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Optimize and improve built-in PNG writer (#14020)

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sfan5 2023-12-27 11:56:48 +01:00 • committed by GitHub
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@ -5418,9 +5418,8 @@ Utilities
* `compression`: Optional zlib compression level, number in range 0 to 9.
The data is one-dimensional, starting in the upper left corner of the image
and laid out in scanlines going from left to right, then top to bottom.
Please note that it's not safe to use string.char to generate raw data,
use `colorspec_to_bytes` to generate raw RGBA values in a predictable way.
The resulting PNG image is always 32-bit. Palettes are not supported at the moment.
You can use `colorspec_to_bytes` to generate raw RGBA values.
Palettes are not supported at the moment.
You may use this to procedurally generate textures during server init.
* `minetest.urlencode(str)`: Encodes non-unreserved URI characters by a
percent sign followed by two hex digits. See