diff --git a/auto/src/glew_init_gl.c b/auto/src/glew_init_gl.c
index 8d7645f..2ad6c63 100644
--- a/auto/src/glew_init_gl.c
+++ b/auto/src/glew_init_gl.c
@@ -32,76 +32,89 @@ GLenum glewContextInit (GLEW_CONTEXT_ARG_DEF_LIST)
 {
   const GLubyte* s;
   GLuint major, minor;
-  /* query opengl version */
-  s = glGetString(GL_VERSION);
-  if (!s) return GLEW_ERROR_NO_GL_VERSION;
-  major = _glewStrCLen(s, '.')-1;
-  minor = _glewStrCLen(s, '.')+1;
-  
-  if (s+major == NULL
-      || s+minor-1 == NULL || s+minor == NULL
-      || (s[major] == 1 && s[minor] < '1'))
+  /* check for SiS driver */
+  s = glGetString(GL_RENDERER);
+  if (s && _glewStrSame(s,"SiS",3))
   {
-    return GLEW_ERROR_GL_VERSION_10_ONLY;
+	  GLEW_VERSION_1_1 = GL_TRUE;
+      GLEW_VERSION_1_2 = GL_FALSE;
+      GLEW_VERSION_1_3 = GL_FALSE;
+      GLEW_VERSION_1_4 = GL_FALSE;
+      GLEW_VERSION_1_5 = GL_FALSE;
+      GLEW_VERSION_2_0 = GL_FALSE;
   }
   else
   {
-    if (s[major] >= '2')
-    {
-      GLEW_VERSION_1_1 = GL_TRUE;
-      GLEW_VERSION_1_2 = GL_TRUE;
-      GLEW_VERSION_1_3 = GL_TRUE;
-      GLEW_VERSION_1_4 = GL_TRUE;
-      GLEW_VERSION_1_5 = GL_TRUE;
-      GLEW_VERSION_2_0 = GL_TRUE;
-    }
-    else
-    {
-      if (s[minor] >= '5')
-      {
-        GLEW_VERSION_1_1 = GL_TRUE;
-        GLEW_VERSION_1_2 = GL_TRUE;
-        GLEW_VERSION_1_3 = GL_TRUE;
-        GLEW_VERSION_1_4 = GL_TRUE;
-        GLEW_VERSION_1_5 = GL_TRUE;
-        GLEW_VERSION_2_0 = GL_FALSE;
-      }
-      if (s[minor] == '4')
-      {
-        GLEW_VERSION_1_1 = GL_TRUE;
-        GLEW_VERSION_1_2 = GL_TRUE;
-        GLEW_VERSION_1_3 = GL_TRUE;
-        GLEW_VERSION_1_4 = GL_TRUE;
-        GLEW_VERSION_1_5 = GL_FALSE;
-        GLEW_VERSION_2_0 = GL_FALSE;
-      }
-      if (s[minor] == '3')
-      {
-        GLEW_VERSION_1_1 = GL_TRUE;
-        GLEW_VERSION_1_2 = GL_TRUE;
-        GLEW_VERSION_1_3 = GL_TRUE;
-        GLEW_VERSION_1_4 = GL_FALSE;
-        GLEW_VERSION_1_5 = GL_FALSE;
-        GLEW_VERSION_2_0 = GL_FALSE;
-      }
-      if (s[minor] == '2')
-      {
-        GLEW_VERSION_1_1 = GL_TRUE;
-        GLEW_VERSION_1_2 = GL_TRUE;
-        GLEW_VERSION_1_3 = GL_FALSE;
-        GLEW_VERSION_1_4 = GL_FALSE;
-        GLEW_VERSION_1_5 = GL_FALSE;
-        GLEW_VERSION_2_0 = GL_FALSE;
-      }
-      if (s[minor] < '2')
-      {
-        GLEW_VERSION_1_1 = GL_TRUE;
-        GLEW_VERSION_1_2 = GL_FALSE;
-        GLEW_VERSION_1_3 = GL_FALSE;
-        GLEW_VERSION_1_4 = GL_FALSE;
-        GLEW_VERSION_1_5 = GL_FALSE;
-        GLEW_VERSION_2_0 = GL_FALSE;
-      }
-    }
+	/* query opengl version */
+	s = glGetString(GL_VERSION);
+	if (!s) return GLEW_ERROR_NO_GL_VERSION;
+	major = _glewStrCLen(s, '.')-1;
+	minor = _glewStrCLen(s, '.')+1;
+  	if (s+major == NULL
+	  || s+minor-1 == NULL || s+minor == NULL
+	  || (s[major] == 1 && s[minor] < '1'))
+	{
+	  return GLEW_ERROR_GL_VERSION_10_ONLY;
+	}
+	else
+	{
+	  if (s[major] >= '2')
+	  {
+		GLEW_VERSION_1_1 = GL_TRUE;
+		GLEW_VERSION_1_2 = GL_TRUE;
+		GLEW_VERSION_1_3 = GL_TRUE;
+		GLEW_VERSION_1_4 = GL_TRUE;
+		GLEW_VERSION_1_5 = GL_TRUE;
+		GLEW_VERSION_2_0 = GL_TRUE;
+	  }
+	  else
+	  {
+		if (s[minor] >= '5')
+		{
+		  GLEW_VERSION_1_1 = GL_TRUE;
+		  GLEW_VERSION_1_2 = GL_TRUE;
+		  GLEW_VERSION_1_3 = GL_TRUE;
+		  GLEW_VERSION_1_4 = GL_TRUE;
+		  GLEW_VERSION_1_5 = GL_TRUE;
+		  GLEW_VERSION_2_0 = GL_FALSE;
+		}
+	    if (s[minor] == '4')
+		{
+		  GLEW_VERSION_1_1 = GL_TRUE;
+		  GLEW_VERSION_1_2 = GL_TRUE;
+		  GLEW_VERSION_1_3 = GL_TRUE;
+		  GLEW_VERSION_1_4 = GL_TRUE;
+		  GLEW_VERSION_1_5 = GL_FALSE;
+		  GLEW_VERSION_2_0 = GL_FALSE;
+		}
+		if (s[minor] == '3')
+		{
+		  GLEW_VERSION_1_1 = GL_TRUE;
+		  GLEW_VERSION_1_2 = GL_TRUE;
+		  GLEW_VERSION_1_3 = GL_TRUE;
+		  GLEW_VERSION_1_4 = GL_FALSE;
+		  GLEW_VERSION_1_5 = GL_FALSE;
+		  GLEW_VERSION_2_0 = GL_FALSE;
+		}
+		if (s[minor] == '2')
+		{
+		  GLEW_VERSION_1_1 = GL_TRUE;
+		  GLEW_VERSION_1_2 = GL_TRUE;
+		  GLEW_VERSION_1_3 = GL_FALSE;
+		  GLEW_VERSION_1_4 = GL_FALSE;
+		  GLEW_VERSION_1_5 = GL_FALSE;
+		  GLEW_VERSION_2_0 = GL_FALSE;
+		}
+		if (s[minor] < '2')
+		{
+		  GLEW_VERSION_1_1 = GL_TRUE;
+		  GLEW_VERSION_1_2 = GL_FALSE;
+		  GLEW_VERSION_1_3 = GL_FALSE;
+		  GLEW_VERSION_1_4 = GL_FALSE;
+		  GLEW_VERSION_1_5 = GL_FALSE;
+		  GLEW_VERSION_2_0 = GL_FALSE;
+		}
+	  }
+	}
   }
   /* initialize extensions */