summaryrefslogtreecommitdiff
path: root/libgo/go/image/image.go
diff options
context:
space:
mode:
Diffstat (limited to 'libgo/go/image/image.go')
-rw-r--r--libgo/go/image/image.go149
1 files changed, 82 insertions, 67 deletions
diff --git a/libgo/go/image/image.go b/libgo/go/image/image.go
index bebb9f70fa6..ffd6de73837 100644
--- a/libgo/go/image/image.go
+++ b/libgo/go/image/image.go
@@ -80,7 +80,8 @@ func (p *RGBA) RGBAAt(x, y int) color.RGBA {
return color.RGBA{}
}
i := p.PixOffset(x, y)
- return color.RGBA{p.Pix[i+0], p.Pix[i+1], p.Pix[i+2], p.Pix[i+3]}
+ s := p.Pix[i : i+4 : i+4] // Small cap improves performance, see https://golang.org/issue/27857
+ return color.RGBA{s[0], s[1], s[2], s[3]}
}
// PixOffset returns the index of the first element of Pix that corresponds to
@@ -95,10 +96,11 @@ func (p *RGBA) Set(x, y int, c color.Color) {
}
i := p.PixOffset(x, y)
c1 := color.RGBAModel.Convert(c).(color.RGBA)
- p.Pix[i+0] = c1.R
- p.Pix[i+1] = c1.G
- p.Pix[i+2] = c1.B
- p.Pix[i+3] = c1.A
+ s := p.Pix[i : i+4 : i+4] // Small cap improves performance, see https://golang.org/issue/27857
+ s[0] = c1.R
+ s[1] = c1.G
+ s[2] = c1.B
+ s[3] = c1.A
}
func (p *RGBA) SetRGBA(x, y int, c color.RGBA) {
@@ -106,10 +108,11 @@ func (p *RGBA) SetRGBA(x, y int, c color.RGBA) {
return
}
i := p.PixOffset(x, y)
- p.Pix[i+0] = c.R
- p.Pix[i+1] = c.G
- p.Pix[i+2] = c.B
- p.Pix[i+3] = c.A
+ s := p.Pix[i : i+4 : i+4] // Small cap improves performance, see https://golang.org/issue/27857
+ s[0] = c.R
+ s[1] = c.G
+ s[2] = c.B
+ s[3] = c.A
}
// SubImage returns an image representing the portion of the image p visible
@@ -179,11 +182,12 @@ func (p *RGBA64) RGBA64At(x, y int) color.RGBA64 {
return color.RGBA64{}
}
i := p.PixOffset(x, y)
+ s := p.Pix[i : i+8 : i+8] // Small cap improves performance, see https://golang.org/issue/27857
return color.RGBA64{
- uint16(p.Pix[i+0])<<8 | uint16(p.Pix[i+1]),
- uint16(p.Pix[i+2])<<8 | uint16(p.Pix[i+3]),
- uint16(p.Pix[i+4])<<8 | uint16(p.Pix[i+5]),
- uint16(p.Pix[i+6])<<8 | uint16(p.Pix[i+7]),
+ uint16(s[0])<<8 | uint16(s[1]),
+ uint16(s[2])<<8 | uint16(s[3]),
+ uint16(s[4])<<8 | uint16(s[5]),
+ uint16(s[6])<<8 | uint16(s[7]),
}
}
@@ -199,14 +203,15 @@ func (p *RGBA64) Set(x, y int, c color.Color) {
}
i := p.PixOffset(x, y)
c1 := color.RGBA64Model.Convert(c).(color.RGBA64)
- p.Pix[i+0] = uint8(c1.R >> 8)
- p.Pix[i+1] = uint8(c1.R)
- p.Pix[i+2] = uint8(c1.G >> 8)
- p.Pix[i+3] = uint8(c1.G)
- p.Pix[i+4] = uint8(c1.B >> 8)
- p.Pix[i+5] = uint8(c1.B)
- p.Pix[i+6] = uint8(c1.A >> 8)
- p.Pix[i+7] = uint8(c1.A)
+ s := p.Pix[i : i+8 : i+8] // Small cap improves performance, see https://golang.org/issue/27857
+ s[0] = uint8(c1.R >> 8)
+ s[1] = uint8(c1.R)
