# note: An alpha plane whose second half is a back-reference to its first.
# expect: ok
# exercises: CopyBlock8b(), the byte-wide copy the 8-bit alpha path uses in
#   place of the 32-bit one every other back-reference here goes through.
#   The distance is a plane code, resolved against the packed width of the
#   palette-coded image rather than against the width of the alpha plane.
chunks VP8X ALPH VP8
alpha 1
width 16
height 16
yac_qi 30
macroblock
coeffs y2 -20
alph_plane
transforms color_indexing
palette_colors 0x00000000 0x0000c800 0x0000ff00
code green complex
code dist complex
pixels 0x24 x32 copy 32 2