# note: The four combinations of the disposal and blending bits, in one
#   sequence.
# expect: reject
# anim: ok
# info: ok
# exercises: Both bits of the ANMF flag byte, in every combination, over
#   partial frames with alpha so that each combination actually changes the
#   canvas. Frame 1 is the opaque background; frames 2 to 5 are (dispose,
#   blend) = (0,0), (0,1), (1,0) and (1,1) in turn, which walks
#   IsKeyFrame(), the copy-or-zero-fill choice, both arms of the blending
#   branch and ZeroFillFrameRect() one after another in a single file.
alpha 1
canvas_width_minus_one 31
canvas_height_minus_one 31
frame
frame_duration 100
lossless
width 32
height 32
argb 0xff102030 x1024
frame
frame_x 1
frame_y 1
frame_duration 100
disposal_method 0
blending_method 0
lossless
width 12
height 12
alpha_is_used 1
argb 0x60ff0000 x144
frame
frame_x 3
frame_y 3
frame_duration 100
disposal_method 0
blending_method 1
lossless
width 12
height 12
alpha_is_used 1
argb 0x6000ff00 x144
frame
frame_x 5
frame_y 5
frame_duration 100
disposal_method 1
blending_method 0
lossless
width 12
height 12
alpha_is_used 1
argb 0x600000ff x144
frame
frame_x 2
frame_y 7
frame_duration 100
disposal_method 1
blending_method 1
lossless
width 16
height 12
alpha_is_used 1
argb 0x60ffff00 x192