LibGL: Add context lifetime debug output

Also, make `::create_context` return a `NonnullOwnPtr`.

Userland/Libraries/LibGL/GLContext.cpp

@@ -7,6 +7,7 @@
 
 #include "GLContext.h"
 #include "SoftwareGLContext.h"
+#include <AK/Debug.h>
 #include <LibGfx/Bitmap.h>
 
 __attribute__((visibility("hidden"))) GL::GLContext* g_gl_context;
@@ -15,22 +16,28 @@ namespace GL {
 
 GLContext::~GLContext()
 {
+    dbgln_if(GL_DEBUG, "GLContext::~GLContext() {:p}", this);
     if (g_gl_context == this)
         make_context_current(nullptr);
 }
 
-OwnPtr<GLContext> create_context(Gfx::Bitmap& bitmap)
+NonnullOwnPtr<GLContext> create_context(Gfx::Bitmap& bitmap)
 {
-    auto context = adopt_own(*new SoftwareGLContext(bitmap));
+    auto context = make<SoftwareGLContext>(bitmap);
+    dbgln_if(GL_DEBUG, "GL::create_context({}) -> {:p}", bitmap.size(), context.ptr());
 
     if (!g_gl_context)
-        g_gl_context = context;
+        make_context_current(context);
 
     return context;
 }
 
 void make_context_current(GLContext* context)
 {
+    if (g_gl_context == context)
+        return;
+
+    dbgln_if(GL_DEBUG, "GL::make_context_current({:p})", context);
     g_gl_context = context;
 }
 

Userland/Libraries/LibGL/GLContext.h

@@ -120,7 +120,7 @@ public:
     virtual void present() = 0;
 };
 
-OwnPtr<GLContext> create_context(Gfx::Bitmap&);
+NonnullOwnPtr<GLContext> create_context(Gfx::Bitmap&);
 void make_context_current(GLContext*);
 void present_context(GLContext*);