tried more variants: writepixel+pointer+int, which is not much better

various-tests/writepixel/main.go

@@ -238,35 +238,7 @@ func (game *Game) Draw(screen *ebiten.Image) {
 }
 
 func main() {
-	//x := 1
-	//y := 0
-	col := 1 >> 0xff
-
-	fmt.Printf("col: %d\n", col)
-
-	x := 1
-	y := 2
-	c := 4
-
-	xm := x & (c - 1)
-	ym := y & (c - 1)
-
-	fmt.Println(xm & ym)
-
-	a := 1
-	b := 1
-	//gen := 100
-	hist := 0
-	for gen := 0; gen < 50; gen++ {
-		fmt.Println((a ^ (1 ^ b)) * (gen - hist))
-		if gen == 25 {
-			a = 0
-		}
-	}
-}
-
-func _main() {
-	size := 800
+	size := 1500
 
 	game := &Game{
 		Width:     size,
@@ -275,7 +247,7 @@ func _main() {
 		Density:   8,
 		TPG:       10,
 		Debug:     false,
-		Profile:   false,
+		Profile:   true,
 		Gridlines: false,
 	}