The question of IBL precomputation is finally solved

from learnopengl In the article of , Precomputation IBL Of specular The picture has high bright spots , In order to solve this , There is a big man who provides the method of understanding
https://chetanjags.wordpress.com/2015/08/26/image-based-lighting/
My doubts are If pre calculated HDR It carries the sun , I feel that the direct illumination is one more time of sunshine
I was just checking this article It is found that there is a reference to turning the sun from HDR Peel it off in the picture , Do it in code , My heart will be clear