diff --git a/packages/canvas/canvas-mesh/src/CanvasMeshRenderer.js b/packages/canvas/canvas-mesh/src/CanvasMeshRenderer.js
index 56440f0..7154fa0 100644
--- a/packages/canvas/canvas-mesh/src/CanvasMeshRenderer.js
+++ b/packages/canvas/canvas-mesh/src/CanvasMeshRenderer.js
@@ -236,7 +236,7 @@
     renderMeshFlat(mesh)
     {
         const context = this.renderer.context;
-        const vertices = mesh.geometry.getAttribute('aVertexPosition').data;
+        const vertices = mesh.geometry.getBuffer('aVertexPosition').data;
         const length = vertices.length / 2;
 
         // this.count++;

diff --git a/packages/canvas/canvas-mesh/src/CanvasMeshRenderer.js b/packages/canvas/canvas-mesh/src/CanvasMeshRenderer.js
index 56440f0..7154fa0 100644
--- a/packages/canvas/canvas-mesh/src/CanvasMeshRenderer.js
+++ b/packages/canvas/canvas-mesh/src/CanvasMeshRenderer.js
@@ -236,7 +236,7 @@
     renderMeshFlat(mesh)
     {
         const context = this.renderer.context;
-        const vertices = mesh.geometry.getAttribute('aVertexPosition').data;
+        const vertices = mesh.geometry.getBuffer('aVertexPosition').data;
         const length = vertices.length / 2;
 
         // this.count++;
diff --git a/packages/canvas/canvas-mesh/src/SimpleMesh.js b/packages/canvas/canvas-mesh/src/SimpleMesh.js
index e8c6456..7a0b665 100644
--- a/packages/canvas/canvas-mesh/src/SimpleMesh.js
+++ b/packages/canvas/canvas-mesh/src/SimpleMesh.js
@@ -12,7 +12,7 @@
 {
     if (this.autoUpdate)
     {
-        this.geometry.getAttribute('aVertexPosition').update();
+        this.geometry.getBuffer('aVertexPosition').update();
     }
 
     if (this.shader.update)

diff --git a/packages/canvas/canvas-mesh/src/CanvasMeshRenderer.js b/packages/canvas/canvas-mesh/src/CanvasMeshRenderer.js
index 56440f0..7154fa0 100644
--- a/packages/canvas/canvas-mesh/src/CanvasMeshRenderer.js
+++ b/packages/canvas/canvas-mesh/src/CanvasMeshRenderer.js
@@ -236,7 +236,7 @@
     renderMeshFlat(mesh)
     {
         const context = this.renderer.context;
-        const vertices = mesh.geometry.getAttribute('aVertexPosition').data;
+        const vertices = mesh.geometry.getBuffer('aVertexPosition').data;
         const length = vertices.length / 2;
 
         // this.count++;
diff --git a/packages/canvas/canvas-mesh/src/SimpleMesh.js b/packages/canvas/canvas-mesh/src/SimpleMesh.js
index e8c6456..7a0b665 100644
--- a/packages/canvas/canvas-mesh/src/SimpleMesh.js
+++ b/packages/canvas/canvas-mesh/src/SimpleMesh.js
@@ -12,7 +12,7 @@
 {
     if (this.autoUpdate)
     {
-        this.geometry.getAttribute('aVertexPosition').update();
+        this.geometry.getBuffer('aVertexPosition').update();
     }
 
     if (this.shader.update)
diff --git a/packages/core/src/geometry/Buffer.js b/packages/core/src/geometry/Buffer.js
index 5ed6046..a1da80f 100644
--- a/packages/core/src/geometry/Buffer.js
+++ b/packages/core/src/geometry/Buffer.js
@@ -47,6 +47,7 @@
     // TODO could explore flagging only a partial upload?
     /**
      * flags this buffer as requiring an upload to the GPU
+     * @param {ArrayBuffer|SharedArrayBuffer|ArrayBufferView} [data] the data to update in the buffer.
      */
     update(data)
     {

diff --git a/packages/canvas/canvas-mesh/src/CanvasMeshRenderer.js b/packages/canvas/canvas-mesh/src/CanvasMeshRenderer.js
index 56440f0..7154fa0 100644
--- a/packages/canvas/canvas-mesh/src/CanvasMeshRenderer.js
+++ b/packages/canvas/canvas-mesh/src/CanvasMeshRenderer.js
@@ -236,7 +236,7 @@
     renderMeshFlat(mesh)
     {
         const context = this.renderer.context;
-        const vertices = mesh.geometry.getAttribute('aVertexPosition').data;
+        const vertices = mesh.geometry.getBuffer('aVertexPosition').data;
         const length = vertices.length / 2;
 
