# OpenGL

Hook OpenGL | HOOKOPENGL | Enables OpenGL API hooking.
Force Hook | FORCEHOOKOPENGL | Experimental – probably unnecessary.
Fix glPixelZoom args | FIXPIXELZOOM | Scales the xfactor and yfactor parameters of the glPixelZoom OpenGL call. Use this flag if the OpenGL screen is not properly scaled to fit the main window.
Fix glBindTexture texture | FIXBINDTEXTURE | Recent OpenGL releases for Windows omit the glActiveTexture function, preventing the application from correctly switching textures. The visible effect is a replication of a single texture instead of the coordinated use of multiple textures to compose a screen.
Hook glut32 | HOOKGLUT32 | This flag hooks the glut32.dll OpenGL extension library to fix issues with some OpenGL games.
Custom OpenGL library |  | By default, DxWnd detects OpenGL APIs within the standard OpenGL32.dll library. This field allows you to set a different filename for any custom OpenGL implementation that may refer to a different library name.