Merge pull request #7450 from stenzek/glcontext

GLInterface refactoring/cleanup and runtime platform selection

32 files changed, 889 insertions, 984 deletions

diff --git a/Source/Core/Common/CMakeLists.txt b/Source/Core/Common/CMakeLists.txt
index 507e08662e..b75c88d013 100644
--- a/Source/Core/Common/CMakeLists.txt
+++ b/Source/Core/Common/CMakeLists.txt
@@ -110,17 +110,18 @@ endif()
 target_sources(common PRIVATE
   GL/GLUtil.cpp
   GL/GLExtensions/GLExtensions.cpp
-  GL/GLInterface/GLInterface.cpp
+  GL/GLContext.cpp
 )
 
-if(USE_EGL)
+if(ENABLE_EGL AND EGL_FOUND)
   target_sources(common PRIVATE GL/GLInterface/EGL.cpp)
   if(ANDROID)
     target_sources(common PRIVATE GL/GLInterface/EGLAndroid.cpp)
-  elseif(USE_X11)
+  elseif(ENABLE_X11 AND X11_FOUND)
     target_sources(common PRIVATE GL/GLInterface/EGLX11.cpp)
   endif()
-  target_link_libraries(common PUBLIC EGL)
+  target_include_directories(common PRIVATE ${EGL_INCLUDE_DIRS})
+  target_link_libraries(common PUBLIC ${EGL_LIBRARIES})
 endif()
 
 if(WIN32)
@@ -130,18 +131,14 @@ if(WIN32)
   )
 elseif(APPLE)
   target_sources(common PRIVATE GL/GLInterface/AGL.mm)
-elseif(HAIKU)
-  target_sources(common PRIVATE GL/GLInterface/BGL.cpp)
-  target_link_libraries(common PUBLIC be GL)
-elseif(USE_X11)
-  if (NOT USE_EGL)
-    target_sources(common PRIVATE GL/GLInterface/GLX.cpp)
-    # GLX has a hard dependency on libGL.
-    # Make sure to link to it if using GLX.
-    target_link_libraries(common PUBLIC ${OPENGL_LIBRARIES})
-  endif()
-  target_sources(common PRIVATE GL/GLInterface/X11_Util.cpp)
-  target_link_libraries(common PUBLIC ${XRANDR_LIBRARIES})
+elseif(ENABLE_X11 AND X11_FOUND)
+  target_sources(common PRIVATE
+    GL/GLX11Window.cpp
+    GL/GLInterface/GLX.cpp)
+
+  # GLX has a hard dependency on libGL.
+  # Make sure to link to it if using GLX.
+  target_link_libraries(common PUBLIC ${OPENGL_LIBRARIES})
 endif()
 
 if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
@@ -163,9 +160,6 @@ if(UNIX)
   if(SYSTEMD_FOUND)
     target_link_libraries(traversal_server PRIVATE ${SYSTEMD_LIBRARIES})
   endif()
-  if(HAIKU)
-    target_link_libraries(traversal_server PRIVATE network)
-  endif()
 elseif(WIN32)
   target_link_libraries(common PRIVATE "-INCLUDE:enableCompatPatches")
 endif()
diff --git a/Source/Core/Common/Common.vcxproj b/Source/Core/Common/Common.vcxproj
index d0751f8c3f..23752002cf 100644
--- a/Source/Core/Common/Common.vcxproj
+++ b/Source/Core/Common/Common.vcxproj
@@ -121,7 +121,7 @@
     <ClInclude Include="GL\GLExtensions\NV_depth_buffer_float.h" />
     <ClInclude Include="GL\GLExtensions\NV_occlusion_query_samples.h" />
     <ClInclude Include="GL\GLExtensions\NV_primitive_restart.h" />
-    <ClInclude Include="GL\GLInterfaceBase.h" />
+    <ClInclude Include="GL\GLContext.h" />
     <ClInclude Include="GL\GLInterface\WGL.h" />
     <ClInclude Include="GL\GLUtil.h" />
     <ClInclude Include="FloatUtils.h" />
@@ -189,7 +189,7 @@
     <ClCompile Include="FloatUtils.cpp" />
     <ClCompile Include="GekkoDisassembler.cpp" />
     <ClCompile Include="GL\GLExtensions\GLExtensions.cpp" />
-    <ClCompile Include="GL\GLInterface\GLInterface.cpp" />
+    <ClCompile Include="GL\GLContext.cpp" />
     <ClCompile Include="GL\GLInterface\WGL.cpp" />
     <ClCompile Include="GL\GLUtil.cpp" />
     <ClCompile Include="Hash.cpp" />
@@ -255,4 +255,4 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>
-</Project>
+</Project>
\ No newline at end of file
diff --git a/Source/Core/Common/Common.vcxproj.filters b/Source/Core/Common/Common.vcxproj.filters
index 3737a5a1ff..63a131a8dc 100644
--- a/Source/Core/Common/Common.vcxproj.filters
+++ b/Source/Core/Common/Common.vcxproj.filters
@@ -243,9 +243,6 @@
     <ClInclude Include="GL\GLInterface\WGL.h">
       <Filter>GL\GLInterface</Filter>
     </ClInclude>
-    <ClInclude Include="GL\GLInterfaceBase.h">
-      <Filter>GL\GLInterface</Filter>
-    </ClInclude>
     <ClInclude Include="Assert.h" />
     <ClInclude Include="Analytics.h" />
     <ClInclude Include="Semaphore.h" />
@@ -275,6 +272,9 @@
     <ClInclude Include="Debug\MemoryPatches.h">
       <Filter>Debug</Filter>
     </ClInclude>
+    <ClInclude Include="GL\GLContext.h">
+      <Filter>GL\GLInterface</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="CDUtils.cpp" />
@@ -339,9 +339,6 @@
     <ClCompile Include="GL\GLInterface\WGL.cpp">
       <Filter>GL\GLInterface</Filter>
     </ClCompile>
-    <ClCompile Include="GL\GLInterface\GLInterface.cpp">
-      <Filter>GL\GLInterface</Filter>
-    </ClCompile>
     <ClCompile Include="Analytics.cpp" />
     <ClCompile Include="MD5.cpp" />
     <ClCompile Include="File.cpp" />
@@ -355,6 +352,9 @@
     <ClCompile Include="Debug\MemoryPatches.cpp">
       <Filter>Debug</Filter>
     </ClCompile>
+    <ClCompile Include="GL\GLContext.cpp">
+      <Filter>GL\GLInterface</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <Text Include="CMakeLists.txt" />
@@ -362,4 +362,4 @@
   <ItemGroup>
     <Natvis Include="BitField.natvis" />
   </ItemGroup>
-</Project>
+</Project>
\ No newline at end of file
diff --git a/Source/Core/Common/GL/GLContext.cpp b/Source/Core/Common/GL/GLContext.cpp
new file mode 100644
index 0000000000..b02e27778f
--- /dev/null
+++ b/Source/Core/Common/GL/GLContext.cpp
@@ -0,0 +1,126 @@
+// Copyright 2014 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#include <memory>
+
+#include "Common/GL/GLContext.h"
+
+#if defined(__APPLE__)
+#include "Common/GL/GLInterface/AGL.h"
+#endif
+#if defined(WIN32)
+#include "Common/GL/GLInterface/WGL.h"
+#endif
+#if HAVE_X11
+#include "Common/GL/GLInterface/GLX.h"
+#endif
+#if HAVE_EGL
+#include "Common/GL/GLInterface/EGL.h"
+#if HAVE_X11
+#include "Common/GL/GLInterface/EGLX11.h"
+#endif
+#if defined(ANDROID)
+#include "Common/GL/GLInterface/EGLAndroid.h"
+#endif
+#endif
+
+const std::array<std::pair<int, int>, 9> GLContext::s_desktop_opengl_versions = {
+    {{4, 6}, {4, 5}, {4, 4}, {4, 3}, {4, 2}, {4, 1}, {4, 0}, {3, 3}, {3, 2}}};
+
+GLContext::~GLContext() = default;
+
+bool GLContext::Initialize(void* display_handle, void* window_handle, bool stereo, bool core)
+{
+  return false;
+}
+
+bool GLContext::IsHeadless() const
+{
+  return true;
+}
+
+std::unique_ptr<GLContext> GLContext::CreateSharedContext()
+{
+  return nullptr;
+}
+
+bool GLContext::MakeCurrent()
+{
+  return false;
+}
+
+bool GLContext::ClearCurrent()
+{
+  return false;
+}
+
+void GLContext::Update()
+{
+}
+
+void GLContext::UpdateSurface(void* window_handle)
+{
+}
+
+void GLContext::Swap()
+{
+}
+
+void GLContext::SwapInterval(int interval)
+{
+}
+
+void* GLContext::GetFuncAddress(const std::string& name)
+{
+  return nullptr;
+}
+
+std::unique_ptr<GLContext> GLContext::Create(const WindowSystemInfo& wsi, bool stereo, bool core,
+                                             bool prefer_egl, bool prefer_gles)
+{
+  std::unique_ptr<GLContext> context;
+#if defined(__APPLE__)
+  if (wsi.type == WindowSystemType::MacOS || wsi.type == WindowSystemType::Headless)
+    context = std::make_unique<GLContextAGL>();
+#endif
+#if defined(_WIN32)
+  if (wsi.type == WindowSystemType::Windows)
+    context = std::make_unique<GLContextWGL>();
+#endif
+#if defined(ANDROID)
+  if (wsi.type == WindowSystemType::Android)
+    context = std::make_unique<GLContextEGLAndroid>();
+#endif
+#if HAVE_X11
+  if (wsi.type == WindowSystemType::X11)
+  {
+    // GLES 3 is not supported via GLX.
+    const bool use_egl = prefer_egl || prefer_gles;
+#if defined(HAVE_EGL)
+    if (use_egl)
+      context = std::make_unique<GLContextEGLX11>();
+    else
+      context = std::make_unique<GLContextGLX>();
+#else
+    context = std::make_unique<GLContextGLX>();
+#endif
+  }
+#endif
+#if HAVE_EGL
+  if (wsi.type == WindowSystemType::Headless)
+    context = std::make_unique<GLContextEGL>();
+#endif
+
+  if (!context)
+    return nullptr;
+
+  // Option to prefer GLES on desktop platforms, useful for testing.
+  if (prefer_gles)
+    context->m_opengl_mode = Mode::OpenGLES;
+
+  if (!context->Initialize(wsi.display_connection, wsi.render_surface, stereo, core))
+    return nullptr;
+
+  return context;
+}
diff --git a/Source/Core/Common/GL/GLContext.h b/Source/Core/Common/GL/GLContext.h
new file mode 100644
index 0000000000..074ea3cc6d
--- /dev/null
+++ b/Source/Core/Common/GL/GLContext.h
@@ -0,0 +1,67 @@
+// Copyright 2008 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <array>
+#include <memory>
+#include <string>
+#include <utility>
+
+#include "Common/CommonTypes.h"
+#include "Common/WindowSystemInfo.h"
+
+class GLContext
+{
+public:
+  enum class Mode
+  {
+    Detect,
+    OpenGL,
+    OpenGLES
+  };
+
+  virtual ~GLContext();
+
+  Mode GetMode() { return m_opengl_mode; }
+  bool IsGLES() const { return m_opengl_mode == Mode::OpenGLES; }
+
+  u32 GetBackBufferWidth() { return m_backbuffer_width; }
+  u32 GetBackBufferHeight() { return m_backbuffer_height; }
+
+  virtual bool IsHeadless() const;
+
+  virtual std::unique_ptr<GLContext> CreateSharedContext();
+
+  virtual bool MakeCurrent();
+  virtual bool ClearCurrent();
+
+  virtual void Update();
+  virtual void UpdateSurface(void* window_handle);
+
+  virtual void Swap();
+  virtual void SwapInterval(int interval);
+
+  virtual void* GetFuncAddress(const std::string& name);
+
+  // Creates an instance of GLContext specific to the platform we are running on.
+  // If successful, the context is made current on the calling thread.
+  static std::unique_ptr<GLContext> Create(const WindowSystemInfo& wsi, bool stereo = false,
+                                           bool core = true, bool prefer_egl = false,
+                                           bool prefer_gles = false);
+
+protected:
+  virtual bool Initialize(void* display_handle, void* window_handle, bool stereo, bool core);
+
+  Mode m_opengl_mode = Mode::Detect;
+
+  // Window dimensions.
+  u32 m_backbuffer_width = 0;
+  u32 m_backbuffer_height = 0;
+  bool m_is_shared = false;
+
+  // A list of desktop OpenGL versions to attempt to create a context for.
+  // (4.6-3.2, geometry shaders is a minimum requirement since we're using core profile).
+  static const std::array<std::pair<int, int>, 9> s_desktop_opengl_versions;
+};
diff --git a/Source/Core/Common/GL/GLExtensions/GLExtensions.cpp b/Source/Core/Common/GL/GLExtensions/GLExtensions.cpp
index 9252a7bed3..641559a29a 100644
--- a/Source/Core/Common/GL/GLExtensions/GLExtensions.cpp
+++ b/Source/Core/Common/GL/GLExtensions/GLExtensions.cpp
@@ -5,8 +5,8 @@
 #include <sstream>
 #include <unordered_map>
 
+#include "Common/GL/GLContext.h"
 #include "Common/GL/GLExtensions/GLExtensions.h"
-#include "Common/GL/GLInterfaceBase.h"
 #include "Common/Logging/Log.h"
 
 #if defined(__linux__) || defined(__APPLE__)
@@ -2148,12 +2148,11 @@ const GLFunc gl_function_array[] = {
 namespace GLExtensions
 {
 // Private members and functions
-static bool _isES;
-static u32 _GLVersion;
-static std::unordered_map<std::string, bool> m_extension_list;
+static u32 s_gl_version;
+static std::unordered_map<std::string, bool> s_extension_list;
 
 // Private initialization functions
-bool InitFunctionPointers();
+bool InitFunctionPointers(GLContext* context);
 
 // Initializes the extension list the old way
 static void InitExtensionList21()
@@ -2163,28 +2162,28 @@ static void InitExtensionList21()
   std::istringstream buffer(tmp);
 
   while (buffer >> tmp)
-    m_extension_list[tmp] = true;
+    s_extension_list[tmp] = true;
 }
 
