For example, you want to set 40% alpha transparence to #000000 (black color), you need to add 66 like this #66000000.
Lei Q amethystlei
hotpaw2
/ MyMetalWaterfall.swift
Last active
March 3, 2026 21:34
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| // | |
| // MyMetalWaterfall.swift | |
| // version 0.1.105 (updated for Swift 5) | |
| // | |
| // Demonstrates using a MetalKit compute shader to render a live waterfall RGB bitmap | |
| // into a UIView | |
| // | |
| // This is a single file iOS app | |
| // | |
| // It includes AppDelegate for a minimal demonstration app |
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| // check version | |
| node -v || node --version | |
| // list locally installed versions of node | |
| nvm ls | |
| // list remove available versions of node | |
| nvm ls-remote | |
| // install specific version of node |