Common: Add GL context wrapper implementation

src/common/gl/context_egl.h

@@ -0,0 +1,42 @@
+#pragma once
+#include "context.h"
+#include "glad_egl.h"
+#include "x11_window.h"
+
+namespace GL {
+
+class ContextEGL : public Context
+{
+public:
+  ContextEGL(const WindowInfo& wi);
+  ~ContextEGL() override;
+
+  static std::unique_ptr<Context> Create(const WindowInfo& wi, const Version* versions_to_try,
+                                         size_t num_versions_to_try);
+
+  void* GetProcAddress(const char* name) override;
+  virtual bool ChangeSurface(const WindowInfo& new_wi) override;
+  virtual void ResizeSurface(u32 new_surface_width = 0, u32 new_surface_height = 0) override;
+  bool SwapBuffers() override;
+  bool MakeCurrent() override;
+  bool DoneCurrent() override;
+  bool SetSwapInterval(s32 interval) override;
+  virtual std::unique_ptr<Context> CreateSharedContext(const WindowInfo& wi) override;
+
+protected:
+  virtual EGLNativeWindowType GetNativeWindow(EGLConfig config);
+
+  bool Initialize(const Version* versions_to_try, size_t num_versions_to_try);
+  bool CreateDisplay();
+  bool CreateContext(const Version& version, EGLContext share_context);
+  bool CreateContextAndSurface(const Version& version, EGLContext share_context, bool make_current);
+  bool CreateSurface();
+
+  EGLDisplay m_display = EGL_NO_DISPLAY;
+  EGLSurface m_surface = EGL_NO_SURFACE;
+  EGLContext m_context = EGL_NO_CONTEXT;
+
+  EGLConfig m_config = {};
+};
+
+} // namespace GL