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

Source/Core/VideoBackends/OGL/OGLTexture.h

@@ -0,0 +1,40 @@
+// Copyright 2017 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "Common/GL/GLUtil.h"
+
+#include "VideoCommon/AbstractTexture.h"
+#include "VideoCommon/VideoCommon.h"
+
+namespace OGL
+{
+class OGLTexture final : public AbstractTexture
+{
+public:
+  explicit OGLTexture(const TextureConfig& tex_config);
+  ~OGLTexture();
+
+  void Bind(unsigned int stage) override;
+  bool Save(const std::string& filename, unsigned int level) override;
+
+  void CopyRectangleFromTexture(const AbstractTexture* source,
+                                const MathUtil::Rectangle<int>& srcrect,
+                                const MathUtil::Rectangle<int>& dstrect) override;
+  void Load(u32 level, u32 width, u32 height, u32 row_length, const u8* buffer,
+            size_t buffer_size) override;
+
+  GLuint GetRawTexIdentifier() const;
+  GLuint GetFramebuffer() const;
+
+  static void DisableStage(unsigned int stage);
+  static void SetStage();
+
+private:
+  GLuint m_texId;
+  GLuint m_framebuffer = 0;
+};
+
+}  // namespace OGL