1 files changed, 145 insertions, 0 deletions
diff --git a/Source/Core/VideoBackends/OGL/GLInterface/GLX.cpp b/Source/Core/VideoBackends/OGL/GLInterface/GLX.cpp
new file mode 100644
index 0000000000..12912b0f5d
--- /dev/null
+++ b/Source/Core/VideoBackends/OGL/GLInterface/GLX.cpp
@@ -0,0 +1,145 @@
+// Copyright 2014 Dolphin Emulator Project
+// Licensed under GPLv2
+// Refer to the license.txt file included.
+
+#include <string>
+
+#include "VideoBackends/OGL/GLInterface/GLX.h"
+
+#include "VideoCommon/RenderBase.h"
+#include "VideoCommon/VideoConfig.h"
+
+typedef int ( * PFNGLXSWAPINTERVALSGIPROC) (int interval);
+static PFNGLXSWAPINTERVALSGIPROC glXSwapIntervalSGI = nullptr;
+
+void cInterfaceGLX::SwapInterval(int Interval)
+{
+	if (glXSwapIntervalSGI)
+		glXSwapIntervalSGI(Interval);
+	else
+		ERROR_LOG(VIDEO, "No support for SwapInterval (framerate clamped to monitor refresh rate).");
+}
+void* cInterfaceGLX::GetFuncAddress(const std::string& name)
+{
+	return (void*)glXGetProcAddress((const GLubyte*)name.c_str());
+}
+
+void cInterfaceGLX::Swap()
+{
+	glXSwapBuffers(dpy, win);
+}
+
+// Create rendering window.
+// Call browser: Core.cpp:EmuThread() > main.cpp:Video_Initialize()
+bool cInterfaceGLX::Create(void *window_handle)
+{
+	int glxMajorVersion, glxMinorVersion;
+
+	// attributes for a single buffered visual in RGBA format with at least
+	// 8 bits per color
+	int attrListSgl[] = {GLX_RGBA, GLX_RED_SIZE, 8,
+		GLX_GREEN_SIZE, 8,
+		GLX_BLUE_SIZE, 8,
+		None};
+
+	// attributes for a double buffered visual in RGBA format with at least
+	// 8 bits per color
+	int attrListDbl[] = {GLX_RGBA, GLX_DOUBLEBUFFER,
+		GLX_RED_SIZE, 8,
+		GLX_GREEN_SIZE, 8,
+		GLX_BLUE_SIZE, 8,
+		None };
+
+	int attrListDefault[] = {
+		GLX_RGBA,
+		GLX_RED_SIZE, 1,
+		GLX_GREEN_SIZE, 1,
+		GLX_BLUE_SIZE, 1,
+		GLX_DOUBLEBUFFER,
+		None };
+
+	dpy = XOpenDisplay(nullptr);
+	int screen = DefaultScreen(dpy);
+
+	glXQueryVersion(dpy, &glxMajorVersion, &glxMinorVersion);
+	NOTICE_LOG(VIDEO, "glX-Version %d.%d", glxMajorVersion, glxMinorVersion);
+
+	// Get an appropriate visual
+	vi = glXChooseVisual(dpy, screen, attrListDbl);
+	if (vi == nullptr)
+	{
+		vi = glXChooseVisual(dpy, screen, attrListSgl);
+		if (vi != nullptr)
+		{
+			ERROR_LOG(VIDEO, "Only single buffered visual!");
+		}
+		else
+		{
+			vi = glXChooseVisual(dpy, screen, attrListDefault);
+			if (vi == nullptr)
+			{
+				ERROR_LOG(VIDEO, "Could not choose visual (glXChooseVisual)");
+				return false;
+			}
+		}
+	}
+	else
+	{
+		NOTICE_LOG(VIDEO, "Got double buffered visual!");
+	}
+
+	// Create a GLX context.
+	ctx = glXCreateContext(dpy, vi, nullptr, GL_TRUE);
+	if (!ctx)
+	{
+		PanicAlert("Unable to create GLX context.");
+		return false;
+	}
+
+	XWindow.Initialize(dpy);
+
+	Window parent = (Window)window_handle;
+
+	XWindowAttributes attribs;
+	if (!XGetWindowAttributes(dpy, parent, &attribs))
+	{
+		ERROR_LOG(VIDEO, "Window attribute retrieval failed");
+		return false;
+	}
+
+	s_backbuffer_width  = attribs.width;
+	s_backbuffer_height = attribs.height;
+
+	win = XWindow.CreateXWindow(parent, vi);
+	return true;
+}
+
+bool cInterfaceGLX::MakeCurrent()
+{
+	bool success = glXMakeCurrent(dpy, win, ctx);
+	if (success)
+	{
+		// load this function based on the current bound context
+		glXSwapIntervalSGI = (PFNGLXSWAPINTERVALSGIPROC)GLInterface->GetFuncAddress("glXSwapIntervalSGI");
+	}
+	return success;
+}
+
+bool cInterfaceGLX::ClearCurrent()
+{
+	return glXMakeCurrent(dpy, None, nullptr);
+}
+
+
+// Close backend
+void cInterfaceGLX::Shutdown()
+{
+	XWindow.DestroyXWindow();
+	if (ctx)
+	{
+		glXDestroyContext(dpy, ctx);
+		XCloseDisplay(dpy);
+		ctx = nullptr;
+	}
+}
+