Enabling the Vanilla Deferred Lighting Shader and Graphics Mode
Activating the Pack and Graphics Settings
If you want to enjoy the full vanilla and default shader experience while using Minecraft Bedrock Edition's new shader capabilities, you can use the Vanilla Deferred Lighting shader pack. To begin, activate the pack in your resource pack settings.
Once the pack is active, you must configure your game settings to support the technical preview features. Open your world's video settings and change the graphics mode to "Diferred Technical Preview". Additionally, ensure that you enable the “Render Dragon Features for Creators” experimental feature for proper functionality.
Keep in mind that because this feature is currently in a beta or preview state, it is not yet fully optimized and may cause some problems, bugs, or glitches during your gameplay. Enjoy the default lighting experience while testing out the new technical preview framework without changing any of the classic visual lighting aesthetics.