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op/clip: split Rect into pixel-aligned Rect and rounded RRect

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The pixel-aligned Rect is more efficient and easier to use in the common case
of layout clipping.

Signed-off-by: Elias Naur <mail@eliasnaur.com>
This commit is contained in:
Elias Naur
2020-07-09 18:06:00 +02:00
parent 4818538ef8
commit d572aa23ac
14 changed files with 105 additions and 116 deletions
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gpu/gpu.go
+13 -12
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@@ -116,6 +116,7 @@ type material struct {
// clipOp is the shadow of clip.Op.
type clipOp struct {
// TODO: Use image.Rectangle?
bounds f32.Rectangle
}
@@ -131,18 +132,18 @@ func (op *clipOp) decode(data []byte) {
panic("invalid op")
}
bo := binary.LittleEndian
r := f32.Rectangle{
Min: f32.Point{
X: math.Float32frombits(bo.Uint32(data[1:])),
Y: math.Float32frombits(bo.Uint32(data[5:])),
r := image.Rectangle{
Min: image.Point{
X: int(int32(bo.Uint32(data[1:]))),
Y: int(int32(bo.Uint32(data[5:]))),
},
Max: f32.Point{
X: math.Float32frombits(bo.Uint32(data[9:])),
Y: math.Float32frombits(bo.Uint32(data[13:])),
Max: image.Point{
X: int(int32(bo.Uint32(data[9:]))),
Y: int(int32(bo.Uint32(data[13:]))),
},
}
*op = clipOp{
bounds: r,
bounds: layout.FRect(r),
}
}
@@ -158,12 +159,12 @@ func decodeImageOp(data []byte, refs []interface{}) imageOpData {
return imageOpData{
rect: image.Rectangle{
Min: image.Point{
X: int(bo.Uint32(data[1:])),
Y: int(bo.Uint32(data[5:])),
X: int(int32(bo.Uint32(data[1:]))),
Y: int(int32(bo.Uint32(data[5:]))),
},
Max: image.Point{
X: int(bo.Uint32(data[9:])),
Y: int(bo.Uint32(data[13:])),
X: int(int32(bo.Uint32(data[9:]))),
Y: int(int32(bo.Uint32(data[13:]))),
},
},
src: refs[0].(*image.RGBA),