<NME> transpose.ts
<BEF> ADDFILE
<MSG> feat(webgl): add glsl_transposeMat3 function

<DFF> @@ -0,0 +1,31 @@
+/**
+ * @license
+ * Copyright 2018 Google Inc.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @file Matrix transpose shader functions.
+ */
+
+export const glsl_transposeMat3 = `
+mat3 transpose(mat3 m) {
+  mat3 result;
+  for (int i = 0; i < 3; ++i) {
+    for (int j = 0; j < 3; ++j) {
+      result[i][j] = m[j][i];
+    }
+  }
+  return result;
+}
+`;

feat(webgl): add glsl_transposeMat3 function