Here
is a good example -<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Iosevka Fixed SS16""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Iosevka Fixed SS16""><a href="https://www.panotools.org/dersch/gamma/gamma.html" moz-do-not-send="true" class="moz-txt-link-freetext">https://www.panotools.org/dersch/gamma/gamma.html</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Iosevka Fixed SS16""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Iosevka Fixed SS16"">-andy<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Iosevka Fixed SS16""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Iosevka Fixed SS16""><o:p> </o:p></span></p>
<div id="mail-editor-reference-message-container">
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<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span style="font-size:12.0pt;color:black">From:
</span></b><span style="font-size:12.0pt;color:black">Knee Snap
<a class="moz-txt-link-rfc2396E" href="mailto:kneester77@gmail.com"><kneester77@gmail.com></a><br>
<b>Date: </b>Wednesday, September 4, 2024 at 12:24<br>
<b>To: </b>Andy Goryachev
<a class="moz-txt-link-rfc2396E" href="mailto:andy.goryachev@oracle.com"><andy.goryachev@oracle.com></a><br>
<b>Cc: </b><a class="moz-txt-link-abbreviated" href="mailto:openjfx-dev@openjdk.org">openjfx-dev@openjdk.org</a>
<a class="moz-txt-link-rfc2396E" href="mailto:openjfx-dev@openjdk.org"><openjfx-dev@openjdk.org></a><br>
<b>Subject: </b>[External] : Re: [Feature
Proposal]: TriangleMesh - Vertex Color Support<o:p></o:p></span></p>
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<div>
<p class="MsoNormal"><span style="font-size:12.0pt">I
don't know what gamma refers to in the context of
vertex colors, sorry.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt">It's
not using the gamma color space if that's the
question (but neither is the rest of JavaFX 3D).<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt">If
gamma is meant as opacity, then setting the alpha
color value will control opacity.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
</div>
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<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt">On Wed, Sep 4, 2024,
7:44</span><span style="font-size:12.0pt;font-family:"Arial",sans-serif"> </span><span style="font-size:12.0pt">AM Andy Goryachev
<<a href="mailto:andy.goryachev@oracle.com" target="_blank" moz-do-not-send="true" class="moz-txt-link-freetext">andy.goryachev@oracle.com</a>>
wrote:<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Iosevka Fixed SS16"">I am
not a 3D expert; one question: how is the
gamma value set for color interpolation?</span><span style="font-size:12.0pt"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Iosevka Fixed SS16""> </span><span style="font-size:12.0pt"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Iosevka Fixed SS16"">Thanks!</span><span style="font-size:12.0pt"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Iosevka Fixed SS16"">-andy</span><span style="font-size:12.0pt"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Iosevka Fixed SS16""> </span><span style="font-size:12.0pt"><o:p></o:p></span></p>
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<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt"><b><span style="font-size:12.0pt;color:black">From:
</span></b><span style="font-size:12.0pt;color:black">openjfx-dev <<a href="mailto:openjfx-dev-retn@openjdk.org" target="_blank" moz-do-not-send="true" class="moz-txt-link-freetext">openjfx-dev-retn@openjdk.org</a>>
on behalf of Knee Snap <<a href="mailto:kneester77@gmail.com" target="_blank" moz-do-not-send="true" class="moz-txt-link-freetext">kneester77@gmail.com</a>><br>
<b>Date: </b>Tuesday, September
3, 2024 at 23:53<br>
<b>To: </b><a href="mailto:openjfx-dev@openjdk.org" target="_blank" moz-do-not-send="true" class="moz-txt-link-freetext">openjfx-dev@openjdk.org</a>
<<a href="mailto:openjfx-dev@openjdk.org" target="_blank" moz-do-not-send="true" class="moz-txt-link-freetext">openjfx-dev@openjdk.org</a>><br>
<b>Subject: </b>[Feature
Proposal]: TriangleMesh - Vertex
Color Support</span><span style="font-size:12.0pt"><o:p></o:p></span></p>
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<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt">Hello
all,<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt">This is
a continuation of a previous
email thread: "[Feature
Proposal] Vertex Colors on
TriangleMesh".<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt">I'm
creating a new email thread
because after discussion I've
put together a feature proposal,
and it serves largely as a
summary of the previous email
thread. (Better organized as a
feature proposal)<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-size:12.0pt">Feature
Proposal:</span></b><span style="font-size:12.0pt">
<a href="https://urldefense.com/v3/__https:/github.com/Kneesnap/misc-public/blob/main/documents/javafx/feature-proposals/vertex-colors/proposal.md__;!!ACWV5N9M2RV99hQ!NdkJ9fSxFoeXCq6jCaYi5kCy2AQKgN0bqX5TvGoacJDqtLBwB2s_9pXshOJw88YKcqfB63dnYS_5axHwJ8GO3VNm$" target="_blank" moz-do-not-send="true">
https://github.com/Kneesnap/misc-public/blob/main/documents/javafx/feature-proposals/vertex-colors/proposal.md</a><o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt">I had
previously discussed a draft PR,
but considering how simple the
proposed public API additions
are to discuss, I don't think
it's actually that helpful.<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-size:12.0pt">What's
next?</span></b><span style="font-size:12.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt">I'm
currently happy with
the design and seeing as it's
been discussed already, I
could probably ask Kevin for a
review. But, I'd like to give
another opportunity for design
discussion before doing so,
just in-case there are any
further considerations brought
up.<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt">So, I
open up the floor again. Does
anyone have any thoughts on
this proposal? Concerns?
Questions? Suggestions?
Constructive criticism? I
eagerly await the feedback.<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt">After
API discussion concludes, I
plan to pass it off to Kevin
for review/approval, and if it
is approved, the subsequent
CSR creation.<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt">Thanks!<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt"><span style="font-size:12.0pt"> <o:p></o:p></span></p>
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