diff --git a/generator/dawn_json_generator.py b/generator/dawn_json_generator.py
index f48e5e4..be15392 100644
--- a/generator/dawn_json_generator.py
+++ b/generator/dawn_json_generator.py
@@ -57,7 +57,7 @@
             self.chunks = name.split(' ')
 
     def __lt__(self, other):
-        return self.get() < other.get()
+        return self.concatcase().lower() < other.concatcase().lower()
 
     def get(self):
         return self.name
@@ -498,7 +498,7 @@
         return method
 
     obj.methods = [make_method(m) for m in obj.json_data.get('methods', [])]
-    obj.methods.sort(key=lambda method: method.name.concatcase().lower())
+    obj.methods.sort(key=lambda method: method.name)
 
 def link_structure(struct, types):
     struct.members = linked_record_members(struct.json_data['members'], types)
@@ -642,10 +642,13 @@
     for function in by_category['function']:
         link_function(function, types)
 
+    # Sort everything by name
     for category in by_category.keys():
-        by_category[category] = sorted(
-            by_category[category],
-            key=lambda typ: typ.name.concatcase().lower())
+        by_category[category] = sorted(by_category[category],
+                                       key=lambda typ: typ.name)
+    # Then sort GetProcAddress last
+    by_category['function'].sort(
+        key=lambda f: f.name.get() == 'get proc address')
 
     by_category['structure'] = topo_sort_structure(by_category['structure'])
 
