Gltf loading error - filament::backend::HandleAllocator<16, 64, 584>::allocateHandleSlow

[mbalajee]

We seriously considering Filament as a main option to render a BIM 3D model in our application. Have tried loading multiple GLB files & most of them just loaded super fast & provided smooth interaction. There's a slightly bigger gltf file I loaded which crashed our android/ios app. Tried loading the same model in desktop gltf_viewer on Mac M1 and result was the same. Below are the steps I followed,

On mac, I ran below commands

• ./build.sh -c -p desktop -i debug
• filament/out/cmake-debug/samples/gltf_viewer -a metal

Dragged & dropped the gltf file (360mb with 62826 nodes) on the desktop gltf_viewer. Viewer hung for a few seconds the crashed with the following message,

in HandleBase::HandleId filament::backend::HandleAllocator<16, 64, 584>::allocateHandleSlow(size_t) [P0 = 16, P1 = 64, P2 = 584]:82
in file /filament/filament/backend/src/HandleAllocator.cpp
reason: HandleAllocator arena is full, using slower system heap. Please increase the appropriate constant (e.g. FILAMENT_OPENGL_HANDLE_ARENA_SIZE_IN_MB).
#0	gltf_viewer                            0x1060dcc2c utils::CallStack::update(unsigned long) + 32
#1	gltf_viewer                            0x1060dcc00 utils::CallStack::unwind(unsigned long) + 44

As suggested in these two discussions, I built Filament from source by updating the below values
#7015
#5758

FILAMENT_PER_RENDER_PASS_ARENA_SIZE_IN_MB = 3 to 6
FILAMENT_PER_FRAME_COMMANDS_SIZE_IN_MB = 2 to 8
FILAMENT_MIN_COMMAND_BUFFERS_SIZE_IN_MB = 2 to 8
FILAMENT_OPENGL_HANDLE_ARENA_SIZE_IN_MB = 4 to 32
FILAMENT_METAL_HANDLE_ARENA_SIZE_IN_MB = 4 to 32

Is there a limitation on the size of glb/gltf file that Filament can load? If not can i change anything else in the source to handle large gltf files?

I was also looking at this hardware instancing solution but not sure that will be of any relevance to this issue since am loading a single gltf file.

Appreciate any input