Add back X11 support to EGL

Refactor the EGL backend to provide a platform separation here, which is
better abstracted away than the old EGL/X11 implementation.

Source/Core/DolphinWX/CMakeLists.txt

@@ -74,16 +74,22 @@ set(ANDROID_SRCS Android/ButtonManager.cpp
 
 if(USE_EGL)
 	set(SRCS ${SRCS} GLInterface/EGL.cpp)
-else()
+	if(ANDROID)
+		set(SRCS ${SRCS} GLInterface/EGLAndroid.cpp)
+	elseif(USE_X11)
+		set(SRCS ${SRCS} GLInterface/EGLX11.cpp)
+	endif()
+endif()
+
 if(WIN32)
 	set(SRCS ${SRCS} GLInterface/WGL.cpp)
 elseif(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
 	set(SRCS ${SRCS} GLInterface/AGL.cpp)
-	else()
+elseif(USE_X11)
 	set(SRCS ${SRCS} GLInterface/GLX.cpp
 		GLInterface/X11_Util.cpp)
 endif()
-endif()
+
 set(SRCS ${SRCS} GLInterface/GLInterface.cpp)
 
 set(NOGUI_SRCS MainNoGUI.cpp)

Source/Core/DolphinWX/GLInterface/EGL.cpp

@@ -2,7 +2,6 @@
 // Licensed under GPLv2
 // Refer to the license.txt file included.
 
-#include "Core/Host.h"
 #include "DolphinWX/GLInterface/EGL.h"
 #include "VideoBackends/OGL/GLInterfaceBase.h"
 #include "VideoCommon/RenderBase.h"
@@ -90,7 +89,7 @@ bool cInterfaceEGL::Create(void *window_handle)
 	const char *s;
 	EGLint egl_major, egl_minor;
 
-	egl_dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
+	egl_dpy = OpenDisplay();
 
 	if (!egl_dpy)
 	{
@@ -154,14 +153,8 @@ bool cInterfaceEGL::Create(void *window_handle)
 	else
 		eglBindAPI(EGL_OPENGL_ES_API);
 
-	EGLNativeWindowType native_window = (EGLNativeWindowType) window_handle;
-
-	EGLint format;
-	eglGetConfigAttrib(egl_dpy, config, EGL_NATIVE_VISUAL_ID, &format);
-	ANativeWindow_setBuffersGeometry(native_window, 0, 0, format);
-	int none, width, height;
-	Host_GetRenderWindowSize(none, none, width, height);
-	GLInterface->SetBackBufferDimensions(width, height);
+	EGLNativeWindowType host_window = (EGLNativeWindowType) window_handle;
+	EGLNativeWindowType native_window = InitializePlatform(host_window, config);
 
 	s = eglQueryString(egl_dpy, EGL_VERSION);
 	INFO_LOG(VIDEO, "EGL_VERSION = %s\n", s);
@@ -199,6 +192,7 @@ bool cInterfaceEGL::MakeCurrent()
 // Close backend
 void cInterfaceEGL::Shutdown()
 {
+	ShutdownPlatform();
 	if (egl_ctx && !eglMakeCurrent(egl_dpy, egl_surf, egl_surf, egl_ctx))
 		NOTICE_LOG(VIDEO, "Could not release drawing context.");
 	if (egl_ctx)

Source/Core/DolphinWX/GLInterface/EGL.h

@@ -12,11 +12,15 @@
 
 class cInterfaceEGL : public cInterfaceBase
 {
-private:
+protected:
 	void DetectMode();
 	EGLSurface egl_surf;
 	EGLContext egl_ctx;
 	EGLDisplay egl_dpy;
+
+	virtual EGLDisplay OpenDisplay() = 0;
+	virtual EGLNativeWindowType InitializePlatform(EGLNativeWindowType host_window, EGLConfig config) = 0;
+	virtual void ShutdownPlatform() = 0;
 public:
 	void SwapInterval(int Interval);
 	void Swap();

Source/Core/DolphinWX/GLInterface/EGLAndroid.cpp

@@ -0,0 +1,29 @@
+// Copyright 2014 Dolphin Emulator Project
+// Licensed under GPLv2
+// Refer to the license.txt file included.
+
+#include "Core/Host.h"
+#include "DolphinWX/GLInterface/EGLAndroid.h"
+
+EGLDisplay cInterfaceEGLAndroid::OpenDisplay()
+{
+	return eglGetDisplay(EGL_DEFAULT_DISPLAY);
+}
+
+EGLNativeWindowType cInterfaceEGLAndroid::InitializePlatform(EGLNativeWindowType host_window, EGLConfig config)
+{
+	EGLint format;
+	eglGetConfigAttrib(egl_dpy, config, EGL_NATIVE_VISUAL_ID, &format);
+	ANativeWindow_setBuffersGeometry(host_window, 0, 0, format);
+
+	int none, width, height;
+	Host_GetRenderWindowSize(none, none, width, height);
+	GLInterface->SetBackBufferDimensions(width, height);
+
+	return host_window;
+}
+
+void cInterfaceEGLAndroid::ShutdownPlatform()
+{
+}
+

