diff --git a/deno_webgpu/01_webgpu.js b/deno_webgpu/01_webgpu.js
index 8276c1681..9dcb2dcc9 100644
--- a/deno_webgpu/01_webgpu.js
+++ b/deno_webgpu/01_webgpu.js
@@ -3061,6 +3061,49 @@
       device.pushError(err);
     }
 
+    /**
+     * @param {GPUBuffer} destination
+     * @param {GPUSize64} destinationOffset
+     * @param {GPUSize64} size
+     */
+    fillBuffer(destination, destinationOffset, size) {
+      webidl.assertBranded(this, GPUCommandEncoder);
+      const prefix =
+        "Failed to execute 'fillBuffer' on 'GPUCommandEncoder'";
+      webidl.requiredArguments(arguments.length, 3, { prefix });
+      destination = webidl.converters.GPUBuffer(destination, {
+        prefix,
+        context: "Argument 1",
+      });
+      destinationOffset = webidl.converters.GPUSize64(destinationOffset, {
+        prefix,
+        context: "Argument 2",
+      });
+      size = webidl.converters.GPUSize64(size, {
+        prefix,
+        context: "Argument 3",
+      });
+      const device = assertDevice(this, { prefix, context: "this" });
+      const commandEncoderRid = assertResource(this, {
+        prefix,
+        context: "this",
+      });
+      const destinationRid = assertResource(destination, {
+        prefix,
+        context: "Argument 1",
+      });
+      const { err } = core.opSync(
+        "op_webgpu_command_encoder_fill_buffer",
+        {
+          commandEncoderRid,
+          destinationRid,
+          destinationOffset,
+          size,
+        },
+      );
+      device.pushError(err);
+    }
+
     /**
      * @param {string} groupLabel
      */
@@ -3204,7 +3247,7 @@
         prefix,
         context: "Argument 3",
       });
-      destination = webidl.converters.GPUQuerySet(destination, {
+      destination = webidl.converters.GPUBuffer(destination, {
         prefix,
         context: "Argument 4",
       });
diff --git a/deno_webgpu/02_idl_types.js b/deno_webgpu/02_idl_types.js
index e1fc700bd..0dcf84903 100644
--- a/deno_webgpu/02_idl_types.js
+++ b/deno_webgpu/02_idl_types.js
@@ -1176,7 +1176,7 @@
       defaultValue: "none",
     },
     {
-      key: "clampDepth",
+      key: "unclippedDepth",
       converter: webidl.converters["boolean"],
       defaultValue: false,
     },
diff --git a/deno_webgpu/src/command_encoder.rs b/deno_webgpu/src/command_encoder.rs
index bc3310a8b..466efe6ea 100644
--- a/deno_webgpu/src/command_encoder.rs
+++ b/deno_webgpu/src/command_encoder.rs
@@ -429,6 +429,37 @@ pub fn op_webgpu_command_encoder_copy_texture_to_texture(
     ))
 }
 