-static void InitExtensionList()
+static void InitExtensionList(GLContext* context)
 {
-  m_extension_list.clear();
-  if (_isES)
+  s_extension_list.clear();
+  if (context->IsGLES())
   {
-    switch (_GLVersion)
+    switch (s_gl_version)
     {
     default:
     case 320:
-      m_extension_list["VERSION_GLES_3_2"] = true;
+      s_extension_list["VERSION_GLES_3_2"] = true;
     case 310:
-      m_extension_list["VERSION_GLES_3_1"] = true;
+      s_extension_list["VERSION_GLES_3_1"] = true;
     case 300:
-      m_extension_list["VERSION_GLES_3"] = true;
+      s_extension_list["VERSION_GLES_3"] = true;
       break;
     }
 
     // We always have ES 2.0
-    m_extension_list["VERSION_GLES_2"] = true;
+    s_extension_list["VERSION_GLES_2"] = true;
   }
   else
   {
@@ -2194,7 +2193,7 @@ static void InitExtensionList()
     // When an extension got merged in to core, the naming may have changed
 
     // This has intentional fall through
-    switch (_GLVersion)
+    switch (s_gl_version)
     {
     default:
     case 450:
@@ -2213,7 +2212,7 @@ static void InitExtensionList()
           "VERSION_4_5",
       };
       for (auto it : gl450exts)
-        m_extension_list[it] = true;
+        s_extension_list[it] = true;
     }
     case 440:
     {
@@ -2229,7 +2228,7 @@ static void InitExtensionList()
           "VERSION_4_4",
       };
       for (auto it : gl440exts)
-        m_extension_list[it] = true;
+        s_extension_list[it] = true;
     }
     case 430:
     {
@@ -2257,7 +2256,7 @@ static void InitExtensionList()
           "VERSION_4_3",
       };
       for (auto it : gl430exts)
-        m_extension_list[it] = true;
+        s_extension_list[it] = true;
     }
     case 420:
     {
@@ -2277,7 +2276,7 @@ static void InitExtensionList()
           "VERSION_4_2",
       };
       for (auto it : gl420exts)
-        m_extension_list[it] = true;
+        s_extension_list[it] = true;
     }
     case 410:
     {
@@ -2291,7 +2290,7 @@ static void InitExtensionList()
           "VERSION_4_1",
       };
       for (auto it : gl410exts)
-        m_extension_list[it] = true;
+        s_extension_list[it] = true;
     }
     case 400:
     {
@@ -2311,7 +2310,7 @@ static void InitExtensionList()
           "VERSION_4_0",
       };
       for (auto it : gl400exts)
-        m_extension_list[it] = true;
+        s_extension_list[it] = true;
     }
     case 330:
     {
@@ -2329,7 +2328,7 @@ static void InitExtensionList()
           "VERSION_3_3",
       };
       for (auto it : gl330exts)
-        m_extension_list[it] = true;
+        s_extension_list[it] = true;
     }
     case 320:
     {
@@ -2346,7 +2345,7 @@ static void InitExtensionList()
           "VERSION_3_2",
       };
       for (auto it : gl320exts)
-        m_extension_list[it] = true;
+        s_extension_list[it] = true;
     }
     case 310:
     {
@@ -2361,7 +2360,7 @@ static void InitExtensionList()
           "VERSION_3_1",
       };
       for (auto it : gl310exts)
-        m_extension_list[it] = true;
+        s_extension_list[it] = true;
     }
     case 300:
     {
@@ -2392,7 +2391,7 @@ static void InitExtensionList()
           "VERSION_3_0",
       };
       for (auto it : gl300exts)
-        m_extension_list[it] = true;
+        s_extension_list[it] = true;
     }
     case 210:
     case 200:
@@ -2406,10 +2405,10 @@ static void InitExtensionList()
       break;
     }
     // So we can easily determine if we are running dekstop GL
-    m_extension_list["VERSION_GL"] = true;
+    s_extension_list["VERSION_GL"] = true;
   }
 
-  if (_GLVersion < 300)
+  if (s_gl_version < 300)
   {
     InitExtensionList21();
     return;
@@ -2417,7 +2416,7 @@ static void InitExtensionList()
   GLint NumExtension = 0;
   glGetIntegerv(GL_NUM_EXTENSIONS, &NumExtension);
   for (GLint i = 0; i < NumExtension; ++i)
-    m_extension_list[std::string((const char*)glGetStringi(GL_EXTENSIONS, i))] = true;
+    s_extension_list[std::string((const char*)glGetStringi(GL_EXTENSIONS, i))] = true;
 }
 static void InitVersion()
 {
@@ -2425,14 +2424,14 @@ static void InitVersion()
   glGetIntegerv(GL_MAJOR_VERSION, &major);
   glGetIntegerv(GL_MINOR_VERSION, &minor);
   if (glGetError() == GL_NO_ERROR)
-    _GLVersion = major * 100 + minor * 10;
+    s_gl_version = major * 100 + minor * 10;
   else
-    _GLVersion = 210;
+    s_gl_version = 210;
 }
 
-static void* GetFuncAddress(const std::string& name, void** func)
+static void* GetFuncAddress(GLContext* context, const std::string& name, void** func)
 {
-  *func = GLInterface->GetFuncAddress(name);
+  *func = context->GetFuncAddress(name);
   if (*func == nullptr)
   {
 #if defined(__linux__) || defined(__APPLE__)
@@ -2448,37 +2447,36 @@ static void* GetFuncAddress(const std::string& name, void** func)
 // Public members
 u32 Version()
 {
-  return _GLVersion;
+  return s_gl_version;
 }
 bool Supports(const std::string& name)
 {
-  return m_extension_list[name];
+  return s_extension_list[name];
 }
 
-bool Init()
+bool Init(GLContext* context)
 {
-  _isES = GLInterface->GetMode() != GLInterfaceMode::MODE_OPENGL;
-
   // Grab a few functions for initial checking
   // We need them to grab the extension list
   // Also to check if there is an error grabbing the version
-  if (GetFuncAddress("glGetIntegerv", (void**)&glGetIntegerv) == nullptr)
+  if (GetFuncAddress(context, "glGetIntegerv", (void**)&glGetIntegerv) == nullptr)
     return false;
-  if (GetFuncAddress("glGetString", (void**)&glGetString) == nullptr)
+  if (GetFuncAddress(context, "glGetString", (void**)&glGetString) == nullptr)
     return false;
-  if (GetFuncAddress("glGetError", (void**)&glGetError) == nullptr)
+  if (GetFuncAddress(context, "glGetError", (void**)&glGetError) == nullptr)
     return false;
 
   InitVersion();
 
   // We need to use glGetStringi to get the extension list
   // if we are using GLES3 or a GL version greater than 2.1
-  if (_GLVersion > 210 && GetFuncAddress("glGetStringi", (void**)&glGetStringi) == nullptr)
+  if (s_gl_version > 210 &&
+      GetFuncAddress(context, "glGetStringi", (void**)&glGetStringi) == nullptr)
     return false;
 
-  InitExtensionList();
+  InitExtensionList(context);
 
-  return InitFunctionPointers();
+  return InitFunctionPointers(context);
 }
 
 // Private initialization functions
@@ -2491,20 +2489,20 @@ static bool HasFeatures(const std::string& extensions)
   while (buffer >> tmp)
   {
     if (tmp[0] == '!')
-      result &= !m_extension_list[tmp.erase(0, 1)];
+      result &= !s_extension_list[tmp.erase(0, 1)];
     else if (tmp[0] == '|')
-      result |= m_extension_list[tmp.erase(0, 1)];
+      result |= s_extension_list[tmp.erase(0, 1)];
     else
-      result &= m_extension_list[tmp];
+      result &= s_extension_list[tmp];
   }
   return result;
 }
-bool InitFunctionPointers()
+bool InitFunctionPointers(GLContext* context)
 {
   bool result = true;
   for (const auto& it : gl_function_array)
     if (HasFeatures(it.requirements))
-      result &= !!GetFuncAddress(it.function_name, it.function_ptr);
+      result &= !!GetFuncAddress(context, it.function_name, it.function_ptr);
   return result;
 }
-}
+}  // namespace GLExtensions
diff --git a/Source/Core/Common/GL/GLExtensions/GLExtensions.h b/Source/Core/Common/GL/GLExtensions/GLExtensions.h
index 2c0364da48..f1e258f98e 100644
--- a/Source/Core/Common/GL/GLExtensions/GLExtensions.h
+++ b/Source/Core/Common/GL/GLExtensions/GLExtensions.h
@@ -54,10 +54,12 @@
 #include "Common/GL/GLExtensions/gl_4_4.h"
 #include "Common/GL/GLExtensions/gl_4_5.h"
 
+class GLContext;
+
 namespace GLExtensions
 {
 // Initializes the interface
-bool Init();
+bool Init(GLContext* context);
 
 // Function for checking if the hardware supports an extension
 // example: if (GLExtensions::Supports("GL_ARB_multi_map"))
@@ -65,4 +67,4 @@ bool Supports(const std::string& name);
 
 // Returns OpenGL version in format 430
 u32 Version();
-}
+}  // namespace GLExtensions
diff --git a/Source/Core/Common/GL/GLInterface/AGL.h b/Source/Core/Common/GL/GLInterface/AGL.h
index 8d62086954..59d0116954 100644
--- a/Source/Core/Common/GL/GLInterface/AGL.h
+++ b/Source/Core/Common/GL/GLInterface/AGL.h
@@ -12,22 +12,28 @@ struct NSOpenGLPixelFormat;
 struct NSView;
 #endif
 
-#include "Common/GL/GLInterfaceBase.h"
+#include "Common/GL/GLContext.h"
 
-class cInterfaceAGL : public cInterfaceBase
+class GLContextAGL final : public GLContext
 {
 public:
-  void Swap() override;
-  bool Create(void* window_handle, bool stereo, bool core) override;
-  bool Create(cInterfaceBase* main_context) override;
+  ~GLContextAGL() override;
+
+  bool IsHeadless() const override;
+
+  std::unique_ptr<GLContext> CreateSharedContext() override;
+
   bool MakeCurrent() override;
   bool ClearCurrent() override;
-  void Shutdown() override;
+
   void Update() override;
+
+  void Swap() override;
   void SwapInterval(int interval) override;
-  std::unique_ptr<cInterfaceBase> CreateSharedContext() override;
 
-private:
+protected:
+  bool Initialize(void* display_handle, void* window_handle, bool stereo, bool core) override;
+
   NSView* m_view = nullptr;
   NSOpenGLContext* m_context = nullptr;
   NSOpenGLPixelFormat* m_pixel_format = nullptr;
diff --git a/Source/Core/Common/GL/GLInterface/AGL.mm b/Source/Core/Common/GL/GLInterface/AGL.mm
index 07502475f7..7216946dae 100644
--- a/Source/Core/Common/GL/GLInterface/AGL.mm
+++ b/Source/Core/Common/GL/GLInterface/AGL.mm
@@ -10,16 +10,15 @@ static bool UpdateCachedDimensions(NSView* view, u32* width, u32* height)
   NSWindow* window = [view window];
   NSSize size = [view frame].size;
 
-  float scale = [window backingScaleFactor];
-  size.width *= scale;
-  size.height *= scale;
+  const CGFloat scale = [window backingScaleFactor];
+  u32 new_width = static_cast<u32>(size.width * scale);
+  u32 new_height = static_cast<u32>(size.height * scale);
 
-  if (*width == size.width && *height == size.height)
+  if (*width == new_width && *height == new_height)
     return false;
 
-  *width = size.width;
-  *height = size.height;
-
+  *width = new_width;
+  *height = new_height;
   return true;
 }
 
@@ -44,14 +43,33 @@ static bool AttachContextToView(NSOpenGLContext* context, NSView* view, u32* wid
   return true;
 }
 
-void cInterfaceAGL::Swap()
+GLContextAGL::~GLContextAGL()
+{
+  if ([NSOpenGLContext currentContext] == m_context)
+    [NSOpenGLContext clearCurrentContext];
+
+  if (m_context)
+  {
+    [m_context clearDrawable];
+    [m_context release];
+  }
+  if (m_pixel_format)
+    [m_pixel_format release];
+}
+
+bool GLContextAGL::IsHeadless() const
+{
+  return !m_view;
+}
+
+void GLContextAGL::Swap()
 {
   [m_context flushBuffer];
 }
 
 // Create rendering window.
 // Call browser: Core.cpp:EmuThread() > main.cpp:Video_Initialize()
-bool cInterfaceAGL::Create(void* window_handle, bool stereo, bool core)
+bool GLContextAGL::Initialize(void* display_handle, void* window_handle, bool stereo, bool core)
 {
   NSOpenGLPixelFormatAttribute attr[] = {
       NSOpenGLPFADoubleBuffer,
@@ -78,65 +96,54 @@ bool cInterfaceAGL::Create(void* window_handle, bool stereo, bool core)
     return true;
 
   m_view = static_cast<NSView*>(window_handle);
-  return AttachContextToView(m_context, m_view, &s_backbuffer_width, &s_backbuffer_height);
-}
-
-bool cInterfaceAGL::Create(cInterfaceBase* main_context)
-{
-  cInterfaceAGL* agl_context = static_cast<cInterfaceAGL*>(main_context);
-  NSOpenGLPixelFormat* pixel_format = agl_context->m_pixel_format;
-  NSOpenGLContext* share_context = agl_context->m_context;
-
-  m_context = [[NSOpenGLContext alloc] initWithFormat:pixel_format shareContext:share_context];
-  if (m_context == nil)
-  {
-    ERROR_LOG(VIDEO, "failed to create shared context");
+  m_opengl_mode = Mode::OpenGL;
+  if (!AttachContextToView(m_context, m_view, &m_backbuffer_width, &m_backbuffer_height))
     return false;
-  }
 
