diff --git a/.gitignore b/.gitignore
index ddefe29..3ea57b8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
+.strm
 vendor/
 result
 snapshots/
diff --git a/.strm/config b/.strm/config
deleted file mode 100644
index 9637d8f..0000000
--- a/.strm/config
+++ /dev/null
@@ -1,8 +0,0 @@
-[remotes]
-[remotes.local]
-enabled = true
-repo = 'sumi'
-
-[remotes.origin]
-enabled = true
-repo = 'sumi'
diff --git a/.strm/refs/adf/head b/.strm/refs/adf/head
deleted file mode 100644
index 77bbc4f..0000000
--- a/.strm/refs/adf/head
+++ /dev/null
@@ -1 +0,0 @@
-0723fe496ed6c679262e6965dadf4839011f2eb749a529010366a9629f2568d9
\ No newline at end of file
diff --git a/.strm/refs/head b/.strm/refs/head
deleted file mode 100644
index 77bbc4f..0000000
--- a/.strm/refs/head
+++ /dev/null
@@ -1 +0,0 @@
-0723fe496ed6c679262e6965dadf4839011f2eb749a529010366a9629f2568d9
\ No newline at end of file
diff --git a/.strm/storage/0.efile b/.strm/storage/0.efile
deleted file mode 100755
index e69de29..0000000
diff --git a/.strm/storage/0.idx b/.strm/storage/0.idx
deleted file mode 100755
index 3efc63b..0000000
Binary files a/.strm/storage/0.idx and /dev/null differ
diff --git a/.strm/storage/0.sfile b/.strm/storage/0.sfile
deleted file mode 100755
index 2667792..0000000
Binary files a/.strm/storage/0.sfile and /dev/null differ
diff --git a/main.go b/main.go
index 598f380..f1cdfab 100644
--- a/main.go
+++ b/main.go
@@ -19,7 +19,13 @@ import (
 
 func Bootstrap() *Env {
 
-	rl.InitWindow(800, 600, "bootstrap")
+	// HiDPI: report logical sizes to layout code while drawing into the full
+	// framebuffer. Required for correct scaling on Wayland/XWayland mixed-DPI
+	// setups. Leaving the window non-resizable so tiling WMs (Hyprland) treat
+	// it as a floating window via fixed min/max size hints.
+	rl.SetConfigFlags(rl.FlagWindowHighdpi)
+
+	rl.InitWindow(800, 600, "sumi sierpinski arrow")
 
 	monitor := rl.GetCurrentMonitor()
 	fmt.Printf("Using monitor %d\n", monitor)
@@ -59,7 +65,11 @@ func Bootstrap() *Env {
 	controlsWidth := int(float64(windowWidth) * controlsRelWidth)
 	viewportWidth := windowWidth - controlsWidth
 
+	// Reopen at the real size so the window's fixed-size hints land on
+	// Hyprland the first time — avoids a tiling layout being applied and
+	// the resize flicker from SetWindowSize.
 	rl.CloseWindow()
+	rl.SetConfigFlags(rl.FlagWindowHighdpi)
 
 	log.Printf("Storing snapshots at '%s'\n", snapshotsPath)
 
@@ -79,7 +89,6 @@ func Bootstrap() *Env {
 		Offscreen: sg.Rect{X: 0, Y: 0, Width: float32(graphicsWidth), Height: float32(graphicsHeight)},
 	}
 
-	//rl.SetConfigFlags(rl.FlagMsaa4xHint)
 	rl.InitWindow(int32(layout.Window.Width), int32(layout.Window.Height), "sumi sierpinski arrow")
 	rl.SetTargetFPS(30)