+#[derive(Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct CommandEncoderFillBufferArgs {
+    command_encoder_rid: u32,
+    destination_rid: u32,
+    destination_offset: u64,
+    size: u64,
+}
+
+pub fn op_webgpu_command_encoder_fill_buffer(
+    state: &mut OpState,
+    args: CommandEncoderFillBufferArgs,
+    _: (),
+) -> Result<WebGpuResult, AnyError> {
+    let instance = state.borrow::<super::Instance>();
+    let command_encoder_resource = state
+        .resource_table
+        .get::<WebGpuCommandEncoder>(args.command_encoder_rid)?;
+    let command_encoder = command_encoder_resource.0;
+    let destination_resource = state
+        .resource_table
+        .get::<super::buffer::WebGpuBuffer>(args.destination_rid)?;
+
+    gfx_ok!(command_encoder => instance.command_encoder_fill_buffer(
+      command_encoder,
+      destination_resource.0,
+      args.destination_offset,
+      std::num::NonZeroU64::new(args.size)
+    ))
+}
+
 #[derive(Deserialize)]
 #[serde(rename_all = "camelCase")]
 pub struct CommandEncoderPushDebugGroupArgs {
diff --git a/deno_webgpu/src/error.rs b/deno_webgpu/src/error.rs
index 9d19b4331..26d7f7b24 100644
--- a/deno_webgpu/src/error.rs
+++ b/deno_webgpu/src/error.rs
@@ -8,6 +8,7 @@ use wgpu_core::binding_model::CreateBindGroupError;
 use wgpu_core::binding_model::CreateBindGroupLayoutError;
 use wgpu_core::binding_model::CreatePipelineLayoutError;
 use wgpu_core::binding_model::GetBindGroupLayoutError;
+use wgpu_core::command::ClearError;
 use wgpu_core::command::CommandEncoderError;
 use wgpu_core::command::ComputePassError;
 use wgpu_core::command::CopyError;
@@ -255,6 +256,12 @@ impl From<QueueWriteError> for WebGpuError {
     }
 }
 
+impl From<ClearError> for WebGpuError {
+    fn from(err: ClearError) -> Self {
+        WebGpuError::Validation(err.to_string())
+    }
+}
+
 #[derive(Debug)]
 pub struct DomExceptionOperationError {
     pub msg: String,
diff --git a/deno_webgpu/src/lib.rs b/deno_webgpu/src/lib.rs
index 7fb54ff90..c601e6e4c 100644
--- a/deno_webgpu/src/lib.rs
+++ b/deno_webgpu/src/lib.rs
@@ -246,7 +246,11 @@ pub async fn op_webgpu_request_adapter(
 ) -> Result<GpuAdapterDeviceOrErr, AnyError> {
     let mut state = state.borrow_mut();
     check_unstable(&state, "navigator.gpu.requestAdapter");
-    let backends = std::env::var("DENO_WEBGPU_BACKEND").ok().map_or_else(wgpu_types::Backends::all, |s| wgpu_core::instance::parse_backends_from_comma_list(&s));
+    let backends = std::env::var("DENO_WEBGPU_BACKEND")
+        .ok()
+        .map_or_else(wgpu_types::Backends::all, |s| {
+            wgpu_core::instance::parse_backends_from_comma_list(&s)
+        });
     let instance = if let Some(instance) = state.try_borrow::<Instance>() {
         instance
     } else {
@@ -268,9 +272,7 @@ pub async fn op_webgpu_request_adapter(
     };
     let res = instance.request_adapter(
         &descriptor,
-        wgpu_core::instance::AdapterInputs::Mask(backends, |_| {
-            std::marker::PhantomData
-        }),
+        wgpu_core::instance::AdapterInputs::Mask(backends, |_| std::marker::PhantomData),
     );
 
