[No] Postprocess shaders for sky

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Postprocess shaders for sky

Postby Marisa Kirisame » Thu Mar 08, 2018 12:02 pm

This is kind of a wild idea but... How about a postprocess shader that applies on top of the sky? (I assume skies are done on a separate render pass). An "aftersky" keyword has been suggested for this.

Being able to make procedural "backgrounds" would be fun. There are some things that just aren't easily doable with conventional skyboxes.
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Marisa Kirisame
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Re: Postprocess shaders for sky

Postby dpJudas » Thu Mar 08, 2018 12:28 pm

Can't you just use a texture shader for this in a conventional skybox?
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Re: Postprocess shaders for sky

Postby Graf Zahl » Thu Mar 08, 2018 12:31 pm

Skies are NOT done in a separate pass, they are drawn into a stencil of the main scene (or, if there's only one portal effect, drawn into the framebuffer before rendering the rest on top of it.
There is no guarantee that there ever is a framebuffer that could be run through the postprocessing logic.
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