diff --git a/src/modules/graphic/ssggraph/grshader.cpp b/src/modules/graphic/ssggraph/grshader.cpp
index 2a290e7e..a4c10036 100644
--- a/src/modules/graphic/ssggraph/grshader.cpp
+++ b/src/modules/graphic/ssggraph/grshader.cpp
@@ -71,6 +71,7 @@ PFNGLPROGRAMSTRINGARBPROC glProgramStringARB = NULL;
 PFNGLBINDPROGRAMARBPROC glBindProgramARB = NULL;
 PFNGLDELETEPROGRAMSARBPROC glDeleteProgramsARB = NULL;
 PFNGLGENPROGRAMSARBPROC glGenProgramsARB = NULL;
+PFNGLUSEPROGRAMPROC glUseProgram = NULL;
 PFNGLPROGRAMENVPARAMETER4DARBPROC glProgramEnvParameter4d = NULL;
 PFNGLPROGRAMENVPARAMETER4DVARBPROC glProgramEnvParameter4dv = NULL;
 PFNGLPROGRAMENVPARAMETER4FARBPROC glProgramEnvParameter4f = NULL;
@@ -94,6 +95,11 @@ PFNGLDELETEOBJECTARBPROC glDeleteObject= NULL;
 PFNGLGETHANDLEARBPROC glGetHandle= NULL;
 PFNGLDETACHOBJECTARBPROC glDetachObject= NULL;
 PFNGLCREATESHADEROBJECTARBPROC glCreateShaderObjectARB= NULL;
+PFNGLSHADERSOURCEPROC glShaderSource = NULL;
+PFNGLCOMPILESHADERPROC glCompileShader = NULL;
+PFNGLATTACHSHADERPROC glAttachShader = NULL;
+PFNGLDELETESHADERPROC glDeleteShader = NULL;
+PFNGLLINKPROGRAMPROC glLinkProgram = NULL;
 PFNGLCREATEPROGRAMOBJECTARBPROC glCreateProgramObjectARB= NULL;
 PFNGLATTACHOBJECTARBPROC glAttachObject= NULL;
 PFNGLUSEPROGRAMOBJECTARBPROC glUseProgramObject= NULL;
@@ -123,7 +129,9 @@ PFNGLGETATTACHEDOBJECTSARBPROC glGetAttachedObjects= NULL;
 PFNGLGETACTIVEUNIFORMARBPROC glGetActiveUniform= NULL;
 PFNGLGETUNIFORMFVARBPROC glGetUniformfv= NULL;
 PFNGLGETUNIFORMIVARBPROC glGetUniformiv= NULL;
+PFNGLGETUNIFORMLOCATIONPROC glGetUniformLocation = NULL;
 PFNGLGETSHADERSOURCEARBPROC glGetShaderSource= NULL;
+PFNGLGETPROGRAMINFOLOGPROC glGetProgramInfoLog = NULL;
 
 PFNGLBINDATTRIBLOCATIONARBPROC glBindAttribLocation= NULL;
 PFNGLGETACTIVEATTRIBARBPROC glGetActiveAttrib= NULL;