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- SPR2GIF V4
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- spr2gif [options] <src> <dst>
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- Options are -<N> to reduce by NxN pixels (non scaled)
- -b/d/m/l/w=black/grey/white bias on reduced transparent edges
- -s means no scaling
- -a means no aspect scaling
- -i means no interlace on output
- -c means low res colours in anti-alias reduction
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- - Scans sprite for used colours, and uses pallete from sprite.
- - Discards unused colours
- - Orders colours by usage, but always lists black and white first (if used)
- and transparent last.
- - Understands sprite transparency mask and allocates as new transparent colour in gif
- (if 256 colours already used, then steals the least used one, changing its low bit)
- - Interlaces the gif image for better loading in web pages
- - Scales up sprite for original sprite mode
- - Option to reduce sprite, generating new colours for anti-aliasing
- In which case the sprite is not scaled up for sprite mode, only for aspect ratio.
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- sprtrans <oldsprite> <newsprite>
- Generates sprite with a mask using last colour as mask
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- A Kennard 1996
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