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

Source/Core/VideoCommon/TextureConfig.cpp

@@ -0,0 +1,18 @@
+// Copyright 2017 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#include "VideoCommon/TextureConfig.h"
+
+#include <tuple>
+
+bool TextureConfig::operator==(const TextureConfig& o) const
+{
+  return std::tie(width, height, levels, layers, format, rendertarget) ==
+         std::tie(o.width, o.height, o.levels, o.layers, o.format, o.rendertarget);
+}
+
+MathUtil::Rectangle<int> TextureConfig::GetRect() const
+{
+  return {0, 0, static_cast<int>(width), static_cast<int>(height)};
+}