Missing an attribute: specularConstant

[LibraSun]

MDN URL

https://developer.mozilla.org/en-US/docs/Web/SVG/Element/feSpotLight

What specific section or headline is this issue about?

ATTRIBUTES

What information was incorrect, unhelpful, or incomplete?

No mention is made of the specularConstant attribute, which represents the ks value in the Phong shading model. Should be included, as it is part of the feSpecularLighting spec.

What did you expect to see?

specularConstant listed just before specularExponent

Do you have any supporting links, references, or citations?

https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/specularConstant

Do you have anything more you want to share?

No response

MDN metadata

Page report details

• Folder: en-us/web/svg/element/fespotlight
• MDN URL: https://developer.mozilla.org/en-US/docs/Web/SVG/Element/feSpotLight
• GitHub URL: https://github.com/mdn/content/blob/main/files/en-us/web/svg/element/fespotlight/index.md
• Last commit: 3a1ef2a
• Document last modified: 2024-02-28T23:56:15.000Z

[Josh-Cena]

I don't see specularConstant here: https://drafts.fxtf.org/filter-effects/#feSpotLightElement do you have proof that specularConstant is supported for feSpotLightElement?

[LibraSun]

Only indirectly: (A) It *is mentioned* on the page you linked me to: [image: image.png] (B) Gemini AI engine refers to it when asked. (C) The page I linked you to on MDN defines it. (D) Setting 'specularConstant' to different values in SVG editors has visible and profound effects in their image Preview pane. (E) Specifically, this attribute is supported and flyout explanation provided by VSCode extensions like "SVG".

…

On Mon, Oct 7, 2024 at 8:40 AM Joshua Chen ***@***.***> wrote: I don't see specularConstant here: https://drafts.fxtf.org/filter-effects/#feSpotLightElement do you have proof that specularConstant is supported for feSpotLightElement? — Reply to this email directly, view it on GitHub <#36238 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ADL7NSPALLOCK5WRDDGCNQDZ2KFLBAVCNFSM6AAAAABPP4RTB2VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDGOJWHE3DMNJZHA> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[Josh-Cena]

Please check the following pages:

• https://developer.mozilla.org/en-US/docs/Web/SVG/Element/feSpecularLighting
• https://developer.mozilla.org/en-US/docs/Web/SVG/Element/feSpotLight
• https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/specularConstant

They are consistent about one thing: specularConstant is an attribute of feSpecularLighting, not an attribute of feSpotLight.

It is mentioned on the page you linked me to:

I can't see the image on GitHub, but all mentions of the specularConstant attribute are from the feSpecularLighting element, not feSpotLight.

Gemini AI engine refers to it when asked.

Never ever trust AI responses about technical facts.

The page I linked you to on MDN defines it.

That page explicitly says it's only supported for feSpecularLighting.

Please make sure that you are not mixing up feSpecularLighting and feSpotLight. I'm closing this for now, but if there's actually proof that browsers support specularConstant on the feSpotLight element, via a code example that can be directly viewed in browser, I'm happy to reopen.

[LibraSun]

You are definitely right and clearly I had become confused between two different SVG primitives, sorry.

…

On Mon, Oct 7, 2024 at 8:58 AM Joshua Chen ***@***.***> wrote: Please check the following pages: - https://developer.mozilla.org/en-US/docs/Web/SVG/Element/feSpecularLighting - https://developer.mozilla.org/en-US/docs/Web/SVG/Element/feSpotLight - https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/specularConstant They are consistent about one thing: specularConstant is an attribute of feSpecularLighting, not an attribute of feSpotLight. It *is mentioned* on the page you linked me to: I can't see the image on GitHub, but all mentions of the specularConstant attribute are from the feSpecularLighting element, not feSpotLight. Gemini AI engine refers to it when asked. Never ever trust AI responses about technical facts. The page I linked you to on MDN defines it. That page explicitly says it's only supported for feSpecularLighting. Please make sure that you are not mixing up feSpecularLighting and feSpotLight. I'm closing this for now, but if there's actually proof that browsers support specularConstant on the feSpotLight element, via a code example that can be directly viewed in browser, I'm happy to reopen. — Reply to this email directly, view it on GitHub <#36238 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ADL7NSIPT3YB5XWY76BZDJDZ2KHPRAVCNFSM6AAAAABPP4RTB2VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDGOJXGAYTEOJUGE> . You are receiving this because you authored the thread.Message ID: ***@***.***>