+ s[2] = uint8(c1.G >> 8)
+ s[3] = uint8(c1.G)
+ s[4] = uint8(c1.B >> 8)
+ s[5] = uint8(c1.B)
+ s[6] = uint8(c1.A >> 8)
+ s[7] = uint8(c1.A)
}
func (p *RGBA64) SetRGBA64(x, y int, c color.RGBA64) {
@@ -214,14 +219,15 @@ func (p *RGBA64) SetRGBA64(x, y int, c color.RGBA64) {
return
}
i := p.PixOffset(x, y)
- p.Pix[i+0] = uint8(c.R >> 8)
- p.Pix[i+1] = uint8(c.R)
- p.Pix[i+2] = uint8(c.G >> 8)
- p.Pix[i+3] = uint8(c.G)
- p.Pix[i+4] = uint8(c.B >> 8)
- p.Pix[i+5] = uint8(c.B)
- p.Pix[i+6] = uint8(c.A >> 8)
- p.Pix[i+7] = uint8(c.A)
+ s := p.Pix[i : i+8 : i+8] // Small cap improves performance, see https://golang.org/issue/27857
+ s[0] = uint8(c.R >> 8)
+ s[1] = uint8(c.R)
+ s[2] = uint8(c.G >> 8)
+ s[3] = uint8(c.G)
+ s[4] = uint8(c.B >> 8)
+ s[5] = uint8(c.B)
+ s[6] = uint8(c.A >> 8)
+ s[7] = uint8(c.A)
}
// SubImage returns an image representing the portion of the image p visible
@@ -291,7 +297,8 @@ func (p *NRGBA) NRGBAAt(x, y int) color.NRGBA {
return color.NRGBA{}
}
i := p.PixOffset(x, y)
- return color.NRGBA{p.Pix[i+0], p.Pix[i+1], p.Pix[i+2], p.Pix[i+3]}
+ s := p.Pix[i : i+4 : i+4] // Small cap improves performance, see https://golang.org/issue/27857
+ return color.NRGBA{s[0], s[1], s[2], s[3]}
}
// PixOffset returns the index of the first element of Pix that corresponds to
@@ -306,10 +313,11 @@ func (p *NRGBA) Set(x, y int, c color.Color) {
}
i := p.PixOffset(x, y)
c1 := color.NRGBAModel.Convert(c).(color.NRGBA)
- p.Pix[i+0] = c1.R
- p.Pix[i+1] = c1.G
- p.Pix[i+2] = c1.B
- p.Pix[i+3] = c1.A
+ s := p.Pix[i : i+4 : i+4] // Small cap improves performance, see https://golang.org/issue/27857
+ s[0] = c1.R
+ s[1] = c1.G
+ s[2] = c1.B
+ s[3] = c1.A
}
func (p *NRGBA) SetNRGBA(x, y int, c color.NRGBA) {
@@ -317,10 +325,11 @@ func (p *NRGBA) SetNRGBA(x, y int, c color.NRGBA) {
return
}
i := p.PixOffset(x, y)
- p.Pix[i+0] = c.R
- p.Pix[i+1] = c.G
- p.Pix[i+2] = c.B
- p.Pix[i+3] = c.A
+ s := p.Pix[i : i+4 : i+4] // Small cap improves performance, see https://golang.org/issue/27857
+ s[0] = c.R
+ s[1] = c.G
+ s[2] = c.B
+ s[3] = c.A
}
// SubImage returns an image representing the portion of the image p visible
@@ -390,11 +399,12 @@ func (p *NRGBA64) NRGBA64At(x, y int) color.NRGBA64 {
return color.NRGBA64{}
}
i := p.PixOffset(x, y)
+ s := p.Pix[i : i+8 : i+8] // Small cap improves performance, see https://golang.org/issue/27857
return color.NRGBA64{
- uint16(p.Pix[i+0])<<8 | uint16(p.Pix[i+1]),
- uint16(p.Pix[i+2])<<8 | uint16(p.Pix[i+3]),
- uint16(p.Pix[i+4])<<8 | uint16(p.Pix[i+5]),
- uint16(p.Pix[i+6])<<8 | uint16(p.Pix[i+7]),
+ uint16(s[0])<<8 | uint16(s[1]),
+ uint16(s[2])<<8 | uint16(s[3]),
+ uint16(s[4])<<8 | uint16(s[5]),
+ uint16(s[6])<<8 | uint16(s[7]),
}
}
