go-opengl-pixel/util.go

14 lines
322 B
Go

package pixel
import "image/color"
// colorToRGBA converts a color from image/color to RGBA components in interval [0, 1].
func colorToRGBA(c color.Color) (r, g, b, a float32) {
ri, gi, bi, ai := c.RGBA()
r = float32(ri) / 0xffff
g = float32(gi) / 0xffff
b = float32(bi) / 0xffff
a = float32(ai) / 0xffff
return
}