How do I turn on Pure PBR Shaders in game?
Open your Video Settings, navigate to the Shader Packs menu, and select Pure PBR Shaders from the list. Make sure you have a compatible shader loader active on your client so the menu option appears.
Why aren't my blocks showing metallic or surface reflections?
To get full material-based reflections, you usually need a PBR-compatible resource pack enabled alongside the shader, or you must enable the shader's built-in material generation settings if available. Without surface material data, blocks will not know whether to act as metal, stone, or rough terrain.
Do I need to put Pure PBR Shaders on my server?
No, shaders only change how lighting, sky light, and block surfaces are rendered on your screen. It goes strictly on your client and works on any multiplayer server without the server needing it.
Why are my caves and underground bases so dark?
Pure PBR Shaders adjusts skylight distribution and relies on realistic physics for light bounces rather than flat vanilla brightness. Place light sources near reflective or lighter-colored walls so the light can bounce naturally into darker corners.
How can I test if the PBR reflections are actually working?
Place metallic blocks outdoors under direct sunlight or moonlight, or check terrain during rain to see wet surface details. Look at the blocks from a low angle against the sun to spot crisp highlights and sky reflections.
How do I reduce lag and improve FPS with Pure PBR Shaders?
Calculating realistic light bounces and surface reflections is demanding on your graphics card. Lower your overall render distance and shadow distance in Video Settings, and turn down reflection or bounce quality inside the shader's configuration menu.
What does PBR actually change about my builds?
PBR stands for Physically Based Rendering, meaning blocks react to incoming light based on their specific surface properties. Instead of every block looking equally flat, metallic and wet surfaces get sharp highlights while rough terrain scatters light naturally.
Does Pure PBR Shaders work with custom texture packs?
Yes, and it works best with resource packs designed with PBR material maps (such as LabPBR or OldPBR formats, depending on your shader settings). If you use a standard resource pack without material maps, blocks will still get the upgraded sunlight and bounce lighting, just without custom per-pixel surface reflections.
Why do blocks look wet or shiny when it rains?
The shader dynamically alters surface properties during weather events to simulate wetness. Wet surfaces reflect sky light and nearby light sources much more sharply than dry blocks.
Why is the lighting in my enclosed room looking weird or leaking?
Because the shader calculates directional sunlight and skylight bounces, thin corners or half-blocks can sometimes let outside sky light bleed through if your shadow resolution is very low. Thickening your walls or adjusting shadow settings in the shader options usually fixes light leaks.