         // this.count++;
diff --git a/packages/canvas/canvas-mesh/src/SimpleMesh.js b/packages/canvas/canvas-mesh/src/SimpleMesh.js
index e8c6456..7a0b665 100644
--- a/packages/canvas/canvas-mesh/src/SimpleMesh.js
+++ b/packages/canvas/canvas-mesh/src/SimpleMesh.js
@@ -12,7 +12,7 @@
 {
     if (this.autoUpdate)
     {
-        this.geometry.getAttribute('aVertexPosition').update();
+        this.geometry.getBuffer('aVertexPosition').update();
     }
 
     if (this.shader.update)
diff --git a/packages/core/src/geometry/Buffer.js b/packages/core/src/geometry/Buffer.js
index 5ed6046..a1da80f 100644
--- a/packages/core/src/geometry/Buffer.js
+++ b/packages/core/src/geometry/Buffer.js
@@ -47,6 +47,7 @@
     // TODO could explore flagging only a partial upload?
     /**
      * flags this buffer as requiring an upload to the GPU
+     * @param {ArrayBuffer|SharedArrayBuffer|ArrayBufferView} [data] the data to update in the buffer.
      */
     update(data)
     {
diff --git a/packages/core/src/geometry/Geometry.js b/packages/core/src/geometry/Geometry.js
index 22ba14c..62910b2 100644
--- a/packages/core/src/geometry/Geometry.js
+++ b/packages/core/src/geometry/Geometry.js
@@ -145,7 +145,18 @@
      */
     getAttribute(id)
     {
-        return this.buffers[this.attributes[id].buffer];
+        return this.attributes[id];
+    }
+
+    /**
+     * returns the requested buffer
+     *
+     * @param {String} id  the name of the buffer required
+     * @return {PIXI.Buffer} the buffer requested.
+     */
+    getBuffer(id)
+    {
+        return this.buffers[this.getAttribute(id).buffer];
     }
 
     /**

diff --git a/packages/canvas/canvas-mesh/src/CanvasMeshRenderer.js b/packages/canvas/canvas-mesh/src/CanvasMeshRenderer.js
index 56440f0..7154fa0 100644
--- a/packages/canvas/canvas-mesh/src/CanvasMeshRenderer.js
+++ b/packages/canvas/canvas-mesh/src/CanvasMeshRenderer.js
@@ -236,7 +236,7 @@
     renderMeshFlat(mesh)
     {
         const context = this.renderer.context;
-        const vertices = mesh.geometry.getAttribute('aVertexPosition').data;
+        const vertices = mesh.geometry.getBuffer('aVertexPosition').data;
         const length = vertices.length / 2;
 
         // this.count++;
diff --git a/packages/canvas/canvas-mesh/src/SimpleMesh.js b/packages/canvas/canvas-mesh/src/SimpleMesh.js
index e8c6456..7a0b665 100644
--- a/packages/canvas/canvas-mesh/src/SimpleMesh.js
+++ b/packages/canvas/canvas-mesh/src/SimpleMesh.js
@@ -12,7 +12,7 @@
 {
     if (this.autoUpdate)
     {
-        this.geometry.getAttribute('aVertexPosition').update();
+        this.geometry.getBuffer('aVertexPosition').update();
     }
 
     if (this.shader.update)
diff --git a/packages/core/src/geometry/Buffer.js b/packages/core/src/geometry/Buffer.js
index 5ed6046..a1da80f 100644
--- a/packages/core/src/geometry/Buffer.js
+++ b/packages/core/src/geometry/Buffer.js
@@ -47,6 +47,7 @@
     // TODO could explore flagging only a partial upload?
     /**
      * flags this buffer as requiring an upload to the GPU
+     * @param {ArrayBuffer|SharedArrayBuffer|ArrayBufferView} [data] the data to update in the buffer.
      */
     update(data)
     {
diff --git a/packages/core/src/geometry/Geometry.js b/packages/core/src/geometry/Geometry.js
index 22ba14c..62910b2 100644
--- a/packages/core/src/geometry/Geometry.js
+++ b/packages/core/src/geometry/Geometry.js
@@ -145,7 +145,18 @@
      */
     getAttribute(id)
     {
-        return this.buffers[this.attributes[id].buffer];
+        return this.attributes[id];
+    }
+
+    /**
+     * returns the requested buffer
+     *
+     * @param {String} id  the name of the buffer required
+     * @return {PIXI.Buffer} the buffer requested.
+     */
+    getBuffer(id)
+    {
+        return this.buffers[this.getAttribute(id).buffer];
     }
 
