This is Pixlli, a Vanilla+ resource pack that simply increases the resolution of the default textures and making them look good.
The texture pack is both on CurseForge and Modrinth.
WARNING: JAVA ONLY.
Shaders:
0:05 - 0:24 : Nostalgia Shader
0:24 - the end: Complementary Unbound
Stone Brick texture showcase: SEUS PTGI GFME