Once SXGG Realis Shaders is placed in your game's shaderpacks folder alongside a compatible shader loader such as Iris or OptiFine, you need to enable it through the video menu before entering or exploring your world.
Selecting the Shader Pack
1. Open the pause menu or main title screen and click Options.
2. Go to Video Settings and open the Shaders or Shader Packs menu.
3. Click SXGG Realis Shaders in the pack list so it is highlighted.
4. Select Done or Apply and give the client a moment to reload all world rendering.
Verifying the Lighting Changes
Load into an outdoor biome during daytime to confirm the shader pack is working properly. You should immediately notice clean daylight, soft ambient tones in shaded corners, and upgraded sunbeams cutting past trees or cliff edges. Even with these realistic depth upgrades active, your blocks and textures will retain their familiar vanilla fantasy mood.
If the outdoor lighting still looks completely flat, return to the shader selection menu to make sure the pack stayed selected rather than reverting to Off or Internal. You can also toggle shaders quickly during survival or creative sessions whenever you want to compare the upgraded shadows against standard vanilla rendering.