+  [m_context makeCurrentContext];
   return true;
 }
 
-std::unique_ptr<cInterfaceBase> cInterfaceAGL::CreateSharedContext()
+std::unique_ptr<GLContext> GLContextAGL::CreateSharedContext()
 {
-  std::unique_ptr<cInterfaceBase> context = std::make_unique<cInterfaceAGL>();
-  if (!context->Create(this))
+  NSOpenGLContext* new_agl_context =
+      [[NSOpenGLContext alloc] initWithFormat:m_pixel_format shareContext:m_context];
+  if (new_agl_context == nil)
+  {
+    ERROR_LOG(VIDEO, "failed to create shared context");
     return nullptr;
-  return context;
+  }
+
+  std::unique_ptr<GLContextAGL> new_context = std::make_unique<GLContextAGL>();
+  new_context->m_context = new_agl_context;
+  new_context->m_pixel_format = m_pixel_format;
+  [new_context->m_pixel_format retain];
+  new_context->m_is_shared = true;
+  return new_context;
 }
 
-bool cInterfaceAGL::MakeCurrent()
+bool GLContextAGL::MakeCurrent()
 {
   [m_context makeCurrentContext];
   return true;
 }
 
-bool cInterfaceAGL::ClearCurrent()
+bool GLContextAGL::ClearCurrent()
 {
   [NSOpenGLContext clearCurrentContext];
   return true;
 }
 
-// Close backend
-void cInterfaceAGL::Shutdown()
-{
-  [m_context clearDrawable];
-  [m_context release];
-  m_context = nil;
-  [m_pixel_format release];
-  m_pixel_format = nil;
-}
-
-void cInterfaceAGL::Update()
+void GLContextAGL::Update()
 {
   if (!m_view)
     return;
 
-  if (UpdateCachedDimensions(m_view, &s_backbuffer_width, &s_backbuffer_height))
+  if (UpdateCachedDimensions(m_view, &m_backbuffer_width, &m_backbuffer_height))
     [m_context update];
 }
 
-void cInterfaceAGL::SwapInterval(int interval)
+void GLContextAGL::SwapInterval(int interval)
 {
   [m_context setValues:static_cast<GLint*>(&interval) forParameter:NSOpenGLCPSwapInterval];
 }
diff --git a/Source/Core/Common/GL/GLInterface/BGL.cpp b/Source/Core/Common/GL/GLInterface/BGL.cpp
deleted file mode 100644
index ed2670efc5..0000000000
--- a/Source/Core/Common/GL/GLInterface/BGL.cpp
+++ /dev/null
@@ -1,70 +0,0 @@
-// Copyright 2017 Dolphin Emulator Project
-// Licensed under GPLv2+
-// Refer to the license.txt file included.
-
-#include "Common/GL/GLInterface/BGL.h"
-
-#include <GLView.h>
-#include <Size.h>
-#include <Window.h>
-
-void cInterfaceBGL::Swap()
-{
-  m_gl->SwapBuffers();
-}
-
-bool cInterfaceBGL::Create(void* window_handle, bool stereo, bool core)
-{
-  m_window = static_cast<BWindow*>(window_handle);
-
-  m_gl = new BGLView(m_window->Bounds(), "cInterfaceBGL", B_FOLLOW_ALL_SIDES, 0,
-                     BGL_RGB | BGL_DOUBLE | BGL_ALPHA);
-  m_window->AddChild(m_gl);
-
-  s_opengl_mode = GLInterfaceMode::MODE_OPENGL;
-
-  // Control m_window size and picture scaling
-  BRect size = m_gl->Frame();
-  s_backbuffer_width = size.IntegerWidth();
-  s_backbuffer_height = size.IntegerHeight();
-
-  return true;
-}
-
-bool cInterfaceBGL::MakeCurrent()
-{
-  m_gl->LockGL();
-  return true;
-}
-
-bool cInterfaceBGL::ClearCurrent()
-{
-  m_gl->UnlockGL();
-  return true;
-}
-
-void cInterfaceBGL::Shutdown()
-{
-  // We don't need to delete m_gl, it's owned by the BWindow.
-  m_gl = nullptr;
-}
-
-void cInterfaceBGL::Update()
-{
-  BRect size = m_gl->Frame();
-
-  if (s_backbuffer_width == size.IntegerWidth() && s_backbuffer_height == size.IntegerHeight())
-    return;
-
-  s_backbuffer_width = size.IntegerWidth();
-  s_backbuffer_height = size.IntegerHeight();
-}
-
-void cInterfaceBGL::SwapInterval(int interval)
-{
-}
-
-void* cInterfaceBGL::GetFuncAddress(const std::string& name)
-{
-  return m_gl->GetGLProcAddress(name.c_str());
-}
diff --git a/Source/Core/Common/GL/GLInterface/BGL.h b/Source/Core/Common/GL/GLInterface/BGL.h
deleted file mode 100644
index b26e5e3fc8..0000000000
--- a/Source/Core/Common/GL/GLInterface/BGL.h
+++ /dev/null
@@ -1,27 +0,0 @@
-// Copyright 2017 Dolphin Emulator Project
-// Licensed under GPLv2+
-// Refer to the license.txt file included.
-
-#pragma once
-
-#include "Common/GL/GLInterfaceBase.h"
-
-class BWindow;
-class BGLView;
-
-class cInterfaceBGL final : public cInterfaceBase
-{
-public:
-  void Swap() override;
-  void* GetFuncAddress(const std::string& name) override;
-  bool Create(void* window_handle, bool stereo, bool core) override;
-  bool MakeCurrent() override;
-  bool ClearCurrent() override;
-  void Shutdown() override;
-  void Update() override;
-  void SwapInterval(int interval) override;
-
-private:
-  BWindow* m_window;
-  BGLView* m_gl;
-};
diff --git a/Source/Core/Common/GL/GLInterface/EGL.cpp b/Source/Core/Common/GL/GLInterface/EGL.cpp
index e71b365928..93a60ca9d8 100644
--- a/Source/Core/Common/GL/GLInterface/EGL.cpp
+++ b/Source/Core/Common/GL/GLInterface/EGL.cpp
@@ -9,7 +9,6 @@
 
 #include "Common/GL/GLInterface/EGL.h"
 #include "Common/Logging/Log.h"
-#include "Core/Config/GraphicsSettings.h"
 
 #ifndef EGL_KHR_create_context
 #define EGL_KHR_create_context 1
@@ -28,35 +27,37 @@
 #define EGL_OPENGL_ES3_BIT_KHR 0x00000040
 #endif /* EGL_KHR_create_context */
 
-// Show the current FPS
-void cInterfaceEGL::Swap()
+GLContextEGL::~GLContextEGL()
 {
-  if (egl_surf != EGL_NO_SURFACE)
-    eglSwapBuffers(egl_dpy, egl_surf);
+  DestroyWindowSurface();
+  DestroyContext();
 }
-void cInterfaceEGL::SwapInterval(int Interval)
+
+bool GLContextEGL::IsHeadless() const
 {
-  eglSwapInterval(egl_dpy, Interval);
+  return m_host_window == nullptr;
 }
 
-void* cInterfaceEGL::GetFuncAddress(const std::string& name)
+void GLContextEGL::Swap()
 {
-  return (void*)eglGetProcAddress(name.c_str());
+  if (m_egl_surface != EGL_NO_SURFACE)
+    eglSwapBuffers(m_egl_display, m_egl_surface);
+}
+void GLContextEGL::SwapInterval(int interval)
+{
+  eglSwapInterval(m_egl_display, interval);
 }
 
-void cInterfaceEGL::DetectMode()
+void* GLContextEGL::GetFuncAddress(const std::string& name)
 {
-  if (s_opengl_mode != GLInterfaceMode::MODE_DETECT)
-    return;
-  bool preferGLES = Config::Get(Config::GFX_PREFER_GLES);
+  return (void*)eglGetProcAddress(name.c_str());
+}
 
+void GLContextEGL::DetectMode(bool has_handle)
+{
   EGLint num_configs;
-  bool supportsGL = false, supportsGLES2 = false, supportsGLES3 = false;
-  std::array<int, 3> renderable_types{{
-      EGL_OPENGL_BIT,
-      (1 << 6), /* EGL_OPENGL_ES3_BIT_KHR */
-      EGL_OPENGL_ES2_BIT,
-  }};
+  bool supportsGL = false, supportsGLES3 = false;
+  std::array<int, 3> renderable_types{{EGL_OPENGL_BIT, EGL_OPENGL_ES3_BIT_KHR}};
 
   for (auto renderable_type : renderable_types)
   {
@@ -71,11 +72,11 @@ void cInterfaceEGL::DetectMode()
                      EGL_RENDERABLE_TYPE,
                      renderable_type,
                      EGL_SURFACE_TYPE,
-                     m_has_handle ? EGL_WINDOW_BIT : 0,
+                     has_handle ? EGL_WINDOW_BIT : 0,
                      EGL_NONE};
 
     // Get how many configs there are
-    if (!eglChooseConfig(egl_dpy, attribs, nullptr, 0, &num_configs))
+    if (!eglChooseConfig(m_egl_display, attribs, nullptr, 0, &num_configs))
     {
       INFO_LOG(VIDEO, "Error: couldn't get an EGL visual config");
       continue;
@@ -84,7 +85,7 @@ void cInterfaceEGL::DetectMode()
     EGLConfig* config = new EGLConfig[num_configs];
 
     // Get all the configurations
-    if (!eglChooseConfig(egl_dpy, attribs, config, num_configs, &num_configs))
+    if (!eglChooseConfig(m_egl_display, attribs, config, num_configs, &num_configs))
     {
       INFO_LOG(VIDEO, "Error: couldn't get an EGL visual config");
       delete[] config;
@@ -95,80 +96,68 @@ void cInterfaceEGL::DetectMode()
     {
       EGLint attribVal;
       bool ret;
-      ret = eglGetConfigAttrib(egl_dpy, config[i], EGL_RENDERABLE_TYPE, &attribVal);
+      ret = eglGetConfigAttrib(m_egl_display, config[i], EGL_RENDERABLE_TYPE, &attribVal);
       if (ret)
       {
         if (attribVal & EGL_OPENGL_BIT)
           supportsGL = true;
-        if (attribVal & (1 << 6)) /* EGL_OPENGL_ES3_BIT_KHR */
+        if (attribVal & EGL_OPENGL_ES3_BIT_KHR)
           supportsGLES3 = true;
-        if (attribVal & EGL_OPENGL_ES2_BIT)
-          supportsGLES2 = true;
       }
     }
     delete[] config;
   }
 
-  if (preferGLES)
-  {
-    if (supportsGLES3)
-      s_opengl_mode = GLInterfaceMode::MODE_OPENGLES3;
-    else if (supportsGLES2)
-      s_opengl_mode = GLInterfaceMode::MODE_OPENGLES2;
-    else if (supportsGL)
-      s_opengl_mode = GLInterfaceMode::MODE_OPENGL;
-  }
-  else
-  {
-    if (supportsGL)
-      s_opengl_mode = GLInterfaceMode::MODE_OPENGL;
-    else if (supportsGLES3)
-      s_opengl_mode = GLInterfaceMode::MODE_OPENGLES3;
-    else if (supportsGLES2)
-      s_opengl_mode = GLInterfaceMode::MODE_OPENGLES2;
-  }
-
-  if (s_opengl_mode == GLInterfaceMode::MODE_OPENGL)
+  if (supportsGL)
   {
     INFO_LOG(VIDEO, "Using OpenGL");
+    m_opengl_mode = Mode::OpenGL;
   }
-  else if (s_opengl_mode == GLInterfaceMode::MODE_OPENGLES3)
-  {
-    INFO_LOG(VIDEO, "Using OpenGL|ES 3");
-  }
-  else if (s_opengl_mode == GLInterfaceMode::MODE_OPENGLES2)
+  else if (supportsGLES3)
   {
-    INFO_LOG(VIDEO, "Using OpenGL|ES 2");
+    INFO_LOG(VIDEO, "Using OpenGL|ES");
+    m_opengl_mode = Mode::OpenGLES;
   }
-  else if (s_opengl_mode == GLInterfaceMode::MODE_DETECT)
+  else
   {
     // Errored before we found a mode
     ERROR_LOG(VIDEO, "Error: Failed to detect OpenGL flavour, falling back to OpenGL");
     // This will fail to create a context, as it'll try to use the same attribs we just failed to
     // find a matching config with
-    s_opengl_mode = GLInterfaceMode::MODE_OPENGL;
+    m_opengl_mode = Mode::OpenGL;
   }
 }
 
+EGLDisplay GLContextEGL::OpenEGLDisplay()
+{
+  return eglGetDisplay(EGL_DEFAULT_DISPLAY);
+}
+
+EGLNativeWindowType GLContextEGL::GetEGLNativeWindow(EGLConfig config)
+{
+  return reinterpret_cast<EGLNativeWindowType>(EGL_DEFAULT_DISPLAY);
+}
+
 // Create rendering window.
 // Call browser: Core.cpp:EmuThread() > main.cpp:Video_Initialize()
-bool cInterfaceEGL::Create(void* window_handle, bool stereo, bool core)
+bool GLContextEGL::Initialize(void* display_handle, void* window_handle, bool stereo, bool core)
 {
+  const bool has_handle = !!window_handle;
+
   EGLint egl_major, egl_minor;
   bool supports_core_profile = false;
 
-  egl_dpy = OpenDisplay();
-  m_host_window = (EGLNativeWindowType)window_handle;
-  m_has_handle = !!window_handle;
-  m_core = core;
+  m_host_display = display_handle;
+  m_host_window = window_handle;
+  m_egl_display = OpenEGLDisplay();
 
-  if (!egl_dpy)
+  if (!m_egl_display)
   {
     INFO_LOG(VIDEO, "Error: eglGetDisplay() failed");
     return false;
   }
 
-  if (!eglInitialize(egl_dpy, &egl_major, &egl_minor))
+  if (!eglInitialize(m_egl_display, &egl_major, &egl_minor))
   {
     INFO_LOG(VIDEO, "Error: eglInitialize() failed");
     return false;
@@ -177,12 +166,13 @@ bool cInterfaceEGL::Create(void* window_handle, bool stereo, bool core)
   /* Detection code */
   EGLint num_configs;
 
-  DetectMode();
+  if (m_opengl_mode == Mode::Detect)
+    DetectMode(has_handle);
 