     /**
diff --git a/packages/mesh-extras/src/NineSlicePlane.js b/packages/mesh-extras/src/NineSlicePlane.js
index d60d942..da6cae5 100644
--- a/packages/mesh-extras/src/NineSlicePlane.js
+++ b/packages/mesh-extras/src/NineSlicePlane.js
@@ -110,12 +110,12 @@
 
     get vertices()
     {
-        return this.geometry.getAttribute('aVertexPosition').data;
+        return this.geometry.getBuffer('aVertexPosition').data;
     }
 
     set vertices(value)
     {
-        this.geometry.getAttribute('aVertexPosition').data = value;
+        this.geometry.getBuffer('aVertexPosition').data = value;
     }
 
     /**

diff --git a/packages/canvas/canvas-mesh/src/CanvasMeshRenderer.js b/packages/canvas/canvas-mesh/src/CanvasMeshRenderer.js
index 56440f0..7154fa0 100644
--- a/packages/canvas/canvas-mesh/src/CanvasMeshRenderer.js
+++ b/packages/canvas/canvas-mesh/src/CanvasMeshRenderer.js
@@ -236,7 +236,7 @@
     renderMeshFlat(mesh)
     {
         const context = this.renderer.context;
-        const vertices = mesh.geometry.getAttribute('aVertexPosition').data;
+        const vertices = mesh.geometry.getBuffer('aVertexPosition').data;
         const length = vertices.length / 2;
 
         // this.count++;
diff --git a/packages/canvas/canvas-mesh/src/SimpleMesh.js b/packages/canvas/canvas-mesh/src/SimpleMesh.js
index e8c6456..7a0b665 100644
--- a/packages/canvas/canvas-mesh/src/SimpleMesh.js
+++ b/packages/canvas/canvas-mesh/src/SimpleMesh.js
@@ -12,7 +12,7 @@
 {
     if (this.autoUpdate)
     {
-        this.geometry.getAttribute('aVertexPosition').update();
+        this.geometry.getBuffer('aVertexPosition').update();
     }
 
     if (this.shader.update)
diff --git a/packages/core/src/geometry/Buffer.js b/packages/core/src/geometry/Buffer.js
index 5ed6046..a1da80f 100644
--- a/packages/core/src/geometry/Buffer.js
+++ b/packages/core/src/geometry/Buffer.js
@@ -47,6 +47,7 @@
     // TODO could explore flagging only a partial upload?
     /**
      * flags this buffer as requiring an upload to the GPU
+     * @param {ArrayBuffer|SharedArrayBuffer|ArrayBufferView} [data] the data to update in the buffer.
      */
     update(data)
     {
diff --git a/packages/core/src/geometry/Geometry.js b/packages/core/src/geometry/Geometry.js
index 22ba14c..62910b2 100644
--- a/packages/core/src/geometry/Geometry.js
+++ b/packages/core/src/geometry/Geometry.js
@@ -145,7 +145,18 @@
      */
     getAttribute(id)
     {
-        return this.buffers[this.attributes[id].buffer];
+        return this.attributes[id];
+    }
+
+    /**
+     * returns the requested buffer
+     *
+     * @param {String} id  the name of the buffer required
+     * @return {PIXI.Buffer} the buffer requested.
+     */
+    getBuffer(id)
+    {
+        return this.buffers[this.getAttribute(id).buffer];
     }
 
     /**
diff --git a/packages/mesh-extras/src/NineSlicePlane.js b/packages/mesh-extras/src/NineSlicePlane.js
index d60d942..da6cae5 100644
--- a/packages/mesh-extras/src/NineSlicePlane.js
+++ b/packages/mesh-extras/src/NineSlicePlane.js
@@ -110,12 +110,12 @@
 
     get vertices()
     {
-        return this.geometry.getAttribute('aVertexPosition').data;
+        return this.geometry.getBuffer('aVertexPosition').data;
     }
 
     set vertices(value)
     {
-        this.geometry.getAttribute('aVertexPosition').data = value;
+        this.geometry.getBuffer('aVertexPosition').data = value;
     }
 
