(I need this issue resolve ASAP)I was so shocked that this happened to my world. Everything was black(assumingly my mipmap was on) so i changed my mipmap level off, nothing happened so i went to my catalyst control center, i switched mipmap to performance and restarted minecraft and nothing happened. I have list all of my specs(I'm using a dell  Laptop).

Specs:

processor:                          Intel(R) Core(TM) i7 CPU Q700 @ 1.60GHz 1.60GHz

Installed memory(RAM):   8.00 GB 

System type:                      64-bit Operating System, 64-based processor 

Graphics Chipset ATI Mobility Radeon HD 4650Graphics Chipset ATI Mobility Radeon HD 4650

Driver Packaging Version 8.97.100-130424a-156445E-ATIDriver Packaging Version 8.97.100-130424a-156445E-ATI

 Catalyst Version 13.4Catalyst Version 13.4

specs(minecraft):

minecraft:Java

Version: 1.15.2