Function validate_linear_texture_data 

pub(crate) fn validate_linear_texture_data(
    layout: &TexelCopyBufferLayout,
    format: TextureFormat,
    aspect: TextureAspect,
    buffer_size: BufferAddress,
    buffer_side: CopySide,
    copy_size: &Extent3d,
    need_copy_aligned_rows: bool,
) -> Result<(BufferAddress, BufferAddress), TransferError>

WebGPU’s validating linear texture data algorithm.

Copied with some modifications from WebGPU standard.

If successful, returns a pair (bytes, stride), where:

• bytes is the number of buffer bytes required for this copy, and
• stride number of bytes between array layers.