diff --git a/webgpu/generate/webgpu-spec b/webgpu/generate/webgpu-spec
index 21f95d5..532ffc2 160000
--- a/webgpu/generate/webgpu-spec
+++ b/webgpu/generate/webgpu-spec
@@ -1 +1 @@
-Subproject commit 21f95d56ced1f3887d7beb41c23d609926af60a9
+Subproject commit 532ffc26b181e6c67c76a28172905ea74b591069
diff --git a/webgpu/generate/webgpu-transforms.json b/webgpu/generate/webgpu-transforms.json
index 41a4b35..57bbb02 100644
--- a/webgpu/generate/webgpu-transforms.json
+++ b/webgpu/generate/webgpu-transforms.json
@@ -221,7 +221,7 @@
             {
                 "operation": {
                     "remove-variant-case": {
-                        "variant": "gpu-buffer-binding-or-gpu-external-texture-or-gpu-sampler-or-gpu-texture-view",
+                        "variant": "gpu-buffer-or-gpu-buffer-binding-or-gpu-external-texture-or-gpu-sampler-or-gpu-texture-or-gpu-texture-view",
                         "case": "gpu-external-texture"
                     }
                 }
@@ -229,8 +229,8 @@
             {
                 "operation": {
                     "rename-type": {
-                        "from": "gpu-buffer-binding-or-gpu-external-texture-or-gpu-sampler-or-gpu-texture-view",
-                        "to": "gpu-buffer-binding-or-gpu-sampler-or-gpu-texture-view"
+                        "from": "gpu-buffer-or-gpu-buffer-binding-or-gpu-external-texture-or-gpu-sampler-or-gpu-texture-or-gpu-texture-view",
+                        "to": "gpu-buffer-or-gpu-buffer-binding-or-gpu-sampler-or-gpu-texture-or-gpu-texture-view"
                     }
                 }
             },
@@ -238,10 +238,10 @@
                 "operation": {
                     "replace-type-usages": {
                         "old": {
-                            "named": "gpu-buffer-binding-or-gpu-external-texture-or-gpu-sampler-or-gpu-texture-view"
+                            "named": "gpu-buffer-or-gpu-buffer-binding-or-gpu-external-texture-or-gpu-sampler-or-gpu-texture-or-gpu-texture-view"
                         },
                         "new": {
-                            "named": "gpu-buffer-binding-or-gpu-sampler-or-gpu-texture-view"
+                            "named": "gpu-buffer-or-gpu-buffer-binding-or-gpu-sampler-or-gpu-texture-or-gpu-texture-view"
                         }
                     }
                 }
@@ -525,6 +525,90 @@
             }
         ]
     },
+    {
+        "reason": "Beautify gpu-command-encoder.copy-buffer-to-buffer, no tuple params. Using the more powerful variant with offsets and making the offsets optional",
+        "operations": [
+            {
+                "vars": {
+                    "$_SOURCE": {
+                        "find-type": {
+                            "variant-case": {
+                                "variant": "gpu-command-encoder-copy-buffer-to-buffer-params",
+                                "case": "source-source-offset-destination-destination-offset-size"
+                            },
+                            "unwrap-t": [
+                                { "tuple": 0 }
+                            ]
+                        }
+                    },
+                    "$_SOURCE_OFFSET": {
+                        "find-type": {
+                            "variant-case": {
+                                "variant": "gpu-command-encoder-copy-buffer-to-buffer-params",
+                                "case": "source-source-offset-destination-destination-offset-size"
+                            },
+                            "unwrap-t": [
+                                { "tuple": 1 }
+                            ]
+                        }
+                    },
+                    "$_DESTINATION": {
+                        "find-type": {
+                            "variant-case": {
+                                "variant": "gpu-command-encoder-copy-buffer-to-buffer-params",
+                                "case": "source-source-offset-destination-destination-offset-size"
+                            },
+                            "unwrap-t": [
+                                { "tuple": 2 }
+                            ]
+                        }
+                    },
+                    "$_DESTINATION_OFFSET": {