     /**
diff --git a/packages/mesh-extras/src/SimpleMesh.js b/packages/mesh-extras/src/SimpleMesh.js
index 3991616..77194fb 100644
--- a/packages/mesh-extras/src/SimpleMesh.js
+++ b/packages/mesh-extras/src/SimpleMesh.js
@@ -22,7 +22,7 @@
     {
         const geometry = new MeshGeometry(vertices, uvs, indices);
 
-        geometry.getAttribute('aVertexPosition').static = false;
+        geometry.getBuffer('aVertexPosition').static = false;
 
         const meshMaterial = new MeshMaterial(texture);
 
@@ -41,18 +41,18 @@
      */
     get vertices()
     {
-        return this.geometry.getAttribute('aVertexPosition').data;
+        return this.geometry.getBuffer('aVertexPosition').data;
     }
     set vertices(value)
     {
-        this.geometry.getAttribute('aVertexPosition').data = value;
+        this.geometry.getBuffer('aVertexPosition').data = value;
     }
 
     _render(renderer)
     {
         if (this.autoUpdate)
         {
-            this.geometry.getAttribute('aVertexPosition').update();
+            this.geometry.getBuffer('aVertexPosition').update();
         }
 
         super._render(renderer);

diff --git a/packages/canvas/canvas-mesh/src/CanvasMeshRenderer.js b/packages/canvas/canvas-mesh/src/CanvasMeshRenderer.js
index 56440f0..7154fa0 100644
--- a/packages/canvas/canvas-mesh/src/CanvasMeshRenderer.js
+++ b/packages/canvas/canvas-mesh/src/CanvasMeshRenderer.js
@@ -236,7 +236,7 @@
     renderMeshFlat(mesh)
     {
         const context = this.renderer.context;
-        const vertices = mesh.geometry.getAttribute('aVertexPosition').data;
+        const vertices = mesh.geometry.getBuffer('aVertexPosition').data;
         const length = vertices.length / 2;
 
         // this.count++;
diff --git a/packages/canvas/canvas-mesh/src/SimpleMesh.js b/packages/canvas/canvas-mesh/src/SimpleMesh.js
index e8c6456..7a0b665 100644
--- a/packages/canvas/canvas-mesh/src/SimpleMesh.js
+++ b/packages/canvas/canvas-mesh/src/SimpleMesh.js
@@ -12,7 +12,7 @@
 {
     if (this.autoUpdate)
     {
-        this.geometry.getAttribute('aVertexPosition').update();
+        this.geometry.getBuffer('aVertexPosition').update();
     }
 
     if (this.shader.update)
diff --git a/packages/core/src/geometry/Buffer.js b/packages/core/src/geometry/Buffer.js
index 5ed6046..a1da80f 100644
--- a/packages/core/src/geometry/Buffer.js
+++ b/packages/core/src/geometry/Buffer.js
@@ -47,6 +47,7 @@
     // TODO could explore flagging only a partial upload?
     /**
      * flags this buffer as requiring an upload to the GPU
+     * @param {ArrayBuffer|SharedArrayBuffer|ArrayBufferView} [data] the data to update in the buffer.
      */
     update(data)
     {
diff --git a/packages/core/src/geometry/Geometry.js b/packages/core/src/geometry/Geometry.js
index 22ba14c..62910b2 100644
--- a/packages/core/src/geometry/Geometry.js
+++ b/packages/core/src/geometry/Geometry.js
@@ -145,7 +145,18 @@
      */
     getAttribute(id)
     {
-        return this.buffers[this.attributes[id].buffer];
+        return this.attributes[id];
+    }
+
+    /**
+     * returns the requested buffer
+     *
+     * @param {String} id  the name of the buffer required
+     * @return {PIXI.Buffer} the buffer requested.
+     */
+    getBuffer(id)
+    {
+        return this.buffers[this.getAttribute(id).buffer];
     }
 
