optimize Text.Write (remove one allocation)
@@ -43,6 +43,7 @@ type Text struct {
prevR rune
atlas atlas
+ glyph pixel.TrianglesData
tris pixel.TrianglesData
d pixel.Drawer
}
@@ -57,6 +58,7 @@ func New(face font.Face, runeSets ...[]rune) *Text {
color: pixel.Alpha(1),
atlas: makeAtlas(face, runes),
}
+ txt.glyph.SetLen(6)
txt.d.Picture = txt.atlas.pic
txt.d.Triangles = &txt.tris
@@ -82,10 +84,9 @@ func (txt *Text) Write(p []byte) (n int, err error) {
n = len(p)
- glyphTris := make(pixel.TrianglesData, 6)
- for i := range glyphTris {
- glyphTris[i].Color = txt.color
- glyphTris[i].Intensity = 1
+ for i := range txt.glyph {
+ txt.glyph[i].Color = txt.color
+ txt.glyph[i].Intensity = 1
}
for len(p) > 0 {
@@ -120,11 +121,11 @@ func (txt *Text) Write(p []byte) (n int, err error) {
d := pixel.V(glyph.frame.Min.X(), glyph.frame.Max.Y())
for i, v := range []pixel.Vec{a, b, c, a, c, d} {
- glyphTris[i].Position = v - glyph.orig + txt.Dot
- glyphTris[i].Picture = v
+ txt.glyph[i].Position = v - glyph.orig + txt.Dot
+ txt.glyph[i].Picture = v
}
- txt.tris = append(txt.tris, glyphTris...)
+ txt.tris = append(txt.tris, txt.glyph...)
txt.Dot += pixel.X(glyph.advance)
txt.prevR = r
