Add texture storage support

[MatthieuLepers]

Hi ! I'm working with texture_storage_2d that stores keys and values in a pixel as a vec4 vec4<u32>(key, value, 0u, 0u). I'm trying to sort very very large amount of data ~10 000 000 and buffers are not able to store that amount of data

It could be really awesome if your radix sort allow input to be a texture_storage_2d and produce a sorted texture_storage_2d

Have a good day !

[kishimisu]

Hi ! I'm afraid this would require to rewrite every kernel and shader as they were written to work with storage buffers exclusively.

Regarding the element count, what device are you using ? Buffers should handle millions of elements well, the default device limits (maxBufferSize and maxStorageBufferBindingSize) should allow up to 33,554,432 elements and I was able to work with 100,000,000+ elements by increasing these limits during the device creation.

Also have you looked into GPUCommandEncoder.copyTextureToBuffer() to convert your texture data into a storage buffer?