how raise instant-ngp NeRF GUI's resolution

• i trained two different resolution images NeRF , 2560x1152  4640x2088

python scripts/colmap2nerf.py ....

• but when i run instant-ngp GUI , this two different resolution images NeRF GUI's resolution look the same

• i try to change /src/testbed.cu :
from   float desired_resolution = 2048.0f;   change to
       float desired_resolution = 4096.0f;

then rebuild : 
cmake . -B build
cmake --build build --config RelWithDebInfo -j 

• but when i rerun instant-ngp GUI, these 2560x1152  4640x2088  NeRF GUI's resolution look the same

• how can i raise instant-ngp NeRF GUI's resolution from larger images NeRF ?

NVlabs / instant-ngp

how raise instant-ngp NeRF GUI's resolution #1459