set actual framebuffer size after context window creation

Author: Tehsapper

src/limitless/core/context.cpp

@@ -6,12 +6,12 @@ using namespace Limitless;
 
 Context::Context(
     const std::string& title,
-    glm::uvec2 size,
+    glm::uvec2 _size,
     const Context* shared,
     const WindowHints& hints
 ) : ContextInitializer()
   , ContextState()
-  , size {size} {
+  , size {_size} {
     // sets window hints for creation
     for (const auto& [hint, value] : hints) {
         glfwWindowHint(static_cast<int>(hint), value);
@@ -23,6 +23,13 @@ Context::Context(
         throw context_error {"Failed to create window"};
     }
 
+    // The created window, framebuffer and context may differ from what you requested.
+    int framebuffer_width = 0;
+    int framebuffer_height = 0;
+    glfwGetFramebufferSize(window, &framebuffer_width, &framebuffer_height);
+
+    size = glm::uvec2(framebuffer_width, framebuffer_height);
+
     if (!glew_inited) {
         makeCurrent();
         initializeGLEW();