Unflattens the vertex and index buffers

Vertex buffers and index buffers are now stored as a set of vertices
and the corresponding triangle indices that make up the meshes.
Previously the vertex buffers were flattened meaning the vertices
were repeated for each triangle storing 3 vertices for each triangle.
Storing the meshes this way reduces the amount of space required
to store the mesh and thus reduces the cost of transferring the
data to the GPU and improves caching. The patch also stores the
vertices as packed_float3 and the index buffers are packed_uint3.

@@ -232,3 +235,3 @@
 
   for (int i = 0; i < std::min(num_points, b_points_num); i++) {
-    const float3 co = get_float3(b_attr_position.data[i].vector());
+    float3 P = get_float3(b_attr_position.data[i].vector());

@@ -334,0 +318,4 @@
+                                 num_verts + 1);
+    }
+  }
+  // FRL_CGR END

@@ -566,3 +587,3 @@
         if (mesh->num_triangles() > 0) {
           RTCGeometry geom = rtcGetGeometry(scene, geom_id);
-          set_tri_vertex_buffer(geom, mesh, true);
+	  // FIXME: Update only works if the buffer has the same pointer

@@ -113,1 +111,3 @@
-  static_assert(sizeof(uint3) == num_elements * datatype_size(data_type));
+  // static const DataType data_type = TYPE_UINT;
+  // static const size_t num_elements = 3;
+  // static_assert(sizeof(uint3) == num_elements * datatype_size(data_type));

@@ -167,6 +167,12 @@ size_t Attribute::data_sizeof() const
     return sizeof(float2);
   else if (type == TypeDesc::TypeMatrix)
     return sizeof(Transform);
+  // WL: The float3 type is not interchangeable with float4

@@ -2122,0 +2135,4 @@
+        &(dscene->attributes_float4), &(dscene->attributes_uchar4)};
+    std::for_each(memoryItems.begin(), memoryItems.end(), [update_stats](const device_memory *dm) {
+      update_stats->device.buffers.add_entry({dm->name, dm->memory_size()});
+    });

@@ -385,3 +406,3 @@
     if (use_motion_blur && curve_attr) {
       size_t steps_size = curve_keys.size() * (motion_steps - 1);
-      float3 *key_steps = curve_attr->data_float3();
+      // WL: Attribute data is stored as a float4 and is not

@@ -764,0 +784,4 @@
+      tri_patch[i] = -1;
+      off += 3;
+    }
+    // Store extra index set that does not have the offset for motion blur

@@ -155,2 +155,2 @@
-    memcpy(
-        attr_mP->data_float3() + motion_step * numpoints, points_data, sizeof(float3) * numpoints);
+    float *radius_data = radius.data();
+    // FRL_CGR BEGIN

@@ -53,0 +56,4 @@
+/* CUDA int3 is already packed. */
+typedef int3 packed_int3;
+#else
+/* HIP int3 is not packed (https://github.com/ROCm-Developer-Tools/HIP/issues/706). */