Merge 1dd96726c4 into 17322c9c3b

Closes #3066

.clang-format

@@ -0,0 +1 @@
+CommentPragmas: '^go:build'

.github/workflows/test.yml

@@ -7,7 +7,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        go: ['1.19.x', '1.20.x', '1.21.x', '1.22.x', '1.23.0-rc.2']
+        go: ['1.19.x', '1.20.x', '1.21.x', '1.22.x', '1.23.x']
     name: Test with Go ${{ matrix.go }} on ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
     env:
@@ -42,9 +42,12 @@ jobs:
           sudo apt-get update
           sudo apt-get install libasound2-dev libgl1-mesa-dev libxcursor-dev libxi-dev libxinerama-dev libxrandr-dev libxxf86vm-dev
 
+      - name: Install Chrome
+        uses: browser-actions/setup-chrome@latest
+
       - name: Install wasmbrowsertest
         run: |
-          wasmbrowsertest_version=6e494bb3a5ddfe6cccb449250dbdcaa5777b593d
+          wasmbrowsertest_version=06679196c7e76f227e71456cdc16fccd6cc33601
           go install github.com/agnivade/wasmbrowsertest@${wasmbrowsertest_version}
           mv $(go env GOPATH)/bin/wasmbrowsertest${{ runner.os == 'Windows' && '.exe' || '' }} $(go env GOPATH)/bin/go_js_wasm_exec${{ runner.os == 'Windows' && '.exe' || '' }}
           go install github.com/agnivade/wasmbrowsertest/cmd/cleanenv@${wasmbrowsertest_version}
@@ -150,7 +153,7 @@ jobs:
         if: runner.os == 'Linux'
         run: |
           sudo apt-get install libgles2-mesa-dev
-          env EBITENGINE_GRAPHICS_LIBRARY=opengl EBITENGINE_OPENGL=es go test -shuffle=on -v -p=1 ./...
+          env EBITENGINE_GRAPHICS_LIBRARY=opengl go test -shuffle=on -v -p=1 ./...
 
       - name: go test (Windows)
         if: runner.os == 'Windows'
@@ -165,10 +168,9 @@ jobs:
           env GOARCH=386 EBITENGINE_DIRECTX=version=12 go test -shuffle=on -v ./...
 
       - name: go test (Wasm)
-        if: ${{ runner.os != 'macOS' && runner.os != 'Windows' }}
+        if: runner.os != 'macOS'
         run: |
           # Wasm tests don't work on macOS with the headless mode enabled, but the headless mode cannot be disabled in GitHub Actions (#2972).
-          # Wasm tests don't work on Windows well due to mysterious timeouts (#2982).
           env GOOS=js GOARCH=wasm cleanenv -remove-prefix GITHUB_ -remove-prefix JAVA_ -remove-prefix PSModulePath -remove-prefix STATS_ -remove-prefix RUNNER_ -- go test -shuffle=on -v ./...
 
       - name: Install ebitenmobile

audio/audio_test.go

@@ -17,7 +17,6 @@ package audio_test
 import (
 	"bytes"
 	"io"
-	"os"
 	"runtime"
 	"testing"
 	"time"
@@ -36,14 +35,6 @@ func teardown() {
 	context = nil
 }
 
-func TestMain(m *testing.M) {
-	code := m.Run()
-	// 200[ms] should be enough all the players are consumed.
-	// TODO: This is a dirty hack. Would it be possible to use virtual time?
-	time.Sleep(200 * time.Millisecond)
-	os.Exit(code)
-}
-
 // Issue #746
 func TestGC(t *testing.T) {
 	setup()

audio/internal/convert/float32_test.go

@@ -18,22 +18,12 @@ import (
 	"bytes"
 	"io"
 	"math/rand" // TODO: Use math/rand/v2 when the minimum supported version becomes Go 1.22.
-	"os"
 	"testing"
-	"time"
 	"unsafe"
 
 	"github.com/hajimehoshi/ebiten/v2/audio/internal/convert"
 )
 
-func TestMain(m *testing.M) {
-	code := m.Run()
-	// Tests in this package often fails on GitHub Actions due to unfinished goroutines.
-	// That's mysterious, but to avoid this, sleep for a while before exiting.
-	time.Sleep(200 * time.Millisecond)
-	os.Exit(code)
-}
-
 func randInt16s(n int) []int16 {
 	r := make([]int16, n)
 	for i := range r {

doc.go

@@ -93,11 +93,6 @@
 // The option "featurelevel" is valid only for DirectX 12.
 // The possible values are "11_0", "11_1", "12_0", "12_1", and "12_2". The default value is "11_0".
 //
-// `EBITENGINE_OPENGL` environment variable specifies various parameters for OpenGL.
-// You can specify multiple values separated by a comma. The default value is empty (i.e. no parameters).
-//
-//	"es": Use OpenGL ES. Without this, OpenGL and OpenGL ES are automatically chosen.
-//
 // # Build tags
 //
 // `ebitenginedebug` outputs a log of graphics commands. This is useful to know what happens in Ebitengine. In general, the

ebitenutil/gen.go

@@ -17,6 +17,7 @@
 package main
 
 import (
+	"bufio"
 	"fmt"
 	"image"
 	"image/color"
@@ -77,7 +78,11 @@ func run() error {
 	}
 	defer f.Close()
 
-	if err := png.Encode(f, dst); err != nil {
+	w := bufio.NewWriter(f)
+	if err := png.Encode(w, dst); err != nil {
+		return err
+	}
+	if err := w.Flush(); err != nil {
 		return err
 	}
 

examples/blocks/main.go

@@ -15,6 +15,7 @@
 package main
 
 import (
+	"bufio"
 	"flag"
 	"log"
 	"os"
@@ -33,9 +34,15 @@ func main() {
 		if err != nil {
 			log.Fatal(err)
 		}
-		if err := pprof.StartCPUProfile(f); err != nil {
+		w := bufio.NewWriter(f)
+		if err := pprof.StartCPUProfile(w); err != nil {
 			log.Fatal(err)
 		}
+		defer func() {
+			if err := w.Flush(); err != nil {
+				log.Fatal(err)
+			}
+		}()
 		defer pprof.StopCPUProfile()
 	}
 

examples/keyboard/keyboard/gen.go

@@ -17,6 +17,7 @@
 package main
 
 import (
+	"bufio"
 	"bytes"
 	"image"
 	"image/png"
@@ -220,7 +221,11 @@ func outputKeyboardImage() (map[ebiten.Key]image.Rectangle, error) {
 	}
 	defer out.Close()
 
-	if err := png.Encode(out, img); err != nil {
+	w := bufio.NewWriter(out)
+	if err := png.Encode(w, img); err != nil {
+		return nil, err
+	}
+	if err := w.Flush(); err != nil {
 		return nil, err
 	}
 
@@ -278,10 +283,17 @@ func outputKeyRectsGo(k map[ebiten.Key]image.Rectangle) error {
 	if err != nil {
 		return err
 	}
-	return tmpl.Execute(f, map[string]any{
+	w := bufio.NewWriter(f)
+	if err := tmpl.Execute(w, map[string]any{
 		"License":     license,
 		"KeyRectsMap": k,
-	})
+	}); err != nil {
+		return err
+	}
+	if err := w.Flush(); err != nil {
+		return err
+	}
+	return nil
 }
 
 type game struct {

examples/shaderprecomp/fxc/gen.go

@@ -20,6 +20,7 @@
 package main
 
 import (
+	"bufio"
 	"errors"
 	"fmt"
 	"os"
@@ -88,7 +89,15 @@ func generateHSLSFiles(source *shaderprecomp.ShaderSource, index int, tmpdir str
 	}
 	defer psf.Close()
 
-	if err := shaderprecomp.CompileToHLSL(vsf, psf, source); err != nil {
+	vsfw := bufio.NewWriter(vsf)
+	psfw := bufio.NewWriter(psf)
+	if err := shaderprecomp.CompileToHLSL(vsfw, psfw, source); err != nil {
+		return "", "", err
+	}
+	if err := vsfw.Flush(); err != nil {
+		return "", "", err
+	}
+	if err := psfw.Flush(); err != nil {
 		return "", "", err
 	}
 

examples/shaderprecomp/metallib/gen.go

@@ -20,6 +20,7 @@
 package main
 
 import (
+	"bufio"
 	"fmt"
 	"os"
 	"os/exec"
@@ -68,10 +69,11 @@ func compile(source *shaderprecomp.ShaderSource, index int, tmpdir string) error
 	}
 	defer f.Close()
 
-	if err := shaderprecomp.CompileToMSL(f, source); err != nil {
+	w := bufio.NewWriter(f)
+	if err := shaderprecomp.CompileToMSL(w, source); err != nil {
 		return err
 	}
-	if err := f.Sync(); err != nil {
+	if err := w.Flush(); err != nil {
 		return err
 	}
 

examples/vector/main.go

@@ -44,7 +44,17 @@ const (
 	screenHeight = 480
 )
 
-func drawEbitenText(screen *ebiten.Image, x, y int, aa bool, line bool) {
+type Game struct {
+	counter int
+
+	aa   bool
+	line bool
+
+	vertices []ebiten.Vertex
+	indices  []uint16
+}
+
+func (g *Game) drawEbitenText(screen *ebiten.Image, x, y int, aa bool, line bool) {
 	var path vector.Path
 
 	// E
@@ -116,26 +126,24 @@ func drawEbitenText(screen *ebiten.Image, x, y int, aa bool, line bool) {
 	path.LineTo(290, 20)
 	path.Close()
 
-	var vs []ebiten.Vertex
-	var is []uint16
 	if line {
 		op := &vector.StrokeOptions{}
 		op.Width = 5
 		op.LineJoin = vector.LineJoinRound
-		vs, is = path.AppendVerticesAndIndicesForStroke(nil, nil, op)
+		g.vertices, g.indices = path.AppendVerticesAndIndicesForStroke(g.vertices[:0], g.indices[:0], op)
 	} else {
-		vs, is = path.AppendVerticesAndIndicesForFilling(nil, nil)
+		g.vertices, g.indices = path.AppendVerticesAndIndicesForFilling(g.vertices[:0], g.indices[:0])
 	}
 
-	for i := range vs {
-		vs[i].DstX = (vs[i].DstX + float32(x))
-		vs[i].DstY = (vs[i].DstY + float32(y))
-		vs[i].SrcX = 1
-		vs[i].SrcY = 1
-		vs[i].ColorR = 0xdb / float32(0xff)
-		vs[i].ColorG = 0x56 / float32(0xff)
-		vs[i].ColorB = 0x20 / float32(0xff)
-		vs[i].ColorA = 1
+	for i := range g.vertices {
+		g.vertices[i].DstX = (g.vertices[i].DstX + float32(x))
+		g.vertices[i].DstY = (g.vertices[i].DstY + float32(y))
+		g.vertices[i].SrcX = 1
+		g.vertices[i].SrcY = 1
+		g.vertices[i].ColorR = 0xdb / float32(0xff)
+		g.vertices[i].ColorG = 0x56 / float32(0xff)
+		g.vertices[i].ColorB = 0x20 / float32(0xff)
+		g.vertices[i].ColorA = 1
 	}
 
 	op := &ebiten.DrawTrianglesOptions{}
@@ -150,10 +158,10 @@ func drawEbitenText(screen *ebiten.Image, x, y int, aa bool, line bool) {
 	// For simplicity, this example always uses FillRuleNonZero, whichever strokes or filling is done.
 	op.FillRule = ebiten.FillRuleNonZero
 
-	screen.DrawTriangles(vs, is, whiteSubImage, op)
+	screen.DrawTriangles(g.vertices, g.indices, whiteSubImage, op)
 }
 
-func drawEbitenLogo(screen *ebiten.Image, x, y int, aa bool, line bool) {
+func (g *Game) drawEbitenLogo(screen *ebiten.Image, x, y int, aa bool, line bool) {
 	const unit = 16
 
 	var path vector.Path
@@ -179,35 +187,33 @@ func drawEbitenLogo(screen *ebiten.Image, x, y int, aa bool, line bool) {
 	path.LineTo(unit, 4*unit)
 	path.Close()
 
-	var vs []ebiten.Vertex
-	var is []uint16
 	if line {
 		op := &vector.StrokeOptions{}
 		op.Width = 5
 		op.LineJoin = vector.LineJoinRound
-		vs, is = path.AppendVerticesAndIndicesForStroke(nil, nil, op)
+		g.vertices, g.indices = path.AppendVerticesAndIndicesForStroke(g.vertices[:0], g.indices[:0], op)
 	} else {
-		vs, is = path.AppendVerticesAndIndicesForFilling(nil, nil)
+		g.vertices, g.indices = path.AppendVerticesAndIndicesForFilling(g.vertices[:0], g.indices[:0])
 	}
 
-	for i := range vs {
-		vs[i].DstX = (vs[i].DstX + float32(x))
-		vs[i].DstY = (vs[i].DstY + float32(y))
-		vs[i].SrcX = 1
-		vs[i].SrcY = 1
-		vs[i].ColorR = 0xdb / float32(0xff)
-		vs[i].ColorG = 0x56 / float32(0xff)
-		vs[i].ColorB = 0x20 / float32(0xff)
-		vs[i].ColorA = 1
+	for i := range g.vertices {
+		g.vertices[i].DstX = (g.vertices[i].DstX + float32(x))
+		g.vertices[i].DstY = (g.vertices[i].DstY + float32(y))
+		g.vertices[i].SrcX = 1
+		g.vertices[i].SrcY = 1
+		g.vertices[i].ColorR = 0xdb / float32(0xff)
+		g.vertices[i].ColorG = 0x56 / float32(0xff)
+		g.vertices[i].ColorB = 0x20 / float32(0xff)
+		g.vertices[i].ColorA = 1
 	}
 
 	op := &ebiten.DrawTrianglesOptions{}
 	op.AntiAlias = aa
 	op.FillRule = ebiten.FillRuleNonZero
-	screen.DrawTriangles(vs, is, whiteSubImage, op)
+	screen.DrawTriangles(g.vertices, g.indices, whiteSubImage, op)
 }
 
-func drawArc(screen *ebiten.Image, count int, aa bool, line bool) {
+func (g *Game) drawArc(screen *ebiten.Image, count int, aa bool, line bool) {
 	var path vector.Path
 
 	path.MoveTo(350, 100)
@@ -223,37 +229,35 @@ func drawArc(screen *ebiten.Image, count int, aa bool, line bool) {
 	path.Arc(550, 100, 50, float32(theta1), float32(theta2), vector.Clockwise)
 	path.Close()
 
-	var vs []ebiten.Vertex
-	var is []uint16
 	if line {
 		op := &vector.StrokeOptions{}
 		op.Width = 5
 		op.LineJoin = vector.LineJoinRound
-		vs, is = path.AppendVerticesAndIndicesForStroke(nil, nil, op)
+		g.vertices, g.indices = path.AppendVerticesAndIndicesForStroke(g.vertices[:0], g.indices[:0], op)
 	} else {
-		vs, is = path.AppendVerticesAndIndicesForFilling(nil, nil)
+		g.vertices, g.indices = path.AppendVerticesAndIndicesForFilling(g.vertices[:0], g.indices[:0])
 	}
 
-	for i := range vs {
-		vs[i].SrcX = 1
-		vs[i].SrcY = 1
-		vs[i].ColorR = 0x33 / float32(0xff)
-		vs[i].ColorG = 0xcc / float32(0xff)
-		vs[i].ColorB = 0x66 / float32(0xff)
-		vs[i].ColorA = 1
+	for i := range g.vertices {
+		g.vertices[i].SrcX = 1
+		g.vertices[i].SrcY = 1
+		g.vertices[i].ColorR = 0x33 / float32(0xff)
+		g.vertices[i].ColorG = 0xcc / float32(0xff)
+		g.vertices[i].ColorB = 0x66 / float32(0xff)
+		g.vertices[i].ColorA = 1
 	}
 
 	op := &ebiten.DrawTrianglesOptions{}
 	op.AntiAlias = aa
 	op.FillRule = ebiten.FillRuleNonZero
-	screen.DrawTriangles(vs, is, whiteSubImage, op)
+	screen.DrawTriangles(g.vertices, g.indices, whiteSubImage, op)
 }
 
 func maxCounter(index int) int {
 	return 128 + (17*index+32)%64
 }
 
-func drawWave(screen *ebiten.Image, counter int, aa bool, line bool) {
+func (g *Game) drawWave(screen *ebiten.Image, counter int, aa bool, line bool) {
 	var path vector.Path
 
 	const npoints = 8
@@ -278,37 +282,28 @@ func drawWave(screen *ebiten.Image, counter int, aa bool, line bool) {
 	path.LineTo(screenWidth, screenHeight)
 	path.LineTo(0, screenHeight)
 
