Enum FramePixels 

pub enum FramePixels {
    Cpu(PixelBuffer),
    Gpu(Texture),
}

FramePixels is what a decoder hands back — never an image; the loader makes those.

Variants

Cpu(PixelBuffer)

Cpu is owned samples in any layout PixelBuffer accepts; the loader uploads them.

Gpu(Texture)

Gpu is a texture already holding the frame on the request’s device, so nothing is copied back through the CPU. It must be 2D, single-sample, Rgba8Unorm or Bgra8Unorm, carry TEXTURE_BINDING, and hold premultiplied sRGB samples. Whatever backs it must stay alive until wgpu drops the texture; see valo::import_metal_texture.