exportテーブルにARBないとおもったらwglGetProcAddressでアドレスゲットしないといけないのか

glMultiTexCoord1fARB= (PFNGLMULTITEXCOORD1FARBPROC)wglGetProcAddress("glMultiTexCoord1fARB");
glMultiTexCoord2fARB= (PFNGLMULTITEXCOORD2FARBPROC)wglGetProcAddress("glMultiTexCoord2fARB");
glMultiTexCoord3fARB= (PFNGLMULTITEXCOORD3FARBPROC)wglGetProcAddress("glMultiTexCoord3fARB");
glMultiTexCoord4fARB= (PFNGLMULTITEXCOORD4FARBPROC)wglGetProcAddress("glMultiTexCoord4fARB");
glActiveTextureARB= (PFNGLACTIVETEXTUREARBPROC)wglGetProcAddress("glActiveTextureARB");
glClientActiveTextureARB= (PFNGLCLIENTACTIVETEXTUREARBPROC)wglGetProcAddress("glClientActiveTextureARB");