Function packed_rgba16f_layout 

pub fn packed_rgba16f_layout(
    format: PixelFormat,
    dtype: DType,
    width: usize,
    height: usize,
) -> Option<PackedRgba16fLayout>

Canonical geometry for the RGBA16F-packed surface backing a planar F16 image tensor.

Returns Some(layout) only when all of the following hold:

• dtype == DType::F16
• format is PixelFormat::PlanarRgb (3 planes) or PixelFormat::PlanarRgba (4 planes)
• width % 4 == 0

Returns None for any other (format, dtype) combination, misaligned width, or when the surface geometry would overflow usize — callers must fall back to a non-packed path or return a context-appropriate error.

Examples

use edgefirst_tensor::{packed_rgba16f_layout, PixelFormat, DType};

let layout = packed_rgba16f_layout(PixelFormat::PlanarRgb, DType::F16, 640, 480).unwrap();
assert_eq!(layout.surface_w, 160);
assert_eq!(layout.surface_h, 1440);
assert_eq!(layout.bytes_per_texel, 8);
assert_eq!(layout.pitch, 1280);