diff options
Diffstat (limited to 'libgo/go/image/draw/draw.go')
| -rw-r--r-- | libgo/go/image/draw/draw.go | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/libgo/go/image/draw/draw.go b/libgo/go/image/draw/draw.go index 932a5444831..8f96aa2d180 100644 --- a/libgo/go/image/draw/draw.go +++ b/libgo/go/image/draw/draw.go @@ -180,9 +180,25 @@ func DrawMask(dst Image, r image.Rectangle, src image.Image, sp image.Point, mas drawRGBA(dst0, r, src, sp, mask, mp, op) return case *image.Paletted: - if op == Src && mask == nil && !processBackward(dst, r, src, sp) { - drawPaletted(dst0, r, src, sp, false) - return + if op == Src && mask == nil { + if src0, ok := src.(*image.Uniform); ok { + colorIndex := uint8(dst0.Palette.Index(src0.C)) + i0 := dst0.PixOffset(r.Min.X, r.Min.Y) + i1 := i0 + r.Dx() + for i := i0; i < i1; i++ { + dst0.Pix[i] = colorIndex + } + firstRow := dst0.Pix[i0:i1] + for y := r.Min.Y + 1; y < r.Max.Y; y++ { + i0 += dst0.Stride + i1 += dst0.Stride + copy(dst0.Pix[i0:i1], firstRow) + } + return + } else if !processBackward(dst, r, src, sp) { + drawPaletted(dst0, r, src, sp, false) + return + } } } |