   // attributes for a visual in RGBA format with at least
   // 8 bits per color
   int attribs[] = {EGL_RENDERABLE_TYPE,
-                   EGL_OPENGL_ES2_BIT,
+                   0,
                    EGL_RED_SIZE,
                    8,
                    EGL_GREEN_SIZE,
@@ -190,43 +180,38 @@ bool cInterfaceEGL::Create(void* window_handle, bool stereo, bool core)
                    EGL_BLUE_SIZE,
                    8,
                    EGL_SURFACE_TYPE,
-                   m_has_handle ? EGL_WINDOW_BIT : 0,
+                   has_handle ? EGL_WINDOW_BIT : 0,
                    EGL_NONE};
 
   std::vector<EGLint> ctx_attribs;
-  switch (s_opengl_mode)
+  switch (m_opengl_mode)
   {
-  case GLInterfaceMode::MODE_OPENGL:
+  case Mode::OpenGL:
     attribs[1] = EGL_OPENGL_BIT;
     ctx_attribs = {EGL_NONE};
     break;
-  case GLInterfaceMode::MODE_OPENGLES2:
-    attribs[1] = EGL_OPENGL_ES2_BIT;
-    ctx_attribs = {EGL_CONTEXT_CLIENT_VERSION, 2, EGL_NONE};
-    break;
-  case GLInterfaceMode::MODE_OPENGLES3:
-    attribs[1] = (1 << 6); /* EGL_OPENGL_ES3_BIT_KHR */
+  case Mode::OpenGLES:
+    attribs[1] = EGL_OPENGL_ES3_BIT_KHR;
     ctx_attribs = {EGL_CONTEXT_CLIENT_VERSION, 3, EGL_NONE};
     break;
   default:
     ERROR_LOG(VIDEO, "Unknown opengl mode set");
     return false;
-    break;
   }
 
-  if (!eglChooseConfig(egl_dpy, attribs, &m_config, 1, &num_configs))
+  if (!eglChooseConfig(m_egl_display, attribs, &m_config, 1, &num_configs))
   {
     INFO_LOG(VIDEO, "Error: couldn't get an EGL visual config");
     return false;
   }
 
-  if (s_opengl_mode == GLInterfaceMode::MODE_OPENGL)
+  if (m_opengl_mode == Mode::OpenGL)
     eglBindAPI(EGL_OPENGL_API);
   else
     eglBindAPI(EGL_OPENGL_ES_API);
 
   std::string tmp;
-  std::istringstream buffer(eglQueryString(egl_dpy, EGL_EXTENSIONS));
+  std::istringstream buffer(eglQueryString(m_egl_display, EGL_EXTENSIONS));
   while (buffer >> tmp)
   {
     if (tmp == "EGL_KHR_surfaceless_context")
@@ -235,19 +220,9 @@ bool cInterfaceEGL::Create(void* window_handle, bool stereo, bool core)
       supports_core_profile = true;
   }
 
-  if (supports_core_profile && core && s_opengl_mode == GLInterfaceMode::MODE_OPENGL)
+  if (supports_core_profile && core && m_opengl_mode == Mode::OpenGL)
   {
-    std::array<std::pair<int, int>, 7> versions_to_try = {{
-        {4, 5},
-        {4, 4},
-        {4, 3},
-        {4, 2},
-        {4, 1},
-        {4, 0},
-        {3, 3},
-    }};
-
-    for (const auto& version : versions_to_try)
+    for (const auto& version : s_desktop_opengl_versions)
     {
       std::vector<EGLint> core_attribs = {EGL_CONTEXT_MAJOR_VERSION_KHR,
                                           version.first,
@@ -259,8 +234,8 @@ bool cInterfaceEGL::Create(void* window_handle, bool stereo, bool core)
                                           EGL_CONTEXT_OPENGL_FORWARD_COMPATIBLE_BIT_KHR,
                                           EGL_NONE};
 
-      egl_ctx = eglCreateContext(egl_dpy, m_config, EGL_NO_CONTEXT, &core_attribs[0]);
-      if (egl_ctx)
+      m_egl_context = eglCreateContext(m_egl_display, m_config, EGL_NO_CONTEXT, &core_attribs[0]);
+      if (m_egl_context)
       {
         m_attribs = std::move(core_attribs);
         break;
@@ -268,14 +243,13 @@ bool cInterfaceEGL::Create(void* window_handle, bool stereo, bool core)
     }
   }
 
-  if (!egl_ctx)
+  if (!m_egl_context)
   {
-    m_core = false;
-    egl_ctx = eglCreateContext(egl_dpy, m_config, EGL_NO_CONTEXT, &ctx_attribs[0]);
+    m_egl_context = eglCreateContext(m_egl_display, m_config, EGL_NO_CONTEXT, &ctx_attribs[0]);
     m_attribs = std::move(ctx_attribs);
   }
 
-  if (!egl_ctx)
+  if (!m_egl_context)
   {
     INFO_LOG(VIDEO, "Error: eglCreateContext failed");
     return false;
@@ -286,56 +260,45 @@ bool cInterfaceEGL::Create(void* window_handle, bool stereo, bool core)
     ERROR_LOG(VIDEO, "Error: CreateWindowSurface failed 0x%04x", eglGetError());
     return false;
   }
-  return true;
-}
 
-std::unique_ptr<cInterfaceBase> cInterfaceEGL::CreateSharedContext()
-{
-  std::unique_ptr<cInterfaceBase> context = std::make_unique<cInterfaceEGL>();
-  if (!context->Create(this))
-    return nullptr;
-  return context;
+  return MakeCurrent();
 }
 
-bool cInterfaceEGL::Create(cInterfaceBase* main_context)
+std::unique_ptr<GLContext> GLContextEGL::CreateSharedContext()
 {
-  cInterfaceEGL* egl_context = static_cast<cInterfaceEGL*>(main_context);
-
-  egl_dpy = egl_context->egl_dpy;
-  m_core = egl_context->m_core;
-  m_config = egl_context->m_config;
-  m_supports_surfaceless = egl_context->m_supports_surfaceless;
-  m_is_shared = true;
-  m_has_handle = false;
-
-  if (egl_context->GetMode() == GLInterfaceMode::MODE_OPENGL)
-    eglBindAPI(EGL_OPENGL_API);
-  else
-    eglBindAPI(EGL_OPENGL_ES_API);
-
-  egl_ctx =
-      eglCreateContext(egl_dpy, m_config, egl_context->egl_ctx, egl_context->m_attribs.data());
-  if (!egl_ctx)
+  eglBindAPI(m_opengl_mode == Mode::OpenGL ? EGL_OPENGL_API : EGL_OPENGL_ES_API);
+  EGLContext new_egl_context =
+      eglCreateContext(m_egl_display, m_config, m_egl_context, m_attribs.data());
+  if (!new_egl_context)
   {
     INFO_LOG(VIDEO, "Error: eglCreateContext failed 0x%04x", eglGetError());
-    return false;
+    return nullptr;
   }
 
-  if (!CreateWindowSurface())
+  std::unique_ptr<GLContextEGL> new_context = std::make_unique<GLContextEGL>();
+  new_context->m_opengl_mode = m_opengl_mode;
+  new_context->m_egl_context = new_egl_context;
+  new_context->m_host_display = m_host_display;
+  new_context->m_egl_display = m_egl_display;
+  new_context->m_config = m_config;
+  new_context->m_supports_surfaceless = m_supports_surfaceless;
+  new_context->m_is_shared = true;
+  if (!new_context->CreateWindowSurface())
   {
     ERROR_LOG(VIDEO, "Error: CreateWindowSurface failed 0x%04x", eglGetError());
-    return false;
+    return nullptr;
   }
-  return true;
+
+  return new_context;
 }
 
-bool cInterfaceEGL::CreateWindowSurface()
+bool GLContextEGL::CreateWindowSurface()
 {
-  if (m_has_handle)
+  if (m_host_window)
   {
-    EGLNativeWindowType native_window = InitializePlatform(m_host_window, m_config);
-    egl_surf = eglCreateWindowSurface(egl_dpy, m_config, native_window, nullptr);
-    if (!egl_surf)
+    EGLNativeWindowType native_window = GetEGLNativeWindow(m_config);
+    m_egl_surface = eglCreateWindowSurface(m_egl_display, m_config, native_window, nullptr);
+    if (!m_egl_surface)
     {
       INFO_LOG(VIDEO, "Error: eglCreateWindowSurface failed");
       return false;
@@ -346,8 +309,8 @@ bool cInterfaceEGL::CreateWindowSurface()
     EGLint attrib_list[] = {
         EGL_NONE,
     };
-    egl_surf = eglCreatePbufferSurface(egl_dpy, m_config, attrib_list);
-    if (!egl_surf)
+    m_egl_surface = eglCreatePbufferSurface(m_egl_display, m_config, attrib_list);
+    if (!m_egl_surface)
     {
       INFO_LOG(VIDEO, "Error: eglCreatePbufferSurface failed");
       return false;
@@ -355,56 +318,54 @@ bool cInterfaceEGL::CreateWindowSurface()
   }
   else
   {
-    egl_surf = EGL_NO_SURFACE;
+    m_egl_surface = EGL_NO_SURFACE;
   }
   return true;
 }
 
-void cInterfaceEGL::DestroyWindowSurface()
+void GLContextEGL::DestroyWindowSurface()
 {
-  if (egl_surf != EGL_NO_SURFACE && !eglDestroySurface(egl_dpy, egl_surf))
-    NOTICE_LOG(VIDEO, "Could not destroy window surface.");
-  egl_surf = EGL_NO_SURFACE;
-}
+  if (m_egl_surface == EGL_NO_SURFACE)
+    return;
 
-bool cInterfaceEGL::MakeCurrent()
-{
-  return eglMakeCurrent(egl_dpy, egl_surf, egl_surf, egl_ctx);
+  if (eglGetCurrentSurface(EGL_DRAW) == m_egl_surface)
+    eglMakeCurrent(m_egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
+  if (!eglDestroySurface(m_egl_display, m_egl_surface))
+    NOTICE_LOG(VIDEO, "Could not destroy window surface.");
+  m_egl_surface = EGL_NO_SURFACE;
 }
 
-void cInterfaceEGL::UpdateHandle(void* window_handle)
+bool GLContextEGL::MakeCurrent()
 {
-  m_host_window = (EGLNativeWindowType)window_handle;
-  m_has_handle = !!window_handle;
+  return eglMakeCurrent(m_egl_display, m_egl_surface, m_egl_surface, m_egl_context);
 }
 
-void cInterfaceEGL::UpdateSurface()
+void GLContextEGL::UpdateSurface(void* window_handle)
 {
+  m_host_window = window_handle;
   ClearCurrent();
   DestroyWindowSurface();
   CreateWindowSurface();
   MakeCurrent();
 }
 
-bool cInterfaceEGL::ClearCurrent()
+bool GLContextEGL::ClearCurrent()
 {
-  return eglMakeCurrent(egl_dpy, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
+  return eglMakeCurrent(m_egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
 }
 
 // Close backend
-void cInterfaceEGL::Shutdown()
+void GLContextEGL::DestroyContext()
 {
-  ShutdownPlatform();
-  if (egl_ctx)
-  {
-    if (!eglMakeCurrent(egl_dpy, egl_surf, egl_surf, egl_ctx))
-      NOTICE_LOG(VIDEO, "Could not release drawing context.");
-    eglMakeCurrent(egl_dpy, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
-    if (!eglDestroyContext(egl_dpy, egl_ctx))
-      NOTICE_LOG(VIDEO, "Could not destroy drawing context.");
-    DestroyWindowSurface();
-    if (!m_is_shared && !eglTerminate(egl_dpy))
-      NOTICE_LOG(VIDEO, "Could not destroy display connection.");
-    egl_ctx = nullptr;
-  }
+  if (!m_egl_context)
+    return;
+
+  if (eglGetCurrentContext() == m_egl_context)
+    eglMakeCurrent(m_egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
+  if (!eglDestroyContext(m_egl_display, m_egl_context))
+    NOTICE_LOG(VIDEO, "Could not destroy drawing context.");
+  if (!m_is_shared && !eglTerminate(m_egl_display))
+    NOTICE_LOG(VIDEO, "Could not destroy display connection.");
+  m_egl_context = EGL_NO_CONTEXT;
+  m_egl_display = EGL_NO_DISPLAY;
 }
diff --git a/Source/Core/Common/GL/GLInterface/EGL.h b/Source/Core/Common/GL/GLInterface/EGL.h
index 79c623c942..51dd3fda35 100644
--- a/Source/Core/Common/GL/GLInterface/EGL.h
+++ b/Source/Core/Common/GL/GLInterface/EGL.h
@@ -9,44 +9,46 @@
 #include <string>
 #include <vector>
 
-#include "Common/GL/GLInterfaceBase.h"
+#include "Common/GL/GLContext.h"
 
-class cInterfaceEGL : public cInterfaceBase
+class GLContextEGL : public GLContext
 {
-private:
-  EGLConfig m_config;
-  bool m_has_handle;
-  EGLNativeWindowType m_host_window;
-  bool m_supports_surfaceless = false;
-  std::vector<int> m_attribs;
+public:
+  virtual ~GLContextEGL() override;
 
-  bool CreateWindowSurface();
-  void DestroyWindowSurface();
+  bool IsHeadless() const override;
 
-protected:
-  void DetectMode();
-  EGLSurface egl_surf;
-  EGLContext egl_ctx;
-  EGLDisplay egl_dpy;
-
-  virtual EGLDisplay OpenDisplay() { return eglGetDisplay(EGL_DEFAULT_DISPLAY); }
-  virtual EGLNativeWindowType InitializePlatform(EGLNativeWindowType host_window, EGLConfig config)
-  {
-    return (EGLNativeWindowType)EGL_DEFAULT_DISPLAY;
-  }
-  virtual void ShutdownPlatform() {}
+  std::unique_ptr<GLContext> CreateSharedContext() override;
+
+  bool MakeCurrent() override;
+  bool ClearCurrent() override;
+
+  void UpdateSurface(void* window_handle) override;
 
-public:
   void Swap() override;
   void SwapInterval(int interval) override;
-  void SetMode(GLInterfaceMode mode) override { s_opengl_mode = mode; }
+
   void* GetFuncAddress(const std::string& name) override;
-  bool Create(void* window_handle, bool stereo, bool core) override;
-  bool Create(cInterfaceBase* main_context) override;
-  bool MakeCurrent() override;
-  bool ClearCurrent() override;
-  void Shutdown() override;
-  void UpdateHandle(void* window_handle) override;
-  void UpdateSurface() override;
-  std::unique_ptr<cInterfaceBase> CreateSharedContext() override;
+
+protected:
+  virtual EGLDisplay OpenEGLDisplay();
+  virtual EGLNativeWindowType GetEGLNativeWindow(EGLConfig config);
+
+  bool Initialize(void* display_handle, void* window_handle, bool stereo, bool core) override;
+
+  bool CreateWindowSurface();
+  void DestroyWindowSurface();
+  void DetectMode(bool has_handle);
+  void DestroyContext();
+
+  void* m_host_display = nullptr;
+  void* m_host_window = nullptr;
+
+  EGLConfig m_config;
+  bool m_supports_surfaceless = false;
+  std::vector<int> m_attribs;
+
+  EGLSurface m_egl_surface = EGL_NO_SURFACE;
+  EGLContext m_egl_context = EGL_NO_CONTEXT;
+  EGLDisplay m_egl_display = EGL_NO_DISPLAY;
 };
diff --git a/Source/Core/Common/GL/GLInterface/EGLAndroid.cpp b/Source/Core/Common/GL/GLInterface/EGLAndroid.cpp
index 44fb41f1d2..2a5123b21f 100644
--- a/Source/Core/Common/GL/GLInterface/EGLAndroid.cpp
+++ b/Source/Core/Common/GL/GLInterface/EGLAndroid.cpp
@@ -3,26 +3,19 @@
 // Refer to the license.txt file included.
 