-	var vs []ebiten.Vertex
-	var is []uint16
 	if line {
 		op := &vector.StrokeOptions{}
 		op.Width = 5
 		op.LineJoin = vector.LineJoinRound
-		vs, is = path.AppendVerticesAndIndicesForStroke(nil, nil, op)
+		g.vertices, g.indices = path.AppendVerticesAndIndicesForStroke(g.vertices[:0], g.indices[:0], op)
 	} else {
-		vs, is = path.AppendVerticesAndIndicesForFilling(nil, nil)
+		g.vertices, g.indices = path.AppendVerticesAndIndicesForFilling(g.vertices[:0], g.indices[:0])
 	}
 
-	for i := range vs {
-		vs[i].SrcX = 1
-		vs[i].SrcY = 1
-		vs[i].ColorR = 0x33 / float32(0xff)
-		vs[i].ColorG = 0x66 / float32(0xff)
-		vs[i].ColorB = 0xff / float32(0xff)
-		vs[i].ColorA = 1
+	for i := range g.vertices {
+		g.vertices[i].SrcX = 1
+		g.vertices[i].SrcY = 1
+		g.vertices[i].ColorR = 0x33 / float32(0xff)
+		g.vertices[i].ColorG = 0x66 / float32(0xff)
+		g.vertices[i].ColorB = 0xff / float32(0xff)
+		g.vertices[i].ColorA = 1
 	}
 
 	op := &ebiten.DrawTrianglesOptions{}
 	op.AntiAlias = aa
 	op.FillRule = ebiten.FillRuleNonZero
-	screen.DrawTriangles(vs, is, whiteSubImage, op)
-}
-
-type Game struct {
-	counter int
-
-	aa   bool
-	line bool
+	screen.DrawTriangles(g.vertices, g.indices, whiteSubImage, op)
 }
 
 func (g *Game) Update() error {
@@ -331,10 +326,10 @@ func (g *Game) Draw(screen *ebiten.Image) {
 	dst := screen
 
 	dst.Fill(color.RGBA{0xe0, 0xe0, 0xe0, 0xff})
-	drawEbitenText(dst, 0, 50, g.aa, g.line)
-	drawEbitenLogo(dst, 20, 150, g.aa, g.line)
-	drawArc(dst, g.counter, g.aa, g.line)
-	drawWave(dst, g.counter, g.aa, g.line)
+	g.drawEbitenText(dst, 0, 50, g.aa, g.line)
+	g.drawEbitenLogo(dst, 20, 150, g.aa, g.line)
+	g.drawArc(dst, g.counter, g.aa, g.line)
+	g.drawWave(dst, g.counter, g.aa, g.line)
 
 	msg := fmt.Sprintf("TPS: %0.2f\nFPS: %0.2f", ebiten.ActualTPS(), ebiten.ActualFPS())
 	msg += "\nPress A to switch anti-alias."

examples/video/main.go

@@ -15,6 +15,7 @@
 package main
 
 import (
+	"bufio"
 	"bytes"
 	_ "embed"
 	"fmt"
@@ -81,7 +82,7 @@ func main() {
 		fmt.Println("Play the default video. You can specify a video file as an argument.")
 	}
 
-	player, err := newMPEGPlayer(in)
+	player, err := newMPEGPlayer(bufio.NewReader(in))
 	if err != nil {
 		log.Fatal(err)
 	}

genkeys.go

@@ -19,6 +19,7 @@
 package main
 
 import (
+	"bufio"
 	"log"
 	"os"
 	"path/filepath"
@@ -809,7 +810,8 @@ func main() {
 			buildConstraints = "//go:build !android && !ios && !js && !nintendosdk && !playstation5"
 		}
 		// NOTE: According to godoc, maps are automatically sorted by key.
-		if err := tmpl.Execute(f, struct {
+		w := bufio.NewWriter(f)
+		if err := tmpl.Execute(w, struct {
 			License                         string
 			DoNotEdit                       string
 			BuildConstraints                string
@@ -840,5 +842,9 @@ func main() {
 		}); err != nil {
 			log.Fatal(err)
 		}
+
+		if err := w.Flush(); err != nil {
+			log.Fatal(err)
+		}
 	}
 }

go.mod

@@ -3,10 +3,10 @@ module github.com/hajimehoshi/ebiten/v2
 go 1.19
 
 require (
-	github.com/ebitengine/gomobile v0.0.0-20240518074828-e86332849895
+	github.com/ebitengine/gomobile v0.0.0-20240802043200-192f051f4fcc
 	github.com/ebitengine/hideconsole v1.0.0
-	github.com/ebitengine/oto/v3 v3.3.0-alpha.2
-	github.com/ebitengine/purego v0.8.0-alpha.3
+	github.com/ebitengine/oto/v3 v3.3.0-alpha.4
+	github.com/ebitengine/purego v0.8.0-alpha.4
 	github.com/gen2brain/mpeg v0.3.2-0.20240412154320-a2ac4fc8a46f
 	github.com/go-text/typesetting v0.1.1
 	github.com/hajimehoshi/bitmapfont/v3 v3.2.0-alpha.3
@@ -15,15 +15,15 @@ require (
 	github.com/jezek/xgb v1.1.1
 	github.com/jfreymuth/oggvorbis v1.0.5
 	github.com/kisielk/errcheck v1.7.0
-	golang.org/x/image v0.18.0
-	golang.org/x/sync v0.7.0
-	golang.org/x/sys v0.22.0
-	golang.org/x/text v0.16.0
-	golang.org/x/tools v0.23.0
+	golang.org/x/image v0.19.0
+	golang.org/x/sync v0.8.0
+	golang.org/x/sys v0.24.0
+	golang.org/x/text v0.17.0
+	golang.org/x/tools v0.24.0
 )
 
 require (
 	github.com/jfreymuth/vorbis v1.0.2 // indirect
 	github.com/pierrec/lz4/v4 v4.1.21 // indirect
-	golang.org/x/mod v0.19.0 // indirect
+	golang.org/x/mod v0.20.0 // indirect
 )

go.sum

@@ -1,11 +1,11 @@
-github.com/ebitengine/gomobile v0.0.0-20240518074828-e86332849895 h1:48bCqKTuD7Z0UovDfvpCn7wZ0GUZ+yosIteNDthn3FU=
-github.com/ebitengine/gomobile v0.0.0-20240518074828-e86332849895/go.mod h1:XZdLv05c5hOZm3fM2NlJ92FyEZjnslcMcNRrhxs8+8M=
+github.com/ebitengine/gomobile v0.0.0-20240802043200-192f051f4fcc h1:76TYsaP1F48tiQRlrr71NsbfxBcFM9/8bEHS9/JbsQg=
+github.com/ebitengine/gomobile v0.0.0-20240802043200-192f051f4fcc/go.mod h1:RM/c3pvru6dRqgGEW7RCTb6czFXYAa3MxbXu3u8/dcI=
 github.com/ebitengine/hideconsole v1.0.0 h1:5J4U0kXF+pv/DhiXt5/lTz0eO5ogJ1iXb8Yj1yReDqE=
 github.com/ebitengine/hideconsole v1.0.0/go.mod h1:hTTBTvVYWKBuxPr7peweneWdkUwEuHuB3C1R/ielR1A=
-github.com/ebitengine/oto/v3 v3.3.0-alpha.2 h1:ex2UbULSPuLt76yyaR2JBXICx83Ph6Oz5ugN7h1Jo/I=
-github.com/ebitengine/oto/v3 v3.3.0-alpha.2/go.mod h1:yYvXK7mgNwsFawY5RsvGI6yhMHtD+0MfaPkDTl9/uv8=
-github.com/ebitengine/purego v0.8.0-alpha.3 h1:qoFlpGuVwJ6J85kuj6Qpyp0DBgxsNYfSY9efidSNFgA=
-github.com/ebitengine/purego v0.8.0-alpha.3/go.mod h1:b94LtM1jUWDZPKDyENVhB0WsLdLWFApjbNw5AyxmKyI=
+github.com/ebitengine/oto/v3 v3.3.0-alpha.4 h1:w9SD7kK4GgJULkh5pWVTToMA5Ia1bP7VxD4rIjQqb8M=
+github.com/ebitengine/oto/v3 v3.3.0-alpha.4/go.mod h1:B+Sz3hzZXcx251YqSPIj+cVMicvlx7Xiq29AEUIbc7E=
+github.com/ebitengine/purego v0.8.0-alpha.4 h1:Dg9xRGC3giyQedfISyHH94eQM0md4a84+HHr7KBBH/Q=
+github.com/ebitengine/purego v0.8.0-alpha.4/go.mod h1:SQ56/omnSL8DdaBSKswoBvsMjgaWQyxyeMtb48sOskI=
 github.com/gen2brain/mpeg v0.3.2-0.20240412154320-a2ac4fc8a46f h1:ysqRe+lvUiL0dH5XzkH0Bz68bFMPJ4f5Si4L/HD9SGk=
 github.com/gen2brain/mpeg v0.3.2-0.20240412154320-a2ac4fc8a46f/go.mod h1:i/ebyRRv/IoHixuZ9bElZnXbmfoUVPGQpdsJ4sVuX38=
 github.com/go-text/typesetting v0.1.1 h1:bGAesCuo85nXnEN5LmFMVGAGpGkCPtHrZLi//qD7EJo=
@@ -37,15 +37,16 @@ golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5y
 golang.org/x/crypto v0.13.0/go.mod h1:y6Z2r+Rw4iayiXXAIxJIDAJ1zMW4yaTpebo8fPOliYc=
 golang.org/x/crypto v0.19.0/go.mod h1:Iy9bg/ha4yyC70EfRS8jz+B6ybOBKMaSxLj6P6oBDfU=
 golang.org/x/crypto v0.23.0/go.mod h1:CKFgDieR+mRhux2Lsu27y0fO304Db0wZe70UKqHu0v8=
-golang.org/x/image v0.18.0 h1:jGzIakQa/ZXI1I0Fxvaa9W7yP25TqT6cHIHn+6CqvSQ=
 golang.org/x/image v0.18.0/go.mod h1:4yyo5vMFQjVjUcVk4jEQcU9MGy/rulF5WvUILseCM2E=
+golang.org/x/image v0.19.0 h1:D9FX4QWkLfkeqaC62SonffIIuYdOk/UE2XKUBgRIBIQ=
+golang.org/x/image v0.19.0/go.mod h1:y0zrRqlQRWQ5PXaYCOMLTW2fpsxZ8Qh9I/ohnInJEys=
 golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
 golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
 golang.org/x/mod v0.12.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
 golang.org/x/mod v0.15.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
 golang.org/x/mod v0.17.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
-golang.org/x/mod v0.19.0 h1:fEdghXQSo20giMthA7cd28ZC+jts4amQ3YMXiP5oMQ8=
-golang.org/x/mod v0.19.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
+golang.org/x/mod v0.20.0 h1:utOm6MM3R3dnawAiJgn0y+xvuYRsm1RKM/4giyfDgV0=
+golang.org/x/mod v0.20.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
@@ -59,8 +60,9 @@ golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.3.0/go.mod h1:FU7BRWz2tNW+3quACPkgCx/L+uEAv1htQ0V83Z9Rj+Y=
 golang.org/x/sync v0.6.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
-golang.org/x/sync v0.7.0 h1:YsImfSBoP9QPYL0xyKJPq0gcaJdG3rInoqxTWbfQu9M=
 golang.org/x/sync v0.7.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
+golang.org/x/sync v0.8.0 h1:3NFvSEYkUoMifnESzZl15y791HH1qU2xm6eCJU5ZPXQ=
+golang.org/x/sync v0.8.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
@@ -73,8 +75,8 @@ golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.12.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.17.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/sys v0.20.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
-golang.org/x/sys v0.22.0 h1:RI27ohtqKCnwULzJLqkv897zojh5/DwS/ENaMzUOaWI=
-golang.org/x/sys v0.22.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.24.0 h1:Twjiwq9dn6R1fQcyiK+wQyHWfaz/BJB+YIpzU/Cv3Xg=
+golang.org/x/sys v0.24.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/telemetry v0.0.0-20240228155512-f48c80bd79b2/go.mod h1:TeRTkGYfJXctD9OcfyVLyj2J3IxLnKwHJR8f4D8a3YE=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
@@ -91,14 +93,15 @@ golang.org/x/text v0.9.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
 golang.org/x/text v0.13.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
 golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
 golang.org/x/text v0.15.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
-golang.org/x/text v0.16.0 h1:a94ExnEXNtEwYLGJSIUxnWoxoRz/ZcCsV63ROupILh4=
 golang.org/x/text v0.16.0/go.mod h1:GhwF1Be+LQoKShO3cGOHzqOgRrGaYc9AvblQOmPVHnI=
+golang.org/x/text v0.17.0 h1:XtiM5bkSOt+ewxlOE/aE/AKEHibwj/6gvWMl9Rsh0Qc=
+golang.org/x/text v0.17.0/go.mod h1:BuEKDfySbSR4drPmRPG/7iBdf8hvFMuRexcpahXilzY=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
 golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
 golang.org/x/tools v0.13.0/go.mod h1:HvlwmtVNQAhOuCjW7xxvovg8wbNq7LwfXh/k7wXUl58=
 golang.org/x/tools v0.21.1-0.20240508182429-e35e4ccd0d2d/go.mod h1:aiJjzUbINMkxbQROHiO6hDPo2LHcIPhhQsa9DLh0yGk=
-golang.org/x/tools v0.23.0 h1:SGsXPZ+2l4JsgaCKkx+FQ9YZ5XEtA1GZYuoDjenLjvg=
-golang.org/x/tools v0.23.0/go.mod h1:pnu6ufv6vQkll6szChhK3C3L/ruaIv5eBeztNG8wtsI=
+golang.org/x/tools v0.24.0 h1:J1shsA93PJUEVaUSaay7UXAyE8aimq3GW0pjlolpa24=
+golang.org/x/tools v0.24.0/go.mod h1:YhNqVBIfWHdzvTLs0d8LCuMhkKUgSUKldakyV7W/WDQ=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=

image.go

@@ -247,7 +247,7 @@ func (i *Image) DrawImage(img *Image, options *DrawImageOptions) {
 	colorm, cr, cg, cb, ca := colorMToScale(options.ColorM.affineColorM())
 	cr, cg, cb, ca = options.ColorScale.apply(cr, cg, cb, ca)
 	vs := i.ensureTmpVertices(4 * graphics.VertexFloatCount)
-	graphics.QuadVertices(vs, float32(sx0), float32(sy0), float32(sx1), float32(sy1), a, b, c, d, tx, ty, cr, cg, cb, ca)
+	graphics.QuadVerticesFromSrcAndMatrix(vs, float32(sx0), float32(sy0), float32(sx1), float32(sy1), a, b, c, d, tx, ty, cr, cg, cb, ca)
 	is := graphics.QuadIndices()
 
 	srcs := [graphics.ShaderSrcImageCount]*ui.Image{img.image}
@@ -829,7 +829,7 @@ func (i *Image) DrawRectShader(width, height int, shader *Shader, options *DrawR
 	vs := i.ensureTmpVertices(4 * graphics.VertexFloatCount)
 