diff --git a/src/dawn/dawn.json b/src/dawn/dawn.json
index 5c9a2e1..73fdb72 100644
--- a/src/dawn/dawn.json
+++ b/src/dawn/dawn.json
@@ -2435,7 +2435,7 @@
                 "returns": "wait status",
                 "args": [
                     {"name": "future count", "type": "size_t"},
-                    {"name": "futures", "type": "future wait info", "annotation": "*", "length": "future count"},
+                    {"name": "futures", "type": "future wait info", "annotation": "*", "length": "future count", "optional": true, "no_default": true},
                     {"name": "timeout NS", "type": "uint64_t"}
                 ]
             },
diff --git a/third_party/webgpu-headers/webgpu.h.diff b/third_party/webgpu-headers/webgpu.h.diff
index 8ec1401..e69de29 100644
--- a/third_party/webgpu-headers/webgpu.h.diff
+++ b/third_party/webgpu-headers/webgpu.h.diff
@@ -1,68 +0,0 @@
---- webgpu_header
-+++ dawn_header
-@@
- typedef WGPUInstance (*WGPUProcCreateInstance)(WGPU_NULLABLE WGPUInstanceDescriptor const * descriptor) WGPU_FUNCTION_ATTRIBUTE;
- typedef void (*WGPUProcGetInstanceFeatures)(WGPUSupportedInstanceFeatures * features) WGPU_FUNCTION_ATTRIBUTE;
- typedef WGPUStatus (*WGPUProcGetInstanceLimits)(WGPUInstanceLimits * limits) WGPU_FUNCTION_ATTRIBUTE;
-+typedef WGPUProc (*WGPUProcGetProcAddress)(WGPUStringView procName) WGPU_FUNCTION_ATTRIBUTE;
- typedef WGPUBool (*WGPUProcHasInstanceFeature)(WGPUInstanceFeatureName feature) WGPU_FUNCTION_ATTRIBUTE;
--typedef WGPUProc (*WGPUProcGetProcAddress)(WGPUStringView procName) WGPU_FUNCTION_ATTRIBUTE;
- 
- 
- typedef void (*WGPUProcAdapterGetFeatures)(WGPUAdapter adapter, WGPUSupportedFeatures * features) WGPU_FUNCTION_ATTRIBUTE;
-@@
- typedef WGPUBool (*WGPUProcInstanceHasWGSLLanguageFeature)(WGPUInstance instance, WGPUWGSLLanguageFeatureName feature) WGPU_FUNCTION_ATTRIBUTE;
- typedef void (*WGPUProcInstanceProcessEvents)(WGPUInstance instance) WGPU_FUNCTION_ATTRIBUTE;
- typedef WGPUFuture (*WGPUProcInstanceRequestAdapter)(WGPUInstance instance, WGPU_NULLABLE WGPURequestAdapterOptions const * options, WGPURequestAdapterCallbackInfo callbackInfo) WGPU_FUNCTION_ATTRIBUTE;
--typedef WGPUWaitStatus (*WGPUProcInstanceWaitAny)(WGPUInstance instance, size_t futureCount, WGPU_NULLABLE WGPUFutureWaitInfo * futures, uint64_t timeoutNS) WGPU_FUNCTION_ATTRIBUTE;
-+typedef WGPUWaitStatus (*WGPUProcInstanceWaitAny)(WGPUInstance instance, size_t futureCount, WGPUFutureWaitInfo * futures, uint64_t timeoutNS) WGPU_FUNCTION_ATTRIBUTE;
- typedef void (*WGPUProcInstanceAddRef)(WGPUInstance instance) WGPU_FUNCTION_ATTRIBUTE;
- typedef void (*WGPUProcInstanceRelease)(WGPUInstance instance) WGPU_FUNCTION_ATTRIBUTE;
- 
-@@
- typedef void (*WGPUProcShaderModuleAddRef)(WGPUShaderModule shaderModule) WGPU_FUNCTION_ATTRIBUTE;
- typedef void (*WGPUProcShaderModuleRelease)(WGPUShaderModule shaderModule) WGPU_FUNCTION_ATTRIBUTE;
- 
-+typedef void (*WGPUProcSupportedWGSLLanguageFeaturesFreeMembers)(WGPUSupportedWGSLLanguageFeatures supportedWGSLLanguageFeatures) WGPU_FUNCTION_ATTRIBUTE;
-+
- typedef void (*WGPUProcSupportedFeaturesFreeMembers)(WGPUSupportedFeatures supportedFeatures) WGPU_FUNCTION_ATTRIBUTE;
- 
- typedef void (*WGPUProcSupportedInstanceFeaturesFreeMembers)(WGPUSupportedInstanceFeatures supportedInstanceFeatures) WGPU_FUNCTION_ATTRIBUTE;
--