 #include "Common/GL/GLInterface/EGLAndroid.h"
+#include <android/native_window.h>
 
-EGLDisplay cInterfaceEGLAndroid::OpenDisplay()
+EGLDisplay GLContextEGLAndroid::OpenEGLDisplay()
 {
   return eglGetDisplay(EGL_DEFAULT_DISPLAY);
 }
 
-EGLNativeWindowType cInterfaceEGLAndroid::InitializePlatform(EGLNativeWindowType host_window,
-                                                             EGLConfig config)
+EGLNativeWindowType GLContextEGLAndroid::GetEGLNativeWindow(EGLConfig config)
 {
   EGLint format;
-  eglGetConfigAttrib(egl_dpy, config, EGL_NATIVE_VISUAL_ID, &format);
-  ANativeWindow_setBuffersGeometry(host_window, 0, 0, format);
-
-  const int width = ANativeWindow_getWidth(host_window);
-  const int height = ANativeWindow_getHeight(host_window);
-  GLInterface->SetBackBufferDimensions(width, height);
-
-  return host_window;
-}
-
-void cInterfaceEGLAndroid::ShutdownPlatform()
-{
+  eglGetConfigAttrib(m_egl_display, config, EGL_NATIVE_VISUAL_ID, &format);
+  ANativeWindow_setBuffersGeometry(static_cast<ANativeWindow*>(m_host_window), 0, 0, format);
+  m_backbuffer_width = ANativeWindow_getWidth(static_cast<ANativeWindow*>(m_host_window));
+  m_backbuffer_height = ANativeWindow_getHeight(static_cast<ANativeWindow*>(m_host_window));
+  return static_cast<EGLNativeWindowType>(m_host_window);
 }
diff --git a/Source/Core/Common/GL/GLInterface/EGLAndroid.h b/Source/Core/Common/GL/GLInterface/EGLAndroid.h
index 8a43f261c9..f743f2fb32 100644
--- a/Source/Core/Common/GL/GLInterface/EGLAndroid.h
+++ b/Source/Core/Common/GL/GLInterface/EGLAndroid.h
@@ -4,14 +4,11 @@
 
 #pragma once
 
-#include <android/native_window.h>
 #include "Common/GL/GLInterface/EGL.h"
 
-class cInterfaceEGLAndroid : public cInterfaceEGL
+class GLContextEGLAndroid final : public GLContextEGL
 {
 protected:
-  EGLDisplay OpenDisplay() override;
-  EGLNativeWindowType InitializePlatform(EGLNativeWindowType host_window,
-                                         EGLConfig config) override;
-  void ShutdownPlatform() override;
+  EGLDisplay OpenEGLDisplay() override;
+  EGLNativeWindowType GetEGLNativeWindow(EGLConfig config) override;
 };
diff --git a/Source/Core/Common/GL/GLInterface/EGLHaiku.cpp b/Source/Core/Common/GL/GLInterface/EGLHaiku.cpp
deleted file mode 100644
index 253b9c8c98..0000000000
--- a/Source/Core/Common/GL/GLInterface/EGLHaiku.cpp
+++ /dev/null
@@ -1,30 +0,0 @@
-// Copyright 2017 Dolphin Emulator Project
-// Licensed under GPLv2+
-// Refer to the license.txt file included.
-
-#include "Common/GL/GLInterface/EGLHaiku.h"
-
-#include <Window.h>
-
-EGLDisplay cInterfaceEGLHaiku::OpenDisplay()
-{
-  return eglGetDisplay(EGL_DEFAULT_DISPLAY);
-}
-
-EGLNativeWindowType cInterfaceEGLHaiku::InitializePlatform(EGLNativeWindowType host_window,
-                                                           EGLConfig config)
-{
-  EGLint format;
-  eglGetConfigAttrib(egl_dpy, config, EGL_NATIVE_VISUAL_ID, &format);
-
-  BWindow* window = reinterpret_cast<BWindow*>(host_window);
-  const int width = window->Size().width;
-  const int height = window->Size().height;
-  GLInterface->SetBackBufferDimensions(width, height);
-
-  return host_window;
-}
-
-void cInterfaceEGLHaiku::ShutdownPlatform()
-{
-}
diff --git a/Source/Core/Common/GL/GLInterface/EGLHaiku.h b/Source/Core/Common/GL/GLInterface/EGLHaiku.h
deleted file mode 100644
index fc755963df..0000000000
--- a/Source/Core/Common/GL/GLInterface/EGLHaiku.h
+++ /dev/null
@@ -1,16 +0,0 @@
-// Copyright 2017 Dolphin Emulator Project
-// Licensed under GPLv2+
-// Refer to the license.txt file included.
-
-#pragma once
-
-#include "Common/GL/GLInterface/EGL.h"
-
-class cInterfaceEGLHaiku final : public cInterfaceEGL
-{
-protected:
-  EGLDisplay OpenDisplay() override;
-  EGLNativeWindowType InitializePlatform(EGLNativeWindowType host_window,
-                                         EGLConfig config) override;
-  void ShutdownPlatform() override;
-};
diff --git a/Source/Core/Common/GL/GLInterface/EGLX11.cpp b/Source/Core/Common/GL/GLInterface/EGLX11.cpp
index 432f0aa601..bd59033738 100644
--- a/Source/Core/Common/GL/GLInterface/EGLX11.cpp
+++ b/Source/Core/Common/GL/GLInterface/EGLX11.cpp
@@ -3,43 +3,48 @@
 // Refer to the license.txt file included.
 
 #include "Common/GL/GLInterface/EGLX11.h"
-#include "Common/Logging/Log.h"
 
-EGLDisplay cInterfaceEGLX11::OpenDisplay()
+GLContextEGLX11::~GLContextEGLX11()
 {
-  dpy = XOpenDisplay(nullptr);
-  XWindow.Initialize(dpy);
-  return eglGetDisplay(dpy);
+  // The context must be destroyed before the window.
+  DestroyWindowSurface();
+  DestroyContext();
+  m_render_window.reset();
 }
 
-EGLNativeWindowType cInterfaceEGLX11::InitializePlatform(EGLNativeWindowType host_window,
-                                                         EGLConfig config)
+void GLContextEGLX11::Update()
+{
+  m_render_window->UpdateDimensions();
+  m_backbuffer_width = m_render_window->GetWidth();
+  m_backbuffer_height = m_render_window->GetHeight();
+}
+
+EGLDisplay GLContextEGLX11::OpenEGLDisplay()
+{
+  return eglGetDisplay(static_cast<Display*>(m_host_display));
+}
+
+EGLNativeWindowType GLContextEGLX11::GetEGLNativeWindow(EGLConfig config)
 {
   EGLint vid;
-  eglGetConfigAttrib(egl_dpy, config, EGL_NATIVE_VISUAL_ID, &vid);
+  eglGetConfigAttrib(m_egl_display, config, EGL_NATIVE_VISUAL_ID, &vid);
 
-  XVisualInfo visTemplate;
+  XVisualInfo visTemplate = {};
   visTemplate.visualid = vid;
 
-  XVisualInfo* vi;
   int nVisuals;
-  vi = XGetVisualInfo(dpy, VisualIDMask, &visTemplate, &nVisuals);
+  XVisualInfo* vi =
+      XGetVisualInfo(static_cast<Display*>(m_host_display), VisualIDMask, &visTemplate, &nVisuals);
 
-  XWindowAttributes attribs;
-  if (!XGetWindowAttributes(dpy, (Window)host_window, &attribs))
-  {
-    ERROR_LOG(VIDEO, "Window attribute retrieval failed");
-    return 0;
-  }
+  if (m_render_window)
+    m_render_window.reset();
 
-  s_backbuffer_width = attribs.width;
-  s_backbuffer_height = attribs.height;
+  m_render_window = GLX11Window::Create(static_cast<Display*>(m_host_display),
+                                        reinterpret_cast<Window>(m_host_window), vi);
+  m_backbuffer_width = m_render_window->GetWidth();
+  m_backbuffer_height = m_render_window->GetHeight();
 
-  return (EGLNativeWindowType)XWindow.CreateXWindow((Window)host_window, vi);
-}
+  XFree(vi);
 
-void cInterfaceEGLX11::ShutdownPlatform()
-{
-  XWindow.DestroyXWindow();
-  XCloseDisplay(dpy);
+  return reinterpret_cast<EGLNativeWindowType>(m_render_window->GetWindow());
 }
diff --git a/Source/Core/Common/GL/GLInterface/EGLX11.h b/Source/Core/Common/GL/GLInterface/EGLX11.h
index dab5a38d8e..f4be040fae 100644
--- a/Source/Core/Common/GL/GLInterface/EGLX11.h
+++ b/Source/Core/Common/GL/GLInterface/EGLX11.h
@@ -7,17 +7,18 @@
 #include <X11/Xlib.h>
 
 #include "Common/GL/GLInterface/EGL.h"
-#include "Common/GL/GLInterface/X11_Util.h"
+#include "Common/GL/GLX11Window.h"
 
-class cInterfaceEGLX11 : public cInterfaceEGL
+class GLContextEGLX11 final : public GLContextEGL
 {
-private:
-  cX11Window XWindow;
-  Display* dpy;
+public:
+  ~GLContextEGLX11() override;
+
+  void Update() override;
 
 protected:
-  EGLDisplay OpenDisplay() override;
-  EGLNativeWindowType InitializePlatform(EGLNativeWindowType host_window,
-                                         EGLConfig config) override;
-  void ShutdownPlatform() override;
+  EGLDisplay OpenEGLDisplay() override;
+  EGLNativeWindowType GetEGLNativeWindow(EGLConfig config) override;
+
+  std::unique_ptr<GLX11Window> m_render_window;
 };
diff --git a/Source/Core/Common/GL/GLInterface/GLInterface.cpp b/Source/Core/Common/GL/GLInterface/GLInterface.cpp
deleted file mode 100644
index edd84cc2ab..0000000000
--- a/Source/Core/Common/GL/GLInterface/GLInterface.cpp
+++ /dev/null
@@ -1,50 +0,0 @@
-// Copyright 2014 Dolphin Emulator Project
-// Licensed under GPLv2+
-// Refer to the license.txt file included.
-
-#include <memory>
-
-#include "Common/GL/GLInterfaceBase.h"
-
-#if defined(__APPLE__)
-#include "Common/GL/GLInterface/AGL.h"
-#elif defined(_WIN32)
-#include "Common/GL/GLInterface/WGL.h"
-#elif HAVE_X11
-#if defined(USE_EGL) && USE_EGL
-#include "Common/GL/GLInterface/EGLX11.h"
-#else
-#include "Common/GL/GLInterface/GLX.h"
-#endif
-#elif defined(USE_EGL) && USE_EGL && defined(USE_HEADLESS)
-#include "Common/GL/GLInterface/EGL.h"
-#elif ANDROID
-#include "Common/GL/GLInterface/EGLAndroid.h"
-#elif defined(__HAIKU__)
-#include "Common/GL/GLInterface/BGL.h"
-#else
-#error Platform doesnt have a GLInterface
-#endif
-
-std::unique_ptr<cInterfaceBase> HostGL_CreateGLInterface()
-{
-#if defined(__APPLE__)
-  return std::make_unique<cInterfaceAGL>();
-#elif defined(_WIN32)
-  return std::make_unique<cInterfaceWGL>();
-#elif defined(USE_EGL) && defined(USE_HEADLESS)
-  return std::make_unique<cInterfaceEGL>();
-#elif defined(HAVE_X11) && HAVE_X11
-#if defined(USE_EGL) && USE_EGL
-  return std::make_unique<cInterfaceEGLX11>();
-#else
-  return std::make_unique<cInterfaceGLX>();
-#endif
-#elif ANDROID
-  return std::make_unique<cInterfaceEGLAndroid>();
-#elif defined(__HAIKU__)
-  return std::make_unique<cInterfaceBGL>();
-#else
-  return nullptr;
-#endif
-}
diff --git a/Source/Core/Common/GL/GLInterface/GLX.cpp b/Source/Core/Common/GL/GLInterface/GLX.cpp
index 28714fd20c..c2e4491ff5 100644
--- a/Source/Core/Common/GL/GLInterface/GLX.cpp
+++ b/Source/Core/Common/GL/GLInterface/GLX.cpp
@@ -30,43 +30,57 @@ static int ctxErrorHandler(Display* dpy, XErrorEvent* ev)
   return 0;
 }
 
-void cInterfaceGLX::SwapInterval(int Interval)
+GLContextGLX::~GLContextGLX()
 {
-  if (!m_has_handle)
+  DestroyWindowSurface();
+  if (m_context)
+  {
+    if (glXGetCurrentContext() == m_context)
+      glXMakeCurrent(m_display, None, nullptr);
+
+    glXDestroyContext(m_display, m_context);
+  }
+}
+
+bool GLContextGLX::IsHeadless() const
+{
+  return !m_render_window;
+}
+
+void GLContextGLX::SwapInterval(int Interval)
+{
+  if (!m_drawable)
     return;
 