+                        "find-type": {
+                            "variant-case": {
+                                "variant": "gpu-command-encoder-copy-buffer-to-buffer-params",
+                                "case": "source-source-offset-destination-destination-offset-size"
+                            },
+                            "unwrap-t": [
+                                { "tuple": 3 }
+                            ]
+                        }
+                    },
+                    "$_SIZE": {
+                        "find-type": {
+                            "variant-case": {
+                                "variant": "gpu-command-encoder-copy-buffer-to-buffer-params",
+                                "case": "source-source-offset-destination-destination-offset-size"
+                            },
+                            "unwrap-t": [
+                                { "tuple": 4 }
+                            ]
+                        }
+                    }
+                },
+                "operation": {
+                    "retype-func-params": {
+                        "resource": "gpu-command-encoder",
+                        "func": "copy-buffer-to-buffer",
+                        "new-params": {
+                            "items": [
+                                ["source", "$_SOURCE"],
+                                ["source-offset", { "option": "$_SOURCE_OFFSET" }],
+                                ["destination", "$_DESTINATION"],
+                                ["destination-offset", { "option": "$_DESTINATION_OFFSET" }],
+                                ["size", "$_SIZE"]
+                            ]
+                        }
+                    }
+                }
+            },
+            {
+                "operation": {
+                    "remove-type": "gpu-command-encoder-copy-buffer-to-buffer-params"
+                }
+            }
+        ]
+    },
     {
         "reason": "Remove allow-shared-buffer-source as it's web related and temporarily replace it with list<u8>",
         "operations": [
@@ -830,7 +914,7 @@
             {
                 "operation": {
                     "rename-type": {
-                        "from" : "gpu-buffer-binding-or-gpu-sampler-or-gpu-texture-view",
+                        "from" : "gpu-buffer-or-gpu-buffer-binding-or-gpu-sampler-or-gpu-texture-or-gpu-texture-view",
                         "to" : "gpu-binding-resource"
                     }
                 }
@@ -1037,6 +1121,36 @@
             }
         ]
     },
+    {
+        "reason": "Accepting a texture in place of a texture view is just shorthand for texture.createView() (https://www.w3.org/TR/webgpu/#abstract-opdef-get-as-texture-view), so it's unnecessary — callers can call create-view themselves. JS can hide this behind dynamic typing, but in WIT it would require a variant and complicate the API. webgpu.h also disallows it (https://github.com/gpuweb/gpuweb/pull/5228#issuecomment-3046161091).",
+        "operations": [
+            {
+                "vars": {
+                    "$_VIEW": {
+                        "find-type": {
+                            "variant-case": {
+                                "variant": "gpu-texture-or-gpu-texture-view",
+                                "case": "gpu-texture-view"
+                            }
+                        }
+                    }
+                },
+                "operation": {
+                    "replace-type-usages": {
+                        "old": {
+                            "named": "gpu-texture-or-gpu-texture-view"
+                        },
+                        "new": "$_VIEW"
+                    }
+                }
+            },
+            {
+                "operation": {
+                    "remove-type": "gpu-texture-or-gpu-texture-view"
+                }
+            }
+        ]
+    },
     {
         "reason": "Errors have the message field raised to the top level type so that they don't have to be taken out of the inner error. Important if we allow new error types in the future that the developer has not yet handled. They also get a `kind` to enable detecting the error type. `kind` is a variant and not an enum so that they can have fields inside like `pipeline-error.reason`. Note: not changing gpu-error to a record even though errors added by us are records, because GPUError is an interface in the spec, and might one day gain interface like properties",