     let adapter = match res {
@@ -312,51 +314,120 @@ pub struct GpuRequiredFeatures(HashSet<String>);
 impl From<GpuRequiredFeatures> for wgpu_types::Features {
     fn from(required_features: GpuRequiredFeatures) -> wgpu_types::Features {
         let mut features: wgpu_types::Features = wgpu_types::Features::empty();
-            features.set(wgpu_types::Features::DEPTH_CLIP_CONTROL, required_features.0.contains("depth-clip-control"));
-            features.set(wgpu_types::Features::PIPELINE_STATISTICS_QUERY, required_features.0.contains("pipeline-statistics-query"));
-            features.set(wgpu_types::Features::TEXTURE_COMPRESSION_BC, required_features.0.contains("texture-compression-bc"));
-            features.set(wgpu_types::Features::TEXTURE_COMPRESSION_ETC2, required_features.0.contains("texture-compression-etc2"));
-            features.set(wgpu_types::Features::TEXTURE_COMPRESSION_ASTC_LDR, required_features.0.contains("texture-compression-astc"));
-            features.set(wgpu_types::Features::TIMESTAMP_QUERY, required_features.0.contains("timestamp-query"));
-            features.set(wgpu_types::Features::INDIRECT_FIRST_INSTANCE, required_features.0.contains("indirect-first-instance"));
+        features.set(
+            wgpu_types::Features::DEPTH_CLIP_CONTROL,
+            required_features.0.contains("depth-clip-control"),
+        );
+        features.set(
+            wgpu_types::Features::PIPELINE_STATISTICS_QUERY,
+            required_features.0.contains("pipeline-statistics-query"),
+        );
+        features.set(
+            wgpu_types::Features::TEXTURE_COMPRESSION_BC,
+            required_features.0.contains("texture-compression-bc"),
+        );
+        features.set(
+            wgpu_types::Features::TEXTURE_COMPRESSION_ETC2,
+            required_features.0.contains("texture-compression-etc2"),
+        );
+        features.set(
+            wgpu_types::Features::TEXTURE_COMPRESSION_ASTC_LDR,
+            required_features.0.contains("texture-compression-astc"),
+        );
+        features.set(
+            wgpu_types::Features::TIMESTAMP_QUERY,
+            required_features.0.contains("timestamp-query"),
+        );
+        features.set(
+            wgpu_types::Features::INDIRECT_FIRST_INSTANCE,
+            required_features.0.contains("indirect-first-instance"),
+        );
 
