diff --git a/Assets/UniGLTF/Runtime/UniGLTF/IO/MeshExportUtil.cs b/Assets/UniGLTF/Runtime/UniGLTF/IO/MeshExportUtil.cs
index 82a1c659d..19bd410da 100644
--- a/Assets/UniGLTF/Runtime/UniGLTF/IO/MeshExportUtil.cs
+++ b/Assets/UniGLTF/Runtime/UniGLTF/IO/MeshExportUtil.cs
@@ -33,6 +33,9 @@ namespace UniGLTF
             public gltfMorphTarget ToGltf(glTF gltf, int bufferIndex, bool useNormal)
             {
                 var positionAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, m_positions.ToArray(), glBufferTarget.ARRAY_BUFFER);
+                gltf.accessors[positionAccessorIndex].min = m_positions.Aggregate(m_positions[0], (a, b) => new Vector3(Mathf.Min(a.x, b.x), Math.Min(a.y, b.y), Mathf.Min(a.z, b.z))).ToArray();
+                gltf.accessors[positionAccessorIndex].max = m_positions.Aggregate(m_positions[0], (a, b) => new Vector3(Mathf.Max(a.x, b.x), Math.Max(a.y, b.y), Mathf.Max(a.z, b.z))).ToArray();
+
                 var normalAccessorIndex = -1;
                 if (useNormal)
                 {
diff --git a/Assets/UniGLTF/Runtime/UniGLTF/IO/TextureIO/TextureSamplerUtil.cs b/Assets/UniGLTF/Runtime/UniGLTF/IO/TextureIO/TextureSamplerUtil.cs
index 5a3bea1ae..19f699377 100644
--- a/Assets/UniGLTF/Runtime/UniGLTF/IO/TextureIO/TextureSamplerUtil.cs
+++ b/Assets/UniGLTF/Runtime/UniGLTF/IO/TextureIO/TextureSamplerUtil.cs
@@ -8,7 +8,24 @@ namespace UniGLTF
     public static class TextureSamplerUtil
     {
         #region Export
-        public static glFilter ExportFilterMode(Texture texture)
+        // MagFilter は ２種類だけ
+        public static glFilter ExportMagFilter(Texture texture)
+        {
+            switch (texture.filterMode)
+            {
+                case FilterMode.Point:
+                    return glFilter.NEAREST;
+
+                case FilterMode.Bilinear:
+                case FilterMode.Trilinear:
+                    return glFilter.LINEAR;
+
+                default:
+                    throw new NotImplementedException();
+            }
+        }
+
+        public static glFilter ExportMinFilter(Texture texture)
         {
             switch (texture.filterMode)
             {
@@ -68,13 +85,14 @@ namespace UniGLTF
 
         public static glTFTextureSampler Export(Texture texture)
         {
-            var filter = ExportFilterMode(texture);
+            var magFilter = ExportMagFilter(texture);
+            var minFilter = ExportMinFilter(texture);
             var wrapS = ExportWrapMode(GetWrapS(texture));
             var wrapT = ExportWrapMode(GetWrapT(texture));
             return new glTFTextureSampler
             {
-                magFilter = filter,
-                minFilter = filter,
+                magFilter = magFilter,
+                minFilter = minFilter,
                 wrapS = wrapS,
                 wrapT = wrapT,
             };