Source/Core/DolphinWX/GLInterface/EGLAndroid.h

@@ -0,0 +1,15 @@
+// Copyright 2014 Dolphin Emulator Project
+// Licensed under GPLv2
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "DolphinWX/GLInterface/EGL.h"
+
+class cInterfaceEGLAndroid : public cInterfaceEGL
+{
+protected:
+	EGLDisplay OpenDisplay() override;
+	EGLNativeWindowType InitializePlatform(EGLNativeWindowType host_window, EGLConfig config) override;
+	void ShutdownPlatform() override;
+};

Source/Core/DolphinWX/GLInterface/EGLX11.cpp

@@ -0,0 +1,34 @@
+// Copyright 2014 Dolphin Emulator Project
+// Licensed under GPLv2
+// Refer to the license.txt file included.
+
+#include "DolphinWX/GLInterface/EGLX11.h"
+
+EGLDisplay cInterfaceEGLX11::OpenDisplay()
+{
+	dpy = XOpenDisplay(nullptr);
+	XWindow.Initialize(dpy);
+	return eglGetDisplay(dpy);
+}
+
+EGLNativeWindowType cInterfaceEGLX11::InitializePlatform(EGLNativeWindowType host_window, EGLConfig config)
+{
+	EGLint vid;
+	eglGetConfigAttrib(egl_dpy, config, EGL_NATIVE_VISUAL_ID, &vid);
+
+	XVisualInfo visTemplate;
+	visTemplate.visualid = vid;
+
+	XVisualInfo *vi;
+	int nVisuals;
+	vi = XGetVisualInfo(dpy, VisualIDMask, &visTemplate, &nVisuals);
+
+	return (EGLNativeWindowType) XWindow.CreateXWindow((Window) host_window, vi);
+}
+
+void cInterfaceEGLX11::ShutdownPlatform()
+{
+	XWindow.DestroyXWindow();
+	XCloseDisplay(dpy);
+}
+

Source/Core/DolphinWX/GLInterface/EGLX11.h

@@ -0,0 +1,21 @@
+// Copyright 2014 Dolphin Emulator Project
+// Licensed under GPLv2
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <X11/Xlib.h>
+
+#include "DolphinWX/GLInterface/EGL.h"
+#include "DolphinWX/GLInterface/X11_Util.h"
+
+class cInterfaceEGLX11 : public cInterfaceEGL
+{
+private:
+	cX11Window XWindow;
+	Display *dpy;
+protected:
+	EGLDisplay OpenDisplay() override;
+	EGLNativeWindowType InitializePlatform(EGLNativeWindowType host_window, EGLConfig config) override;
+	void ShutdownPlatform() override;
+};

Source/Core/DolphinWX/GLInterface/GLInterface.cpp

@@ -4,28 +4,36 @@
 
 #include "VideoBackends/OGL/GLInterfaceBase.h"
 
-#if USE_EGL
-#include "DolphinWX/GLInterface/EGL.h"
+#ifdef ANDROID
+#include "DolphinWX/GLInterface/EGLAndroid.h"
 #elif defined(__APPLE__)
 #include "DolphinWX/GLInterface/AGL.h"
 #elif defined(_WIN32)
 #include "DolphinWX/GLInterface/WGL.h"
 #elif HAVE_X11
+#if defined(USE_EGL) && USE_EGL
+#include "DolphinWX/GLInterface/EGLX11.h"
+#else
 #include "DolphinWX/GLInterface/GLX.h"
+#endif
 #else
 #error Platform doesnt have a GLInterface
 #endif
 
 cInterfaceBase* HostGL_CreateGLInterface()
 {
-	#if defined(USE_EGL) && USE_EGL
-		return new cInterfaceEGL;
+	#ifdef ANDROID
+		return new cInterfaceEGLAndroid;
 	#elif defined(__APPLE__)
 		return new cInterfaceAGL;
 	#elif defined(_WIN32)
 		return new cInterfaceWGL;
 	#elif defined(HAVE_X11) && HAVE_X11
+	#if defined(USE_EGL) && USE_EGL
+		return new cInterfaceEGLX11;
+	#else
 		return new cInterfaceGLX;
+	#endif
 	#else
 		return nullptr;
 	#endif