UnityEditor.ShaderUtil.GetComboCount C# (CSharp) Method

        internal static extern int GetComboCount(Shader s, bool usedBySceneOnly);
        [MethodImpl(MethodImplOptions.InternalCall)]

        private void DoShaderVariants(EditorWindow caller, ref Rect drawPos)
        {
            EditorGUI.BeginChangeCheck();
            bool usedBySceneOnly = GUI.Toggle(drawPos, ShaderInspectorPlatformsPopup.currentVariantStripping == 1, EditorGUIUtility.TempContent("Skip unused shader_features"), ShaderInspectorPlatformsPopup.Styles.menuItem);

            drawPos.y += 16f;
            if (EditorGUI.EndChangeCheck())
            {
                ShaderInspectorPlatformsPopup.currentVariantStripping = !usedBySceneOnly ? 0 : 1;
            }
            drawPos.y += 6f;
            int    comboCount = ShaderUtil.GetComboCount(this.m_Shader, usedBySceneOnly);
            string text       = !usedBySceneOnly?comboCount.ToString() + " variants total" : comboCount.ToString() + " variants included";

            Rect position = drawPos;

            position.x     += (float)ShaderInspectorPlatformsPopup.Styles.menuItem.padding.left;
            position.width -= (float)(ShaderInspectorPlatformsPopup.Styles.menuItem.padding.left + 4);
            GUI.Label(position, text);
            position.xMin = position.xMax - 40f;
            if (!GUI.Button(position, "Show", EditorStyles.miniButton))
            {
                return;
            }
            ShaderUtil.OpenShaderCombinations(this.m_Shader, usedBySceneOnly);
            caller.Close();
            GUIUtility.ExitGUI();
        }