Video Backends: Split texture cache code out into separate files, introduce 'AbstractTexture'

Source/Core/VideoCommon/TextureConfig.h

@@ -0,0 +1,36 @@
+// Copyright 2017 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <cstddef>
+#include <functional>
+
+#include "Common/CommonTypes.h"
+#include "Common/MathUtil.h"
+#include "VideoCommon/VideoCommon.h"
+
+struct TextureConfig
+{
+  constexpr TextureConfig() = default;
+  bool operator==(const TextureConfig& o) const;
+  MathUtil::Rectangle<int> GetRect() const;
+
+  u32 width = 0;
+  u32 height = 0;
+  u32 levels = 1;
+  u32 layers = 1;
+  HostTextureFormat format = HostTextureFormat::RGBA8;
+  bool rendertarget = false;
+
+  struct Hasher : std::hash<u64>
+  {
+    size_t operator()(const TextureConfig& c) const
+    {
+      u64 id = (u64)c.rendertarget << 63 | (u64)c.format << 50 | (u64)c.layers << 48 |
+               (u64)c.levels << 32 | (u64)c.height << 16 | (u64)c.width;
+      return std::hash<u64>::operator()(id);
+    }
+  };
+};