Color
Describes how to interpret the alpha component of a pixel. A pixel may be opaque, or alpha, describing multiple levels of transparency.
In simple blending, alpha weights the draw color and the destination color to create a new color. If alpha describes a weight from zero to one:
`new color = draw color * alpha + destination color * (1 - alpha)`
In practice alpha is encoded in two or more bits, where 1.0 equals all bits set.
RGB may have alpha included in each component value; the stored value is the original RGB multiplied by alpha. Premultiplied color components improve performance.
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Functions
Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
Returns an array containing the constants of this enum type, in the order they're declared.