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Rename MipmapsCount::Log2 to Max and check number of mipmaps

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This commit is contained in:
Pierre Krieger 2016-03-13 13:12:45 +01:00
parent 6db8e56380
commit 3dae5ccdc3
1 changed files with 15 additions and 11 deletions
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26
vulkano/src/image.rs
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@ -195,7 +195,7 @@ pub enum MipmapsCount {
/// Allocates the number of mipmaps required to store all the mipmaps of the image where each
/// mipmap is half the dimensions of the previous level.
Log2,
Max,
/// Allocate one mipmap (ie. just the main level).
One,
@ -260,22 +260,26 @@ impl<Ty, F, M> Image<Ty, F, M>
let samples = Ty::num_samples(num_samples);
assert!(samples >= 1);
// Compute the maximum number of mipmaps.
let max_mipmaps = {
let dims = Ty::extent(dimensions);
let dim: u32 = match Ty::ty() {
ImageType::Type1d => dims[0],
ImageType::Type2d => [dims[0], dims[1]].iter().cloned().min().unwrap(),
ImageType::Type3d => [dims[0], dims[1], dims[2]].iter().cloned().min().unwrap(),
};
assert!(dim >= 1);
32 - dim.leading_zeros()
};
// compute the number of mipmaps
let mipmaps = match mipmaps.into() {
MipmapsCount::Specific(num) => {
assert!(num >= 1);
assert!(num <= max_mipmaps);
num
},
MipmapsCount::Log2 => {
let dims = Ty::extent(dimensions);
let dim: u32 = match Ty::ty() {
ImageType::Type1d => dims[0],
ImageType::Type2d => [dims[0], dims[1]].iter().cloned().min().unwrap(),
ImageType::Type3d => [dims[0], dims[1], dims[2]].iter().cloned().min().unwrap(),
};
assert!(dim >= 1);
32 - dim.leading_zeros()
},
MipmapsCount::Max => max_mipmaps,
MipmapsCount::One => 1,
};