   // Try EXT_swap_control, then MESA_swap_control.
   if (glXSwapIntervalEXTPtr)
-    glXSwapIntervalEXTPtr(dpy, win, Interval);
+    glXSwapIntervalEXTPtr(m_display, m_drawable, Interval);
   else if (glXSwapIntervalMESAPtr)
     glXSwapIntervalMESAPtr(static_cast<unsigned int>(Interval));
   else
     ERROR_LOG(VIDEO, "No support for SwapInterval (framerate clamped to monitor refresh rate).");
 }
 
-void* cInterfaceGLX::GetFuncAddress(const std::string& name)
+void* GLContextGLX::GetFuncAddress(const std::string& name)
 {
-  return (void*)glXGetProcAddress((const GLubyte*)name.c_str());
+  return reinterpret_cast<void*>(glXGetProcAddress(reinterpret_cast<const GLubyte*>(name.c_str())));
 }
 
-void cInterfaceGLX::Swap()
+void GLContextGLX::Swap()
 {
-  glXSwapBuffers(dpy, win);
+  glXSwapBuffers(m_display, m_drawable);
 }
 
 // Create rendering window.
 // Call browser: Core.cpp:EmuThread() > main.cpp:Video_Initialize()
-bool cInterfaceGLX::Create(void* window_handle, bool stereo, bool core)
+bool GLContextGLX::Initialize(void* display_handle, void* window_handle, bool stereo, bool core)
 {
-  m_has_handle = !!window_handle;
-  m_host_window = (Window)window_handle;
-
-  dpy = XOpenDisplay(nullptr);
-  int screen = DefaultScreen(dpy);
+  m_display = static_cast<Display*>(display_handle);
+  int screen = DefaultScreen(m_display);
 
   // checking glx version
   int glxMajorVersion, glxMinorVersion;
-  glXQueryVersion(dpy, &glxMajorVersion, &glxMinorVersion);
+  glXQueryVersion(m_display, &glxMajorVersion, &glxMinorVersion);
   if (glxMajorVersion < 1 || (glxMajorVersion == 1 && glxMinorVersion < 4))
   {
     ERROR_LOG(VIDEO, "glX-Version %d.%d detected, but need at least 1.4", glxMajorVersion,
@@ -107,54 +121,53 @@ bool cInterfaceGLX::Create(void* window_handle, bool stereo, bool core)
                           stereo ? True : False,
                           None};
   int fbcount = 0;
-  GLXFBConfig* fbc = glXChooseFBConfig(dpy, screen, visual_attribs, &fbcount);
+  GLXFBConfig* fbc = glXChooseFBConfig(m_display, screen, visual_attribs, &fbcount);
   if (!fbc || !fbcount)
   {
     ERROR_LOG(VIDEO, "Failed to retrieve a framebuffer config");
     return false;
   }
-  fbconfig = *fbc;
+  m_fbconfig = *fbc;
   XFree(fbc);
 
   s_glxError = false;
   XErrorHandler oldHandler = XSetErrorHandler(&ctxErrorHandler);
 
   // Create a GLX context.
-  // We try to get a 4.0 core profile, else we try 3.3, else try it with anything we get.
-  std::array<int, 9> context_attribs = {
-      {GLX_CONTEXT_MAJOR_VERSION_ARB, 4, GLX_CONTEXT_MINOR_VERSION_ARB, 0,
-       GLX_CONTEXT_PROFILE_MASK_ARB, GLX_CONTEXT_CORE_PROFILE_BIT_ARB, GLX_CONTEXT_FLAGS_ARB,
-       GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB, None}};
-  ctx = nullptr;
   if (core)
   {
-    ctx = glXCreateContextAttribs(dpy, fbconfig, 0, True, &context_attribs[0]);
-    XSync(dpy, False);
-    m_attribs.insert(m_attribs.end(), context_attribs.begin(), context_attribs.end());
-  }
-  if (core && (!ctx || s_glxError))
-  {
-    std::array<int, 9> context_attribs_33 = {
-        {GLX_CONTEXT_MAJOR_VERSION_ARB, 3, GLX_CONTEXT_MINOR_VERSION_ARB, 3,
-         GLX_CONTEXT_PROFILE_MASK_ARB, GLX_CONTEXT_CORE_PROFILE_BIT_ARB, GLX_CONTEXT_FLAGS_ARB,
-         GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB, None}};
-    s_glxError = false;
-    ctx = glXCreateContextAttribs(dpy, fbconfig, 0, True, &context_attribs_33[0]);
-    XSync(dpy, False);
-    m_attribs.clear();
-    m_attribs.insert(m_attribs.end(), context_attribs_33.begin(), context_attribs_33.end());
+    for (const auto& version : s_desktop_opengl_versions)
+    {
+      std::array<int, 9> context_attribs = {
+          {GLX_CONTEXT_MAJOR_VERSION_ARB, version.first, GLX_CONTEXT_MINOR_VERSION_ARB,
+           version.second, GLX_CONTEXT_PROFILE_MASK_ARB, GLX_CONTEXT_CORE_PROFILE_BIT_ARB,
+           GLX_CONTEXT_FLAGS_ARB, GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB, None}};
+
+      s_glxError = false;
+      m_context = glXCreateContextAttribs(m_display, m_fbconfig, 0, True, &context_attribs[0]);
+      XSync(m_display, False);
+      m_attribs.insert(m_attribs.end(), context_attribs.begin(), context_attribs.end());
+      if (!m_context || s_glxError)
+        continue;
+
+      // Got a context.
+      INFO_LOG(VIDEO, "Created a GLX context with version %d.%d", version.first, version.second);
+      break;
+    }
   }
-  if (!ctx || s_glxError)
+
+  // Failed to create any core contexts, try for anything.
+  if (!m_context || s_glxError)
   {
     std::array<int, 5> context_attribs_legacy = {
         {GLX_CONTEXT_MAJOR_VERSION_ARB, 1, GLX_CONTEXT_MINOR_VERSION_ARB, 0, None}};
     s_glxError = false;
-    ctx = glXCreateContextAttribs(dpy, fbconfig, 0, True, &context_attribs_legacy[0]);
-    XSync(dpy, False);
+    m_context = glXCreateContextAttribs(m_display, m_fbconfig, 0, True, &context_attribs_legacy[0]);
+    XSync(m_display, False);
     m_attribs.clear();
     m_attribs.insert(m_attribs.end(), context_attribs_legacy.begin(), context_attribs_legacy.end());
   }
-  if (!ctx || s_glxError)
+  if (!m_context || s_glxError)
   {
     ERROR_LOG(VIDEO, "Unable to create GL context.");
     XSetErrorHandler(oldHandler);
@@ -168,7 +181,7 @@ bool cInterfaceGLX::Create(void* window_handle, bool stereo, bool core)
   m_supports_pbuffer = false;
 
   std::string tmp;
-  std::istringstream buffer(glXQueryExtensionsString(dpy, screen));
+  std::istringstream buffer(glXQueryExtensionsString(m_display, screen));
   while (buffer >> tmp)
   {
     if (tmp == "GLX_SGIX_pbuffer")
@@ -191,7 +204,7 @@ bool cInterfaceGLX::Create(void* window_handle, bool stereo, bool core)
     }
   }
 
-  if (!CreateWindowSurface())
+  if (!CreateWindowSurface(reinterpret_cast<Window>(window_handle)))
   {
     ERROR_LOG(VIDEO, "Error: CreateWindowSurface failed\n");
     XSetErrorHandler(oldHandler);
@@ -199,119 +212,95 @@ bool cInterfaceGLX::Create(void* window_handle, bool stereo, bool core)
   }
 
   XSetErrorHandler(oldHandler);
-  return true;
+  m_opengl_mode = Mode::OpenGL;
+  return MakeCurrent();
 }
 
-bool cInterfaceGLX::Create(cInterfaceBase* main_context)
+std::unique_ptr<GLContext> GLContextGLX::CreateSharedContext()
 {
-  cInterfaceGLX* glx_context = static_cast<cInterfaceGLX*>(main_context);
-
-  m_has_handle = false;
-  m_supports_pbuffer = glx_context->m_supports_pbuffer;
-  dpy = glx_context->dpy;
-  fbconfig = glx_context->fbconfig;
   s_glxError = false;
   XErrorHandler oldHandler = XSetErrorHandler(&ctxErrorHandler);
 
-  ctx = glXCreateContextAttribs(dpy, fbconfig, glx_context->ctx, True, &glx_context->m_attribs[0]);
-  XSync(dpy, False);
+  GLXContext new_glx_context =
+      glXCreateContextAttribs(m_display, m_fbconfig, m_context, True, &m_attribs[0]);
+  XSync(m_display, False);
 
-  if (!ctx || s_glxError)
+  if (!new_glx_context || s_glxError)
   {
     ERROR_LOG(VIDEO, "Unable to create GL context.");
     XSetErrorHandler(oldHandler);
-    return false;
+    return nullptr;
   }
 
-  if (m_supports_pbuffer && !CreateWindowSurface())
+  std::unique_ptr<GLContextGLX> new_context = std::make_unique<GLContextGLX>();
+  new_context->m_context = new_glx_context;
+  new_context->m_opengl_mode = m_opengl_mode;
+  new_context->m_supports_pbuffer = m_supports_pbuffer;
+  new_context->m_display = m_display;
+  new_context->m_fbconfig = m_fbconfig;
+  new_context->m_is_shared = true;
+
+  if (m_supports_pbuffer && !new_context->CreateWindowSurface(None))
   {
-    ERROR_LOG(VIDEO, "Error: CreateWindowSurface failed\n");
+    ERROR_LOG(VIDEO, "Error: CreateWindowSurface failed");
     XSetErrorHandler(oldHandler);
-    return false;
+    return nullptr;
   }
 
   XSetErrorHandler(oldHandler);
-  return true;
+  return new_context;
 }
 
-std::unique_ptr<cInterfaceBase> cInterfaceGLX::CreateSharedContext()
+bool GLContextGLX::CreateWindowSurface(Window window_handle)
 {
-  std::unique_ptr<cInterfaceBase> context = std::make_unique<cInterfaceGLX>();
-  if (!context->Create(this))
-    return nullptr;
-  return context;
-}
-
-bool cInterfaceGLX::CreateWindowSurface()
-{
-  if (m_has_handle)
+  if (window_handle)
   {
     // Get an appropriate visual
-    XVisualInfo* vi = glXGetVisualFromFBConfig(dpy, fbconfig);
-
-    XWindow.Initialize(dpy);
-
-    XWindowAttributes attribs;
-    if (!XGetWindowAttributes(dpy, m_host_window, &attribs))
-    {
-      ERROR_LOG(VIDEO, "Window attribute retrieval failed");
+    XVisualInfo* vi = glXGetVisualFromFBConfig(m_display, m_fbconfig);
+    m_render_window = GLX11Window::Create(m_display, window_handle, vi);
+    if (!m_render_window)
       return false;
-    }
-
-    s_backbuffer_width = attribs.width;
-    s_backbuffer_height = attribs.height;
 
-    win = XWindow.CreateXWindow(m_host_window, vi);
+    m_backbuffer_width = m_render_window->GetWidth();
+    m_backbuffer_height = m_render_window->GetHeight();
+    m_drawable = static_cast<GLXDrawable>(m_render_window->GetWindow());
     XFree(vi);
   }
   else if (m_supports_pbuffer)
   {
-    win = m_pbuffer = glXCreateGLXPbufferSGIX(dpy, fbconfig, 1, 1, nullptr);
+    m_pbuffer = glXCreateGLXPbufferSGIX(m_display, m_fbconfig, 1, 1, nullptr);
     if (!m_pbuffer)
       return false;
+
+    m_drawable = static_cast<GLXDrawable>(m_pbuffer);
   }
 
   return true;
 }
 
-void cInterfaceGLX::DestroyWindowSurface()
+void GLContextGLX::DestroyWindowSurface()
 {
-  if (m_has_handle)
+  m_render_window.reset();
+  if (m_supports_pbuffer && m_pbuffer)
   {
-    XWindow.DestroyXWindow();
-  }
-  else if (m_supports_pbuffer && m_pbuffer)
-  {
-    glXDestroyGLXPbufferSGIX(dpy, m_pbuffer);
+    glXDestroyGLXPbufferSGIX(m_display, m_pbuffer);
     m_pbuffer = 0;
   }
 }
 
-bool cInterfaceGLX::MakeCurrent()
+bool GLContextGLX::MakeCurrent()
 {
-  return glXMakeCurrent(dpy, win, ctx);
+  return glXMakeCurrent(m_display, m_drawable, m_context);
 }
 
-bool cInterfaceGLX::ClearCurrent()
+bool GLContextGLX::ClearCurrent()
 {
-  return glXMakeCurrent(dpy, None, nullptr);
+  return glXMakeCurrent(m_display, None, nullptr);
 }
 
-// Close backend
-void cInterfaceGLX::Shutdown()
+void GLContextGLX::Update()
 {
-  DestroyWindowSurface();
-  if (ctx)
-  {
-    glXDestroyContext(dpy, ctx);
-
-    // Don't close the display connection if we are a shared context.
-    // Saves doing reference counting on this object, and the main context will always
-    // be shut down last anyway.
-    if (m_has_handle)
-    {
-      XCloseDisplay(dpy);
-      ctx = nullptr;
-    }
-  }
+  m_render_window->UpdateDimensions();
+  m_backbuffer_width = m_render_window->GetWidth();
+  m_backbuffer_height = m_render_window->GetHeight();
 }
diff --git a/Source/Core/Common/GL/GLInterface/GLX.h b/Source/Core/Common/GL/GLInterface/GLX.h
index 724dca5141..1b74e53f60 100644
--- a/Source/Core/Common/GL/GLInterface/GLX.h
+++ b/Source/Core/Common/GL/GLInterface/GLX.h
@@ -10,35 +10,41 @@
 #include <string>
 #include <vector>
 
