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Merge pull request #3016 from bungoboingo/hack/gles-fix-part2

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Fix GL backend choosing wrong texture format in `wgpu::image::atlas`
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Héctor 2025-11-29 11:00:51 +01:00 • committed by GitHub
commit 40d242bbe1
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1 changed files with 7 additions and 5 deletions
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12
wgpu/src/image/atlas.rs
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@ -449,13 +449,15 @@ impl Atlas {
return;
}
// On the GL backend if layers.len() == 6 we need to help wgpu figure out that this texture
// is still a `GL_TEXTURE_2D_ARRAY` rather than `GL_TEXTURE_CUBE_MAP`. This will over-allocate
// some unused memory on GL, but it's better than not being able to grow the atlas past a depth
// of 6!
// On the GL backend if layers.len() is a multiple of 6 we need to help wgpu figure out that this texture
// is still a `GL_TEXTURE_2D_ARRAY` rather than `GL_TEXTURE_CUBE_MAP` or `GL_TEXTURE_CUBE_ARRAY`.
// This will over-allocate some unused memory on GL, but it's better than not being able to
// grow the atlas past multiples of 6!
// https://github.com/gfx-rs/wgpu/blob/004e3efe84a320d9331371ed31fa50baa2414911/wgpu-hal/src/gles/mod.rs#L371
let depth_or_array_layers = match backend {
wgpu::Backend::Gl if self.layers.len() == 6 => 7,
wgpu::Backend::Gl if self.layers.len().is_multiple_of(6) => {
self.layers.len() as u32 + 1
}
_ => self.layers.len() as u32,
};