# note: An alpha plane copying from before its own beginning.
# expect: reject
# roundtrip: no
# exercises: The bounds test inside the 8-bit loop, which is written
#   separately from the 32-bit one and refuses the copy rather than clamping
#   it: the distance reaches back further than the pixels decoded so far.
#   lz77-distance-past-start is the same mistake on the 32-bit path.
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 copy 32 40