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

Source/Core/VideoCommon/AbstractTexture.h

@@ -0,0 +1,33 @@
+// Copyright 2017 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "Common/CommonTypes.h"
+#include "Common/MathUtil.h"
+#include "VideoCommon/TextureConfig.h"
+#include "VideoCommon/VideoCommon.h"
+
+class AbstractTexture
+{
+public:
+  explicit AbstractTexture(const TextureConfig& c);
+  virtual ~AbstractTexture();
+  virtual void Bind(unsigned int stage) = 0;
+  virtual bool Save(const std::string& filename, unsigned int level);
+
+  virtual void CopyRectangleFromTexture(const AbstractTexture* source,
+                                        const MathUtil::Rectangle<int>& srcrect,
+                                        const MathUtil::Rectangle<int>& dstrect) = 0;
+  virtual void Load(u32 level, u32 width, u32 height, u32 row_length, const u8* buffer,
+                    size_t buffer_size) = 0;
+
+  static bool IsCompressedHostTextureFormat(HostTextureFormat format);
+  static size_t CalculateHostTextureLevelPitch(HostTextureFormat format, u32 row_length);
+
+  const TextureConfig GetConfig() const;
+
+protected:
+  const TextureConfig m_config;
+};