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Source/Engine/GraphicsDevice/Vulkan/GPUBufferVulkan.h

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+// Copyright (c) 2012-2020 Wojciech Figat. All rights reserved.
+
+#pragma once
+
+#if GRAPHICS_API_VULKAN
+
+#include "Engine/Graphics/GPUBuffer.h"
+#include "GPUDeviceVulkan.h"
+
+/// <summary>
+/// The buffer view for Vulkan backend.
+/// </summary>
+class GPUBufferViewVulkan : public GPUBufferView, public DescriptorOwnerResourceVulkan
+{
+public:
+
+    GPUBufferViewVulkan()
+    {
+    }
+
+#if BUILD_DEBUG
+    ~GPUBufferViewVulkan()
+    {
+        ASSERT(View == VK_NULL_HANDLE);
+    }
+#endif
+
+public:
+
+    GPUDeviceVulkan* Device = nullptr;
+    GPUBufferVulkan* Owner = nullptr;
+    VkBuffer Buffer = VK_NULL_HANDLE;
+    VkBufferView View = VK_NULL_HANDLE;
+    VkDeviceSize Size = 0;
+
+public:
+
+    void Init(GPUDeviceVulkan* device, GPUBufferVulkan* owner, VkBuffer buffer, VkDeviceSize size, PixelFormat format);
+
+    void Release();
+
+public:
+
+    // [GPUResourceView]
+    void* GetNativePtr() const override
+    {
+        return (void*)(DescriptorOwnerResourceVulkan*)this;
+    }
+
+    // [DescriptorOwnerResourceVulkan]
+    void DescriptorAsUniformTexelBuffer(GPUContextVulkan* context, const VkBufferView*& bufferView) override;
+    void DescriptorAsStorageBuffer(GPUContextVulkan* context, VkBuffer& buffer, VkDeviceSize& offset, VkDeviceSize& range) override;
+};
+
+/// <summary>
+/// GPU buffer for Vulkan backend.
+/// </summary>
+class GPUBufferVulkan : public GPUResourceVulkan<GPUBuffer>
+{
+private:
+
+    VkBuffer _buffer = VK_NULL_HANDLE;
+    VmaAllocation _allocation = VK_NULL_HANDLE;
+    GPUBufferViewVulkan _view;
+
+public:
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="GPUBufferVulkan"/> class.
+    /// </summary>
+    /// <param name="device">The device.</param>
+    /// <param name="name">The name.</param>
+    GPUBufferVulkan(GPUDeviceVulkan* device, const StringView& name)
+        : GPUResourceVulkan<GPUBuffer>(device, name)
+    {
+    }
+
+public:
+
+    /// <summary>
+    /// Gets the Vulkan buffer handle.
+    /// </summary>
+    /// <returns>The buffer handle.</returns>
+    FORCE_INLINE VkBuffer GetHandle() const
+    {
+        return _buffer;
+    }
+
+    /// <summary>
+    /// Gets the Vulkan memory allocation handle.
+    /// </summary>
+    /// <returns>The memory allocation handle.</returns>
+    FORCE_INLINE VmaAllocation GetAllocation() const
+    {
+        return _allocation;
+    }
+
+    /// <summary>
+    /// The current buffer access flags.
+    /// </summary>
+    VkAccessFlags Access;
+
+    /// <summary>
+    /// The counter buffer attached to the Append/Counter buffers.
+    /// </summary>
+    GPUBufferVulkan* Counter = nullptr;
+
+public:
+
+    // [GPUBuffer]
+    GPUBufferView* View() const override;
+    void* Map(GPUResourceMapMode mode) override;
+    void Unmap() override;
+
+protected:
+
+    // [GPUBuffer]
+    bool OnInit() override;
+    void OnReleaseGPU() override;
+};
+
+#endif