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fix skin uniform buffer size (#19888)

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# Objective

for `BufferUsages::STORAGE` on webgpu (and maybe other contexts), buffer
sizes must be a multiple of 4. the skin uniform buffer starts at 16384
then increases by 1.5x, which eventually hits a number which isn't

## Solution

`.next_multiple_of(4)`
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robtfm 2025-07-02 21:06:27 +01:00 committed by GitHub
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commit b79b8133c8
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crates/bevy_pbr/src/render/skin.rs
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@ -220,7 +220,7 @@ pub fn prepare_skins(
let mut new_size = uniform.current_buffer.size(); let mut new_size = uniform.current_buffer.size();
while new_size < needed_size { while new_size < needed_size {
// 1.5× growth factor. // 1.5× growth factor.
new_size += new_size / 2; new_size = (new_size + new_size / 2).next_multiple_of(4);
} }
// Create the new buffers. // Create the new buffers.