         "operations": [
diff --git a/webgpu/webgpu.wit b/webgpu/webgpu.wit
index e8a03c8..e6773e2 100644
--- a/webgpu/webgpu.wit
+++ b/webgpu/webgpu.wit
@@ -34,7 +34,6 @@ interface webgpu {
     features: func() -> gpu-supported-features;
     limits: func() -> gpu-supported-limits;
     info: func() -> gpu-adapter-info;
-    is-fallback-adapter: func() -> bool;
     request-device: func(descriptor: option<gpu-device-descriptor>) -> future<result<gpu-device, request-device-error>>;
   }
   resource gpu-adapter-info {
@@ -44,6 +43,7 @@ interface webgpu {
     description: func() -> string;
     subgroup-min-size: func() -> u32;
     subgroup-max-size: func() -> u32;
+    is-fallback-adapter: func() -> bool;
   }
   enum gpu-address-mode {
     clamp-to-edge,
@@ -80,8 +80,10 @@ interface webgpu {
     storage-texture: option<gpu-storage-texture-binding-layout>,
   }
   variant gpu-binding-resource {
+    gpu-buffer(borrow<gpu-buffer>),
     gpu-buffer-binding(gpu-buffer-binding),
     gpu-sampler(borrow<gpu-sampler>),
+    gpu-texture(borrow<gpu-texture>),
     gpu-texture-view(borrow<gpu-texture-view>),
   }
   record gpu-blend-component {
@@ -235,7 +237,7 @@ interface webgpu {
   resource gpu-command-encoder {
     begin-render-pass: func(descriptor: gpu-render-pass-descriptor) -> gpu-render-pass-encoder;
     begin-compute-pass: func(descriptor: option<gpu-compute-pass-descriptor>) -> gpu-compute-pass-encoder;
-    copy-buffer-to-buffer: func(source: borrow<gpu-buffer>, source-offset: gpu-size64, destination: borrow<gpu-buffer>, destination-offset: gpu-size64, size: gpu-size64);
+    copy-buffer-to-buffer: func(source: borrow<gpu-buffer>, source-offset: option<gpu-size64>, destination: borrow<gpu-buffer>, destination-offset: option<gpu-size64>, size: option<gpu-size64>);
     copy-buffer-to-texture: func(source: gpu-texel-copy-buffer-info, destination: gpu-texel-copy-texture-info, copy-size: gpu-extent3-d);
     copy-texture-to-buffer: func(source: gpu-texel-copy-texture-info, destination: gpu-texel-copy-buffer-info, copy-size: gpu-extent3-d);
     copy-texture-to-texture: func(source: gpu-texel-copy-texture-info, destination: gpu-texel-copy-texture-info, copy-size: gpu-extent3-d);
@@ -292,6 +294,7 @@ interface webgpu {
     pop-debug-group: func();
     insert-debug-marker: func(marker-label: string);
     set-bind-group: func(index: gpu-index32, bind-group: option<borrow<gpu-bind-group>>, dynamic-offsets-data: option<list<gpu-buffer-dynamic-offset>>, dynamic-offsets-data-start: option<gpu-size64>, dynamic-offsets-data-length: option<gpu-size32>) -> result<_, set-bind-group-error>;
+    set-immediates: func(range-offset: gpu-size32, data: list<u8>, data-offset: option<gpu-size64>, data-size: option<gpu-size64>);
   }
   record gpu-compute-pass-timestamp-writes {
     query-set: borrow<gpu-query-set>,
@@ -388,6 +391,7 @@ interface webgpu {
     depth-or-array-layers: option<gpu-integer-coordinate>,
   }
   enum gpu-feature-name {
+    core-features-and-limits,
     depth-clip-control,
     depth32float-stencil8,
     texture-compression-bc,
@@ -405,6 +409,10 @@ interface webgpu {
     clip-distances,
     dual-source-blending,
     subgroups,
+    texture-formats-tier1,
+    texture-formats-tier2,
+    primitive-index,
+    texture-component-swizzle,
   }
   enum gpu-filter-mode {
     nearest,
@@ -466,6 +474,7 @@ interface webgpu {
   }
   record gpu-pipeline-layout-descriptor {
     bind-group-layouts: list<option<borrow<gpu-bind-group-layout>>>,
+    immediate-size: option<gpu-size32>,
     label: option<string>,
   }
   enum gpu-power-preference {
@@ -533,6 +542,7 @@ interface webgpu {
     pop-debug-group: func();
     insert-debug-marker: func(marker-label: string);
     set-bind-group: func(index: gpu-index32, bind-group: option<borrow<gpu-bind-group>>, dynamic-offsets-data: option<list<gpu-buffer-dynamic-offset>>, dynamic-offsets-data-start: option<gpu-size64>, dynamic-offsets-data-length: option<gpu-size32>) -> result<_, set-bind-group-error>;
