fix 3741 - enable transparent gl-mesh3d draw with alpha color

Author: archmoj

package-lock.json

@@ -78,7 +78,7 @@
     "gl-heatmap2d": "^1.0.5",
     "gl-line3d": "^1.1.11",
     "gl-mat4": "^1.2.0",
-    "gl-mesh3d": "^2.1.0",
+    "gl-mesh3d": "git://github.com/gl-vis/gl-mesh3d.git#6651929f5ac2c084ce51a88ff2e40311fab4a46c",
     "gl-plot2d": "^1.4.2",
     "gl-plot3d": "^2.2.1",
     "gl-pointcloud2d": "^1.0.2",

package.json

@@ -0,0 +1,26 @@
+{
+    "data": [
+        {
+            "type": "mesh3d",
+            "x":[0, 1, 2, 0],
+            "y":[0, 0, 1, 2],
+            "z":[0, 2, 0, 1],
+            "i":[0, 0, 0, 1],
+            "j":[1, 2, 3, 2],
+            "k":[2, 3, 1, 3],
+            "vertexcolor": [
+                "rgb(0, 0, 0, 1.0)",
+                "rgb(255, 0, 0, 0.1)",
+                "rgb(0, 255, 0, 0.1)",
+                "rgb(0, 0, 255, 0.1)"
+            ]
+        }
+    ],
+    "layout": {
+        "title": {
+            "text": "Should draw transparent mesh<br>when having transparent rgba color"
+        },
+        "width": 400,
+        "height": 400
+    }
+}