implement PPTY

www/js/smc/lib.js

@@ -1,4 +1,14 @@
 import { Smc } from "./smc.js";
 import { SmcErr } from "./errors.js";
 
-export { Smc, SmcErr };
+export { Smc, SmcErr, fetchShader };
+
+async function fetchShader(uri, delegate) {
+  const res = await fetch(uri);
+  if (res.ok)
+    return await res.text();
+  this.raiseError(
+    SmcErr.FETCH_SHADER,
+    `Failed to load shader source ${url}: ${res.status} ${res.json()}`);
+  return ""
+}

www/js/smc/smc.js

@@ -164,10 +164,11 @@ class Smc {
     var delta = time - this.#prevTimeMs;
     this.render(time, delta);
 
-    setTimeout(
-      () => requestAnimationFrame(this.renderLoop),
-      Math.max(0, delta - this.#minDeltaTimeMs)
-    );
+    requestAnimationFrame(this.renderLoop);
+    // setTimeout(
+    //   () => requestAnimationFrame(this.renderLoop),
+    //   Math.max(0, delta - this.#minDeltaTimeMs)
+    // );
     this.#prevTimeMs = time;
   }