// colorToFloat32 returns the float32 representation of the given color
func colorToFloat32(c color.Color) float32 {
colorR, colorG, colorB, colorA := c.RGBA()
colorR >>= 8
colorG >>= 8
colorB >>= 8
colorA >>= 8
red := colorR
green := colorG << 8
blue := colorB << 16
alpha := colorA << 24
return math.Float32frombits((alpha | blue | green | red) & 0xfeffffff)
}
func (s *basicShader) generateBufferContent(ren *RenderComponent, buffer []float32) bool {
w := ren.Drawable.Width()
h := ren.Drawable.Height()
colorR, colorG, colorB, colorA := ren.Color.RGBA()
colorR >>= 8
colorG >>= 8
colorB >>= 8
colorA >>= 8
red := colorR
green := colorG << 8
blue := colorB << 16
alpha := colorA << 24
tint := math.Float32frombits((alpha | blue | green | red) & 0xfeffffff)
u, v, u2, v2 := ren.Drawable.View()
var changed bool
//setBufferValue(buffer, 0, 0, &changed)
//setBufferValue(buffer, 1, 0, &changed)
setBufferValue(buffer, 2, u, &changed)
setBufferValue(buffer, 3, v, &changed)
setBufferValue(buffer, 4, tint, &changed)
setBufferValue(buffer, 5, w, &changed)
//setBufferValue(buffer, 6, 0, &changed)
setBufferValue(buffer, 7, u2, &changed)
setBufferValue(buffer, 8, v, &changed)
setBufferValue(buffer, 9, tint, &changed)
setBufferValue(buffer, 10, w, &changed)
setBufferValue(buffer, 11, h, &changed)
setBufferValue(buffer, 12, u2, &changed)
setBufferValue(buffer, 13, v2, &changed)
setBufferValue(buffer, 14, tint, &changed)
//setBufferValue(buffer, 15, 0, &changed)
setBufferValue(buffer, 16, h, &changed)
setBufferValue(buffer, 17, u, &changed)
setBufferValue(buffer, 18, v2, &changed)
setBufferValue(buffer, 19, tint, &changed)
return changed
}