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Avoid heap allocating in GetTextRuns+Perf notes+pprof by default

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bloeys
2022-07-08 08:44:57 +04:00
parent d8289139d3
commit cb2ead0907
4 changed files with 49 additions and 38 deletions
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48
main.go
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@ -2,7 +2,10 @@ package main
import (
"fmt"
"math"
"math/rand"
"os"
"runtime/pprof"
"github.com/bloeys/gglm/gglm"
"github.com/bloeys/nmage/engine"
@ -10,6 +13,7 @@ import (
"github.com/bloeys/nmage/materials"
"github.com/bloeys/nmage/meshes"
"github.com/bloeys/nmage/renderer/rend3dgl"
"github.com/bloeys/nmage/timing"
nmageimgui "github.com/bloeys/nmage/ui/imgui"
"github.com/bloeys/nterm/glyphs"
"github.com/golang/freetype/truetype"
@ -74,12 +78,11 @@ func main() {
//Don't flash white
p.win.SDLWin.GLSwap()
// var pf, _ = os.Create("pprof.cpu")
// defer pf.Close()
// pprof.StartCPUProfile(pf)
var pf, _ = os.Create("pprof.cpu")
defer pf.Close()
pprof.StartCPUProfile(pf)
engine.Run(p, p.win, p.imguiInfo)
// pprof.StopCPUProfile()
pprof.StopCPUProfile()
}
func (p *program) Init() {
@ -164,7 +167,8 @@ func (p *program) Update() {
imgui.InputText("", &textToShow)
if imgui.Button("Print Runs") {
runs := p.GlyphRend.GetTextRuns(textToShow)
runs := make([]glyphs.TextRun, 0, 20)
p.GlyphRend.GetTextRuns(textToShow, &runs)
for _, run := range runs {
fmt.Printf("%s; runes: %#x\n\n", string(run.Runes), run.Runes)
}
@ -179,9 +183,12 @@ func (p *program) Update() {
p.GlyphRend.GlyphMat.SetUnifInt32("drawBounds", 0)
}
}
imgui.Checkbox("Draw many", &drawManyLines)
}
var isDrawingBounds = false
var drawManyLines = false
var textToShow = " Hello there يا friend. اسمي عمر wow!"
var xOff float32 = 0
@ -215,23 +222,22 @@ func (p *program) Render() {
b = 0
}
textColor := gglm.NewVec4(r, g, b, 1)
str := textToShow
// str := "مرحبا بك my friend"
// str := "my, friend"
// str := " hello there يا friend. أسمي عمر wow"
// str := " ijojo\n\n Hello there, friend|. pq?\n ABCDEFG\tHIJKLMNOPQRSTUVWXYZ\nمرحبا بك"
// str := " ijojo\n\n Hello there, friend|. pq?\n ABCDEFG\tHIJKLMNOPQRSTUVWXYZ"
charCount := len([]rune(str))
fps := int(timing.GetAvgFPS())
textColor := gglm.NewVec4(r, g, b, 1)
if drawManyLines {
p.GlyphRend.DrawTextOpenGLAbs(str, gglm.NewVec3(xOff, float32(p.GlyphRend.Atlas.LineHeight)*5+yOff, 0), textColor)
// strLen := len(str)
// const charsPerFrame = 100_000
// for i := 0; i < charsPerFrame/strLen; i++ {
// p.GlyphRend.DrawTextOpenGLAbs(str, gglm.NewVec3(xOff, float32(p.GlyphRend.Atlas.LineHeight)*8+yOff, 0), textColor)
// }
// fps := int(timing.GetAvgFPS())
// p.win.SDLWin.SetTitle(fmt.Sprint("FPS: ", fps, " Draws/f: ", math.Ceil(charsPerFrame/glyphs.MaxGlyphsPerBatch), " chars/f: ", charsPerFrame, " chars/s: ", fps*charsPerFrame))
const charsPerFrame = 500_000
for i := 0; i < charsPerFrame/charCount; i++ {
p.GlyphRend.DrawTextOpenGLAbs(str, gglm.NewVec3(xOff, float32(p.GlyphRend.Atlas.LineHeight)*5+yOff, 0), textColor)
}
p.win.SDLWin.SetTitle(fmt.Sprint("FPS: ", fps, " Draws/f: ", math.Ceil(charsPerFrame/glyphs.MaxGlyphsPerBatch), " chars/f: ", charsPerFrame, " chars/s: ", fps*charsPerFrame))
} else {
charsPerFrame := float64(charCount)
p.GlyphRend.DrawTextOpenGLAbs(str, gglm.NewVec3(xOff, float32(p.GlyphRend.Atlas.LineHeight)*5+yOff, 0), textColor)
p.win.SDLWin.SetTitle(fmt.Sprint("FPS: ", fps, " Draws/f: ", math.Ceil(charsPerFrame/glyphs.MaxGlyphsPerBatch), " chars/f: ", charsPerFrame, " chars/s: ", fps*int(charsPerFrame)))
}
}