         // extended from spec
-            features.set(wgpu_types::Features::MAPPABLE_PRIMARY_BUFFERS, required_features.0.contains("mappable-primary-buffers"));
-            features.set(wgpu_types::Features::TEXTURE_BINDING_ARRAY, required_features.0.contains("texture-binding-array"));
-            features.set(wgpu_types::Features::BUFFER_BINDING_ARRAY, required_features.0.contains("buffer-binding-array"));
-            features.set(wgpu_types::Features::STORAGE_RESOURCE_BINDING_ARRAY, required_features
-            .0
-            .contains("storage-resource-binding-array"));
-            features.set(
-                wgpu_types::Features::SAMPLED_TEXTURE_AND_STORAGE_BUFFER_ARRAY_NON_UNIFORM_INDEXING,
-                required_features
-            .0
-            .contains("sampled-texture-and-storage-buffer-array-non-uniform-indexing"),
-            );
-            features.set(
-                wgpu_types::Features::UNIFORM_BUFFER_AND_STORAGE_TEXTURE_ARRAY_NON_UNIFORM_INDEXING,
-                required_features
-            .0
-            .contains("uniform-buffer-and-storage-buffer-texture-non-uniform-indexing"),
-            );
-            features.set(wgpu_types::Features::UNSIZED_BINDING_ARRAY, required_features.0.contains("unsized-binding-array"));
-            features.set(wgpu_types::Features::MULTI_DRAW_INDIRECT, required_features.0.contains("multi-draw-indirect"));
-            features.set(wgpu_types::Features::MULTI_DRAW_INDIRECT_COUNT, required_features.0.contains("multi-draw-indirect-count"));
-            features.set(wgpu_types::Features::PUSH_CONSTANTS, required_features.0.contains("push-constants"));
-            features.set(wgpu_types::Features::ADDRESS_MODE_CLAMP_TO_BORDER, required_features.0.contains("address-mode-clamp-to-border"));
-            features.set(
-                wgpu_types::Features::TEXTURE_ADAPTER_SPECIFIC_FORMAT_FEATURES,
-                required_features
-            .0
-            .contains("texture-adapter-specific-format-features"),
-            );
-        features.set(wgpu_types::Features::SHADER_FLOAT64, required_features.0.contains("shader-float64"));
-        features.set(wgpu_types::Features::VERTEX_ATTRIBUTE_64BIT, required_features.0.contains("vertex-attribute-64bit"));
-        features.set(wgpu_types::Features::CONSERVATIVE_RASTERIZATION, required_features.0.contains("conservative-rasterization"));
-        features.set(wgpu_types::Features::VERTEX_WRITABLE_STORAGE, required_features.0.contains("vertex-writable-storage"));
-        features.set(wgpu_types::Features::CLEAR_COMMANDS, required_features.0.contains("clear-commands"));
-        features.set(wgpu_types::Features::SPIRV_SHADER_PASSTHROUGH, required_features.0.contains("spirv-shader-passthrough"));
-        features.set(wgpu_types::Features::SHADER_PRIMITIVE_INDEX, required_features.0.contains("shader-primitive-index"));
+        features.set(
+            wgpu_types::Features::MAPPABLE_PRIMARY_BUFFERS,
+            required_features.0.contains("mappable-primary-buffers"),
+        );
+        features.set(
+            wgpu_types::Features::TEXTURE_BINDING_ARRAY,
+            required_features.0.contains("texture-binding-array"),
+        );
+        features.set(
+            wgpu_types::Features::BUFFER_BINDING_ARRAY,
+            required_features.0.contains("buffer-binding-array"),
+        );
+        features.set(
+            wgpu_types::Features::STORAGE_RESOURCE_BINDING_ARRAY,
+            required_features
+                .0
+                .contains("storage-resource-binding-array"),
+        );
+        features.set(
+            wgpu_types::Features::SAMPLED_TEXTURE_AND_STORAGE_BUFFER_ARRAY_NON_UNIFORM_INDEXING,
+            required_features
+                .0
+                .contains("sampled-texture-and-storage-buffer-array-non-uniform-indexing"),
+        );
+        features.set(
+            wgpu_types::Features::UNIFORM_BUFFER_AND_STORAGE_TEXTURE_ARRAY_NON_UNIFORM_INDEXING,
+            required_features
+                .0
+                .contains("uniform-buffer-and-storage-buffer-texture-non-uniform-indexing"),
+        );
+        features.set(
+            wgpu_types::Features::UNSIZED_BINDING_ARRAY,
+            required_features.0.contains("unsized-binding-array"),
+        );
+        features.set(
+            wgpu_types::Features::MULTI_DRAW_INDIRECT,
+            required_features.0.contains("multi-draw-indirect"),
+        );
+        features.set(
+            wgpu_types::Features::MULTI_DRAW_INDIRECT_COUNT,
+            required_features.0.contains("multi-draw-indirect-count"),
+        );
+        features.set(
+            wgpu_types::Features::PUSH_CONSTANTS,
+            required_features.0.contains("push-constants"),
+        );
+        features.set(
+            wgpu_types::Features::ADDRESS_MODE_CLAMP_TO_BORDER,
+            required_features.0.contains("address-mode-clamp-to-border"),
+        );
+        features.set(
+            wgpu_types::Features::TEXTURE_ADAPTER_SPECIFIC_FORMAT_FEATURES,
+            required_features
+                .0
+                .contains("texture-adapter-specific-format-features"),
+        );
+        features.set(
+            wgpu_types::Features::SHADER_FLOAT64,
+            required_features.0.contains("shader-float64"),
+        );
+        features.set(
+            wgpu_types::Features::VERTEX_ATTRIBUTE_64BIT,
+            required_features.0.contains("vertex-attribute-64bit"),
+        );
+        features.set(
+            wgpu_types::Features::CONSERVATIVE_RASTERIZATION,
+            required_features.0.contains("conservative-rasterization"),
+        );
+        features.set(
+            wgpu_types::Features::VERTEX_WRITABLE_STORAGE,
+            required_features.0.contains("vertex-writable-storage"),
+        );
+        features.set(
+            wgpu_types::Features::CLEAR_COMMANDS,
+            required_features.0.contains("clear-commands"),
+        );
+        features.set(
+            wgpu_types::Features::SPIRV_SHADER_PASSTHROUGH,
+            required_features.0.contains("spirv-shader-passthrough"),
+        );
+        features.set(
+            wgpu_types::Features::SHADER_PRIMITIVE_INDEX,
+            required_features.0.contains("shader-primitive-index"),
+        );
 
