Shadows working but look dumb. The issue so far was that framebuffer.cpp interferes with the framebuffer used to create the shadow map.

33-shadow-mapping/src/framebuffer.cpp

@@ -60,7 +60,7 @@ void FrameBuffer::commit() {
 }
 
 void FrameBuffer::draw(Screen& screen) {
-  glClearColor(1.0f, 0.0f, 0.0f, 1.0f);
+  glClearColor(0.0f, 1.0f, 0.0f, 1.0f);
   glClear(GL_COLOR_BUFFER_BIT);
   glDisable(GL_DEPTH_TEST);