@@ -410,14 +420,15 @@ func (p *NRGBA64) Set(x, y int, c color.Color) {
}
i := p.PixOffset(x, y)
c1 := color.NRGBA64Model.Convert(c).(color.NRGBA64)
- p.Pix[i+0] = uint8(c1.R >> 8)
- p.Pix[i+1] = uint8(c1.R)
- p.Pix[i+2] = uint8(c1.G >> 8)
- p.Pix[i+3] = uint8(c1.G)
- p.Pix[i+4] = uint8(c1.B >> 8)
- p.Pix[i+5] = uint8(c1.B)
- p.Pix[i+6] = uint8(c1.A >> 8)
- p.Pix[i+7] = uint8(c1.A)
+ s := p.Pix[i : i+8 : i+8] // Small cap improves performance, see https://golang.org/issue/27857
+ s[0] = uint8(c1.R >> 8)
+ s[1] = uint8(c1.R)
+ s[2] = uint8(c1.G >> 8)
+ s[3] = uint8(c1.G)
+ s[4] = uint8(c1.B >> 8)
+ s[5] = uint8(c1.B)
+ s[6] = uint8(c1.A >> 8)
+ s[7] = uint8(c1.A)
}
func (p *NRGBA64) SetNRGBA64(x, y int, c color.NRGBA64) {
@@ -425,14 +436,15 @@ func (p *NRGBA64) SetNRGBA64(x, y int, c color.NRGBA64) {
return
}
i := p.PixOffset(x, y)
- p.Pix[i+0] = uint8(c.R >> 8)
- p.Pix[i+1] = uint8(c.R)
- p.Pix[i+2] = uint8(c.G >> 8)
- p.Pix[i+3] = uint8(c.G)
- p.Pix[i+4] = uint8(c.B >> 8)
- p.Pix[i+5] = uint8(c.B)
- p.Pix[i+6] = uint8(c.A >> 8)
- p.Pix[i+7] = uint8(c.A)
+ s := p.Pix[i : i+8 : i+8] // Small cap improves performance, see https://golang.org/issue/27857
+ s[0] = uint8(c.R >> 8)
+ s[1] = uint8(c.R)
+ s[2] = uint8(c.G >> 8)
+ s[3] = uint8(c.G)
+ s[4] = uint8(c.B >> 8)
+ s[5] = uint8(c.B)
+ s[6] = uint8(c.A >> 8)
+ s[7] = uint8(c.A)
}
// SubImage returns an image representing the portion of the image p visible
@@ -850,7 +862,8 @@ func (p *CMYK) CMYKAt(x, y int) color.CMYK {
return color.CMYK{}
}
i := p.PixOffset(x, y)
- return color.CMYK{p.Pix[i+0], p.Pix[i+1], p.Pix[i+2], p.Pix[i+3]}
+ s := p.Pix[i : i+4 : i+4] // Small cap improves performance, see https://golang.org/issue/27857
+ return color.CMYK{s[0], s[1], s[2], s[3]}
}
// PixOffset returns the index of the first element of Pix that corresponds to
@@ -865,10 +878,11 @@ func (p *CMYK) Set(x, y int, c color.Color) {
}
i := p.PixOffset(x, y)
c1 := color.CMYKModel.Convert(c).(color.CMYK)
- p.Pix[i+0] = c1.C
- p.Pix[i+1] = c1.M
- p.Pix[i+2] = c1.Y
- p.Pix[i+3] = c1.K
+ s := p.Pix[i : i+4 : i+4] // Small cap improves performance, see https://golang.org/issue/27857
+ s[0] = c1.C
+ s[1] = c1.M
+ s[2] = c1.Y
+ s[3] = c1.K
}
func (p *CMYK) SetCMYK(x, y int, c color.CMYK) {
@@ -876,10 +890,11 @@ func (p *CMYK) SetCMYK(x, y int, c color.CMYK) {
return
}
i := p.PixOffset(x, y)
- p.Pix[i+0] = c.C
- p.Pix[i+1] = c.M
- p.Pix[i+2] = c.Y
- p.Pix[i+3] = c.K
+ s := p.Pix[i : i+4 : i+4] // Small cap improves performance, see https://golang.org/issue/27857
+ s[0] = c.C
+ s[1] = c.M
+ s[2] = c.Y
+ s[3] = c.K
}
// SubImage returns an image representing the portion of the image p visible
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-15 07:44:07 +0000