Add Pixel struct
#289
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Add Pixel struct
#289
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madsmtm
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madsmtm
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Nov 23, 2025
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| /// The alpha component. | ||
| /// | ||
| /// `0xff` here means opaque, whereas `0` means transparent. | ||
| /// | ||
| /// NOTE: Transparency is not yet supported, see [#17], so this doesn't actually do anything. | ||
| /// | ||
| /// [#17]: https://github.com/rust-windowing/softbuffer/issues/17 | ||
| pub(crate) a: u8, |
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We could leave this out, but:
- There are backends that want to read this, such as the Web backend, and leaving it as padding in the struct would cause that to read uninitialized bytes instead.
- It'll be useful in moving towards Transparency #17 with less of a breaking change.
The downside of course is that struct initialization syntax is unavailable (at least until we expose this).
This is much more intuitive to use than manually bit-packing into a u32. The format is RGBX on WASM and Android and BGRX elsewhere. This should allow avoiding needless copying on these platforms.
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This is much easier to get right than manually bit-packing into a
u32.The format is RGBX on WASM (and TODO Android) and BGRX elsewhere, which should also allow avoiding needless copying on WASM. This should either fix or allow fixing #207.
See also discussion in #98. This is not a full solution to pixel formats such as proposed by #186 and #241, but I believe it's an improvement we can more easily make in the meantime, and if nothing else it should at least be a stepping stone in allowing us to figure out what we do want.
Fixes #109.
Tested on: