Implement FramebufferStack

src/Rendering/FramebufferStack.cpp

@@ -0,0 +1,34 @@
+#include "FramebufferStack.h"
+
+void FramebufferStack::push(const Ref<Framebuffer>& framebuffer) {
+  stack.push_back(framebuffer);
+  framebuffer->bind();
+}
+
+Ref<Framebuffer> FramebufferStack::peek() const {
+  return empty() ? nullptr : stack.back();
+}
+
+Ref<Framebuffer> FramebufferStack::pop() {
+  assert(!empty());
+
+  Ref<Framebuffer> framebuffer = peek();
+  stack.pop_back();
+
+  auto current = peek();
+  if (current != nullptr) {
+    current->bind();
+  } else {
+    framebuffer->unbind();  // binds the default framebuffer
+  }
+
+  return framebuffer;
+}
+
+bool FramebufferStack::empty() const {
+  return stack.empty();
+}
+
+size_t FramebufferStack::size() const {
+  return stack.size();
+}

src/Rendering/FramebufferStack.h

@@ -0,0 +1,19 @@
+#ifndef FRAMEBUFFERSTACK_H
+#define FRAMEBUFFERSTACK_H
+
+#include "../glCraft.h"
+#include "FrameBuffer.h"
+
+class FramebufferStack {
+  std::vector<Ref<Framebuffer>> stack;
+
+public:
+  void push(const Ref<Framebuffer>& framebuffer);
+  [[nodiscard]] Ref<Framebuffer> peek() const;
+  Ref<Framebuffer> pop();
+
+  [[nodiscard]] bool empty() const;
+  [[nodiscard]] size_t size() const;
+};
+
+#endif