[External] : Re: [Feature Proposal]: TriangleMesh - Vertex Color Support

[Kevin Rushforth]

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.

Short answer: no, there is nothing explicitly needed for gamma correction

-- Kevin

[1] https://en.wikipedia.org/wiki/SRGB


On 9/4/2024 12:34 PM, Andy Goryachev wrote:
>
> Here is a good example -
>
> https://www.panotools.org/dersch/gamma/gamma.html
>
> -andy
>
> *From: *Knee Snap <kneester77 at gmail.com>
> *Date: *Wednesday, September 4, 2024 at 12:24
> *To: *Andy Goryachev <andy.goryachev at oracle.com>
> *Cc: *openjfx-dev at openjdk.org <openjfx-dev at openjdk.org>
> *Subject: *[External] : Re: [Feature Proposal]: TriangleMesh - Vertex 
> Color Support
>
> I don't know what gamma refers to in the context of vertex colors, sorry.
>
> It's not using the gamma color space if that's the question (but 
> neither is the rest of JavaFX 3D).
>
> If gamma is meant as opacity, then setting the alpha color value will 
> control opacity.
>
> On Wed, Sep 4, 2024, 7:44 AM Andy Goryachev 
> <andy.goryachev at oracle.com> wrote:
>
>     I am not a 3D expert; one question: how is the gamma value set for
>     color interpolation?
>
>     Thanks!
>
>     -andy
>
>     *From: *openjfx-dev <openjfx-dev-retn at openjdk.org> on behalf of
>     Knee Snap <kneester77 at gmail.com>
>     *Date: *Tuesday, September 3, 2024 at 23:53
>     *To: *openjfx-dev at openjdk.org <openjfx-dev at openjdk.org>
>     *Subject: *[Feature Proposal]: TriangleMesh - Vertex Color Support
>
>     Hello all,
>
>     This is a continuation of a previous email thread: "[Feature
>     Proposal] Vertex Colors on TriangleMesh".
>
>     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)
>
>     *Feature
>     Proposal:*https://github.com/Kneesnap/misc-public/blob/main/documents/javafx/feature-proposals/vertex-colors/proposal.md
>     <https://urldefense.com/v3/__https:/github.com/Kneesnap/misc-public/blob/main/documents/javafx/feature-proposals/vertex-colors/proposal.md__;!!ACWV5N9M2RV99hQ!NdkJ9fSxFoeXCq6jCaYi5kCy2AQKgN0bqX5TvGoacJDqtLBwB2s_9pXshOJw88YKcqfB63dnYS_5axHwJ8GO3VNm$>
>
>     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.
>
>     *What's next?*
>
>     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.
>
>     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.
>
>     After API discussion concludes, I plan to pass it off to Kevin for
>     review/approval, and if it is approved, the subsequent CSR creation.
>
>     Thanks!
>
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