     /**
diff --git a/packages/mesh-extras/src/NineSlicePlane.js b/packages/mesh-extras/src/NineSlicePlane.js
index d60d942..da6cae5 100644
--- a/packages/mesh-extras/src/NineSlicePlane.js
+++ b/packages/mesh-extras/src/NineSlicePlane.js
@@ -110,12 +110,12 @@
 
     get vertices()
     {
-        return this.geometry.getAttribute('aVertexPosition').data;
+        return this.geometry.getBuffer('aVertexPosition').data;
     }
 
     set vertices(value)
     {
-        this.geometry.getAttribute('aVertexPosition').data = value;
+        this.geometry.getBuffer('aVertexPosition').data = value;
     }
 
     /**
diff --git a/packages/mesh-extras/src/SimpleMesh.js b/packages/mesh-extras/src/SimpleMesh.js
index 3991616..77194fb 100644
--- a/packages/mesh-extras/src/SimpleMesh.js
+++ b/packages/mesh-extras/src/SimpleMesh.js
@@ -22,7 +22,7 @@
     {
         const geometry = new MeshGeometry(vertices, uvs, indices);
 
-        geometry.getAttribute('aVertexPosition').static = false;
+        geometry.getBuffer('aVertexPosition').static = false;
 
         const meshMaterial = new MeshMaterial(texture);
 
@@ -41,18 +41,18 @@
      */
     get vertices()
     {
-        return this.geometry.getAttribute('aVertexPosition').data;
+        return this.geometry.getBuffer('aVertexPosition').data;
     }
     set vertices(value)
     {
-        this.geometry.getAttribute('aVertexPosition').data = value;
+        this.geometry.getBuffer('aVertexPosition').data = value;
     }
 
     _render(renderer)
     {
         if (this.autoUpdate)
         {
-            this.geometry.getAttribute('aVertexPosition').update();
+            this.geometry.getBuffer('aVertexPosition').update();
         }
 
         super._render(renderer);
diff --git a/packages/mesh-extras/src/geometry/RopeGeometry.js b/packages/mesh-extras/src/geometry/RopeGeometry.js
index b5dcb6f..cfe24aa 100644
--- a/packages/mesh-extras/src/geometry/RopeGeometry.js
+++ b/packages/mesh-extras/src/geometry/RopeGeometry.js
@@ -51,8 +51,8 @@
 
         if (!points) return;
 
-        const vertexBuffer = this.getAttribute('aVertexPosition');
-        const uvBuffer = this.getAttribute('aTextureCoord');
+        const vertexBuffer = this.getBuffer('aVertexPosition');
+        const uvBuffer = this.getBuffer('aTextureCoord');
         const indexBuffer = this.getIndex();
 
         // if too little points, or texture hasn't got UVs set yet just move on.

diff --git a/packages/canvas/canvas-mesh/src/CanvasMeshRenderer.js b/packages/canvas/canvas-mesh/src/CanvasMeshRenderer.js
index 56440f0..7154fa0 100644
--- a/packages/canvas/canvas-mesh/src/CanvasMeshRenderer.js
+++ b/packages/canvas/canvas-mesh/src/CanvasMeshRenderer.js
@@ -236,7 +236,7 @@
     renderMeshFlat(mesh)
     {
         const context = this.renderer.context;
-        const vertices = mesh.geometry.getAttribute('aVertexPosition').data;
+        const vertices = mesh.geometry.getBuffer('aVertexPosition').data;
         const length = vertices.length / 2;
 
         // this.count++;
diff --git a/packages/canvas/canvas-mesh/src/SimpleMesh.js b/packages/canvas/canvas-mesh/src/SimpleMesh.js
index e8c6456..7a0b665 100644
--- a/packages/canvas/canvas-mesh/src/SimpleMesh.js
+++ b/packages/canvas/canvas-mesh/src/SimpleMesh.js
@@ -12,7 +12,7 @@
 {
     if (this.autoUpdate)
     {
-        this.geometry.getAttribute('aVertexPosition').update();
+        this.geometry.getBuffer('aVertexPosition').update();
     }
 
