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epaint: Added ColorImage::from_rgba_vec constructor

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This is typically used when there's an existing image buffer and memory copying is to be avoided.
This commit is contained in:
Varphone Wong
2024-02-28 09:58:03 +08:00
parent c6bd30642a
commit 899a92df8c
1 changed files with 10 additions and 0 deletions
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10
crates/epaint/src/image.rs
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@@ -123,6 +123,16 @@ impl ColorImage {
Self { size, pixels } Self { size, pixels }
} }
/// Creates a [`ColorImage`] with an existing image buffer.
///
/// This is typically used when you want to avoid unnecessary memory copying by reusing an existing image buffer.
///
/// Panics if `size[0] * size[1] != pixels.len()`.
pub fn from_rgba_vec(size: [usize; 2], pixels: Vec<Color32>) -> Self {
assert_eq!(size[0] * size[1], pixels.len());
Self { size, pixels }
}
/// Create a [`ColorImage`] from flat opaque gray data. /// Create a [`ColorImage`] from flat opaque gray data.
/// ///
/// Panics if `size[0] * size[1] != gray.len()`. /// Panics if `size[0] * size[1] != gray.len()`.