+    set-immediates: func(range-offset: gpu-size32, data: list<u8>, data-offset: option<gpu-size64>, data-size: option<gpu-size64>);
     set-pipeline: func(pipeline: borrow<gpu-render-pipeline>);
     set-index-buffer: func(buffer: borrow<gpu-buffer>, index-format: gpu-index-format, offset: option<gpu-size64>, size: option<gpu-size64>);
     set-vertex-buffer: func(slot: gpu-index32, buffer: option<borrow<gpu-buffer>>, offset: option<gpu-size64>, size: option<gpu-size64>);
@@ -591,6 +601,7 @@ interface webgpu {
     pop-debug-group: func();
     insert-debug-marker: func(marker-label: string);
     set-bind-group: func(index: gpu-index32, bind-group: option<borrow<gpu-bind-group>>, dynamic-offsets-data: option<list<gpu-buffer-dynamic-offset>>, dynamic-offsets-data-start: option<gpu-size64>, dynamic-offsets-data-length: option<gpu-size32>) -> result<_, set-bind-group-error>;
+    set-immediates: func(range-offset: gpu-size32, data: list<u8>, data-offset: option<gpu-size64>, data-size: option<gpu-size64>);
     set-pipeline: func(pipeline: borrow<gpu-render-pipeline>);
     set-index-buffer: func(buffer: borrow<gpu-buffer>, index-format: gpu-index-format, offset: option<gpu-size64>, size: option<gpu-size64>);
     set-vertex-buffer: func(slot: gpu-index32, buffer: option<borrow<gpu-buffer>>, offset: option<gpu-size64>, size: option<gpu-size64>);
@@ -716,13 +727,18 @@ interface webgpu {
     max-texture-array-layers: func() -> u32;
     max-bind-groups: func() -> u32;
     max-bind-groups-plus-vertex-buffers: func() -> u32;
+    max-immediate-size: func() -> u32;
     max-bindings-per-bind-group: func() -> u32;
     max-dynamic-uniform-buffers-per-pipeline-layout: func() -> u32;
     max-dynamic-storage-buffers-per-pipeline-layout: func() -> u32;
     max-sampled-textures-per-shader-stage: func() -> u32;
     max-samplers-per-shader-stage: func() -> u32;
     max-storage-buffers-per-shader-stage: func() -> u32;
+    max-storage-buffers-in-vertex-stage: func() -> u32;
+    max-storage-buffers-in-fragment-stage: func() -> u32;
     max-storage-textures-per-shader-stage: func() -> u32;
+    max-storage-textures-in-vertex-stage: func() -> u32;
+    max-storage-textures-in-fragment-stage: func() -> u32;
     max-uniform-buffers-per-shader-stage: func() -> u32;
     max-uniform-buffer-binding-size: func() -> u64;
     max-storage-buffer-binding-size: func() -> u64;
@@ -770,6 +786,7 @@ interface webgpu {
     dimension: func() -> gpu-texture-dimension;
     format: func() -> gpu-texture-format;
     usage: func() -> gpu-flags-constant;
+    texture-binding-view-dimension: func() -> option<gpu-texture-view-dimension>;
     label: func() -> string;
     set-label: func(label: string);
     from-graphics-buffer: static func(buffer: abstract-buffer) -> gpu-texture;
@@ -792,6 +809,7 @@ interface webgpu {
     format: gpu-texture-format,
     usage: gpu-texture-usage-flags,
     view-formats: option<list<gpu-texture-format>>,
+    texture-binding-view-dimension: option<gpu-texture-view-dimension>,
     label: option<string>,
   }
   enum gpu-texture-dimension {
@@ -804,6 +822,8 @@ interface webgpu {
     r8snorm,
     r8uint,
     r8sint,
+    r16unorm,
+    r16snorm,
     r16uint,
     r16sint,
     r16float,
@@ -814,6 +834,8 @@ interface webgpu {
     r32uint,
     r32sint,
     r32float,
+    rg16unorm,
+    rg16snorm,
     rg16uint,
     rg16sint,
     rg16float,
@@ -831,6 +853,8 @@ interface webgpu {
     rg32uint,
     rg32sint,
     rg32float,
+    rgba16unorm,
+    rgba16snorm,
     rgba16uint,
     rgba16sint,
     rgba16float,
@@ -909,6 +933,7 @@ interface webgpu {
     TEXTURE-BINDING: static func() -> gpu-flags-constant;
     STORAGE-BINDING: static func() -> gpu-flags-constant;
     RENDER-ATTACHMENT: static func() -> gpu-flags-constant;
+    TRANSIENT-ATTACHMENT: static func() -> gpu-flags-constant;
   }
   type gpu-texture-usage-flags = u32;
   resource gpu-texture-view {
@@ -924,6 +949,7 @@ interface webgpu {
     mip-level-count: option<gpu-integer-coordinate>,
     base-array-layer: option<gpu-integer-coordinate>,
     array-layer-count: option<gpu-integer-coordinate>,
+    swizzle: option<string>,
     label: option<string>,
   }
   enum gpu-texture-view-dimension {