Wrong colours when rendering SKTexture

Question

Created Oct ’20

Replies 4

Boosts 1

Views 1.2k

Participants 4

I am generating an SKTexture with a GKNoiseMap. When I look at the texture in a swift playground, it has the expected colours. But when I apply the texture to a material and render it in a SCNView, the colours are different (colours appear too bright). What am I doing wrong?

Swift playground to reproduce the issue (look at the texture variable in the playground and compare to rendered image).

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Answer 1

Claude31 OP

Oct ’20

Too bright ?

How does this translate in color rob and alpha ?
Use Digital color meter to compare both.

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Answer 2

Nickkk OP

Jun ’21

I've noticed this as well and filed a bug report to Apple exactly 6 months ago, still without answer. It is easily reproducible with this code:

        let url = Bundle.main.url(forResource: "art.scnassets/texture.png", withExtension: nil)!
        plane1.firstMaterial!.diffuse.contents = url.path
        let node1 = SCNNode(geometry: plane1)
        node1.position.x = -5
        scene.rootNode.addChildNode(node1)

        let plane2 = SCNPlane(width: 10, height: 10)
        plane2.firstMaterial!.diffuse.contents = SKTexture(image: NSImage(byReferencing: url))
        let node2 = SCNNode(geometry: plane2)
        node2.position.x = 5
        scene.rootNode.addChildNode(node2)

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Answer 3

DTS Engineer OP

Apple

Jun ’21

I've noticed this as well and filed a bug report to Apple

What was your bug number?

Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"

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Answer 4

Nickkk OP

Aug ’24

Since this issue is still happening 3 years later on macOS 14.6.1, I stumbled again on this post and I see only now that you asked for the bug number, but unfortunately I didn't subscribe to this post back then and wasn't notified of your reply. It's FB8979522.

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