[Fix] (MG_Util/Converters): add MirrorClampToEdge

MobileGL/MG_State/GLState/SamplerState/SamplerObject.h

@@ -22,6 +22,7 @@ namespace MobileGL {
         MirroredRepeat,
         Repeat,
         ClampToBorder,
+        MirrorClampToEdge,
         SamplerWrapModeCount,
         Unknown = -1
     };

MobileGL/MG_Util/Converters/GLToMG/TextureEnumConverter.cpp

@@ -355,6 +355,8 @@ namespace MobileGL {
                 return SamplerWrapMode::Repeat;
             case GL_CLAMP_TO_BORDER:
                 return SamplerWrapMode::ClampToBorder;
+            case GL_MIRROR_CLAMP_TO_EDGE:
+                return SamplerWrapMode::MirrorClampToEdge;
             default:
                 return SamplerWrapMode::Unknown;
             }

MobileGL/MG_Util/Converters/MGToGL/TextureEnumConverter.cpp

@@ -376,6 +376,8 @@ namespace MobileGL {
                 return GL_REPEAT;
             case SamplerWrapMode::ClampToBorder:
                 return GL_CLAMP_TO_BORDER;
+            case SamplerWrapMode::MirrorClampToEdge:
+                return GL_MIRROR_CLAMP_TO_EDGE;
             default:
                 return GL_UNKNOWN_MGL;
             }