-#include "Common/GL/GLInterface/X11_Util.h"
-#include "Common/GL/GLInterfaceBase.h"
+#include "Common/GL/GLContext.h"
+#include "Common/GL/GLX11Window.h"
 
-class cInterfaceGLX : public cInterfaceBase
+class GLContextGLX final : public GLContext
 {
-private:
-  Window m_host_window;
-  cX11Window XWindow;
-  Display* dpy;
-  Window win;
-  GLXContext ctx;
-  GLXFBConfig fbconfig;
-  bool m_has_handle;
-  bool m_supports_pbuffer = false;
-  GLXPbufferSGIX m_pbuffer = 0;
-  std::vector<int> m_attribs;
+public:
+  ~GLContextGLX() override;
 
-  bool CreateWindowSurface();
-  void DestroyWindowSurface();
+  bool IsHeadless() const override;
+
+  std::unique_ptr<GLContext> CreateSharedContext() override;
+
+  bool MakeCurrent() override;
+  bool ClearCurrent() override;
+
+  void Update() override;
 
-public:
-  friend class cX11Window;
   void SwapInterval(int Interval) override;
   void Swap() override;
+
   void* GetFuncAddress(const std::string& name) override;
-  bool Create(void* window_handle, bool stereo, bool core) override;
-  bool Create(cInterfaceBase* main_context) override;
-  bool MakeCurrent() override;
-  bool ClearCurrent() override;
-  void Shutdown() override;
-  std::unique_ptr<cInterfaceBase> CreateSharedContext() override;
+
+protected:
+  bool Initialize(void* display_handle, void* window_handle, bool stereo, bool core) override;
+
+  Display* m_display = nullptr;
+  std::unique_ptr<GLX11Window> m_render_window;
+
+  GLXDrawable m_drawable = {};
+  GLXContext m_context = nullptr;
+  GLXFBConfig m_fbconfig = {};
+  bool m_supports_pbuffer = false;
+  GLXPbufferSGIX m_pbuffer = 0;
+  std::vector<int> m_attribs;
+
+  bool CreateWindowSurface(Window window_handle);
+  void DestroyWindowSurface();
 };
diff --git a/Source/Core/Common/GL/GLInterface/WGL.cpp b/Source/Core/Common/GL/GLInterface/WGL.cpp
index 48f4b8c96c..e168f94e51 100644
--- a/Source/Core/Common/GL/GLInterface/WGL.cpp
+++ b/Source/Core/Common/GL/GLInterface/WGL.cpp
@@ -130,8 +130,8 @@ static PFNWGLDESTROYPBUFFERARBPROC wglDestroyPbufferARB = nullptr;
 
 static void LoadWGLExtensions()
 {
-  wglSwapIntervalEXT = reinterpret_cast<PFNWGLSWAPINTERVALEXTPROC>(
-      GLInterface->GetFuncAddress("wglSwapIntervalEXT"));
+  wglSwapIntervalEXT =
+      reinterpret_cast<PFNWGLSWAPINTERVALEXTPROC>(wglGetProcAddress("wglSwapIntervalEXT"));
   wglCreateContextAttribsARB = reinterpret_cast<PFNWGLCREATECONTEXTATTRIBSARBPROC>(
       wglGetProcAddress("wglCreateContextAttribsARB"));
   wglChoosePixelFormatARB = reinterpret_cast<PFNWGLCHOOSEPIXELFORMATARBPROC>(
@@ -157,19 +157,57 @@ static void ClearWGLExtensionPointers()
   wglDestroyPbufferARB = nullptr;
 }
 
-void cInterfaceWGL::SwapInterval(int Interval)
+GLContextWGL::~GLContextWGL()
+{
+  if (m_rc)
+  {
+    if (wglGetCurrentContext() == m_rc && !wglMakeCurrent(m_dc, nullptr))
+      NOTICE_LOG(VIDEO, "Could not release drawing context.");
+
+    if (!wglDeleteContext(m_rc))
+      ERROR_LOG(VIDEO, "Attempt to release rendering context failed.");
+
+    m_rc = nullptr;
+  }
+
+  if (m_dc)
+  {
+    if (m_pbuffer_handle)
+    {
+      wglReleasePbufferDCARB(static_cast<HPBUFFERARB>(m_pbuffer_handle), m_dc);
+      m_dc = nullptr;
+
+      wglDestroyPbufferARB(static_cast<HPBUFFERARB>(m_pbuffer_handle));
+      m_pbuffer_handle = nullptr;
+    }
+    else
+    {
+      if (!ReleaseDC(m_window_handle, m_dc))
+        ERROR_LOG(VIDEO, "Attempt to release device context failed.");
+
+      m_dc = nullptr;
+    }
+  }
+}
+
+bool GLContextWGL::IsHeadless() const
+{
+  return !m_window_handle;
+}
+
+void GLContextWGL::SwapInterval(int interval)
 {
   if (wglSwapIntervalEXT)
-    wglSwapIntervalEXT(Interval);
+    wglSwapIntervalEXT(interval);
   else
     ERROR_LOG(VIDEO, "No support for SwapInterval (framerate clamped to monitor refresh rate).");
 }
-void cInterfaceWGL::Swap()
+void GLContextWGL::Swap()
 {
   SwapBuffers(m_dc);
 }
 
-void* cInterfaceWGL::GetFuncAddress(const std::string& name)
+void* GLContextWGL::GetFuncAddress(const std::string& name)
 {
   FARPROC func = wglGetProcAddress(name.c_str());
   if (func == nullptr)
@@ -183,24 +221,9 @@ void* cInterfaceWGL::GetFuncAddress(const std::string& name)
   return func;
 }
 
-// Draw messages on top of the screen
-bool cInterfaceWGL::PeekMessages()
-{
-  // TODO: peekmessage
-  MSG msg;
-  while (PeekMessage(&msg, 0, 0, 0, PM_REMOVE))
-  {
-    if (msg.message == WM_QUIT)
-      return FALSE;
-    TranslateMessage(&msg);
-    DispatchMessage(&msg);
-  }
-  return TRUE;
-}
-
 // Create rendering window.
 // Call browser: Core.cpp:EmuThread() > main.cpp:Video_Initialize()
-bool cInterfaceWGL::Create(void* window_handle, bool stereo, bool core)
+bool GLContextWGL::Initialize(void* display_handle, void* window_handle, bool stereo, bool core)
 {
   if (!window_handle)
     return false;
@@ -216,8 +239,8 @@ bool cInterfaceWGL::Create(void* window_handle, bool stereo, bool core)
   // Control window size and picture scaling
   int twidth = window_rect.right - window_rect.left;
   int theight = window_rect.bottom - window_rect.top;
-  s_backbuffer_width = twidth;
-  s_backbuffer_height = theight;
+  m_backbuffer_width = twidth;
+  m_backbuffer_height = theight;
 
   const DWORD stereo_flag = stereo ? PFD_STEREO : 0;
 
@@ -274,8 +297,7 @@ bool cInterfaceWGL::Create(void* window_handle, bool stereo, bool core)
   }
 
   // WGL only supports desktop GL, for now.
-  if (s_opengl_mode == GLInterfaceMode::MODE_DETECT)
-    s_opengl_mode = GLInterfaceMode::MODE_OPENGL;
+  m_opengl_mode = Mode::OpenGL;
 
   if (core)
   {
@@ -306,7 +328,6 @@ bool cInterfaceWGL::Create(void* window_handle, bool stereo, bool core)
     {
       wglDeleteContext(m_rc);
       m_rc = core_context;
-      m_core = true;
     }
     else
     {
@@ -314,38 +335,35 @@ bool cInterfaceWGL::Create(void* window_handle, bool stereo, bool core)
     }
   }
 
-  return true;
+  return MakeCurrent();
 }
 
-bool cInterfaceWGL::Create(cInterfaceBase* main_context)
+std::unique_ptr<GLContext> GLContextWGL::CreateSharedContext()
 {
-  cInterfaceWGL* wgl_main_context = static_cast<cInterfaceWGL*>(main_context);
-
   // WGL does not support surfaceless contexts, so we use a 1x1 pbuffer instead.
-  if (!CreatePBuffer(wgl_main_context->m_dc, 1, 1, &m_pbuffer_handle, &m_dc))
-    return false;
-
-  m_rc = CreateCoreContext(m_dc, wgl_main_context->m_rc);
-  if (!m_rc)
-    return false;
-
-  m_core = true;
-  return true;
-}
+  HANDLE pbuffer;
+  HDC dc;
+  if (!CreatePBuffer(m_dc, 1, 1, &pbuffer, &dc))
+    return nullptr;
 
-std::unique_ptr<cInterfaceBase> cInterfaceWGL::CreateSharedContext()
-{
-  std::unique_ptr<cInterfaceWGL> context = std::make_unique<cInterfaceWGL>();
-  if (!context->Create(this))
+  HGLRC rc = CreateCoreContext(dc, m_rc);
+  if (!rc)
   {
-    context->Shutdown();
+    wglReleasePbufferDCARB(static_cast<HPBUFFERARB>(pbuffer), dc);
+    wglDestroyPbufferARB(static_cast<HPBUFFERARB>(pbuffer));
     return nullptr;
   }
 
-  return std::move(context);
+  std::unique_ptr<GLContextWGL> context = std::make_unique<GLContextWGL>();
+  context->m_pbuffer_handle = pbuffer;
+  context->m_dc = dc;
+  context->m_rc = rc;
+  context->m_opengl_mode = m_opengl_mode;
+  context->m_is_shared = true;
+  return context;
 }
 
-HGLRC cInterfaceWGL::CreateCoreContext(HDC dc, HGLRC share_context)
+HGLRC GLContextWGL::CreateCoreContext(HDC dc, HGLRC share_context)
 {
   if (!wglCreateContextAttribsARB)
   {
@@ -353,12 +371,7 @@ HGLRC cInterfaceWGL::CreateCoreContext(HDC dc, HGLRC share_context)
     return nullptr;
   }
 
-  // List of versions to attempt context creation for. (4.5-3.2, geometry shaders is a minimum
-  // requirement since we're using core profile)
-  static constexpr std::array<std::pair<int, int>, 8> try_versions = {
-      {{4, 5}, {4, 4}, {4, 3}, {4, 2}, {4, 1}, {4, 0}, {3, 3}, {3, 2}}};
-
-  for (const auto& version : try_versions)
+  for (const auto& version : s_desktop_opengl_versions)
   {
     // Construct list of attributes. Prefer a forward-compatible, core context.
     std::array<int, 5 * 2> attribs = {WGL_CONTEXT_PROFILE_MASK_ARB,
@@ -402,8 +415,8 @@ HGLRC cInterfaceWGL::CreateCoreContext(HDC dc, HGLRC share_context)
   return nullptr;
 }
 
-bool cInterfaceWGL::CreatePBuffer(HDC onscreen_dc, int width, int height, HANDLE* pbuffer_handle,
-                                  HDC* pbuffer_dc)
+bool GLContextWGL::CreatePBuffer(HDC onscreen_dc, int width, int height, HANDLE* pbuffer_handle,
+                                 HDC* pbuffer_dc)
 {
   if (!wglChoosePixelFormatARB || !wglCreatePbufferARB || !wglGetPbufferDCARB ||
       !wglReleasePbufferDCARB || !wglDestroyPbufferARB)
@@ -462,57 +475,23 @@ bool cInterfaceWGL::CreatePBuffer(HDC onscreen_dc, int width, int height, HANDLE
   return true;
 }
 
-bool cInterfaceWGL::MakeCurrent()
+bool GLContextWGL::MakeCurrent()
 {
   return wglMakeCurrent(m_dc, m_rc) == TRUE;
 }
 
-bool cInterfaceWGL::ClearCurrent()
+bool GLContextWGL::ClearCurrent()
 {
   return wglMakeCurrent(m_dc, nullptr) == TRUE;
 }
 
 // Update window width, size and etc. Called from Render.cpp
-void cInterfaceWGL::Update()
+void GLContextWGL::Update()
 {
   RECT rcWindow;
   GetClientRect(m_window_handle, &rcWindow);
 
   // Get the new window width and height
-  s_backbuffer_width = rcWindow.right - rcWindow.left;
-  s_backbuffer_height = rcWindow.bottom - rcWindow.top;
-}
-
-// Close backend
-void cInterfaceWGL::Shutdown()
-{
-  if (m_rc)
-  {
-    if (!wglMakeCurrent(m_dc, nullptr))
-      NOTICE_LOG(VIDEO, "Could not release drawing context.");
-
-    if (!wglDeleteContext(m_rc))
-      ERROR_LOG(VIDEO, "Attempt to release rendering context failed.");
-
-    m_rc = nullptr;
-  }
-
-  if (m_dc)
-  {
-    if (m_pbuffer_handle)
-    {
-      wglReleasePbufferDCARB(static_cast<HPBUFFERARB>(m_pbuffer_handle), m_dc);
-      m_dc = nullptr;
-
-      wglDestroyPbufferARB(static_cast<HPBUFFERARB>(m_pbuffer_handle));
-      m_pbuffer_handle = nullptr;
-    }
-    else
-    {
-      if (!ReleaseDC(m_window_handle, m_dc))
-        ERROR_LOG(VIDEO, "Attempt to release device context failed.");
-
-      m_dc = nullptr;
-    }
-  }
+  m_backbuffer_width = rcWindow.right - rcWindow.left;
+  m_backbuffer_height = rcWindow.bottom - rcWindow.top;
 }
diff --git a/Source/Core/Common/GL/GLInterface/WGL.h b/Source/Core/Common/GL/GLInterface/WGL.h
index efa9655713..9e3f9d86ef 100644
--- a/Source/Core/Common/GL/GLInterface/WGL.h
+++ b/Source/Core/Common/GL/GLInterface/WGL.h
@@ -6,26 +6,30 @@
 
 #include <windows.h>
 #include <string>
-#include "Common/GL/GLInterfaceBase.h"
+#include "Common/GL/GLContext.h"
 