 	// Do not use srcRegions[0].Dx() and srcRegions[0].Dy() as these might be empty.
-	graphics.QuadVertices(vs,
+	graphics.QuadVerticesFromSrcAndMatrix(vs,
 		float32(srcRegions[0].Min.X), float32(srcRegions[0].Min.Y),
 		float32(srcRegions[0].Min.X+width), float32(srcRegions[0].Min.Y+height),
 		a, b, c, d, tx, ty, cr, cg, cb, ca)

image_test.go

@@ -662,6 +662,59 @@ func BenchmarkDrawImage(b *testing.B) {
 	}
 }
 
+func BenchmarkDrawTriangles(b *testing.B) {
+	const w, h = 16, 16
+	img0 := ebiten.NewImage(w, h)
+	img1 := ebiten.NewImage(w, h)
+	op := &ebiten.DrawTrianglesOptions{}
+	vs := []ebiten.Vertex{
+		{
+			DstX:   0,
+			DstY:   0,
+			SrcX:   0,
+			SrcY:   0,
+			ColorR: 1,
+			ColorG: 1,
+			ColorB: 1,
+			ColorA: 1,
+		},
+		{
+			DstX:   w,
+			DstY:   0,
+			SrcX:   w,
+			SrcY:   0,
+			ColorR: 1,
+			ColorG: 1,
+			ColorB: 1,
+			ColorA: 1,
+		},
+		{
+			DstX:   0,
+			DstY:   h,
+			SrcX:   0,
+			SrcY:   h,
+			ColorR: 1,
+			ColorG: 1,
+			ColorB: 1,
+			ColorA: 1,
+		},
+		{
+			DstX:   w,
+			DstY:   h,
+			SrcX:   w,
+			SrcY:   h,
+			ColorR: 1,
+			ColorG: 1,
+			ColorB: 1,
+			ColorA: 1,
+		},
+	}
+	is := []uint16{0, 1, 2, 1, 2, 3}
+	for i := 0; i < b.N; i++ {
+		img0.DrawTriangles(vs, is, img1, op)
+	}
+}
+
 func TestImageLinearGraduation(t *testing.T) {
 	img0 := ebiten.NewImage(2, 2)
 	img0.WritePixels([]byte{

internal/atlas/image.go

@@ -43,16 +43,6 @@ func min(a, b int) int {
 	return b
 }
 
-// quadVertices returns vertices to render a quad. These values are passed to graphicscommand.Image.
-func quadVertices(dx0, dy0, dx1, dy1, sx0, sy0, sx1, sy1, cr, cg, cb, ca float32) []float32 {
-	return []float32{
-		dx0, dy0, sx0, sy0, cr, cg, cb, ca,
-		dx1, dy0, sx1, sy0, cr, cg, cb, ca,
-		dx0, dy1, sx0, sy1, cr, cg, cb, ca,
-		dx1, dy1, sx1, sy1, cr, cg, cb, ca,
-	}
-}
-
 func appendDeferred(f func()) {
 	deferredM.Lock()
 	defer deferredM.Unlock()
@@ -149,7 +139,8 @@ func (b *backend) extendIfNeeded(width, height int) {
 
 	srcs := [graphics.ShaderSrcImageCount]*graphicscommand.Image{b.image}
 	sw, sh := b.image.InternalSize()
-	vs := quadVertices(0, 0, float32(sw), float32(sh), 0, 0, float32(sw), float32(sh), 1, 1, 1, 1)
+	vs := make([]float32, 4*graphics.VertexFloatCount)
+	graphics.QuadVerticesFromDstAndSrc(vs, 0, 0, float32(sw), float32(sh), 0, 0, float32(sw), float32(sh), 1, 1, 1, 1)
 	is := graphics.QuadIndices()
 	dr := image.Rect(0, 0, sw, sh)
 	newImg.DrawTriangles(srcs, vs, is, graphicsdriver.BlendCopy, dr, [graphics.ShaderSrcImageCount]image.Rectangle{}, NearestFilterShader.ensureShader(), nil, graphicsdriver.FillRuleFillAll)
@@ -174,7 +165,8 @@ func newClearedImage(width, height int, screen bool) *graphicscommand.Image {
 }
 
 func clearImage(i *graphicscommand.Image, region image.Rectangle) {
-	vs := quadVertices(float32(region.Min.X), float32(region.Min.Y), float32(region.Max.X), float32(region.Max.Y), 0, 0, 0, 0, 0, 0, 0, 0)
+	vs := make([]float32, 4*graphics.VertexFloatCount)
+	graphics.QuadVerticesFromDstAndSrc(vs, float32(region.Min.X), float32(region.Min.Y), float32(region.Max.X), float32(region.Max.Y), 0, 0, 0, 0, 0, 0, 0, 0)
 	is := graphics.QuadIndices()
 	i.DrawTriangles([graphics.ShaderSrcImageCount]*graphicscommand.Image{}, vs, is, graphicsdriver.BlendClear, region, [graphics.ShaderSrcImageCount]image.Rectangle{}, clearShader.ensureShader(), nil, graphicsdriver.FillRuleFillAll)
 }
@@ -353,7 +345,7 @@ func (i *Image) ensureIsolatedFromSource(backends []*backend) {
 
 	w, h := float32(i.width), float32(i.height)
 	vs := make([]float32, 4*graphics.VertexFloatCount)
-	graphics.QuadVertices(vs, 0, 0, w, h, 1, 0, 0, 1, 0, 0, 1, 1, 1, 1)
+	graphics.QuadVerticesFromDstAndSrc(vs, 0, 0, w, h, 0, 0, w, h, 1, 1, 1, 1)
 	is := graphics.QuadIndices()
 	dr := image.Rect(0, 0, i.width, i.height)
 
@@ -384,7 +376,7 @@ func (i *Image) putOnSourceBackend() {
 
 	w, h := float32(i.width), float32(i.height)
 	vs := make([]float32, 4*graphics.VertexFloatCount)
-	graphics.QuadVertices(vs, 0, 0, w, h, 1, 0, 0, 1, 0, 0, 1, 1, 1, 1)
+	graphics.QuadVerticesFromDstAndSrc(vs, 0, 0, w, h, 0, 0, w, h, 1, 1, 1, 1)
 	is := graphics.QuadIndices()
 	dr := image.Rect(0, 0, i.width, i.height)
 	newI.drawTriangles([graphics.ShaderSrcImageCount]*Image{i}, vs, is, graphicsdriver.BlendCopy, dr, [graphics.ShaderSrcImageCount]image.Rectangle{}, NearestFilterShader, nil, graphicsdriver.FillRuleFillAll)
@@ -866,7 +858,7 @@ func SwapBuffers(graphicsDriver graphicsdriver.Graphics) error {
 	}()
 
 	if debug.IsDebug {
-		debug.Logf("Internal image sizes:\n")
+		debug.FrameLogf("Internal image sizes:\n")
 		imgs := make([]*graphicscommand.Image, 0, len(theBackends))
 		for _, backend := range theBackends {
 			imgs = append(imgs, backend.image)

internal/atlas/image_test.go

@@ -50,12 +50,9 @@ func quadVertices(sw, sh, x, y int, scalex float32) []float32 {
 	sy0 := float32(0)
 	sx1 := float32(sw)
 	sy1 := float32(sh)
-	return []float32{
-		dx0, dy0, sx0, sy0, 1, 1, 1, 1,
-		dx1, dy0, sx1, sy0, 1, 1, 1, 1,
-		dx0, dy1, sx0, sy1, 1, 1, 1, 1,
-		dx1, dy1, sx1, sy1, 1, 1, 1, 1,
-	}
+	vs := make([]float32, 4*graphics.VertexFloatCount)
+	graphics.QuadVerticesFromDstAndSrc(vs, dx0, dy0, dx1, dy1, sx0, sy0, sx1, sy1, 1, 1, 1, 1)
+	return vs
 }
 
 const bigSize = 2049

internal/buffered/image.go

@@ -246,45 +246,51 @@ func (i *Image) syncPixelsIfNeeded() {
 		cbf := float32(c[2]) / 0xff
 		caf := float32(c[3]) / 0xff
 
-		vs[graphics.VertexFloatCount*4*idx] = dx
-		vs[graphics.VertexFloatCount*4*idx+1] = dy
-		vs[graphics.VertexFloatCount*4*idx+2] = sx
-		vs[graphics.VertexFloatCount*4*idx+3] = sy
-		vs[graphics.VertexFloatCount*4*idx+4] = crf
-		vs[graphics.VertexFloatCount*4*idx+5] = cgf
-		vs[graphics.VertexFloatCount*4*idx+6] = cbf
-		vs[graphics.VertexFloatCount*4*idx+7] = caf
-		vs[graphics.VertexFloatCount*4*idx+8] = dx + 1
-		vs[graphics.VertexFloatCount*4*idx+9] = dy
-		vs[graphics.VertexFloatCount*4*idx+10] = sx + 1
-		vs[graphics.VertexFloatCount*4*idx+11] = sy
-		vs[graphics.VertexFloatCount*4*idx+12] = crf
-		vs[graphics.VertexFloatCount*4*idx+13] = cgf
-		vs[graphics.VertexFloatCount*4*idx+14] = cbf
-		vs[graphics.VertexFloatCount*4*idx+15] = caf
-		vs[graphics.VertexFloatCount*4*idx+16] = dx
-		vs[graphics.VertexFloatCount*4*idx+17] = dy + 1
-		vs[graphics.VertexFloatCount*4*idx+18] = sx
-		vs[graphics.VertexFloatCount*4*idx+19] = sy + 1
-		vs[graphics.VertexFloatCount*4*idx+20] = crf
-		vs[graphics.VertexFloatCount*4*idx+21] = cgf
-		vs[graphics.VertexFloatCount*4*idx+22] = cbf
-		vs[graphics.VertexFloatCount*4*idx+23] = caf
-		vs[graphics.VertexFloatCount*4*idx+24] = dx + 1
-		vs[graphics.VertexFloatCount*4*idx+25] = dy + 1
-		vs[graphics.VertexFloatCount*4*idx+26] = sx + 1
-		vs[graphics.VertexFloatCount*4*idx+27] = sy + 1
-		vs[graphics.VertexFloatCount*4*idx+28] = crf
-		vs[graphics.VertexFloatCount*4*idx+29] = cgf
-		vs[graphics.VertexFloatCount*4*idx+30] = cbf
-		vs[graphics.VertexFloatCount*4*idx+31] = caf
+		vidx := 4 * idx
+		iidx := 6 * idx
 
-		is[6*idx] = uint32(4 * idx)
-		is[6*idx+1] = uint32(4*idx + 1)
-		is[6*idx+2] = uint32(4*idx + 2)
-		is[6*idx+3] = uint32(4*idx + 1)
-		is[6*idx+4] = uint32(4*idx + 2)
-		is[6*idx+5] = uint32(4*idx + 3)
+		vs[graphics.VertexFloatCount*vidx] = dx
+		vs[graphics.VertexFloatCount*vidx+1] = dy
+		vs[graphics.VertexFloatCount*vidx+2] = sx
+		vs[graphics.VertexFloatCount*vidx+3] = sy
+		vs[graphics.VertexFloatCount*vidx+4] = crf
+		vs[graphics.VertexFloatCount*vidx+5] = cgf
+		vs[graphics.VertexFloatCount*vidx+6] = cbf
+		vs[graphics.VertexFloatCount*vidx+7] = caf
+
+		vs[graphics.VertexFloatCount*(vidx+1)] = dx + 1
+		vs[graphics.VertexFloatCount*(vidx+1)+1] = dy
+		vs[graphics.VertexFloatCount*(vidx+1)+2] = sx + 1
+		vs[graphics.VertexFloatCount*(vidx+1)+3] = sy
+		vs[graphics.VertexFloatCount*(vidx+1)+4] = crf
+		vs[graphics.VertexFloatCount*(vidx+1)+5] = cgf
+		vs[graphics.VertexFloatCount*(vidx+1)+6] = cbf
+		vs[graphics.VertexFloatCount*(vidx+1)+7] = caf
+
+		vs[graphics.VertexFloatCount*(vidx+2)] = dx
+		vs[graphics.VertexFloatCount*(vidx+2)+1] = dy + 1
+		vs[graphics.VertexFloatCount*(vidx+2)+2] = sx
+		vs[graphics.VertexFloatCount*(vidx+2)+3] = sy + 1
+		vs[graphics.VertexFloatCount*(vidx+2)+4] = crf
+		vs[graphics.VertexFloatCount*(vidx+2)+5] = cgf
+		vs[graphics.VertexFloatCount*(vidx+2)+6] = cbf
+		vs[graphics.VertexFloatCount*(vidx+2)+7] = caf
+
+		vs[graphics.VertexFloatCount*(vidx+3)] = dx + 1
+		vs[graphics.VertexFloatCount*(vidx+3)+1] = dy + 1
+		vs[graphics.VertexFloatCount*(vidx+3)+2] = sx + 1
+		vs[graphics.VertexFloatCount*(vidx+3)+3] = sy + 1
+		vs[graphics.VertexFloatCount*(vidx+3)+4] = crf
+		vs[graphics.VertexFloatCount*(vidx+3)+5] = cgf
+		vs[graphics.VertexFloatCount*(vidx+3)+6] = cbf
+		vs[graphics.VertexFloatCount*(vidx+3)+7] = caf
+
+		is[iidx] = uint32(vidx)
+		is[iidx+1] = uint32(vidx + 1)
+		is[iidx+2] = uint32(vidx + 2)
+		is[iidx+3] = uint32(vidx + 1)
+		is[iidx+4] = uint32(vidx + 2)
+		is[iidx+5] = uint32(vidx + 3)
 
 		idx++
 	}

internal/buffered/image_test.go

@@ -52,7 +52,7 @@ func TestUnsyncedPixels(t *testing.T) {
 	// Flush unsynced pixel cache.
 	src := buffered.NewImage(16, 16, atlas.ImageTypeRegular)
 	vs := make([]float32, 4*graphics.VertexFloatCount)
-	graphics.QuadVertices(vs, 0, 0, 16, 16, 1, 0, 0, 1, 0, 0, 1, 1, 1, 1)
+	graphics.QuadVerticesFromDstAndSrc(vs, 0, 0, 16, 16, 0, 0, 16, 16, 1, 1, 1, 1)
 	is := graphics.QuadIndices()
 	dr := image.Rect(0, 0, 16, 16)
 	sr := [graphics.ShaderSrcImageCount]image.Rectangle{image.Rect(0, 0, 16, 16)}

internal/debug/debug.go

@@ -14,7 +14,8 @@
 
 package debug
 
-type Logger interface {
-	Logf(format string, args ...any)
+// FrameLogger defines the interface for logging debug information for each frame.
+type FrameLogger interface {
+	FrameLogf(format string, args ...any)
 	Flush()
 }

internal/debug/debug_ebitenginedebug.go

@@ -23,30 +23,32 @@ import (
 
 const IsDebug = true
 
-var theLogger = &logger{}
+var theFrameLogger = &frameLogger{}
 
 var flushM sync.Mutex
 
-// Logf calls the current global logger's Logf.
-// Logf buffers the arguments and doesn't dump the log immediately.
+// FrameLogf calls the current global logger's FrameLogf.
+// FrameLogf buffers the arguments and doesn't dump the log immediately.
 // You can dump logs by calling SwitchLogger and Flush.
 //
-// Logf is not concurrent safe.
-func Logf(format string, args ...any) {
-	theLogger.Logf(format, args...)
+// FrameLogf is not concurrent safe.
+// FrameLogf and SwitchFrameLogger must be called from the same goroutine.
+func FrameLogf(format string, args ...any) {
+	theFrameLogger.FrameLogf(format, args...)
 }
 
