Fix initial x11 context

dgl/Base.hpp

@@ -76,7 +76,9 @@
 #ifdef DISTRHO_OS_MAC
 # include "OpenGL/gl.h"
 #else
+# define GL_GLEXT_PROTOTYPES
 # include "GL/gl.h"
+# include "GL/glext.h"
 #endif
 
 // -----------------------------------------------------------------------

dgl/src/pugl/pugl_x11.c

@@ -147,6 +147,8 @@ puglCreateWindow(PuglView* view, const char* title)
 
 	XFree(vi);
 
+	glXMakeCurrent(view->impl->display, view->impl->win, view->impl->ctx);
+
 	return 0;
 }