Lock compositor to 1920x1080

src/main.cpp

@@ -57,6 +57,14 @@ SDL_AppResult SDL_AppInit(void **appstate, int argc, char *argv[])
             "VSync could not be enabled; scrolling text may tear (VSync error: " + std::string(SDL_GetError()) + ")");
     }
 
+    // Lock the renderer to a 1920x1080 logical coordinate space.  All page
+    // layout code already targets this resolution, so everything renders at
+    // the correct size on any display — the GPU scales to native pixels.
+    if (!SDL_SetRenderLogicalPresentation(state->renderer, 1920, 1080, SDL_LOGICAL_PRESENTATION_STRETCH)) {
+        radiantwave::logger::Logger::instance().warning("Graphics",
+            "Could not set logical render size; layout may be wrong on HiDPI displays");
+    }
+
     SDL_HideCursor();
 
     // Initialize configuration, database, and network manager