working on WebGPU support

Sources/Backends/WebGPU/WebGPU.h

@@ -0,0 +1,26 @@
+// Copyright (C) 2025 kanel
+// This file is part of "Pulse"
+// For conditions of distribution and use, see copyright notice in LICENSE
+
+#include <Pulse.h>
+
+#ifdef PULSE_ENABLE_WEBGPU_BACKEND
+
+#ifndef PULSE_WEBGPU_H_
+#define PULSE_WEBGPU_H_
+
+#include <webgpu/webgpu.h>
+
+#define WEBGPU_RETRIEVE_DRIVER_DATA_AS(handle, cast) ((cast)handle->driver_data)
+
+typedef struct WebGPUDriverData
+{
+	WGPUInstance instance;
+} WebGPUDriverData;
+
+PulseBackendFlags WebGPUCheckSupport(PulseBackendFlags candidates, PulseShaderFormatsFlags shader_formats_used); // Return PULSE_BACKEND_WEBGPU in case of success and PULSE_BACKEND_INVALID otherwise
+
+#endif // PULSE_WEBGPU_H_
+
+#endif // PULSE_ENABLE_WEBGPU_BACKEND
+