gpu: rename native -> NativeInstance

Signed-off-by: Stephen Gutekanst <stephen@hexops.com>

gpu/src/NativeInstance.zig

@@ -0,0 +1,31 @@
+//! A native webgpu.h implementation of the gpu.Interface
+const c = @import("c.zig").c;
+const Interface = @import("Interface.zig");
+
+const NativeInstance = @This();
+
+/// The WGPUInstance that is wrapped by this native instance.
+instance: c.WGPUInstance,
+
+/// Returns the gpu.Interface for interacting with this native instance.
+pub fn interface(native: NativeInstance) Interface {
+    _ = native;
+    @panic("not implemented");
+
+    // TODO: implement Interface
+
+    // TODO: implement Device interface
+
+    // TODO: implement Adapter interface:
+    // typedef struct WGPUAdapterImpl* WGPUAdapter;
+    // // Methods of Adapter
+    // WGPU_EXPORT size_t wgpuAdapterEnumerateFeatures(WGPUAdapter adapter, WGPUFeatureName * features);
+    // WGPU_EXPORT bool wgpuAdapterHasFeature(WGPUAdapter adapter, WGPUFeatureName feature);
+    // WGPU_EXPORT bool wgpuAdapterGetLimits(WGPUAdapter adapter, WGPUSupportedLimits * limits);
+    // WGPU_EXPORT void wgpuAdapterGetProperties(WGPUAdapter adapter, WGPUAdapterProperties * properties);
+}
+
+/// Wraps a native WGPUInstance to provide an implementation of the gpu.Interface.
+pub fn wrap(instance: c.WGPUInstance) NativeInstance {
+    return .{ .instance = instance };
+}