Add initial base implementation for WebGPU rendering backend

Source/Engine/GraphicsDevice/WebGPU/GPUDeviceWebGPU.h

@@ -0,0 +1,84 @@
+// Copyright (c) Wojciech Figat. All rights reserved.
+
+#pragma once
+
+#if GRAPHICS_API_WEBGPU
+
+#include "Engine/Graphics/GPUDevice.h"
+#include "Engine/Graphics/GPUResource.h"
+#include "IncludeWebGPU.h"
+
+class GPUContextWebGPU;
+class GPUAdapterWebGPU;
+class GPUSamplerWebGPU;
+
+/// <summary>
+/// Implementation of Graphics Device for Web GPU backend.
+/// </summary>
+class GPUDeviceWebGPU : public GPUDevice
+{
+private:
+    GPUContextWebGPU* _mainContext = nullptr;
+
+public:
+    GPUDeviceWebGPU(WGPUInstance instance, GPUAdapterWebGPU* adapter);
+    ~GPUDeviceWebGPU();
+
+public:
+    GPUAdapterWebGPU* Adapter = nullptr;
+    WGPUInstance WebGPUInstance;
+    WGPUDevice Device = nullptr;
+    WGPUQueue Queue = nullptr;
+    GPUSamplerWebGPU* DefaultSamplers[6] = {};
+
+public:
+    // [GPUDeviceDX]
+    GPUContext* GetMainContext() override
+    {
+        return (GPUContext*)_mainContext;
+    }
+    GPUAdapter* GetAdapter() const override
+    {
+        return (GPUAdapter*)Adapter;
+    }
+    void* GetNativePtr() const override
+    {
+        return Device;
+    }
+    bool Init() override;
+    void Dispose() override;
+    void WaitForGPU() override;
+    bool GetQueryResult(uint64 queryID, uint64& result, bool wait = false) override;
+    GPUTexture* CreateTexture(const StringView& name) override;
+    GPUShader* CreateShader(const StringView& name) override;
+    GPUPipelineState* CreatePipelineState() override;
+    GPUTimerQuery* CreateTimerQuery() override;
+    GPUBuffer* CreateBuffer(const StringView& name) override;
+    GPUSampler* CreateSampler() override;
+    GPUVertexLayout* CreateVertexLayout(const VertexElements& elements, bool explicitOffsets) override;
+    GPUSwapChain* CreateSwapChain(Window* window) override;
+    GPUConstantBuffer* CreateConstantBuffer(uint32 size, const StringView& name) override;
+};
+
+/// <summary>
+/// GPU resource implementation for Web GPU backend.
+/// </summary>
+template<class BaseType>
+class GPUResourceWebGPU : public GPUResourceBase<GPUDeviceWebGPU, BaseType>
+{
+public:
+    GPUResourceWebGPU(GPUDeviceWebGPU* device, const StringView& name) noexcept
+        : GPUResourceBase<GPUDeviceWebGPU, BaseType>(device, name)
+    {
+    }
+};
+
+struct GPUResourceViewPtrWebGPU
+{
+    class GPUBufferViewWebGPU* BufferView;
+    class GPUTextureViewWebGPU* TextureView;
+};
+
+extern GPUDevice* CreateGPUDeviceWebGPU();
+
+#endif