         features
     }
@@ -592,6 +663,10 @@ fn declare_webgpu_ops() -> Vec<(&'static str, Box<OpFn>)> {
             "op_webgpu_command_encoder_copy_texture_to_texture",
             op_sync(command_encoder::op_webgpu_command_encoder_copy_texture_to_texture),
         ),
+        (
+            "op_webgpu_command_encoder_fill_buffer",
+            op_sync(command_encoder::op_webgpu_command_encoder_fill_buffer),
+        ),
         (
             "op_webgpu_command_encoder_push_debug_group",
             op_sync(command_encoder::op_webgpu_command_encoder_push_debug_group),
@@ -712,15 +787,11 @@ fn declare_webgpu_ops() -> Vec<(&'static str, Box<OpFn>)> {
         ),
         (
             "op_webgpu_compute_pass_begin_pipeline_statistics_query",
-            op_sync(
-                compute_pass::op_webgpu_compute_pass_begin_pipeline_statistics_query,
-            ),
+            op_sync(compute_pass::op_webgpu_compute_pass_begin_pipeline_statistics_query),
         ),
         (
             "op_webgpu_compute_pass_end_pipeline_statistics_query",
-            op_sync(
-                compute_pass::op_webgpu_compute_pass_end_pipeline_statistics_query,
-            ),
+            op_sync(compute_pass::op_webgpu_compute_pass_end_pipeline_statistics_query),
         ),
         (
             "op_webgpu_compute_pass_write_timestamp",
diff --git a/deno_webgpu/webgpu.idl b/deno_webgpu/webgpu.idl
index 97fa77586..5567f97b9 100644
--- a/deno_webgpu/webgpu.idl
+++ b/deno_webgpu/webgpu.idl
@@ -82,7 +82,7 @@ dictionary GPUDeviceDescriptor : GPUObjectDescriptorBase {
 };
 
 enum GPUFeatureName {
-    "depth-clamping",
+    "depth-clip-control",
     "depth24unorm-stencil8",
     "depth32float-stencil8",
     "pipeline-statistics-query",
@@ -90,6 +90,7 @@ enum GPUFeatureName {
     "texture-compression-etc2",
     "texture-compression-astc",
     "timestamp-query",
+    "indirect-first-instance",
 };
 
 [Exposed=(Window, DedicatedWorker), SecureContext]
@@ -577,8 +578,8 @@ dictionary GPUPrimitiveState {
     GPUFrontFace frontFace = "ccw";
     GPUCullMode cullMode = "none";
 
-    // Enable depth clamping (requires "depth-clamping" feature)
-    boolean clampDepth = false;
+    // Requires "depth-clip-control" feature.
+    boolean unclippedDepth = false;
 };
 
 enum GPUFrontFace {
@@ -784,6 +785,11 @@ interface GPUCommandEncoder {
         GPUImageCopyTexture destination,
         GPUExtent3D copySize);
 
+    undefined fillBuffer(
+        GPUBuffer destination,
+        GPUSize64 destinationOffset,
+        GPUSize64 size);
+
     undefined pushDebugGroup(USVString groupLabel);
     undefined popDebugGroup();
     undefined insertDebugMarker(USVString markerLabel);
diff --git a/wgpu-core/src/command/mod.rs b/wgpu-core/src/command/mod.rs
index d12d2af54..7c36a3301 100644
--- a/wgpu-core/src/command/mod.rs
+++ b/wgpu-core/src/command/mod.rs
@@ -10,6 +10,7 @@ mod transfer;
 
 pub use self::bundle::*;
 pub(crate) use self::clear::collect_zero_buffer_copies_for_clear_texture;
+pub use self::clear::ClearError;
 pub use self::compute::*;
 pub use self::draw::*;
 use self::memory_init::CommandBufferTextureMemoryActions;