-class cInterfaceWGL : public cInterfaceBase
+class GLContextWGL final : public GLContext
 {
 public:
-  void SwapInterval(int interval) override;
-  void Swap() override;
-  void* GetFuncAddress(const std::string& name) override;
-  bool Create(void* window_handle, bool stereo, bool core) override;
-  bool Create(cInterfaceBase* main_context) override;
+  ~GLContextWGL();
+
+  bool IsHeadless() const;
+
+  std::unique_ptr<GLContext> CreateSharedContext() override;
+
   bool MakeCurrent() override;
   bool ClearCurrent() override;
-  void Shutdown() override;
 
   void Update() override;
-  bool PeekMessages() override;
 
-  std::unique_ptr<cInterfaceBase> CreateSharedContext() override;
+  void Swap() override;
+  void SwapInterval(int interval) override;
+
+  void* GetFuncAddress(const std::string& name) override;
+
+protected:
+  bool Initialize(void* display_handle, void* window_handle, bool stereo, bool core) override;
 
-private:
   static HGLRC CreateCoreContext(HDC dc, HGLRC share_context);
   static bool CreatePBuffer(HDC onscreen_dc, int width, int height, HANDLE* pbuffer_handle,
                             HDC* pbuffer_dc);
diff --git a/Source/Core/Common/GL/GLInterface/X11_Util.cpp b/Source/Core/Common/GL/GLInterface/X11_Util.cpp
deleted file mode 100644
index ed884a9ffd..0000000000
--- a/Source/Core/Common/GL/GLInterface/X11_Util.cpp
+++ /dev/null
@@ -1,72 +0,0 @@
-// Copyright 2012 Dolphin Emulator Project
-// Licensed under GPLv2+
-// Refer to the license.txt file included.
-
-#include "Common/GL/GLInterface/X11_Util.h"
-#include "Common/GL/GLInterfaceBase.h"
-#include "Common/Logging/Log.h"
-#include "Common/Thread.h"
-
-void cX11Window::Initialize(Display* _dpy)
-{
-  dpy = _dpy;
-}
-
-Window cX11Window::CreateXWindow(Window parent, XVisualInfo* vi)
-{
-  XSetWindowAttributes attr;
-
-  colormap = XCreateColormap(dpy, parent, vi->visual, AllocNone);
-
-  // Setup window attributes
-  attr.colormap = colormap;
-
-  XWindowAttributes attribs;
-  if (!XGetWindowAttributes(dpy, parent, &attribs))
-  {
-    ERROR_LOG(VIDEO, "Window attribute retrieval failed");
-    return 0;
-  }
-
-  // Create the window
-  win = XCreateWindow(dpy, parent, 0, 0, attribs.width, attribs.height, 0, vi->depth, InputOutput,
-                      vi->visual, CWColormap, &attr);
-  XSelectInput(dpy, parent, StructureNotifyMask);
-  XMapWindow(dpy, win);
-  XSync(dpy, True);
-
-  xEventThread = std::thread(&cX11Window::XEventThread, this);
-
-  return win;
-}
-
-void cX11Window::DestroyXWindow(void)
-{
-  XUnmapWindow(dpy, win);
-  win = 0;
-  if (xEventThread.joinable())
-    xEventThread.join();
-  XFreeColormap(dpy, colormap);
-}
-
-void cX11Window::XEventThread()
-{
-  while (win)
-  {
-    XEvent event;
-    for (int num_events = XPending(dpy); num_events > 0; num_events--)
-    {
-      XNextEvent(dpy, &event);
-      switch (event.type)
-      {
-      case ConfigureNotify:
-        XResizeWindow(dpy, win, event.xconfigure.width, event.xconfigure.height);
-        GLInterface->SetBackBufferDimensions(event.xconfigure.width, event.xconfigure.height);
-        break;
-      default:
-        break;
-      }
-    }
-    Common::SleepCurrentThread(20);
-  }
-}
diff --git a/Source/Core/Common/GL/GLInterface/X11_Util.h b/Source/Core/Common/GL/GLInterface/X11_Util.h
deleted file mode 100644
index e79a6fe1df..0000000000
--- a/Source/Core/Common/GL/GLInterface/X11_Util.h
+++ /dev/null
@@ -1,27 +0,0 @@
-// Copyright 2008 Dolphin Emulator Project
-// Licensed under GPLv2+
-// Refer to the license.txt file included.
-
-#pragma once
-
-#include <X11/Xlib.h>
-#include <X11/Xutil.h>
-#include <X11/keysym.h>
-#include <string>
-#include <thread>
-
-class cX11Window
-{
-private:
-  void XEventThread();
-  std::thread xEventThread;
-  Colormap colormap;
-
-public:
-  void Initialize(Display* dpy);
-  Window CreateXWindow(Window parent, XVisualInfo* vi);
-  void DestroyXWindow();
-
-  Display* dpy;
-  Window win;
-};
diff --git a/Source/Core/Common/GL/GLInterfaceBase.h b/Source/Core/Common/GL/GLInterfaceBase.h
deleted file mode 100644
index 4ffb7f5f53..0000000000
--- a/Source/Core/Common/GL/GLInterfaceBase.h
+++ /dev/null
@@ -1,61 +0,0 @@
-// Copyright 2008 Dolphin Emulator Project
-// Licensed under GPLv2+
-// Refer to the license.txt file included.
-
-#pragma once
-
-#include <memory>
-#include <string>
-
-#include "Common/CommonTypes.h"
-
-enum class GLInterfaceMode
-{
-  MODE_DETECT,
-  MODE_OPENGL,
-  MODE_OPENGLES2,
-  MODE_OPENGLES3,
-};
-
-class cInterfaceBase
-{
-protected:
-  // Window dimensions.
-  u32 s_backbuffer_width = 0;
-  u32 s_backbuffer_height = 0;
-  bool m_core = false;
-  bool m_is_shared = false;
-
-  GLInterfaceMode s_opengl_mode = GLInterfaceMode::MODE_DETECT;
-
-public:
-  virtual ~cInterfaceBase() {}
-  virtual void Swap() {}
-  virtual void SetMode(GLInterfaceMode mode) { s_opengl_mode = GLInterfaceMode::MODE_OPENGL; }
-  virtual GLInterfaceMode GetMode() { return s_opengl_mode; }
-  virtual void* GetFuncAddress(const std::string& name) { return nullptr; }
-  virtual bool Create(void* window_handle, bool stereo = false, bool core = true) { return true; }
-  virtual bool Create(cInterfaceBase* main_context) { return true; }
-  virtual bool MakeCurrent() { return true; }
-  virtual bool ClearCurrent() { return true; }
-  virtual void Shutdown() {}
-  virtual void SwapInterval(int Interval) {}
-  virtual u32 GetBackBufferWidth() { return s_backbuffer_width; }
-  virtual u32 GetBackBufferHeight() { return s_backbuffer_height; }
-  virtual void SetBackBufferDimensions(u32 W, u32 H)
-  {
-    s_backbuffer_width = W;
-    s_backbuffer_height = H;
-  }
-  virtual void Update() {}
-  virtual bool PeekMessages() { return false; }
-  virtual void UpdateHandle(void* window_handle) {}
-  virtual void UpdateSurface() {}
-  virtual std::unique_ptr<cInterfaceBase> CreateSharedContext() { return nullptr; }
-};
-
-extern std::unique_ptr<cInterfaceBase> GLInterface;
-
-// This function has to be defined along the Host_ functions from Core/Host.h.
-// Current canonical implementation: DolphinWX/GLInterface/GLInterface.cpp.
-std::unique_ptr<cInterfaceBase> HostGL_CreateGLInterface();
diff --git a/Source/Core/Common/GL/GLUtil.cpp b/Source/Core/Common/GL/GLUtil.cpp
index 02a38d8654..ba0f76b9b0 100644
--- a/Source/Core/Common/GL/GLUtil.cpp
+++ b/Source/Core/Common/GL/GLUtil.cpp
@@ -5,19 +5,12 @@
 #include <memory>
 
 #include "Common/Assert.h"
-#include "Common/GL/GLInterfaceBase.h"
+#include "Common/GL/GLContext.h"
 #include "Common/GL/GLUtil.h"
 #include "Common/Logging/Log.h"
 
-std::unique_ptr<cInterfaceBase> GLInterface;
-
 namespace GLUtil
 {
-void InitInterface()
-{
-  GLInterface = HostGL_CreateGLInterface();
-}
-
 GLuint CompileProgram(const std::string& vertexShader, const std::string& fragmentShader)
 {
   // generate objects
@@ -103,11 +96,11 @@ GLuint CompileProgram(const std::string& vertexShader, const std::string& fragme
   return programID;
 }
 
-void EnablePrimitiveRestart()
+void EnablePrimitiveRestart(const GLContext* context)
 {
   constexpr GLuint PRIMITIVE_RESTART_INDEX = 65535;
 
-  if (GLInterface->GetMode() == GLInterfaceMode::MODE_OPENGLES3)
+  if (context->IsGLES())
   {
     glEnable(GL_PRIMITIVE_RESTART_FIXED_INDEX);
   }
@@ -125,4 +118,4 @@ void EnablePrimitiveRestart()
     }
   }
 }
-}
+}  // namespace GLUtil
diff --git a/Source/Core/Common/GL/GLUtil.h b/Source/Core/Common/GL/GLUtil.h
index d4714026f0..1ec63ebad0 100644
--- a/Source/Core/Common/GL/GLUtil.h
+++ b/Source/Core/Common/GL/GLUtil.h
@@ -8,9 +8,10 @@
 
 #include "Common/GL/GLExtensions/GLExtensions.h"
 
+class GLContext;
+
 namespace GLUtil
 {
-void InitInterface();
 GLuint CompileProgram(const std::string& vertexShader, const std::string& fragmentShader);
-void EnablePrimitiveRestart();
-}
+void EnablePrimitiveRestart(const GLContext* context);
+}  // namespace GLUtil
diff --git a/Source/Core/Common/GL/GLX11Window.cpp b/Source/Core/Common/GL/GLX11Window.cpp
new file mode 100644
index 0000000000..681adaa099
--- /dev/null
+++ b/Source/Core/Common/GL/GLX11Window.cpp
@@ -0,0 +1,53 @@
+// Copyright 2012 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#include "Common/GL/GLX11Window.h"
+#include "Common/GL/GLContext.h"
+
+GLX11Window::GLX11Window(Display* display, Window parent_window, Colormap color_map, Window window,
+                         int width, int height)
+    : m_display(display), m_parent_window(parent_window), m_color_map(color_map), m_window(window),
+      m_width(width), m_height(height)
+{
+}
+
+GLX11Window::~GLX11Window()
+{
+  XUnmapWindow(m_display, m_window);
+  XDestroyWindow(m_display, m_window);
+  XFreeColormap(m_display, m_color_map);
+}
+
+void GLX11Window::UpdateDimensions()
+{
+  XWindowAttributes attribs;
+  XGetWindowAttributes(m_display, m_parent_window, &attribs);
+  XResizeWindow(m_display, m_window, attribs.width, attribs.height);
+  m_width = attribs.width;
+  m_height = attribs.height;
+}
+
+std::unique_ptr<GLX11Window> GLX11Window::Create(Display* display, Window parent_window,
+                                                 XVisualInfo* vi)
+{
+  // Set color map for the new window based on the visual.
+  Colormap color_map = XCreateColormap(display, parent_window, vi->visual, AllocNone);
+  XSetWindowAttributes attribs = {};
+  attribs.colormap = color_map;
+
+  // Get the dimensions from the parent window.
+  XWindowAttributes parent_attribs = {};
+  XGetWindowAttributes(display, parent_window, &parent_attribs);
+
+  // Create the window
+  Window window =
+      XCreateWindow(display, parent_window, 0, 0, parent_attribs.width, parent_attribs.height, 0,
+                    vi->depth, InputOutput, vi->visual, CWColormap, &attribs);
+  XSelectInput(display, parent_window, StructureNotifyMask);
+  XMapWindow(display, window);
+  XSync(display, True);
+
+  return std::make_unique<GLX11Window>(display, parent_window, color_map, window,
+                                       parent_attribs.width, parent_attribs.height);
+}
diff --git a/Source/Core/Common/GL/GLX11Window.h b/Source/Core/Common/GL/GLX11Window.h
new file mode 100644
index 0000000000..fd3020d1d8
--- /dev/null
+++ b/Source/Core/Common/GL/GLX11Window.h
@@ -0,0 +1,39 @@
+// Copyright 2008 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <X11/keysym.h>
+#include <memory>
+#include <thread>
+
+class GLX11Window
+{
+public:
+  GLX11Window(Display* display, Window parent_window, Colormap color_map, Window window, int width,
+              int height);
+  ~GLX11Window();
+
+  Display* GetDisplay() const { return m_display; }
+  Window GetParentWindow() const { return m_parent_window; }
+  Window GetWindow() const { return m_window; }
+  int GetWidth() const { return m_width; }
+  int GetHeight() const { return m_height; }
+
+  void UpdateDimensions();
+
+  static std::unique_ptr<GLX11Window> Create(Display* display, Window parent_window,
+                                             XVisualInfo* vi);
+
+private:
+  Display* m_display;
+  Window m_parent_window;
+  Colormap m_color_map;
+  Window m_window;
+
+  int m_width;
+  int m_height;
+};
diff --git a/Source/Core/Common/WindowSystemInfo.h b/Source/Core/Common/WindowSystemInfo.h
new file mode 100644
index 0000000000..897d034c2c
--- /dev/null
+++ b/Source/Core/Common/WindowSystemInfo.h
@@ -0,0 +1,35 @@
+// Copyright 2018 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#pragma once
+
+enum class WindowSystemType
+{
+  Headless,
+  Windows,
+  MacOS,
+  Android,
+  X11,
+  Wayland
+};
+
+struct WindowSystemInfo
+{
+  WindowSystemInfo() = default;
+  WindowSystemInfo(WindowSystemType type_, void* display_connection_, void* render_surface_)
+      : type(type_), display_connection(display_connection_), render_surface(render_surface_)
+  {
+  }
+
+  // Window system type. Determines which GL context or Vulkan WSI is used.
+  WindowSystemType type = WindowSystemType::Headless;
+
+  // Connection to a display server. This is used on X11 and Wayland platforms.
+  void* display_connection = nullptr;
+
+  // Render surface. This is a pointer to the native window handle, which depends
+  // on the platform. e.g. HWND for Windows, Window for X11. If the surface is
+  // set to nullptr, the video backend will run in headless mode.
+  void* render_surface = nullptr;
+};