--typedef void (*WGPUProcSupportedWGSLLanguageFeaturesFreeMembers)(WGPUSupportedWGSLLanguageFeatures supportedWGSLLanguageFeatures) WGPU_FUNCTION_ATTRIBUTE;
- 
- typedef void (*WGPUProcSurfaceConfigure)(WGPUSurface surface, WGPUSurfaceConfiguration const * config) WGPU_FUNCTION_ATTRIBUTE;
- typedef WGPUStatus (*WGPUProcSurfaceGetCapabilities)(WGPUSurface surface, WGPUAdapter adapter, WGPUSurfaceCapabilities * capabilities) WGPU_FUNCTION_ATTRIBUTE;
-@@
- WGPU_EXPORT WGPUInstance wgpuCreateInstance(WGPU_NULLABLE WGPUInstanceDescriptor const * descriptor) WGPU_FUNCTION_ATTRIBUTE;
- WGPU_EXPORT void wgpuGetInstanceFeatures(WGPUSupportedInstanceFeatures * features) WGPU_FUNCTION_ATTRIBUTE;
- WGPU_EXPORT WGPUStatus wgpuGetInstanceLimits(WGPUInstanceLimits * limits) WGPU_FUNCTION_ATTRIBUTE;
-+WGPU_EXPORT WGPUProc wgpuGetProcAddress(WGPUStringView procName) WGPU_FUNCTION_ATTRIBUTE;
- WGPU_EXPORT WGPUBool wgpuHasInstanceFeature(WGPUInstanceFeatureName feature) WGPU_FUNCTION_ATTRIBUTE;
--WGPU_EXPORT WGPUProc wgpuGetProcAddress(WGPUStringView procName) WGPU_FUNCTION_ATTRIBUTE;
- 
- WGPU_EXPORT void wgpuAdapterGetFeatures(WGPUAdapter adapter, WGPUSupportedFeatures * features) WGPU_FUNCTION_ATTRIBUTE;
- WGPU_EXPORT WGPUStatus wgpuAdapterGetInfo(WGPUAdapter adapter, WGPUAdapterInfo * info) WGPU_FUNCTION_ATTRIBUTE;
-@@
- WGPU_EXPORT WGPUBool wgpuInstanceHasWGSLLanguageFeature(WGPUInstance instance, WGPUWGSLLanguageFeatureName feature) WGPU_FUNCTION_ATTRIBUTE;
- WGPU_EXPORT void wgpuInstanceProcessEvents(WGPUInstance instance) WGPU_FUNCTION_ATTRIBUTE;
- WGPU_EXPORT WGPUFuture wgpuInstanceRequestAdapter(WGPUInstance instance, WGPU_NULLABLE WGPURequestAdapterOptions const * options, WGPURequestAdapterCallbackInfo callbackInfo) WGPU_FUNCTION_ATTRIBUTE;
--WGPU_EXPORT WGPUWaitStatus wgpuInstanceWaitAny(WGPUInstance instance, size_t futureCount, WGPU_NULLABLE WGPUFutureWaitInfo * futures, uint64_t timeoutNS) WGPU_FUNCTION_ATTRIBUTE;
-+WGPU_EXPORT WGPUWaitStatus wgpuInstanceWaitAny(WGPUInstance instance, size_t futureCount, WGPUFutureWaitInfo * futures, uint64_t timeoutNS) WGPU_FUNCTION_ATTRIBUTE;
- WGPU_EXPORT void wgpuInstanceAddRef(WGPUInstance instance) WGPU_FUNCTION_ATTRIBUTE;
- WGPU_EXPORT void wgpuInstanceRelease(WGPUInstance instance) WGPU_FUNCTION_ATTRIBUTE;
- 
-@@
- WGPU_EXPORT void wgpuShaderModuleAddRef(WGPUShaderModule shaderModule) WGPU_FUNCTION_ATTRIBUTE;
- WGPU_EXPORT void wgpuShaderModuleRelease(WGPUShaderModule shaderModule) WGPU_FUNCTION_ATTRIBUTE;
- 
-+WGPU_EXPORT void wgpuSupportedWGSLLanguageFeaturesFreeMembers(WGPUSupportedWGSLLanguageFeatures supportedWGSLLanguageFeatures) WGPU_FUNCTION_ATTRIBUTE;
-+
- WGPU_EXPORT void wgpuSupportedFeaturesFreeMembers(WGPUSupportedFeatures supportedFeatures) WGPU_FUNCTION_ATTRIBUTE;
- 
- WGPU_EXPORT void wgpuSupportedInstanceFeaturesFreeMembers(WGPUSupportedInstanceFeatures supportedInstanceFeatures) WGPU_FUNCTION_ATTRIBUTE;
--
--WGPU_EXPORT void wgpuSupportedWGSLLanguageFeaturesFreeMembers(WGPUSupportedWGSLLanguageFeatures supportedWGSLLanguageFeatures) WGPU_FUNCTION_ATTRIBUTE;
- 
- WGPU_EXPORT void wgpuSurfaceConfigure(WGPUSurface surface, WGPUSurfaceConfiguration const * config) WGPU_FUNCTION_ATTRIBUTE;
- WGPU_EXPORT WGPUStatus wgpuSurfaceGetCapabilities(WGPUSurface surface, WGPUAdapter adapter, WGPUSurfaceCapabilities * capabilities) WGPU_FUNCTION_ATTRIBUTE;