joejulian/gio
1
0
Fork 1
mirror of https://git.sr.ht/~eliasnaur/gio synced 2026-07-05 09:25:38 +00:00
Code Issues Packages Projects Releases Wiki Activity

internal/ops: switch quad encoding to compute format

Browse Source 
Signed-off-by: Elias Naur <mail@eliasnaur.com>
This commit is contained in:
Elias Naur
2021-03-11 10:41:47 +01:00
parent 9366fce0f3
commit 07572387e3
3 changed files with 24 additions and 25 deletions
Download Patch File Download Diff File Expand all files Collapse all files
internal/ops/ops.go
+7 -20
View File
@@ -5,12 +5,15 @@ package ops
import (
"encoding/binary"
"math"
"unsafe"
"gioui.org/f32"
"gioui.org/internal/byteslice"
"gioui.org/internal/opconst"
"gioui.org/internal/scene"
)
const QuadSize = 4 * 2 * 3
const QuadSize = int(unsafe.Sizeof(scene.Command{}))
type Quad struct {
From, Ctrl, To f32.Point
@@ -23,26 +26,10 @@ func (q Quad) Transform(t f32.Affine2D) Quad {
return q
}
func EncodeQuad(d []byte, q Quad) {
d = d[:24]
bo := binary.LittleEndian
bo.PutUint32(d[0:], math.Float32bits(q.From.X))
bo.PutUint32(d[4:], math.Float32bits(q.From.Y))
bo.PutUint32(d[8:], math.Float32bits(q.Ctrl.X))
bo.PutUint32(d[12:], math.Float32bits(q.Ctrl.Y))
bo.PutUint32(d[16:], math.Float32bits(q.To.X))
bo.PutUint32(d[20:], math.Float32bits(q.To.Y))
}
func DecodeQuad(d []byte) (q Quad) {
d = d[:24]
bo := binary.LittleEndian
q.From.X = math.Float32frombits(bo.Uint32(d[0:]))
q.From.Y = math.Float32frombits(bo.Uint32(d[4:]))
q.Ctrl.X = math.Float32frombits(bo.Uint32(d[8:]))
q.Ctrl.Y = math.Float32frombits(bo.Uint32(d[12:]))
q.To.X = math.Float32frombits(bo.Uint32(d[16:]))
q.To.Y = math.Float32frombits(bo.Uint32(d[20:]))
var cmd scene.Command
copy(byteslice.Slice(cmd[:]), d)
q.From, q.Ctrl, q.To = scene.DecodeQuad(cmd)
return
}
internal/scene/scene.go
+10
View File
@@ -123,3 +123,13 @@ func FillImage(index int) Command {
1: uint32(index),
}
}
func DecodeQuad(cmd Command) (from, ctrl, to f32.Point) {
if cmd[0] != elemFillQuad {
panic("invalid command")
}
from = f32.Pt(math.Float32frombits(cmd[1]), math.Float32frombits(cmd[2]))
ctrl = f32.Pt(math.Float32frombits(cmd[3]), math.Float32frombits(cmd[4]))
to = f32.Pt(math.Float32frombits(cmd[5]), math.Float32frombits(cmd[6]))
return
}