-// SwitchLogger sets a new logger as the current logger and returns the original global logger.
+// SwitchFrameLogger sets a new logger as the current logger and returns the original global logger.
 // The new global logger and the returned logger have separate statuses, so you can use them for different goroutines.
 //
-// SwitchLogger and a returned Logger are not concurrent safe.
-func SwitchLogger() Logger {
-	current := theLogger
-	theLogger = &logger{}
+// SwitchFrameLogger and a returned Logger are not concurrent safe.
+// FrameLogf and SwitchFrameLogger must be called from the same goroutine.
+func SwitchFrameLogger() FrameLogger {
+	current := theFrameLogger
+	theFrameLogger = &frameLogger{}
 	return current
 }
 
-type logger struct {
+type frameLogger struct {
 	items []logItem
 }
 
@@ -55,14 +57,14 @@ type logItem struct {
 	args   []any
 }
 
-func (l *logger) Logf(format string, args ...any) {
+func (l *frameLogger) FrameLogf(format string, args ...any) {
 	l.items = append(l.items, logItem{
 		format: format,
 		args:   args,
 	})
 }
 
-func (l *logger) Flush() {
+func (l *frameLogger) Flush() {
 	// Flushing is protected by a mutex not to mix another logger's logs.
 	flushM.Lock()
 	defer flushM.Unlock()

internal/debug/debug_notebitenginedebug.go

@@ -18,17 +18,17 @@ package debug
 
 const IsDebug = false
 
-func Logf(format string, args ...any) {
+func FrameLogf(format string, args ...any) {
 }
 
-func SwitchLogger() Logger {
-	return dummyLogger{}
+func SwitchFrameLogger() FrameLogger {
+	return dummyFrameLogger{}
 }
 
-type dummyLogger struct{}
+type dummyFrameLogger struct{}
 
-func (dummyLogger) Logf(format string, args ...any) {
+func (dummyFrameLogger) FrameLogf(format string, args ...any) {
 }
 
-func (dummyLogger) Flush() {
+func (dummyFrameLogger) Flush() {
 }

internal/file/file_js.go

@@ -24,13 +24,24 @@ import (
 )
 
 type FileEntryFS struct {
-	rootEntry js.Value
+	rootEntries []js.Value
 }
 
-func NewFileEntryFS(root js.Value) *FileEntryFS {
-	return &FileEntryFS{
-		rootEntry: root,
+func NewFileEntryFS(rootEntries []js.Value) (*FileEntryFS, error) {
+	// Check all the full paths are the same.
+	var fullpath string
+	for _, ent := range rootEntries {
+		if fullpath == "" {
+			fullpath = ent.Get("fullPath").String()
+			continue
 		}
+		if fullpath != ent.Get("fullPath").String() {
+			return nil, errors.New("file: all the full paths must be the same")
+		}
+	}
+	return &FileEntryFS{
+		rootEntries: rootEntries,
+	}, nil
 }
 
 func (f *FileEntryFS) Open(name string) (fs.File, error) {
@@ -43,9 +54,27 @@ func (f *FileEntryFS) Open(name string) (fs.File, error) {
 	}
 
 	if name == "." {
-		return &dir{entry: f.rootEntry}, nil
+		var dirName string
+		for _, ent := range f.rootEntries {
+			if dirName == "" {
+				dirName = ent.Get("name").String()
+				continue
+			}
+			if dirName != ent.Get("name").String() {
+				return nil, &fs.PathError{
+					Op:   "open",
+					Path: name,
+					Err:  errors.New("invalid directory"),
+				}
+			}
+		}
+		return &dir{
+			name:       dirName,
+			dirEntries: f.rootEntries,
+		}, nil
 	}
 
+	for _, ent := range f.rootEntries {
 		var chEntry chan js.Value
 		cbSuccess := js.FuncOf(func(this js.Value, args []js.Value) any {
 			chEntry <- args[0]
@@ -61,15 +90,19 @@ func (f *FileEntryFS) Open(name string) (fs.File, error) {
 		defer cbFailure.Release()
 
 		chEntry = make(chan js.Value)
-	f.rootEntry.Call("getFile", name, nil, cbSuccess, cbFailure)
+		ent.Call("getFile", name, nil, cbSuccess, cbFailure)
 		if entry := <-chEntry; entry.Truthy() {
 			return &file{entry: entry}, nil
 		}
 
 		chEntry = make(chan js.Value)
-	f.rootEntry.Call("getDirectory", name, nil, cbSuccess, cbFailure)
+		ent.Call("getDirectory", name, nil, cbSuccess, cbFailure)
 		if entry := <-chEntry; entry.Truthy() {
-		return &dir{entry: entry}, nil
+			return &dir{
+				name:       entry.Get("name").String(),
+				dirEntries: []js.Value{entry},
+			}, nil
+		}
 	}
 
 	return nil, &fs.PathError{
@@ -109,7 +142,7 @@ func (f *file) ensureFile() js.Value {
 
 func (f *file) Stat() (fs.FileInfo, error) {
 	return &fileInfo{
-		entry: f.entry,
+		name: f.entry.Get("name").String(),
 		file: f.ensureFile(),
 	}, nil
 }
@@ -163,21 +196,22 @@ func (f *file) Close() error {
 }
 
 type dir struct {
-	entry   js.Value
-	entries []js.Value
+	name        string
+	dirEntries  []js.Value
+	fileEntries []js.Value
 	offset      int
 }
 
 func (d *dir) Stat() (fs.FileInfo, error) {
 	return &fileInfo{
-		entry: d.entry,
+		name: d.name,
 	}, nil
 }
 
 func (d *dir) Read(buf []byte) (int, error) {
 	return 0, &fs.PathError{
 		Op:   "read",
-		Path: d.entry.Get("name").String(),
+		Path: d.name,
 		Err:  errors.New("is a directory"),
 	}
 }
@@ -187,7 +221,9 @@ func (d *dir) Close() error {
 }
 
 func (d *dir) ReadDir(count int) ([]fs.DirEntry, error) {
-	if d.entries == nil {
+	if d.fileEntries == nil {
+		names := map[string]struct{}{}
+		for _, dirEntry := range d.dirEntries {
 			ch := make(chan struct{})
 			var rec js.Func
 			cb := js.FuncOf(func(this js.Value, args []js.Value) any {
@@ -198,21 +234,27 @@ func (d *dir) ReadDir(count int) ([]fs.DirEntry, error) {
 				}
 				for i := 0; i < entries.Length(); i++ {
 					ent := entries.Index(i)
+					name := ent.Get("name").String()
 					// A name can be empty when this directory is a root directory.
-				if ent.Get("name").String() == "" {
+					if name == "" {
+						continue
+					}
+					// Avoid entry duplications. Entry duplications happen when multiple files are dropped on Chrome.
+					if _, ok := names[name]; ok {
 						continue
 					}
 					if !ent.Get("isFile").Bool() && !ent.Get("isDirectory").Bool() {
 						continue
 					}
-				d.entries = append(d.entries, ent)
+					d.fileEntries = append(d.fileEntries, ent)
+					names[name] = struct{}{}
 				}
 				rec.Value.Call("call")
 				return nil
 			})
 			defer cb.Release()
 
-		reader := d.entry.Call("createReader")
+			reader := dirEntry.Call("createReader")
 			rec = js.FuncOf(func(this js.Value, args []js.Value) any {
 				reader.Call("readEntries", cb)
 				return nil
@@ -222,8 +264,9 @@ func (d *dir) ReadDir(count int) ([]fs.DirEntry, error) {
 			rec.Value.Call("call")
 			<-ch
 		}
+	}
 
-	n := len(d.entries) - d.offset
+	n := len(d.fileEntries) - d.offset
 
 	if n == 0 {
 		if count <= 0 {
@@ -238,11 +281,12 @@ func (d *dir) ReadDir(count int) ([]fs.DirEntry, error) {
 
 	ents := make([]fs.DirEntry, n)
 	for i := range ents {
+		entry := d.fileEntries[d.offset+i]
 		fi := &fileInfo{
-			entry: d.entries[d.offset+i],
+			name: entry.Get("name").String(),
 		}
-		if fi.entry.Get("isFile").Bool() {
-			fi.file = getFile(fi.entry)
+		if entry.Get("isFile").Bool() {
+			fi.file = getFile(entry)
 		}
 		ents[i] = fs.FileInfoToDirEntry(fi)
 	}
@@ -252,12 +296,12 @@ func (d *dir) ReadDir(count int) ([]fs.DirEntry, error) {
 }
 
 type fileInfo struct {
-	entry js.Value
+	name string
 	file js.Value
 }
 
 func (f *fileInfo) Name() string {
-	return f.entry.Get("name").String()
+	return f.name
 }
 
 func (f *fileInfo) Size() int64 {

internal/gamepad/gamepad_linux.go

@@ -54,6 +54,10 @@ func (g *nativeGamepadsImpl) init(gamepads *gamepads) error {
 		if err == unix.ENOENT {
 			return nil
 		}
+		// `/dev/input` might not be accessible in some environments (#3057).
+		if err == unix.EACCES {
+			return nil
+		}
 		return fmt.Errorf("gamepad: Stat failed: %w", err)
 	}
 	if stat.Mode&unix.S_IFDIR == 0 {

internal/gamepaddb/gen.go

@@ -155,7 +155,8 @@ func run() error {
 		}
 		defer f.Close()
 
-		if err := tmpl.Execute(f, struct {
+		w := bufio.NewWriter(f)
+		if err := tmpl.Execute(w, struct {
 			License          string
 			DoNotEdit        string
 			BuildConstraints string
@@ -170,6 +171,9 @@ func run() error {
 		}); err != nil {
 			return err
 		}
+		if err := w.Flush(); err != nil {
+			return err
+		}
 	}
 
 	return nil

internal/graphics/vertex.go

@@ -50,16 +50,16 @@ func QuadIndices() []uint32 {
 	return quadIndices
 }
 
-// QuadVertices sets a float32 slice for a quadrangle.
-// QuadVertices sets a slice that never overlaps with other slices returned this function,
-// and users can do optimization based on this fact.
-func QuadVertices(dst []float32, sx0, sy0, sx1, sy1 float32, a, b, c, d, tx, ty float32, cr, cg, cb, ca float32) {
+// QuadVerticesFromSrcAndMatrix sets a float32 slice for a quadrangle.
+func QuadVerticesFromSrcAndMatrix(dst []float32, sx0, sy0, sx1, sy1 float32, a, b, c, d, tx, ty float32, cr, cg, cb, ca float32) {
 	x := sx1 - sx0
 	y := sy1 - sy0
 	ax, by, cx, dy := a*x, b*y, c*x, d*y
 	u0, v0, u1, v1 := sx0, sy0, sx1, sy1
 
 	// This function is very performance-sensitive and implement in a very dumb way.
+
+	// Remove the boundary check.
 	dst = dst[:4*VertexFloatCount]
 
 	dst[0] = adjustDestinationPixel(tx)
@@ -71,32 +71,79 @@ func QuadVertices(dst []float32, sx0, sy0, sx1, sy1 float32, a, b, c, d, tx, ty
 	dst[6] = cb
 	dst[7] = ca
 
-	dst[8] = adjustDestinationPixel(ax + tx)
-	dst[9] = adjustDestinationPixel(cx + ty)
-	dst[10] = u1
-	dst[11] = v0
-	dst[12] = cr
-	dst[13] = cg
-	dst[14] = cb
-	dst[15] = ca
+	dst[VertexFloatCount] = adjustDestinationPixel(ax + tx)
+	dst[VertexFloatCount+1] = adjustDestinationPixel(cx + ty)
+	dst[VertexFloatCount+2] = u1
+	dst[VertexFloatCount+3] = v0
+	dst[VertexFloatCount+4] = cr
+	dst[VertexFloatCount+5] = cg
+	dst[VertexFloatCount+6] = cb
+	dst[VertexFloatCount+7] = ca
 
-	dst[16] = adjustDestinationPixel(by + tx)
-	dst[17] = adjustDestinationPixel(dy + ty)
-	dst[18] = u0
-	dst[19] = v1
-	dst[20] = cr
-	dst[21] = cg
-	dst[22] = cb
-	dst[23] = ca
+	dst[2*VertexFloatCount] = adjustDestinationPixel(by + tx)
+	dst[2*VertexFloatCount+1] = adjustDestinationPixel(dy + ty)
+	dst[2*VertexFloatCount+2] = u0
+	dst[2*VertexFloatCount+3] = v1
+	dst[2*VertexFloatCount+4] = cr
+	dst[2*VertexFloatCount+5] = cg
+	dst[2*VertexFloatCount+6] = cb
+	dst[2*VertexFloatCount+7] = ca
 
-	dst[24] = adjustDestinationPixel(ax + by + tx)
-	dst[25] = adjustDestinationPixel(cx + dy + ty)
-	dst[26] = u1
-	dst[27] = v1
-	dst[28] = cr
-	dst[29] = cg
-	dst[30] = cb
-	dst[31] = ca
+	dst[3*VertexFloatCount] = adjustDestinationPixel(ax + by + tx)
+	dst[3*VertexFloatCount+1] = adjustDestinationPixel(cx + dy + ty)
+	dst[3*VertexFloatCount+2] = u1
+	dst[3*VertexFloatCount+3] = v1
+	dst[3*VertexFloatCount+4] = cr
+	dst[3*VertexFloatCount+5] = cg
+	dst[3*VertexFloatCount+6] = cb
+	dst[3*VertexFloatCount+7] = ca
+}
+
+// QuadVerticesFromDstAndSrc sets a float32 slice for a quadrangle.
+func QuadVerticesFromDstAndSrc(dst []float32, dx0, dy0, dx1, dy1, sx0, sy0, sx1, sy1, cr, cg, cb, ca float32) {
+	dx0 = adjustDestinationPixel(dx0)
+	dy0 = adjustDestinationPixel(dy0)
+	dx1 = adjustDestinationPixel(dx1)
+	dy1 = adjustDestinationPixel(dy1)
+
+	// Remove the boundary check.
+	dst = dst[:4*VertexFloatCount]
+
+	dst[0] = dx0
+	dst[1] = dy0
+	dst[2] = sx0
+	dst[3] = sy0
+	dst[4] = cr
+	dst[5] = cg
+	dst[6] = cb
+	dst[7] = ca
+
+	dst[VertexFloatCount] = dx1
+	dst[VertexFloatCount+1] = dy0
+	dst[VertexFloatCount+2] = sx1
+	dst[VertexFloatCount+3] = sy0
+	dst[VertexFloatCount+4] = cr
+	dst[VertexFloatCount+5] = cg
+	dst[VertexFloatCount+6] = cb
+	dst[VertexFloatCount+7] = ca
+
+	dst[2*VertexFloatCount] = dx0
+	dst[2*VertexFloatCount+1] = dy1
+	dst[2*VertexFloatCount+2] = sx0
+	dst[2*VertexFloatCount+3] = sy1
+	dst[2*VertexFloatCount+4] = cr
+	dst[2*VertexFloatCount+5] = cg
+	dst[2*VertexFloatCount+6] = cb
+	dst[2*VertexFloatCount+7] = ca
+
+	dst[3*VertexFloatCount] = dx1
+	dst[3*VertexFloatCount+1] = dy1
+	dst[3*VertexFloatCount+2] = sx1
+	dst[3*VertexFloatCount+3] = sy1
+	dst[3*VertexFloatCount+4] = cr
+	dst[3*VertexFloatCount+5] = cg
+	dst[3*VertexFloatCount+6] = cb
+	dst[3*VertexFloatCount+7] = ca
 }
 
 func adjustDestinationPixel(x float32) float32 {

internal/graphicscommand/command.go

@@ -183,9 +183,9 @@ func dstRegionFromVertices(vertices []float32) (minX, minY, maxX, maxY float32)
 	maxX = negInf32
 	maxY = negInf32
 
-	for i := 0; i < len(vertices)/graphics.VertexFloatCount; i++ {
-		x := vertices[graphics.VertexFloatCount*i]
-		y := vertices[graphics.VertexFloatCount*i+1]
+	for i := 0; i < len(vertices); i += graphics.VertexFloatCount {
+		x := vertices[i]
+		y := vertices[i+1]
 		if x < minX {
 			minX = x
 		}

internal/graphicscommand/commandqueue.go

@@ -197,7 +197,7 @@ func (q *commandQueue) Flush(graphicsDriver graphicsdriver.Graphics, endFrame bo
 		}
 	}
 
