Why hook legitimate overlay DLLs instead of the game's own DX11 swapchain:

Anti-cheat scans often inspect the game's IDXGISwapChain::Present VTable address. If the pointer points outside dxgi.dll, it flags the memory page.

Overlay Hijack Technique:

1. Target Discord (DiscordHook64.dll) or NVIDIA GeForce Experience (GfeSDK.dll).
2. Hook the overlay's internal rendering callback function.
3. Draw your ImGui overlay elements directly inside their backbuffer draw queue.

The game's native DXGI VTables remain 100% pristine and unmodified!

Discord and NVIDIA overlay hooking has been a staple in clean rendering. Keeps the game's DXGI module untouched.

Works with zero flicker on borderless fullscreen.