With Vfvs Shaders installed alongside a shader loader such as Iris or OptiFine, you can switch it on directly from the pause menu without restarting Minecraft.
Turning on the Shader Pack
1. Load into a world or stay on the title screen, then open Options and click Video Settings.
2. Open the Shaders or Shader Packs menu depending on your loader.
3. Select Vfvs Shaders from the list and click Done or Apply to reload the renderer.
Because the pack is lightweight and preserves the classic vanilla art style, the world reloads quickly and retains its familiar color palette rather than shifting every block's hue.
Verifying Reflections and Lighting
To confirm the visual upgrades are active, walk over to the nearest river, ocean, or pond. You will immediately see clean reflections across the water surface alongside soft lighting adjustments that leave your screen uncluttered. Because Vfvs Shaders also adds shiny surfaces to select blocks, walk around your base at different angles under daylight to spot which materials catch the light.