+ added test triangle rendering

* on close mainloop is ended

KKK/game/include/opengl.h

@@ -0,0 +1,66 @@
+#pragma once
+
+#include <stdexcept>
+#include <X11/X.h>
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <epoxy/gl.h>
+#include <epoxy/glx.h>
+
+namespace endofthejedi {
+
+class GLWindow {
+	private:
+		Display* m_display;
+		Window m_rootwnd;
+		GLint m_attributes[23] =
+    {
+      GLX_DRAWABLE_TYPE, GLX_WINDOW_BIT,
+      GLX_RENDER_TYPE, GLX_RGBA_BIT,
+      GLX_X_VISUAL_TYPE, GLX_TRUE_COLOR,
+      GLX_RED_SIZE, 8,
+      GLX_GREEN_SIZE, 8,
+      GLX_BLUE_SIZE, 8,
+      GLX_ALPHA_SIZE, 8,
+      GLX_DEPTH_SIZE, 24,
+      GLX_STENCIL_SIZE, 8,
+      GLX_DOUBLEBUFFER, True,
+      None
+    };
+
+		XVisualInfo* m_visualinfo;
+		Colormap m_colormap;
+		XSetWindowAttributes m_swa;
+		Window m_window;
+		GLXContext m_glcontext;
+		XWindowAttributes m_gwa;
+    Atom m_atomWmDeleteWindow;
+
+    unsigned int m_width;
+    unsigned int m_height;
+    bool m_running = false;
+
+	protected:
+    virtual void handle(XEvent event);
+    virtual void init();
+    virtual void render(double time);
+    virtual void resize();
+
+ public:
+		GLWindow(unsigned int width, unsigned int height);
+		~GLWindow();
+
+    void loop();
+    void stop();
+    void swap();
+
+    unsigned int getheight() const {
+      return m_height;
+    }
+
+    unsigned int getwidth() const {
+      return m_width;
+    }
+};
+
+}