-	logger := debug.SwitchLogger()
+	logger := debug.SwitchFrameLogger()
 
 	var flushErr error
 	runOnRenderThread(func() {
@@ -223,7 +223,7 @@ func (q *commandQueue) Flush(graphicsDriver graphicsdriver.Graphics, endFrame bo
 }
 
 // flush must be called the render thread.
-func (q *commandQueue) flush(graphicsDriver graphicsdriver.Graphics, endFrame bool, logger debug.Logger) (err error) {
+func (q *commandQueue) flush(graphicsDriver graphicsdriver.Graphics, endFrame bool, logger debug.FrameLogger) (err error) {
 	// If endFrame is true, Begin/End should be called to ensure the framebuffer is swapped.
 	if len(q.commands) == 0 && !endFrame {
 		return nil
@@ -231,7 +231,7 @@ func (q *commandQueue) flush(graphicsDriver graphicsdriver.Graphics, endFrame bo
 
 	es := q.indices
 	vs := q.vertices
-	logger.Logf("Graphics commands:\n")
+	logger.FrameLogf("Graphics commands:\n")
 
 	if err := graphicsDriver.Begin(); err != nil {
 		return err
@@ -294,7 +294,7 @@ func (q *commandQueue) flush(graphicsDriver graphicsdriver.Graphics, endFrame bo
 			if err := c.Exec(q, graphicsDriver, indexOffset); err != nil {
 				return err
 			}
-			logger.Logf("  %s\n", c)
+			logger.FrameLogf("  %s\n", c)
 			// TODO: indexOffset should be reset if the command type is different
 			// from the previous one. This fix is needed when another drawing command is
 			// introduced than drawTrianglesCommand.

internal/graphicscommand/image.go

@@ -234,6 +234,6 @@ func LogImagesInfo(images []*Image) {
 		if i.screen {
 			screen = " (screen)"
 		}
-		debug.Logf("  %d: (%d, %d)%s\n", i.id, w, h, screen)
+		debug.FrameLogf("  %d: (%d, %d)%s\n", i.id, w, h, screen)
 	}
 }

internal/graphicscommand/image_test.go

@@ -43,12 +43,9 @@ func TestMain(m *testing.M) {
 }
 
 func quadVertices(w, h float32) []float32 {
-	return []float32{
-		0, 0, 0, 0, 1, 1, 1, 1,
-		w, 0, w, 0, 1, 1, 1, 1,
-		0, w, 0, h, 1, 1, 1, 1,
-		w, h, w, h, 1, 1, 1, 1,
-	}
+	vs := make([]float32, 8*graphics.VertexFloatCount)
+	graphics.QuadVerticesFromDstAndSrc(vs, 0, 0, w, h, 0, 0, w, h, 1, 1, 1, 1)
+	return vs
 }
 
 func TestClear(t *testing.T) {

internal/graphicsdriver/metal/mtl/mtl_darwin_test.go

@@ -15,6 +15,7 @@
 package mtl_test
 
 import (
+	"bufio"
 	"fmt"
 	"image"
 	"image/color"
@@ -147,7 +148,7 @@ func readPNG(name string) (image.Image, error) {
 	defer func() {
 		_ = f.Close()
 	}()
-	return png.Decode(f)
+	return png.Decode(bufio.NewReader(f))
 }
 
 // imageEq reports whether images m, n are considered equivalent. Two images are considered

internal/graphicsdriver/opengl/context.go

@@ -90,7 +90,6 @@ type (
 
 type (
 	uniformLocation int32
-	attribLocation  int32
 )
 
 const (
@@ -111,8 +110,6 @@ type context struct {
 	lastBlend          graphicsdriver.Blend
 	maxTextureSize     int
 	maxTextureSizeOnce sync.Once
-	highp              bool
-	highpOnce          sync.Once
 	initOnce           sync.Once
 }
 

internal/graphicsdriver/opengl/gl/procaddr_linbsd.go

@@ -18,8 +18,6 @@ package gl
 
 import (
 	"fmt"
-	"os"
-	"runtime"
 	"strings"
 
 	"github.com/ebitengine/purego"
@@ -31,22 +29,21 @@ var (
 )
 
 func (c *defaultContext) init() error {
-	var preferES bool
-	if runtime.GOOS == "android" {
-		preferES = true
-	}
-	if !preferES {
-		for _, t := range strings.Split(os.Getenv("EBITENGINE_OPENGL"), ",") {
-			switch strings.TrimSpace(t) {
-			case "es":
-				preferES = true
-				break
-			}
+	// TODO: Use multiple %w-s as of Go 1.20.
+	var errors []string
+
+	// Try OpenGL ES first. Some machines like Android and Raspberry Pi might work only with OpenGL ES.
+	for _, name := range []string{"libGLESv2.so", "libGLESv2.so.2", "libGLESv2.so.1", "libGLESv2.so.0"} {
+		lib, err := purego.Dlopen(name, purego.RTLD_LAZY|purego.RTLD_GLOBAL)
+		if err == nil {
+			libGLES = lib
+			c.isES = true
+			return nil
 		}
+		errors = append(errors, fmt.Sprintf("%s: %v", name, err))
 	}
 
-	// Try OpenGL first. OpenGL is preferable as this doesn't cause context losses.
-	if !preferES {
+	// Try OpenGL next.
 	// Usually libGL.so or libGL.so.1 is used. libGL.so.2 might exist only on NetBSD.
 	// TODO: Should "libOpenGL.so.0" [1] and "libGLX.so.0" [2] be added? These were added as of GLFW 3.3.9.
 	// [1] https://github.com/glfw/glfw/commit/55aad3c37b67f17279378db52da0a3ab81bbf26d
@@ -57,20 +54,10 @@ func (c *defaultContext) init() error {
 			libGL = lib
 			return nil
 		}
-		}
+		errors = append(errors, fmt.Sprintf("%s: %v", name, err))
 	}
 
-	// Try OpenGL ES.
-	for _, name := range []string{"libGLESv2.so", "libGLESv2.so.2", "libGLESv2.so.1", "libGLESv2.so.0"} {
-		lib, err := purego.Dlopen(name, purego.RTLD_LAZY|purego.RTLD_GLOBAL)
-		if err == nil {
-			libGLES = lib
-			c.isES = true
-			return nil
-		}
-	}
-
-	return fmt.Errorf("gl: failed to load libGL.so and libGLESv2.so")
+	return fmt.Errorf("gl: failed to load libGL.so and libGLESv2.so: %s", strings.Join(errors, ", "))
 }
 
 func (c *defaultContext) getProcAddress(name string) (uintptr, error) {

internal/graphicsdriver/opengl/graphics_debug.go

@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-//go:build ebitenginegldebug
+//go:build !playstation5 && ebitenginegldebug
 
 package opengl
 

internal/graphicsdriver/opengl/graphics_notdebug.go

@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-//go:build !ebitenginegldebug
+//go:build !playstation5 && !ebitenginegldebug
 
 package opengl
 

internal/graphicsdriver/opengl/program.go

@@ -53,14 +53,14 @@ func (a *arrayBufferLayout) names() []string {
 	return ns
 }
 
-// totalBytes returns the size in bytes for one element of the array buffer.
-func (a *arrayBufferLayout) totalBytes() int {
+// float32Count returns the total float32 count for one element of the array buffer.
+func (a *arrayBufferLayout) float32Count() int {
 	if a.total != 0 {
 		return a.total
 	}
 	t := 0
 	for _, p := range a.parts {
-		t += floatSizeInBytes * p.num
+		t += p.num
 	}
 	a.total = t
 	return a.total
@@ -71,10 +71,10 @@ func (a *arrayBufferLayout) enable(context *context) {
 	for i := range a.parts {
 		context.ctx.EnableVertexAttribArray(uint32(i))
 	}
-	total := a.totalBytes()
+	total := a.float32Count()
 	offset := 0
 	for i, p := range a.parts {
-		context.ctx.VertexAttribPointer(uint32(i), int32(p.num), gl.FLOAT, false, int32(total), offset)
+		context.ctx.VertexAttribPointer(uint32(i), int32(p.num), gl.FLOAT, false, int32(floatSizeInBytes*total), offset)
 		offset += floatSizeInBytes * p.num
 	}
 }
@@ -88,7 +88,10 @@ func (a *arrayBufferLayout) disable(context *context) {
 }
 
 // theArrayBufferLayout is the array buffer layout for Ebitengine.
-var theArrayBufferLayout = arrayBufferLayout{
+var theArrayBufferLayout arrayBufferLayout
+
+func init() {
+	theArrayBufferLayout = arrayBufferLayout{
 		// Note that GL_MAX_VERTEX_ATTRIBS is at least 16.
 		parts: []arrayBufferLayoutPart{
 			{
@@ -104,12 +107,20 @@ var theArrayBufferLayout = arrayBufferLayout{
 				num:  4,
 			},
 		},
-}
-
-func init() {
-	vertexFloatCount := theArrayBufferLayout.totalBytes() / floatSizeInBytes
-	if graphics.VertexFloatCount != vertexFloatCount {
-		panic(fmt.Sprintf("vertex float num must be %d but %d", graphics.VertexFloatCount, vertexFloatCount))
+	}
+	n := theArrayBufferLayout.float32Count()
+	if n > graphics.VertexFloatCount {
+		panic("opengl: the array buffer layout is too large")
+	}
+	if n < graphics.VertexFloatCount {
+		d := graphics.VertexFloatCount - n
+		if d > 4 {
+			panic("opengl: the array buffer layout is too small")
+		}
+		theArrayBufferLayout.parts = append(theArrayBufferLayout.parts, arrayBufferLayoutPart{
+			name: "A3",
+			num:  d,
+		})
 	}
 }
 

internal/graphicsdriver/playstation5/graphics_playstation5.cpp

@@ -18,24 +18,31 @@
 
 #include "graphics_playstation5.h"
 
-extern "C" ebitengine_Error ebitengine_InitializeGraphics(void) {
+extern "C" ebitengine_Error ebitengine_InitializeGraphics(void) { return {}; }
+
+extern "C" ebitengine_Error ebitengine_NewImage(int *image, int width,
+                                                int height) {
   return {};
 }
 
-extern "C" ebitengine_Error ebitengine_NewImage(int* image, int width, int height) {
+extern "C" ebitengine_Error
+ebitengine_NewScreenFramebufferImage(int *image, int width, int height) {
   return {};
 }
 
-extern "C" ebitengine_Error ebitengine_NewScreenFramebufferImage(int* image, int width, int height) {
+extern "C" void ebitengine_DisposeImage(int id) {}
+
+ebitengine_Error
+ebitengine_DrawTriangles(int dst, int *srcs, int srcCount, int shader,
+                         ebitengine_DstRegion *dstRegions, int dstRegionCount,
+                         int indexOffset, ebitengine_Blend blend,
+                         uint32_t *uniforms, int uniformCount, int fillRule) {
   return {};
 }
 
-extern "C" void ebitengine_DisposeImage(int id) {
-}
-
-extern "C" ebitengine_Error ebitengine_NewShader(int* shader, const char* source) {
+extern "C" ebitengine_Error ebitengine_NewShader(int *shader,
+                                                 const char *source) {
   return {};
 }
 
-extern "C" void ebitengine_DisposeShader(int id) {
-}
+extern "C" void ebitengine_DisposeShader(int id) {}

internal/graphicsdriver/playstation5/graphics_playstation5.go

@@ -21,6 +21,7 @@ import "C"
 
 import (
 	"fmt"
+	"runtime"
 
 	"github.com/hajimehoshi/ebiten/v2/internal/graphics"
 	"github.com/hajimehoshi/ebiten/v2/internal/graphicsdriver"
@@ -98,7 +99,7 @@ func (g *Graphics) SetVsyncEnabled(enabled bool) {
 }
 
 func (g *Graphics) NeedsClearingScreen() bool {
-	return false
+	return true
 }
 
 func (g *Graphics) MaxImageSize() int {
@@ -117,6 +118,42 @@ func (g *Graphics) NewShader(program *shaderir.Program) (graphicsdriver.Shader,
 }
 
 func (g *Graphics) DrawTriangles(dst graphicsdriver.ImageID, srcs [graphics.ShaderSrcImageCount]graphicsdriver.ImageID, shader graphicsdriver.ShaderID, dstRegions []graphicsdriver.DstRegion, indexOffset int, blend graphicsdriver.Blend, uniforms []uint32, fillRule graphicsdriver.FillRule) error {
+	cSrcs := make([]C.int, len(srcs))
+	for i, src := range srcs {
+		cSrcs[i] = C.int(src)
+	}
+	defer runtime.KeepAlive(cSrcs)
+
+	cDstRegions := make([]C.ebitengine_DstRegion, len(dstRegions))
+	defer runtime.KeepAlive(cDstRegions)
+	for i, r := range dstRegions {
+		cDstRegions[i] = C.ebitengine_DstRegion{
+			MinX:       C.int(r.Region.Min.X),
+			MinY:       C.int(r.Region.Min.Y),
+			MaxX:       C.int(r.Region.Max.X),
+			MaxY:       C.int(r.Region.Max.Y),
+			IndexCount: C.int(r.IndexCount),
+		}
+	}
+
+	cBlend := C.ebitengine_Blend{
+		BlendFactorSourceRGB:        C.uint8_t(blend.BlendFactorSourceRGB),
+		BlendFactorSourceAlpha:      C.uint8_t(blend.BlendFactorSourceAlpha),
+		BlendFactorDestinationRGB:   C.uint8_t(blend.BlendFactorDestinationRGB),
+		BlendFactorDestinationAlpha: C.uint8_t(blend.BlendFactorDestinationAlpha),
+		BlendOperationRGB:           C.uint8_t(blend.BlendOperationRGB),
+		BlendOperationAlpha:         C.uint8_t(blend.BlendOperationAlpha),
+	}
+
+	cUniforms := make([]C.uint32_t, len(uniforms))
+	defer runtime.KeepAlive(cUniforms)
+	for i, u := range uniforms {
+		cUniforms[i] = C.uint32_t(u)
+	}
+
+	if err := C.ebitengine_DrawTriangles(C.int(dst), &cSrcs[0], C.int(len(cSrcs)), C.int(shader), &cDstRegions[0], C.int(len(cDstRegions)), C.int(indexOffset), cBlend, &cUniforms[0], C.int(len(cUniforms)), C.int(fillRule)); !C.ebitengine_IsErrorNil(&err) {
+		return newPlaystation5Error("(*playstation5.Graphics).DrawTriangles", err)
+	}
 	return nil
 }
 

internal/graphicsdriver/playstation5/graphics_playstation5.h

@@ -19,26 +19,51 @@
 
 #include <stdbool.h>
 #include <stddef.h>
+#include <stdint.h>
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 typedef struct ebitengine_Error {
-  const char* Message;
+  const char *Message;
   int Code;
 } ebitengine_Error;
 
-static bool ebitengine_IsErrorNil(ebitengine_Error* err) {
+static bool ebitengine_IsErrorNil(ebitengine_Error *err) {
   return err->Message == NULL && err->Code == 0;
 }
 
+typedef struct ebitengine_DstRegion {
+  int MinX;
+  int MinY;
+  int MaxX;
+  int MaxY;
+  int IndexCount;
+} ebitengine_DstRegion;
+
+typedef struct ebitengine_Blend {
+  uint8_t BlendFactorSourceRGB;
+  uint8_t BlendFactorSourceAlpha;
+  uint8_t BlendFactorDestinationRGB;
+  uint8_t BlendFactorDestinationAlpha;
+  uint8_t BlendOperationRGB;
+  uint8_t BlendOperationAlpha;
+} ebitengine_Blend;
+
 ebitengine_Error ebitengine_InitializeGraphics(void);
-ebitengine_Error ebitengine_NewImage(int* image, int width, int height);
-ebitengine_Error ebitengine_NewScreenFramebufferImage(int* image, int width, int height);
+ebitengine_Error ebitengine_NewImage(int *image, int width, int height);
+ebitengine_Error ebitengine_NewScreenFramebufferImage(int *image, int width,
+                                                      int height);
 void ebitengine_DisposeImage(int id);
 
