message: Hooks aren't present during replay, instead use funcptrs fetched at init
diff: Threading::CriticalSection glLock;
  +typedef BOOL(WINAPI *WGLMAKECURRENTPROC)(HDC, HGLRC);
  +typedef BOOL(WINAPI *WGLDELETECONTEXTPROC)(HGLRC);
  +
  extern PFNWGLCREATECONTEXTATTRIBSARBPROC createContextAttribs;
  extern PFNWGLGETPIXELFORMATATTRIBIVARBPROC getPixelFormatAttrib;
  +extern WGLMAKECURRENTPROC wglMakeCurrentProc;
  +extern WGLDELETECONTEXTPROC wglDeleteRC;
  class OpenGLHook : LibraryHook, public GLPlatform
  {
  @@ -361,6 +366,8 @@ public:
  {
  if(wglMakeCurrent_hook())
  wglMakeCurrent_hook()(data.DC, data.ctx);
  + else if(wglMakeCurrentProc)
  + wglMakeCurrentProc(data.DC, data.ctx);
  }
  GLWindowingData MakeContext(GLWindowingData share)
  @@ -396,10 +403,10 @@ public:
  void DeleteReplayContext(GLWindowingData context)
  {
  - if(wglDeleteContext_hook())
  + if(wglDeleteRC)
  {
  - wglMakeCurrent_hook()(NULL, NULL);
  - wglDeleteContext_hook()(context.ctx);
  + wglMakeCurrentProc(NULL, NULL);
  + wglDeleteRC(context.ctx);
  ReleaseDC(context.wnd, context.DC);
  ::DestroyWindow(context.wnd);
  }
  