1 files changed, 10 insertions, 7 deletions
diff --git a/ext/webgpu/01_webgpu.js b/ext/webgpu/01_webgpu.js
index 3e8e3161e..a310eac2f 100644
--- a/ext/webgpu/01_webgpu.js
+++ b/ext/webgpu/01_webgpu.js
@@ -618,11 +618,12 @@ function createGPUSupportedFeatures(features) {
   /** @type {GPUSupportedFeatures} */
   const supportedFeatures = webidl.createBranded(GPUSupportedFeatures);
   supportedFeatures[webidl.setlikeInner] = new Set(features);
-  return webidl.setlike(
+  webidl.setlike(
     supportedFeatures,
     GPUSupportedFeaturesPrototype,
     true,
   );
+  return supportedFeatures;
 }
 
 class GPUSupportedFeatures {
@@ -4903,14 +4904,14 @@ class GPURenderBundleEncoder {
    * @param {number} offset
    * @param {number} size
    */
-  setVertexBuffer(slot, buffer, offset = 0, size = 0) {
+  setVertexBuffer(slot, buffer, offset = 0, size) {
     webidl.assertBranded(this, GPURenderBundleEncoderPrototype);
     const prefix =
       "Failed to execute 'setVertexBuffer' on 'GPURenderBundleEncoder'";
     webidl.requiredArguments(arguments.length, 2, { prefix });
     slot = webidl.converters.GPUSize32(slot, {
       prefix,
-      context: "Argument 2",
+      context: "Argument 1",
     });
     buffer = webidl.converters.GPUBuffer(buffer, {
       prefix,
@@ -4920,10 +4921,12 @@ class GPURenderBundleEncoder {
       prefix,
       context: "Argument 3",
     });
-    size = webidl.converters.GPUSize64(size, {
-      prefix,
-      context: "Argument 4",
-    });
+    if (size !== undefined) {
+      size = webidl.converters.GPUSize64(size, {
+        prefix,
+        context: "Argument 4",
+      });
+    }
     const device = assertDevice(this, { prefix, context: "this" });
     const renderBundleEncoderRid = assertResource(this, {
       prefix,