Implement experimental Vulkan backend

Source/Core/VideoBackends/Vulkan/RasterFont.h

@@ -0,0 +1,39 @@
+// Copyright 2016 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <memory>
+#include <string>
+
+#include "Common/CommonTypes.h"
+
+#include "VideoBackends/Vulkan/Constants.h"
+
+namespace Vulkan
+{
+class Texture2D;
+
+class RasterFont
+{
+public:
+  RasterFont();
+  ~RasterFont();
+
+  bool Initialize();
+
+  void PrintMultiLineText(VkRenderPass render_pass, const std::string& text, float start_x,
+                          float start_y, u32 bbWidth, u32 bbHeight, u32 color);
+
+private:
+  bool CreateTexture();
+  bool CreateShaders();
+
+  std::unique_ptr<Texture2D> m_texture;
+
+  VkShaderModule m_vertex_shader = VK_NULL_HANDLE;
+  VkShaderModule m_fragment_shader = VK_NULL_HANDLE;
+};
+
+}  // namespace Vulkan