diff --git a/gpu/README.md b/gpu/README.md
index de2be81a..9e45b701 100644
--- a/gpu/README.md
+++ b/gpu/README.md
@@ -168,6 +168,7 @@ And, to initialize data structures with slices in them, the following helpers ar
 * `BindGroupLayout.Descriptor.init`
 * `BindGroup.Descriptor.init`
 * `InstanceDescriptor.init`
+* `TogglesDeviceDescriptor.init`
 
 ### Typed callbacks
 
diff --git a/gpu/src/bind_group.zig b/gpu/src/bind_group.zig
index aeff3818..8d354ec7 100644
--- a/gpu/src/bind_group.zig
+++ b/gpu/src/bind_group.zig
@@ -52,7 +52,7 @@ pub const BindGroup = opaque {
         entries: ?[*]const Entry = null,
 
         /// Provides a slightly friendlier Zig API to initialize this structure.
-        pub fn init(v: struct {
+        pub inline fn init(v: struct {
             next_in_chain: ?*const ChainedStruct = null,
             label: ?[*:0]const u8 = null,
             layout: *BindGroupLayout,
diff --git a/gpu/src/bind_group_layout.zig b/gpu/src/bind_group_layout.zig
index 8a0ffdda..5ad696de 100644
--- a/gpu/src/bind_group_layout.zig
+++ b/gpu/src/bind_group_layout.zig
@@ -96,7 +96,7 @@ pub const BindGroupLayout = opaque {
         entries: ?[*]const Entry = null,
 
         /// Provides a slightly friendlier Zig API to initialize this structure.
-        pub fn init(v: struct {
+        pub inline fn init(v: struct {
             next_in_chain: ?*const ChainedStruct = null,
             label: ?[*:0]const u8 = null,
             entries: ?[]const Entry = null,
diff --git a/gpu/src/dawn.zig b/gpu/src/dawn.zig
index 260f5d6a..c1e8979e 100644
--- a/gpu/src/dawn.zig
+++ b/gpu/src/dawn.zig
@@ -21,7 +21,7 @@ pub const InstanceDescriptor = extern struct {
     additional_runtime_search_paths: ?[*]const u8 = null,
 
     /// Provides a slightly friendlier Zig API to initialize this structure.
-    pub fn init(v: struct {
+    pub inline fn init(v: struct {
         chain: ChainedStruct,
         additional_runtime_search_paths: ?[]const u8 = null,
     }) InstanceDescriptor {
@@ -42,10 +42,23 @@ pub const TextureInternalUsageDescriptor = extern struct {
 /// TODO: Can be chained in gpu.Device.Descriptor
 pub const TogglesDeviceDescriptor = extern struct {
     chain: ChainedStruct,
-    // TODO: slice helper
     force_enabled_toggles_count: u32 = 0,
     force_enabled_toggles: ?[*]const u8 = null,
-    // TODO: slice helper
     force_disabled_toggles_count: u32 = 0,
     force_disabled_toggles: ?[*]const u8 = null,
+
+    /// Provides a slightly friendlier Zig API to initialize this structure.
+    pub inline fn init(v: struct {
+        chain: ChainedStruct,
+        force_enabled_toggles: ?[]const u8 = null,
+        force_disabled_toggles: ?[]const u8 = null,
+    }) TogglesDeviceDescriptor {
+        return .{
+            .chain = v.chain,
+            .force_enabled_toggles_count = if (v.force_enabled_toggles) |e| @intCast(u32, e.len) else 0,
+            .force_enabled_toggles = if (v.force_enabled_toggles) |e| e.ptr else null,
+            .force_disabled_toggles_count = if (v.force_disabled_toggles) |e| @intCast(u32, e.len) else 0,
+            .force_disabled_toggles = if (v.force_disabled_toggles) |e| e.ptr else null,
+        };
+    }
 };