diff --git a/deno.lock b/deno.lock
new file mode 100644
index 0000000..93e7c64
--- /dev/null
+++ b/deno.lock
@@ -0,0 +1,6 @@
+{
+  "version": "2",
+  "remote": {
+    "https://deno.land/x/byte_type@0.1.7/ffi.ts": "5bc603fd9d0b695bcd1bdaeb45e6e34b0925d5cd8da41ceaec290570a55287e0"
+  }
+}
diff --git a/examples/sprite/main.ts b/examples/sprite/main.ts
index e748115..fa7c675 100644
--- a/examples/sprite/main.ts
+++ b/examples/sprite/main.ts
@@ -1,5 +1,5 @@
 import { EventType, Rect, Surface, WindowBuilder } from "../../mod.ts";
-import { drawMap, Sprite } from "./util.ts";
+import { drawMap, sleepSync, Sprite } from "./util.ts";
 
 const canvasSize = { width: 400, height: 400 };
 const window = new WindowBuilder(
@@ -115,7 +115,7 @@ function frame() {
   }
 
   canv.present();
-  Deno.sleepSync(10);
+  sleepSync(10);
 }
 
 for (const event of window.events()) {
diff --git a/examples/sprite/util.ts b/examples/sprite/util.ts
index 7a9bbf6..33cc44d 100644
--- a/examples/sprite/util.ts
+++ b/examples/sprite/util.ts
@@ -1,5 +1,11 @@
 import { Canvas, Rect, Texture } from "../../mod.ts";
 
+export function sleepSync(timeout: number) {
+  const sab = new SharedArrayBuffer(1024);
+  const int32 = new Int32Array(sab);
+  Atomics.wait(int32, 0, 0, timeout);
+}
+
 export interface Area {
   x: number;
   y: number;
diff --git a/mod.ts b/mod.ts
index d63430d..5e2bf09 100644
--- a/mod.ts
+++ b/mod.ts
@@ -61,7 +61,7 @@ const sdl2 = Deno.dlopen(getLibraryPath("SDL2"), {
   },
   "SDL_CreateWindow": {
     "parameters": [
-      "pointer",
+      "buffer",
       "i32",
       "i32",
       "i32",
@@ -248,7 +248,7 @@ const sdl2Image = Deno.dlopen(getLibraryPath("SDL2_image"), {
     "result": "u32",
   },
   "IMG_Load": {
-    "parameters": ["pointer"],
+    "parameters": ["buffer"],
     "result": "pointer",
   },
 });
@@ -259,11 +259,11 @@ const sdl2Font = Deno.dlopen(getLibraryPath("SDL2_ttf"), {
     "result": "u32",
   },
   "TTF_OpenFont": {
-    "parameters": ["pointer", "i32"],
+    "parameters": ["buffer", "i32"],
     "result": "pointer",
   },
   "TTF_RenderText_Solid": {
-    "parameters": ["pointer", "pointer", "pointer"],
+    "parameters": ["pointer", "buffer", "pointer"],
     "result": "pointer",
   },
   "TTF_RenderText_Shaded": {
@@ -407,8 +407,8 @@ function asCString(str: string): Uint8Array {
 
 function throwSDLError(): never {
   const error = sdl2.symbols.SDL_GetError();
-  const view = new Deno.UnsafePointerView(error);
-  throw new Error(`SDL Error: ${view.getCString()}`);
+  const view = Deno.UnsafePointerView.getCString(error);
+  throw new Error(`SDL Error: ${view}`);
 }
 
 export class Canvas {
@@ -523,8 +523,8 @@ export class Canvas {
     const ret = sdl2.symbols.SDL_RenderCopy(
       this.target,
       texture[_raw],
-      source ? source[_raw] : null,
-      dest ? dest[_raw] : null,
+      source ? Deno.UnsafePointer.of(source[_raw]) : null,
+      dest ? Deno.UnsafePointer.of(dest[_raw]) : null,
     );
     if (ret < 0) {
       throwSDLError();