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// Copyright 2012 The Freetype-Go Authors. All rights reserved.
// Use of this source code is governed by your choice of either the
// FreeType License or the GNU General Public License version 2 (or
// any later version), both of which can be found in the LICENSE file.
package freetype
import (
"image"
"image/draw"
"io/ioutil"
"runtime"
"strings"
"testing"
)
func BenchmarkDrawString(b *testing.B) {
data, err := ioutil.ReadFile("licenses/gpl.txt")
if err != nil {
b.Fatal(err)
}
lines := strings.Split(string(data), "\n")
data, err = ioutil.ReadFile("testdata/luxisr.ttf")
if err != nil {
b.Fatal(err)
}
f, err := ParseFont(data)
if err != nil {
b.Fatal(err)
}
dst := image.NewRGBA(image.Rect(0, 0, 800, 600))
draw.Draw(dst, dst.Bounds(), image.White, image.ZP, draw.Src)
c := NewContext()
c.SetDst(dst)
c.SetClip(dst.Bounds())
c.SetSrc(image.Black)
c.SetFont(f)
var ms runtime.MemStats
runtime.ReadMemStats(&ms)
mallocs := ms.Mallocs
b.ResetTimer()
for i := 0; i < b.N; i++ {
for j, line := range lines {
_, err := c.DrawString(line, Pt(0, (j*16)%600))
if err != nil {
b.Fatal(err)
}
}
}
b.StopTimer()
runtime.ReadMemStats(&ms)
mallocs = ms.Mallocs - mallocs
b.Logf("%d iterations, %d mallocs per iteration\n", b.N, int(mallocs)/b.N)
}
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