Rendering from a texture

Question

Willem640 OP

Created Oct ’20

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Hi!

Recently, I was wondering how I'd render a single 2d texture to the screen, I've seen things like this:

texture-mapping shader

But that seems hacky. Is that really the only way to do it?

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Answer 1

darknoon OP

Oct ’20

Yeah, that works if you want to display a quad within a metal view. That's actually a lot less code than most rendering APIs.

If you have a metal texture, eg from rendering with Core Image / MPS / your own metal compute kernel and just want to show it in a CALayer, you can make an IOSurface-backed texture and set the IOSurface as the contents of the CALayer.

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