sprite

type RegionInfo struct {
	MinDistanceFromMidpoint float64
	MaxDistanceFromMidpoint float64
	MinIndex                byte
	MaxIndex                byte
	RangeLength             float64
	Size                    int
	SizeInRange             int
	Range                   *colour.PaletteRange
}

type ShaderInfo struct {
	Colour           colour.RGB
	SpecialColour    colour.RGB
	Alpha            float64
	Specialness      float64
	Normal           colour.RGB
	AveragedNormal   colour.RGB
	Depth            colour.RGB
	Occlusion        colour.RGB
	Lighting         colour.RGB
	Shadowing        colour.RGB
	Detail           colour.RGB
	Transparency     colour.RGB
	Region           int
	LightingCalcDone bool
	DitherChecked    bool
	DitherDone       bool
	MaxLighting      float64
	MinLighting      float64
	ModalIndex       byte
	DitheredIndex    byte
	IsMaskColour     bool
	IsAnimated       bool
	IsBottom         bool
	IsLeft           bool
}

type ShaderOutput [][]ShaderInfo