sprite

type RegionInfo struct {
	MinDistanceFromMidpoint float64
	MaxDistanceFromMidpoint float64
	MinIndex                byte
	MaxIndex                byte
	DistanceHistogram       []int
	IndexHistogram          []int
	FilledHistogramBuckets  int
	RangeLength             float64
	Size                    int
	SizeInRange             int
	Range                   *colour.PaletteRange
	RequiresExpansion       bool
}

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
	ModalIndex           byte
	DitheredIndex        byte
	IsMaskColour         bool
	IsAnimated           bool
	Midpoint             float64
	DistanceFromMidpoint float64
	IsBottom             bool
	IsLeft               bool
}

type ShaderOutput [][]ShaderInfo