1 files changed, 11 insertions, 5 deletions
diff --git a/op_crates/webgpu/shader.rs b/op_crates/webgpu/shader.rs
index 8a0613862..63578ce64 100644
--- a/op_crates/webgpu/shader.rs
+++ b/op_crates/webgpu/shader.rs
@@ -1,6 +1,7 @@
 // Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
 
 use deno_core::error::bad_resource_id;
+use deno_core::error::null_opbuf;
 use deno_core::error::AnyError;
 use deno_core::serde_json::json;
 use deno_core::serde_json::Value;
@@ -31,7 +32,7 @@ pub struct CreateShaderModuleArgs {
 pub fn op_webgpu_create_shader_module(
   state: &mut OpState,
   args: CreateShaderModuleArgs,
-  zero_copy: &mut [ZeroCopyBuf],
+  zero_copy: Option<ZeroCopyBuf>,
 ) -> Result<Value, AnyError> {
   let instance = state.borrow::<super::Instance>();
   let device_resource = state
@@ -45,10 +46,15 @@ pub fn op_webgpu_create_shader_module(
       wgpu_core::pipeline::ShaderModuleSource::Wgsl(Cow::from(code))
     }
     None => wgpu_core::pipeline::ShaderModuleSource::SpirV(Cow::from(unsafe {
-      let (prefix, data, suffix) = zero_copy[0].align_to::<u32>();
-      assert!(prefix.is_empty());
-      assert!(suffix.is_empty());
-      data
+      match &zero_copy {
+        Some(zero_copy) => {
+          let (prefix, data, suffix) = zero_copy.align_to::<u32>();
+          assert!(prefix.is_empty());
+          assert!(suffix.is_empty());
+          data
+        }
+        None => return Err(null_opbuf()),
+      }
     })),
   };