     if (this.shader.update)
diff --git a/packages/core/src/geometry/Buffer.js b/packages/core/src/geometry/Buffer.js
index 5ed6046..a1da80f 100644
--- a/packages/core/src/geometry/Buffer.js
+++ b/packages/core/src/geometry/Buffer.js
@@ -47,6 +47,7 @@
     // TODO could explore flagging only a partial upload?
     /**
      * flags this buffer as requiring an upload to the GPU
+     * @param {ArrayBuffer|SharedArrayBuffer|ArrayBufferView} [data] the data to update in the buffer.
      */
     update(data)
     {
diff --git a/packages/core/src/geometry/Geometry.js b/packages/core/src/geometry/Geometry.js
index 22ba14c..62910b2 100644
--- a/packages/core/src/geometry/Geometry.js
+++ b/packages/core/src/geometry/Geometry.js
@@ -145,7 +145,18 @@
      */
     getAttribute(id)
     {
-        return this.buffers[this.attributes[id].buffer];
+        return this.attributes[id];
+    }
+
+    /**
+     * returns the requested buffer
+     *
+     * @param {String} id  the name of the buffer required
+     * @return {PIXI.Buffer} the buffer requested.
+     */
+    getBuffer(id)
+    {
+        return this.buffers[this.getAttribute(id).buffer];
     }
 
     /**
diff --git a/packages/mesh-extras/src/NineSlicePlane.js b/packages/mesh-extras/src/NineSlicePlane.js
index d60d942..da6cae5 100644
--- a/packages/mesh-extras/src/NineSlicePlane.js
+++ b/packages/mesh-extras/src/NineSlicePlane.js
@@ -110,12 +110,12 @@
 
     get vertices()
     {
-        return this.geometry.getAttribute('aVertexPosition').data;
+        return this.geometry.getBuffer('aVertexPosition').data;
     }
 
     set vertices(value)
     {
-        this.geometry.getAttribute('aVertexPosition').data = value;
+        this.geometry.getBuffer('aVertexPosition').data = value;
     }
 
     /**
diff --git a/packages/mesh-extras/src/SimpleMesh.js b/packages/mesh-extras/src/SimpleMesh.js
index 3991616..77194fb 100644
--- a/packages/mesh-extras/src/SimpleMesh.js
+++ b/packages/mesh-extras/src/SimpleMesh.js
@@ -22,7 +22,7 @@
     {
         const geometry = new MeshGeometry(vertices, uvs, indices);
 
-        geometry.getAttribute('aVertexPosition').static = false;
+        geometry.getBuffer('aVertexPosition').static = false;
 
         const meshMaterial = new MeshMaterial(texture);
 
@@ -41,18 +41,18 @@
      */
     get vertices()
     {
-        return this.geometry.getAttribute('aVertexPosition').data;
+        return this.geometry.getBuffer('aVertexPosition').data;
     }
     set vertices(value)
     {
-        this.geometry.getAttribute('aVertexPosition').data = value;
+        this.geometry.getBuffer('aVertexPosition').data = value;
     }
 
     _render(renderer)
     {
         if (this.autoUpdate)
         {
-            this.geometry.getAttribute('aVertexPosition').update();
+            this.geometry.getBuffer('aVertexPosition').update();
         }
 
         super._render(renderer);
diff --git a/packages/mesh-extras/src/geometry/RopeGeometry.js b/packages/mesh-extras/src/geometry/RopeGeometry.js
index b5dcb6f..cfe24aa 100644
--- a/packages/mesh-extras/src/geometry/RopeGeometry.js
+++ b/packages/mesh-extras/src/geometry/RopeGeometry.js
@@ -51,8 +51,8 @@
 
         if (!points) return;
 
-        const vertexBuffer = this.getAttribute('aVertexPosition');
-        const uvBuffer = this.getAttribute('aTextureCoord');
+        const vertexBuffer = this.getBuffer('aVertexPosition');
+        const uvBuffer = this.getBuffer('aTextureCoord');
         const indexBuffer = this.getIndex();
 
         // if too little points, or texture hasn't got UVs set yet just move on.
diff --git a/packages/mesh/src/Mesh.js b/packages/mesh/src/Mesh.js
index b288c58..fd46cdd 100644
--- a/packages/mesh/src/Mesh.js
+++ b/packages/mesh/src/Mesh.js
@@ -428,7 +428,7 @@
 
         this.worldTransform.applyInverse(point, tempPoint);
 
-        const vertices = this.geometry.getAttribute('aVertexPosition').data;
+        const vertices = this.geometry.getBuffer('aVertexPosition').data;
 
         const points = tempPolygon.points;
         const indices =  this.geometry.getIndex().data;