-ebitengine_Error ebitengine_NewShader(int* shader, const char* source);
+ebitengine_Error
+ebitengine_DrawTriangles(int dst, int *srcs, int srcCount, int shader,
+                         ebitengine_DstRegion *dstRegions, int dstRegionCount,
+                         int indexOffset, ebitengine_Blend blend,
+                         uint32_t *uniforms, int uniformCount, int fillRule);
+
+ebitengine_Error ebitengine_NewShader(int *shader, const char *source);
 void ebitengine_DisposeShader(int id);
 
 #ifdef __cplusplus

internal/mipmap/mipmap.go

@@ -73,20 +73,22 @@ func (m *Mipmap) DrawTriangles(srcs [graphics.ShaderSrcImageCount]*Mipmap, verti
 	level := 0
 	if !canSkipMipmap && srcs[0] != nil && canUseMipmap(srcs[0].imageType) {
 		level = math.MaxInt32
-		for i := 0; i < len(indices)/3; i++ {
-			const n = graphics.VertexFloatCount
-			dx0 := vertices[n*indices[3*i]+0]
-			dy0 := vertices[n*indices[3*i]+1]
-			sx0 := vertices[n*indices[3*i]+2]
-			sy0 := vertices[n*indices[3*i]+3]
-			dx1 := vertices[n*indices[3*i+1]+0]
-			dy1 := vertices[n*indices[3*i+1]+1]
-			sx1 := vertices[n*indices[3*i+1]+2]
-			sy1 := vertices[n*indices[3*i+1]+3]
-			dx2 := vertices[n*indices[3*i+2]+0]
-			dy2 := vertices[n*indices[3*i+2]+1]
-			sx2 := vertices[n*indices[3*i+2]+2]
-			sy2 := vertices[n*indices[3*i+2]+3]
+		for i := 0; i < len(indices); i += 3 {
+			idx0 := indices[i]
+			idx1 := indices[i+1]
+			idx2 := indices[i+2]
+			dx0 := vertices[graphics.VertexFloatCount*idx0]
+			dy0 := vertices[graphics.VertexFloatCount*idx0+1]
+			sx0 := vertices[graphics.VertexFloatCount*idx0+2]
+			sy0 := vertices[graphics.VertexFloatCount*idx0+3]
+			dx1 := vertices[graphics.VertexFloatCount*idx1]
+			dy1 := vertices[graphics.VertexFloatCount*idx1+1]
+			sx1 := vertices[graphics.VertexFloatCount*idx1+2]
+			sy1 := vertices[graphics.VertexFloatCount*idx1+3]
+			dx2 := vertices[graphics.VertexFloatCount*idx2]
+			dy2 := vertices[graphics.VertexFloatCount*idx2+1]
+			sx2 := vertices[graphics.VertexFloatCount*idx2+2]
+			sy2 := vertices[graphics.VertexFloatCount*idx2+3]
 			if l := mipmapLevelFromDistance(dx0, dy0, dx1, dy1, sx0, sy0, sx1, sy1); level > l {
 				level = l
 			}
@@ -109,11 +111,10 @@ func (m *Mipmap) DrawTriangles(srcs [graphics.ShaderSrcImageCount]*Mipmap, verti
 		}
 		if level != 0 {
 			if img := src.level(level); img != nil {
-				const n = graphics.VertexFloatCount
 				s := float32(pow2(level))
-				for i := 0; i < len(vertices)/n; i++ {
-					vertices[i*n+2] /= s
-					vertices[i*n+3] /= s
+				for i := 0; i < len(vertices); i += graphics.VertexFloatCount {
+					vertices[i+2] /= s
+					vertices[i+3] /= s
 				}
 				imgs[i] = img
 				continue
@@ -148,12 +149,10 @@ func (m *Mipmap) level(level int) *buffered.Image {
 
 	var src *buffered.Image
 	vs := make([]float32, 4*graphics.VertexFloatCount)
-	shader := atlas.NearestFilterShader
 	switch {
 	case level == 1:
 		src = m.orig
-		graphics.QuadVertices(vs, 0, 0, float32(m.width), float32(m.height), 0.5, 0, 0, 0.5, 0, 0, 1, 1, 1, 1)
-		shader = atlas.LinearFilterShader
+		graphics.QuadVerticesFromSrcAndMatrix(vs, 0, 0, float32(m.width), float32(m.height), 0.5, 0, 0, 0.5, 0, 0, 1, 1, 1, 1)
 	case level > 1:
 		src = m.level(level - 1)
 		if src == nil {
@@ -162,8 +161,7 @@ func (m *Mipmap) level(level int) *buffered.Image {
 		}
 		w := sizeForLevel(m.width, level-1)
 		h := sizeForLevel(m.height, level-1)
-		graphics.QuadVertices(vs, 0, 0, float32(w), float32(h), 0.5, 0, 0, 0.5, 0, 0, 1, 1, 1, 1)
-		shader = atlas.LinearFilterShader
+		graphics.QuadVerticesFromSrcAndMatrix(vs, 0, 0, float32(w), float32(h), 0.5, 0, 0, 0.5, 0, 0, 1, 1, 1, 1)
 	default:
 		panic(fmt.Sprintf("mipmap: invalid level: %d", level))
 	}
@@ -186,7 +184,7 @@ func (m *Mipmap) level(level int) *buffered.Image {
 	s := buffered.NewImage(w2, h2, m.imageType)
 
 	dstRegion := image.Rect(0, 0, w2, h2)
-	s.DrawTriangles([graphics.ShaderSrcImageCount]*buffered.Image{src}, vs, is, graphicsdriver.BlendCopy, dstRegion, [graphics.ShaderSrcImageCount]image.Rectangle{}, shader, nil, graphicsdriver.FillRuleFillAll)
+	s.DrawTriangles([graphics.ShaderSrcImageCount]*buffered.Image{src}, vs, is, graphicsdriver.BlendCopy, dstRegion, [graphics.ShaderSrcImageCount]image.Rectangle{}, atlas.LinearFilterShader, nil, graphicsdriver.FillRuleFillAll)
 	m.setImg(level, s)
 
 	return m.imgs[level]

internal/png/gen.go

@@ -17,6 +17,7 @@
 package main
 
 import (
+	"bufio"
 	"fmt"
 	"go/ast"
 	"go/format"
@@ -93,6 +94,8 @@ func run() error {
 		}
 		defer out.Close()
 
+		w := bufio.NewWriter(out)
+
 		// TODO: Remove call of RegisterDecoder
 
 		data, err := os.ReadFile(filepath.Join(dir, f))
@@ -129,14 +132,14 @@ func run() error {
 			return true
 		}, nil)
 
-		fmt.Fprintln(out, "// Code generated by gen.go. DO NOT EDIT.")
-		fmt.Fprintln(out)
-		format.Node(out, fset, tree)
+		fmt.Fprintln(w, "// Code generated by gen.go. DO NOT EDIT.")
+		fmt.Fprintln(w)
+		format.Node(w, fset, tree)
 
 		if f == "reader.go" {
 			// The min function was removed as of Go 1.22, but this is needed for old Go.
 			// TODO: Remove this when Go 1.21 is the minimum supported version.
-			fmt.Fprintln(out, `
+			fmt.Fprintln(w, `
 func min(a, b int) int {
 	if a < b {
 		return a
@@ -144,6 +147,10 @@ func min(a, b int) int {
 	return b
 }`)
 		}
+
+		if err := w.Flush(); err != nil {
+			return err
+		}
 	}
 	return nil
 }

internal/shader/expr.go

@@ -1150,6 +1150,11 @@ func (cs *compileState) parseExpr(block *block, fname string, expr ast.Expr, mar
 		x := exprs[0]
 		t := ts[0]
 
+		if (t.IsFloatVector() || t.IsIntVector()) && idx.Const == nil {
+			cs.addError(e.Pos(), fmt.Sprintf("index must be a constant for the type %s", t.String()))
+			return nil, nil, nil, false
+		}
+
 		var typ shaderir.Type
 		switch t.Main {
 		case shaderir.Vec2, shaderir.Vec3, shaderir.Vec4:

internal/shader/shader_test.go

@@ -21,7 +21,6 @@ import (
 	"runtime"
 	"strings"
 	"testing"
-	"time"
 
 	"github.com/hajimehoshi/ebiten/v2/internal/shader"
 	"github.com/hajimehoshi/ebiten/v2/internal/shaderir"
@@ -30,13 +29,6 @@ import (
 	"github.com/hajimehoshi/ebiten/v2/internal/shaderir/msl"
 )
 
-func TestMain(m *testing.M) {
-	code := m.Run()
-	// The Wasm tests on GitHub CI often fail due to some remaining functions. Wait for a while to finish them.
-	time.Sleep(100 * time.Millisecond)
-	os.Exit(code)
-}
-
 func glslVertexNormalize(str string) string {
 	p := glsl.VertexPrelude(glsl.GLSLVersionDefault)
 	if strings.HasPrefix(str, p) {

internal/shader/syntax_test.go

@@ -4363,3 +4363,67 @@ func Foo() int {
 		t.Error(err)
 	}
 }
+
+func TestSyntaxIndex(t *testing.T) {
+	// Issue #3011
+	if _, err := compileToIR([]byte(`package main
+
+func Foo() float {
+	var a int
+	var b vec4
+	return b[a]
+}
+`)); err == nil {
+		t.Error("compileToIR must return an error but did not")
+	}
+	if _, err := compileToIR([]byte(`package main
+
+func Foo() int {
+	var a int
+	var b ivec4
+	return b[a]
+}
+`)); err == nil {
+		t.Error("compileToIR must return an error but did not")
+	}
+	if _, err := compileToIR([]byte(`package main
+
+func Foo() float {
+	var a int
+	var b mat4
+	return b[a][0]
+}
+`)); err != nil {
+		t.Error(err)
+	}
+	if _, err := compileToIR([]byte(`package main
+
+func Foo() float {
+	const a = 0
+	var b vec4
+	return b[a]
+}
+`)); err != nil {
+		t.Error(err)
+	}
+	if _, err := compileToIR([]byte(`package main
+
+func Foo() int {
+	const a = 0
+	var b ivec4
+	return b[a]
+}
+`)); err != nil {
+		t.Error(err)
+	}
+	if _, err := compileToIR([]byte(`package main
+
+func Foo() float {
+	const a = 0
+	var b mat4
+	return b[a][0]
+}
+`)); err != nil {
+		t.Error(err)
+	}
+}

internal/ui/context.go

@@ -95,7 +95,7 @@ func (c *context) updateFrameImpl(graphicsDriver graphicsdriver.Graphics, update
 		return nil
 	}
 
-	debug.Logf("----\n")
+	debug.FrameLogf("----\n")
 
 	if err := atlas.BeginFrame(graphicsDriver); err != nil {
 		return err
@@ -133,7 +133,7 @@ func (c *context) updateFrameImpl(graphicsDriver graphicsdriver.Graphics, update
 		updateCount = 1
 		c.updateCalled = true
 	}
-	debug.Logf("Update count per frame: %d\n", updateCount)
+	debug.FrameLogf("Update count per frame: %d\n", updateCount)
 
 	// Update the game.
 	for i := 0; i < updateCount; i++ {
@@ -192,7 +192,7 @@ func (c *context) drawGame(graphicsDriver graphicsdriver.Graphics, ui *UserInter
 		return err
 	}
 
-	const maxSkipCount = 3
+	const maxSkipCount = 4
 
 	if !forceDraw && !c.isOffscreenModified {
 		if c.skipCount < maxSkipCount {

internal/ui/image.go

@@ -158,7 +158,7 @@ func (i *Image) Fill(r, g, b, a float32, region image.Rectangle) {
 		i.tmpVerticesForFill = make([]float32, 4*graphics.VertexFloatCount)
 	}
 	// i.tmpVerticesForFill can be reused as this is sent to DrawTriangles immediately.
-	graphics.QuadVertices(
+	graphics.QuadVerticesFromSrcAndMatrix(
 		i.tmpVerticesForFill,
 		1, 1, float32(i.ui.whiteImage.width-1), float32(i.ui.whiteImage.height-1),
 		float32(i.width), 0, 0, float32(i.height), 0, 0,
@@ -235,7 +235,7 @@ func (i *bigOffscreenImage) drawTriangles(srcs [graphics.ShaderSrcImageCount]*Im
 			i.tmpVerticesForCopying = make([]float32, 4*graphics.VertexFloatCount)
 		}
 		// i.tmpVerticesForCopying can be reused as this is sent to DrawTriangles immediately.
-		graphics.QuadVertices(
+		graphics.QuadVerticesFromSrcAndMatrix(
 			i.tmpVerticesForCopying,
 			float32(i.region.Min.X), float32(i.region.Min.Y), float32(i.region.Max.X), float32(i.region.Max.Y),
 			bigOffscreenScale, 0, 0, bigOffscreenScale, 0, 0,
@@ -279,7 +279,7 @@ func (i *bigOffscreenImage) flush() {
 		i.tmpVerticesForFlushing = make([]float32, 4*graphics.VertexFloatCount)
 	}
 	// i.tmpVerticesForFlushing can be reused as this is sent to DrawTriangles in this function.
-	graphics.QuadVertices(
+	graphics.QuadVerticesFromSrcAndMatrix(
 		i.tmpVerticesForFlushing,
 		0, 0, float32(i.region.Dx()*bigOffscreenScale), float32(i.region.Dy()*bigOffscreenScale),
 		1.0/bigOffscreenScale, 0, 0, 1.0/bigOffscreenScale, float32(i.region.Min.X), float32(i.region.Min.Y),

internal/ui/ui_darwin.go

@@ -238,6 +238,7 @@ var (
 	sel_origResizable                 = objc.RegisterName("isOrigResizable")
 	sel_setCollectionBehavior         = objc.RegisterName("setCollectionBehavior:")
 	sel_setDelegate                   = objc.RegisterName("setDelegate:")
+	sel_setDocumentEdited             = objc.RegisterName("setDocumentEdited:")
 	sel_setOrigDelegate               = objc.RegisterName("setOrigDelegate:")
 	sel_setOrigResizable              = objc.RegisterName("setOrigResizable:")
 	sel_toggleFullScreen              = objc.RegisterName("toggleFullScreen:")
@@ -433,3 +434,13 @@ func initializeWindowAfterCreation(w *glfw.Window) error {
 func (u *UserInterface) skipTaskbar() error {
 	return nil
 }
+
+// setDocumentEdited must be called from the main thread.
+func (u *UserInterface) setDocumentEdited(edited bool) error {
+	w, err := u.window.GetCocoaWindow()
+	if err != nil {
+		return err
+	}
+	objc.ID(w).Send(sel_setDocumentEdited, edited)
+	return nil
+}

internal/ui/ui_glfw.go

@@ -568,6 +568,22 @@ func (u *UserInterface) setWindowClosingHandled(handled bool) {
 	u.m.Lock()
 	u.windowClosingHandled = handled
 	u.m.Unlock()
+
+	if !u.isRunning() {
+		return
+	}
+	if u.isTerminated() {
+		return
+	}
+	u.mainThread.Call(func() {
+		if u.isTerminated() {
+			return
+		}
+		if err := u.setDocumentEdited(handled); err != nil {
+			u.setError(err)
+			return
+		}
+	})
 }
 
 // isFullscreen must be called from the main thread.
@@ -874,6 +890,13 @@ func (u *UserInterface) createWindow() error {
 		return err
 	}
 
+	u.m.Lock()
+	closingHandled := u.windowClosingHandled
+	u.m.Unlock()
+	if err := u.setDocumentEdited(closingHandled); err != nil {
+		return err
+	}
+
 	return nil
 }
 

internal/ui/ui_js.go

@@ -512,6 +512,7 @@ func (u *UserInterface) init() error {
 	canvasStyle.Set("height", "100%")
 	canvasStyle.Set("margin", "0")
 	canvasStyle.Set("padding", "0")
+	canvasStyle.Set("display", "block")
 
