It first started out with me trying to get a good icon for my world and then rejoining to find that the sun has replaced its texture with the inventory screen, I reloaded the resource pack minecraft uses and it fixed itself. But then i look in my inventory and it was completely black with the sun in the bottom right corner, this I was not able to fix and I dont know what caused it. This glitch also caused all the textures to dissapear and i had to reload the texture pack to fix it.

Edit: The inventory texture glitch fixed itself after a few reboots. Still should be looked in upon.