 	// Make the canvas focusable.
 	canvas.Call("setAttribute", "tabindex", 1)
@@ -707,14 +708,21 @@ func (u *UserInterface) appendDroppedFiles(data js.Value) {
 	defer u.dropFileM.Unlock()
 	items := data.Get("items")
 
+	var entries []js.Value
 	for i := 0; i < items.Length(); i++ {
 		kind := items.Index(i).Get("kind").String()
 		switch kind {
 		case "file":
-			fs := items.Index(i).Call("webkitGetAsEntry").Get("filesystem").Get("root")
-			u.inputState.DroppedFiles = file.NewFileEntryFS(fs)
+			entries = append(entries, items.Index(i).Call("webkitGetAsEntry").Get("filesystem").Get("root"))
+		}
+	}
+	if len(entries) > 0 {
+		fs, err := file.NewFileEntryFS(entries)
+		if err != nil {
+			u.setError(err)
 			return
 		}
+		u.inputState.DroppedFiles = fs
 	}
 }
 

internal/ui/ui_linbsd.go

@@ -200,3 +200,7 @@ func initializeWindowAfterCreation(w *glfw.Window) error {
 func (u *UserInterface) skipTaskbar() error {
 	return nil
 }
+
+func (u *UserInterface) setDocumentEdited(edited bool) error {
+	return nil
+}

internal/ui/ui_windows.go

@@ -242,6 +242,10 @@ func (u *UserInterface) skipTaskbar() error {
 	return nil
 }
 
+func (u *UserInterface) setDocumentEdited(edited bool) error {
+	return nil
+}
+
 func init() {
 	if microsoftgdk.IsXbox() {
 		// TimeBeginPeriod might not be defined in Xbox.

shaderprecomp/shaderprecomp_playstation5.go

@@ -20,7 +20,6 @@ import (
 	"io"
 
 	"github.com/hajimehoshi/ebiten/v2/internal/graphics"
-	"github.com/hajimehoshi/ebiten/v2/internal/graphicsdriver/playstation5"
 	"github.com/hajimehoshi/ebiten/v2/internal/shaderir/pssl"
 )
 
@@ -41,10 +40,3 @@ func CompileToPSSL(vertexWriter, pixelWriter io.Writer, source *ShaderSource) er
 	}
 	return nil
 }
-
-// RegisterPlayStationShaders registers a precompiled PlayStation Shader for a shader source.
-//
-// RegisterPlayStationShaders is concurrent-safe.
-func RegisterPlayStationShaders(source *ShaderSource, vertexShader, pixelShader []byte) {
-	playstation5.RegisterPrecompiledShaders(source.source, vertexShader, pixelShader)
-}

vector/export_test.go

@@ -12,12 +12,21 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-//go:build playstation5
+package vector
 
-// This is a separated pure Go file so that the `shaderprecomp` package can use this without Cgo.
-
-package playstation5
-
-func RegisterPrecompiledShaders(source []byte, vertex, pixel []byte) {
-	// TODO: Implement this.
+type Point struct {
+	X, Y float32
+}
+
+func IsPointCloseToSegment(p, p0, p1 Point, allow float32) bool {
+	return isPointCloseToSegment(point{
+		x: p.X,
+		y: p.Y,
+	}, point{
+		x: p0.X,
+		y: p0.Y,
+	}, point{
+		x: p1.X,
+		y: p1.Y,
+	}, allow)
 }

vector/path.go

@@ -31,6 +31,23 @@ const (
 	CounterClockwise
 )
 
+type opType int
+
+const (
+	opTypeMoveTo opType = iota
+	opTypeLineTo
+	opTypeQuadTo
+	opTypeCubicTo
+	opTypeClose
+)
+
+type op struct {
+	typ opType
+	p1  point
+	p2  point
+	p3  point
+}
+
 func abs(x float32) float32 {
 	if x < 0 {
 		return -x
@@ -48,21 +65,18 @@ type subpath struct {
 	closed bool
 }
 
-func (s *subpath) currentPosition() (point, bool) {
-	if len(s.points) == 0 {
-		return point{}, false
-	}
-	if s.closed {
-		return point{}, false
-	}
-	return s.points[len(s.points)-1], true
+// reset resets the subpath.
+// reset doesn't release the allocated memory so that the memory can be reused.
+func (s *subpath) reset() {
+	s.points = s.points[:0]
+	s.closed = false
 }
 
-func (s *subpath) pointCount() int {
+func (s subpath) pointCount() int {
 	return len(s.points)
 }
 
-func (s *subpath) lastPoint() point {
+func (s subpath) lastPoint() point {
 	return s.points[len(s.points)-1]
 }
 
@@ -71,11 +85,13 @@ func (s *subpath) appendPoint(pt point) {
 		panic("vector: a closed subpathment cannot append a new point")
 	}
 
+	if len(s.points) > 0 {
 		// Do not add a too close point to the last point.
 		// This can cause unexpected rendering results.
 		if lp := s.lastPoint(); abs(lp.x-pt.x) < 1e-2 && abs(lp.y-pt.y) < 1e-2 {
 			return
 		}
+	}
 
 	s.points = append(s.points, pt)
 }
@@ -91,15 +107,66 @@ func (s *subpath) close() {
 
 // Path represents a collection of path subpathments.
 type Path struct {
-	subpaths []*subpath
+	ops []op
+
+	subpaths []subpath
+}
+
+// reset resets the path.
+// reset doesn't release the allocated memory so that the memory can be reused.
+func (p *Path) reset() {
+	p.ops = p.ops[:0]
+	p.subpaths = p.subpaths[:0]
+}
+
+func (p *Path) appendNewSubpath(pt point) {
+	if cap(p.subpaths) > len(p.subpaths) {
+		// Reuse the last subpath since the last subpath might have an already allocated slice.
+		p.subpaths = p.subpaths[:len(p.subpaths)+1]
+		p.subpaths[len(p.subpaths)-1].reset()
+		p.subpaths[len(p.subpaths)-1].appendPoint(pt)
+		return
+	}
+	p.subpaths = append(p.subpaths, subpath{
+		points: []point{pt},
+	})
+}
+
+func (p *Path) ensureSubpaths() []subpath {
+	if len(p.subpaths) > 0 || len(p.ops) == 0 {
+		return p.subpaths
+	}
+
+	var cur point
+	for _, op := range p.ops {
+		switch op.typ {
+		case opTypeMoveTo:
+			p.appendNewSubpath(op.p1)
+			cur = op.p1
+		case opTypeLineTo:
+			p.lineTo(op.p1)
+			cur = op.p1
+		case opTypeQuadTo:
+			p.quadTo(cur, op.p1, op.p2, 0)
+			cur = op.p2
+		case opTypeCubicTo:
+			p.cubicTo(cur, op.p1, op.p2, op.p3, 0)
+			cur = op.p3
+		case opTypeClose:
+			p.close()
+			cur = point{}
+		}
+	}
+
+	return p.subpaths
 }
 
 // MoveTo starts a new subpath with the given position (x, y) without adding a subpath,
 func (p *Path) MoveTo(x, y float32) {
-	p.subpaths = append(p.subpaths, &subpath{
-		points: []point{
-			{x: x, y: y},
-		},
+	p.subpaths = p.subpaths[:0]
+	p.ops = append(p.ops, op{
+		typ: opTypeMoveTo,
+		p1:  point{x: x, y: y},
 	})
 }
 
@@ -107,22 +174,52 @@ func (p *Path) MoveTo(x, y float32) {
 // and ends to the given position (x, y).
 // If p doesn't have any subpaths or the last subpath is closed, LineTo sets (x, y) as the start position of a new subpath.
 func (p *Path) LineTo(x, y float32) {
-	if len(p.subpaths) == 0 || p.subpaths[len(p.subpaths)-1].closed {
-		p.subpaths = append(p.subpaths, &subpath{
-			points: []point{
-				{x: x, y: y},
-			},
+	p.subpaths = p.subpaths[:0]
+	p.ops = append(p.ops, op{
+		typ: opTypeLineTo,
+		p1:  point{x: x, y: y},
 	})
-		return
-	}
-
-	p.subpaths[len(p.subpaths)-1].appendPoint(point{x: x, y: y})
 }
 
 // QuadTo adds a quadratic Bézier curve to the path.
 // (x1, y1) is the control point, and (x2, y2) is the destination.
 func (p *Path) QuadTo(x1, y1, x2, y2 float32) {
-	p.quadTo(point{x: x1, y: y1}, point{x: x2, y: y2}, 0)
+	p.subpaths = p.subpaths[:0]
+	p.ops = append(p.ops, op{
+		typ: opTypeQuadTo,
+		p1:  point{x: x1, y: y1},
+		p2:  point{x: x2, y: y2},
+	})
+}
+
+// CubicTo adds a cubic Bézier curve to the path.
+// (x1, y1) and (x2, y2) are the control points, and (x3, y3) is the destination.
+func (p *Path) CubicTo(x1, y1, x2, y2, x3, y3 float32) {
+	p.subpaths = p.subpaths[:0]
+	p.ops = append(p.ops, op{
+		typ: opTypeCubicTo,
+		p1:  point{x: x1, y: y1},
+		p2:  point{x: x2, y: y2},
+		p3:  point{x: x3, y: y3},
+	})
+}
+
+// Close adds a new line from the last position of the current subpath to the first position of the current subpath,
+// and marks the current subpath closed.
+// Following operations for this path will start with a new subpath.
+func (p *Path) Close() {
+	p.subpaths = p.subpaths[:0]
+	p.ops = append(p.ops, op{
+		typ: opTypeClose,
+	})
+}
+
+func (p *Path) lineTo(pt point) {
+	if len(p.subpaths) == 0 || p.subpaths[len(p.subpaths)-1].closed {
+		p.appendNewSubpath(pt)
+		return
+	}
+	p.subpaths[len(p.subpaths)-1].appendPoint(pt)
 }
 
 // lineForTwoPoints returns parameters for a line passing through p0 and p1.
@@ -135,12 +232,17 @@ func lineForTwoPoints(p0, p1 point) (a, b, c float32) {
 }
 
 // isPointCloseToSegment detects the distance between a segment (x0, y0)-(x1, y1) and a point (x, y) is less than allow.
+// If p0 and p1 are the same, isPointCloseToSegment returns true when the distance between p0 and p is less than allow.
 func isPointCloseToSegment(p, p0, p1 point, allow float32) bool {
+	if p0 == p1 {
+		return allow*allow >= (p0.x-p.x)*(p0.x-p.x)+(p0.y-p.y)*(p0.y-p.y)
+	}
+
 	a, b, c := lineForTwoPoints(p0, p1)
 
 	// The distance between a line ax+by+c=0 and (x0, y0) is
 	//     |ax0 + by0 + c| / √(a² + b²)
-	return allow*allow*(a*a+b*b) > (a*p.x+b*p.y+c)*(a*p.x+b*p.y+c)
+	return allow*allow*(a*a+b*b) >= (a*p.x+b*p.y+c)*(a*p.x+b*p.y+c)
 }
 
 // crossingPointForTwoLines returns a crossing point for two lines.
@@ -154,24 +256,13 @@ func crossingPointForTwoLines(p00, p01, p10, p11 point) point {
 	}
 }
 
-func (p *Path) currentPosition() (point, bool) {
-	if len(p.subpaths) == 0 {
-		return point{}, false
-	}
-	return p.subpaths[len(p.subpaths)-1].currentPosition()
-}
-
-func (p *Path) quadTo(p1, p2 point, level int) {
+func (p *Path) quadTo(p0, p1, p2 point, level int) {
 	if level > 10 {
 		return
 	}
 
-	p0, ok := p.currentPosition()
-	if !ok {
-		p0 = p1
-	}
 	if isPointCloseToSegment(p1, p0, p2, 0.5) {
-		p.LineTo(p2.x, p2.y)
+		p.lineTo(p2)
 		return
 	}
 
@@ -187,27 +278,17 @@ func (p *Path) quadTo(p1, p2 point, level int) {
 		x: (p01.x + p12.x) / 2,
 		y: (p01.y + p12.y) / 2,
 	}
-	p.quadTo(p01, p012, level+1)
-	p.quadTo(p12, p2, level+1)
+	p.quadTo(p0, p01, p012, level+1)
+	p.quadTo(p012, p12, p2, level+1)
 }
 
-// CubicTo adds a cubic Bézier curve to the path.
-// (x1, y1) and (x2, y2) are the control points, and (x3, y3) is the destination.
-func (p *Path) CubicTo(x1, y1, x2, y2, x3, y3 float32) {
-	p.cubicTo(point{x: x1, y: y1}, point{x: x2, y: y2}, point{x: x3, y: y3}, 0)
-}
-
-func (p *Path) cubicTo(p1, p2, p3 point, level int) {
+func (p *Path) cubicTo(p0, p1, p2, p3 point, level int) {
 	if level > 10 {
 		return
 	}
 
-	p0, ok := p.currentPosition()
-	if !ok {
-		p0 = p1
-	}
 	if isPointCloseToSegment(p1, p0, p3, 0.5) && isPointCloseToSegment(p2, p0, p3, 0.5) {
-		p.LineTo(p3.x, p3.y)
+		p.lineTo(p3)
 		return
 	}
 
@@ -235,8 +316,8 @@ func (p *Path) cubicTo(p1, p2, p3 point, level int) {
 		x: (p012.x + p123.x) / 2,
 		y: (p012.y + p123.y) / 2,
 	}
-	p.cubicTo(p01, p012, p0123, level+1)
-	p.cubicTo(p123, p23, p3, level+1)
+	p.cubicTo(p0, p01, p012, p0123, level+1)
+	p.cubicTo(p0123, p123, p23, p3, level+1)
 }
 
 func normalize(p point) point {
@@ -248,6 +329,26 @@ func cross(p0, p1 point) float32 {
 	return p0.x*p1.y - p1.x*p0.y
 }
 
+func (p *Path) currentPosition() (point, bool) {
+	if len(p.ops) == 0 {
+		return point{}, false
+	}
+	op := p.ops[len(p.ops)-1]
+	switch op.typ {
+	case opTypeMoveTo:
+		return op.p1, true
+	case opTypeLineTo:
+		return op.p1, true
+	case opTypeQuadTo:
+		return op.p2, true
+	case opTypeCubicTo:
+		return op.p3, true
+	case opTypeClose:
+		return point{}, false
+	}
+	return point{}, false
+}
+
 // ArcTo adds an arc curve to the path.
 // (x1, y1) is the first control point, and (x2, y2) is the second control point.
 func (p *Path) ArcTo(x1, y1, x2, y2, radius float32) {
@@ -362,7 +463,7 @@ func (p *Path) Arc(x, y, radius, startAngle, endAngle float32, dir Direction) {
 	p.LineTo(x0, y0)
 
 	// Calculate the control points for an approximated Bézier curve.
-	// See https://docs.microsoft.com/en-us/xamarin/xamarin-forms/user-interface/graphics/skiasharp/curves/beziers.
+	// See https://learn.microsoft.com/en-us/previous-versions/xamarin/xamarin-forms/user-interface/graphics/skiasharp/curves/beziers.
 	l := radius * float32(math.Tan(da/4)*4/3)
 	var cx0, cy0, cx1, cy1 float32
 	if dir == Clockwise {
@@ -379,15 +480,11 @@ func (p *Path) Arc(x, y, radius, startAngle, endAngle float32, dir Direction) {
 	p.CubicTo(cx0, cy0, cx1, cy1, x1, y1)
 }
 
-// Close adds a new line from the last position of the current subpath to the first position of the current subpath,
-// and marks the current subpath closed.
-// Following operations for this path will start with a new subpath.
-func (p *Path) Close() {
+func (p *Path) close() {
 	if len(p.subpaths) == 0 {
 		return
 	}
-	subpath := p.subpaths[len(p.subpaths)-1]
-	subpath.close()
+	p.subpaths[len(p.subpaths)-1].close()
 }
 
 // AppendVerticesAndIndicesForFilling appends vertices and indices to fill this path and returns them.
@@ -405,7 +502,7 @@ func (p *Path) AppendVerticesAndIndicesForFilling(vertices []ebiten.Vertex, indi
 	// TODO: Add tests.
 
 	base := uint16(len(vertices))
-	for _, subpath := range p.subpaths {
+	for _, subpath := range p.ensureSubpaths() {
 		if subpath.pointCount() < 3 {
 			continue
 		}
@@ -486,12 +583,14 @@ func (p *Path) AppendVerticesAndIndicesForStroke(vertices []ebiten.Vertex, indic
 		return vertices, indices
 	}
 
-	for _, subpath := range p.subpaths {
+	var rects [][4]point
+	var tmpPath Path
+	for _, subpath := range p.ensureSubpaths() {
 		if subpath.pointCount() < 2 {
 			continue
 		}
 
-		var rects [][4]point
+		rects = rects[:0]
 		for i := 0; i < subpath.pointCount()-1; i++ {
 			pt := subpath.points[i]
 
@@ -571,46 +670,49 @@ func (p *Path) AppendVerticesAndIndicesForStroke(vertices []ebiten.Vertex, indic
 				delta := math.Pi - da
 				exceed := float32(math.Abs(1/math.Sin(float64(delta/2)))) > op.MiterLimit
 
-				var quad Path
-				quad.MoveTo(c.x, c.y)
+				// Quadrilateral
+				tmpPath.reset()
+				tmpPath.MoveTo(c.x, c.y)
 				if da < math.Pi {
-					quad.LineTo(rect[1].x, rect[1].y)
+					tmpPath.LineTo(rect[1].x, rect[1].y)
 					if !exceed {
 						pt := crossingPointForTwoLines(rect[0], rect[1], nextRect[0], nextRect[1])
-						quad.LineTo(pt.x, pt.y)
+						tmpPath.LineTo(pt.x, pt.y)
 					}
-					quad.LineTo(nextRect[0].x, nextRect[0].y)
+					tmpPath.LineTo(nextRect[0].x, nextRect[0].y)
 				} else {
-					quad.LineTo(rect[3].x, rect[3].y)
+					tmpPath.LineTo(rect[3].x, rect[3].y)
 					if !exceed {
 						pt := crossingPointForTwoLines(rect[2], rect[3], nextRect[2], nextRect[3])
-						quad.LineTo(pt.x, pt.y)
+						tmpPath.LineTo(pt.x, pt.y)
 					}
-					quad.LineTo(nextRect[2].x, nextRect[2].y)
+					tmpPath.LineTo(nextRect[2].x, nextRect[2].y)
 				}
-				vertices, indices = quad.AppendVerticesAndIndicesForFilling(vertices, indices)
+				vertices, indices = tmpPath.AppendVerticesAndIndicesForFilling(vertices, indices)
 
 			case LineJoinBevel:
-				var tri Path
-				tri.MoveTo(c.x, c.y)
+				// Triangle
+				tmpPath.reset()
+				tmpPath.MoveTo(c.x, c.y)
 				if da < math.Pi {
-					tri.LineTo(rect[1].x, rect[1].y)
-					tri.LineTo(nextRect[0].x, nextRect[0].y)
+					tmpPath.LineTo(rect[1].x, rect[1].y)
+					tmpPath.LineTo(nextRect[0].x, nextRect[0].y)
 				} else {
-					tri.LineTo(rect[3].x, rect[3].y)
-					tri.LineTo(nextRect[2].x, nextRect[2].y)
+					tmpPath.LineTo(rect[3].x, rect[3].y)
+					tmpPath.LineTo(nextRect[2].x, nextRect[2].y)
 				}
-				vertices, indices = tri.AppendVerticesAndIndicesForFilling(vertices, indices)
+				vertices, indices = tmpPath.AppendVerticesAndIndicesForFilling(vertices, indices)
 
 			case LineJoinRound:
-				var arc Path
-				arc.MoveTo(c.x, c.y)
+				// Arc
+				tmpPath.reset()
+				tmpPath.MoveTo(c.x, c.y)
 				if da < math.Pi {
-					arc.Arc(c.x, c.y, op.Width/2, a0, a1, Clockwise)
+					tmpPath.Arc(c.x, c.y, op.Width/2, a0, a1, Clockwise)
 				} else {
-					arc.Arc(c.x, c.y, op.Width/2, a0+math.Pi, a1+math.Pi, CounterClockwise)
+					tmpPath.Arc(c.x, c.y, op.Width/2, a0+math.Pi, a1+math.Pi, CounterClockwise)
 				}
-				vertices, indices = arc.AppendVerticesAndIndicesForFilling(vertices, indices)
+				vertices, indices = tmpPath.AppendVerticesAndIndicesForFilling(vertices, indices)
 			}
 		}
 
@@ -635,10 +737,11 @@ func (p *Path) AppendVerticesAndIndicesForStroke(vertices []ebiten.Vertex, indic
 					y: (startR[0].y + startR[2].y) / 2,
 				}
 				a := float32(math.Atan2(float64(startR[0].y-startR[2].y), float64(startR[0].x-startR[2].x)))
-				var arc Path
-				arc.MoveTo(startR[0].x, startR[0].y)
-				arc.Arc(c.x, c.y, op.Width/2, a, a+math.Pi, CounterClockwise)
-				vertices, indices = arc.AppendVerticesAndIndicesForFilling(vertices, indices)
+				// Arc
+				tmpPath.reset()
+				tmpPath.MoveTo(startR[0].x, startR[0].y)
+				tmpPath.Arc(c.x, c.y, op.Width/2, a, a+math.Pi, CounterClockwise)
+				vertices, indices = tmpPath.AppendVerticesAndIndicesForFilling(vertices, indices)
 			}
 			{
 				c := point{
@@ -646,10 +749,11 @@ func (p *Path) AppendVerticesAndIndicesForStroke(vertices []ebiten.Vertex, indic
 					y: (endR[1].y + endR[3].y) / 2,
 				}
 				a := float32(math.Atan2(float64(endR[1].y-endR[3].y), float64(endR[1].x-endR[3].x)))
-				var arc Path
-				arc.MoveTo(endR[1].x, endR[1].y)
-				arc.Arc(c.x, c.y, op.Width/2, a, a+math.Pi, Clockwise)
-				vertices, indices = arc.AppendVerticesAndIndicesForFilling(vertices, indices)
+				// Arc
+				tmpPath.reset()
+				tmpPath.MoveTo(endR[1].x, endR[1].y)
+				tmpPath.Arc(c.x, c.y, op.Width/2, a, a+math.Pi, Clockwise)
+				vertices, indices = tmpPath.AppendVerticesAndIndicesForFilling(vertices, indices)
 			}
 
 		case LineCapSquare:
@@ -659,24 +763,26 @@ func (p *Path) AppendVerticesAndIndicesForStroke(vertices []ebiten.Vertex, indic
 				s, c := math.Sincos(a)
 				dx, dy := float32(c)*op.Width/2, float32(s)*op.Width/2
 
-				var quad Path
-				quad.MoveTo(startR[0].x, startR[0].y)
-				quad.LineTo(startR[0].x+dx, startR[0].y+dy)
-				quad.LineTo(startR[2].x+dx, startR[2].y+dy)
-				quad.LineTo(startR[2].x, startR[2].y)
-				vertices, indices = quad.AppendVerticesAndIndicesForFilling(vertices, indices)
+				// Quadrilateral
+				tmpPath.reset()
+				tmpPath.MoveTo(startR[0].x, startR[0].y)
+				tmpPath.LineTo(startR[0].x+dx, startR[0].y+dy)
+				tmpPath.LineTo(startR[2].x+dx, startR[2].y+dy)
+				tmpPath.LineTo(startR[2].x, startR[2].y)
+				vertices, indices = tmpPath.AppendVerticesAndIndicesForFilling(vertices, indices)
 			}
 			{
 				a := math.Atan2(float64(endR[1].y-endR[0].y), float64(endR[1].x-endR[0].x))
 				s, c := math.Sincos(a)
 				dx, dy := float32(c)*op.Width/2, float32(s)*op.Width/2
 
-				var quad Path
-				quad.MoveTo(endR[1].x, endR[1].y)
-				quad.LineTo(endR[1].x+dx, endR[1].y+dy)
-				quad.LineTo(endR[3].x+dx, endR[3].y+dy)
-				quad.LineTo(endR[3].x, endR[3].y)
-				vertices, indices = quad.AppendVerticesAndIndicesForFilling(vertices, indices)
+				// Quadrilateral
+				tmpPath.reset()
+				tmpPath.MoveTo(endR[1].x, endR[1].y)
+				tmpPath.LineTo(endR[1].x+dx, endR[1].y+dy)
+				tmpPath.LineTo(endR[3].x+dx, endR[3].y+dy)
+				tmpPath.LineTo(endR[3].x, endR[3].y)
+				vertices, indices = tmpPath.AppendVerticesAndIndicesForFilling(vertices, indices)
 			}
 		}
 	}

vector/path_test.go

@@ -0,0 +1,88 @@
+// Copyright 2024 The Ebitengine Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package vector_test
+
+import (
+	"testing"
+
+	"github.com/hajimehoshi/ebiten/v2/vector"
+)
+
+func TestIsPointCloseToSegment(t *testing.T) {
+	testCases := []struct {
+		p     vector.Point
+		p0    vector.Point
+		p1    vector.Point
+		allow float32
+		want  bool
+	}{
+		{
+			p:     vector.Point{0.5, 0.5},
+			p0:    vector.Point{0, 0},
+			p1:    vector.Point{1, 0},
+			allow: 1,
+			want:  true,
+		},
+		{
+			p:     vector.Point{0.5, 1.5},
+			p0:    vector.Point{0, 0},
+			p1:    vector.Point{1, 0},
+			allow: 1,
+			want:  false,
+		},
+		{
+			p:     vector.Point{0.5, 0.5},
+			p0:    vector.Point{0, 0},
+			p1:    vector.Point{1, 1},
+			allow: 0,
+			want:  true,
+		},
+		{
+			p:     vector.Point{0, 1},
+			p0:    vector.Point{0, 0},
+			p1:    vector.Point{1, 1},
+			allow: 0.7,
+			want:  false,
+		},
+		{
+			p:     vector.Point{0, 1},
+			p0:    vector.Point{0, 0},
+			p1:    vector.Point{1, 1},
+			allow: 0.8,
+			want:  true,
+		},
+		{
+			// p0 and p1 are the same.
+			p:     vector.Point{0, 1},
+			p0:    vector.Point{0.5, 0.5},
+			p1:    vector.Point{0.5, 0.5},
+			allow: 0.7,
+			want:  false,
+		},
+		{
+			// p0 and p1 are the same.
+			p:     vector.Point{0, 1},
+			p0:    vector.Point{0.5, 0.5},
+			p1:    vector.Point{0.5, 0.5},
+			allow: 0.8,
+			want:  true,
+		},
+	}
+	for _, tc := range testCases {
+		if got := vector.IsPointCloseToSegment(tc.p, tc.p0, tc.p1, tc.allow); got != tc.want {
+			t.Errorf("got: %v, want: %v", got, tc.want)
+		}
+	}
+}

vector/util.go

@@ -18,6 +18,7 @@ import (
 	"image"
 	"image/color"
 	"math"
+	"sync"
 
 	"github.com/hajimehoshi/ebiten/v2"
 )
@@ -27,6 +28,18 @@ var (
 	whiteSubImage = whiteImage.SubImage(image.Rect(1, 1, 2, 2)).(*ebiten.Image)
 )
 
+var (
+	cachedVertices []ebiten.Vertex
+	cachedIndices  []uint16
+	cacheM         sync.Mutex
+)
+
+func useCachedVerticesAndIndices(fn func([]ebiten.Vertex, []uint16) (vs []ebiten.Vertex, is []uint16)) {
+	cacheM.Lock()
+	defer cacheM.Unlock()
+	cachedVertices, cachedIndices = fn(cachedVertices[:0], cachedIndices[:0])
+}
+
 func init() {
 	b := whiteImage.Bounds()
 	pix := make([]byte, 4*b.Dx()*b.Dy())
@@ -63,9 +76,12 @@ func StrokeLine(dst *ebiten.Image, x0, y0, x1, y1 float32, strokeWidth float32,
 	path.LineTo(x1, y1)
 	strokeOp := &StrokeOptions{}
 	strokeOp.Width = strokeWidth
-	vs, is := path.AppendVerticesAndIndicesForStroke(nil, nil, strokeOp)
 
+	useCachedVerticesAndIndices(func(vs []ebiten.Vertex, is []uint16) ([]ebiten.Vertex, []uint16) {
+		vs, is = path.AppendVerticesAndIndicesForStroke(vs, is, strokeOp)
 		drawVerticesForUtil(dst, vs, is, clr, antialias)
+		return vs, is
+	})
 }
 
 // DrawFilledRect fills a rectangle with the specified width and color.
@@ -75,9 +91,12 @@ func DrawFilledRect(dst *ebiten.Image, x, y, width, height float32, clr color.Co
 	path.LineTo(x, y+height)
 	path.LineTo(x+width, y+height)
 	path.LineTo(x+width, y)
-	vs, is := path.AppendVerticesAndIndicesForFilling(nil, nil)
 
+	useCachedVerticesAndIndices(func(vs []ebiten.Vertex, is []uint16) ([]ebiten.Vertex, []uint16) {
+		vs, is = path.AppendVerticesAndIndicesForFilling(vs, is)
 		drawVerticesForUtil(dst, vs, is, clr, antialias)
+		return vs, is
+	})
 }
 
 // StrokeRect strokes a rectangle with the specified width and color.
@@ -94,18 +113,24 @@ func StrokeRect(dst *ebiten.Image, x, y, width, height float32, strokeWidth floa
 	strokeOp := &StrokeOptions{}
 	strokeOp.Width = strokeWidth
 	strokeOp.MiterLimit = 10
-	vs, is := path.AppendVerticesAndIndicesForStroke(nil, nil, strokeOp)
 
+	useCachedVerticesAndIndices(func(vs []ebiten.Vertex, is []uint16) ([]ebiten.Vertex, []uint16) {
+		vs, is = path.AppendVerticesAndIndicesForStroke(vs, is, strokeOp)
 		drawVerticesForUtil(dst, vs, is, clr, antialias)
+		return vs, is
+	})
 }
 
 // DrawFilledCircle fills a circle with the specified center position (cx, cy), the radius (r), width and color.
 func DrawFilledCircle(dst *ebiten.Image, cx, cy, r float32, clr color.Color, antialias bool) {
 	var path Path
 	path.Arc(cx, cy, r, 0, 2*math.Pi, Clockwise)
-	vs, is := path.AppendVerticesAndIndicesForFilling(nil, nil)
 
+	useCachedVerticesAndIndices(func(vs []ebiten.Vertex, is []uint16) ([]ebiten.Vertex, []uint16) {
+		vs, is = path.AppendVerticesAndIndicesForFilling(vs, is)
 		drawVerticesForUtil(dst, vs, is, clr, antialias)
+		return vs, is
+	})
 }
 
 // StrokeCircle strokes a circle with the specified center position (cx, cy), the radius (r), width and color.
@@ -118,7 +143,10 @@ func StrokeCircle(dst *ebiten.Image, cx, cy, r float32, strokeWidth float32, clr
 
 	strokeOp := &StrokeOptions{}
 	strokeOp.Width = strokeWidth
-	vs, is := path.AppendVerticesAndIndicesForStroke(nil, nil, strokeOp)
 
+	useCachedVerticesAndIndices(func(vs []ebiten.Vertex, is []uint16) ([]ebiten.Vertex, []uint16) {
+		vs, is = path.AppendVerticesAndIndicesForStroke(vs, is, strokeOp)
 		drawVerticesForUtil(dst, vs, is, clr, antialias)
+		return vs, is
+	})
 }