PBR textures (physically based rendering textures) are image sets that describe how light interacts with a surface in a realistic way. They have become the standard in 3D graphics, game engines, and archviz. This guide explains what they are, which maps they use, and how to use them in your projects.

What is PBR?

Physically based rendering (PBR) is a shading and lighting model that aims to match how light behaves in the real world. Instead of tweaking arbitrary “diffuse” and “specular” values, PBR uses measurable properties such as albedo (base color), roughness, and metalness (or specular). This makes materials look consistent under any lighting and speeds up the workflow. Whether you're working in Blender, Unreal Engine, Unity, or a render engine like V-Ray or Corona, the same PBR texture set can be reused with minimal tweaking.

Common PBR texture maps

A typical PBR texture pack includes:

  • Albedo (or base color) – The color of the surface without lighting. No shadows or highlights. Must be in sRGB color space for correct results.
  • Normal map – Simulates surface detail (bumps, cracks) without adding geometry. Usually in tangent space. Use non-color/linear.
  • Roughness – How rough or smooth the surface is (0 = mirror-like, 1 = fully rough). Affects the size and sharpness of reflections. Linear.
  • Metalness – In metalness workflow: 0 = dielectric (plastic, wood, stone), 1 = metal. Drives how the surface reflects the environment. Linear.
  • Ambient occlusion (AO) – Optional. Adds soft shadows in crevices for extra depth. Often multiplied with albedo or used in a separate pass.

Why use PBR textures?

PBR textures give you predictable, realistic results across different engines (Blender, Unreal Engine, Unity, V-Ray, Corona). Once you understand the workflow, you can swap assets and lighting without endless tweaking. They are also widely supported: you can download free PBR textures from many sites, including our Locker3d library, and use them in commercial and personal work. For beginners, see our PBR textures for beginners guide; for map details, read understanding albedo, normal, and roughness maps.

How PBR textures differ from traditional

Older workflows used diffuse maps that often had baked lighting or ambient occlusion, and specular/gloss maps tuned by hand. That made materials look good in one engine but inconsistent elsewhere. PBR separates surface properties from lighting, so the same texture set works in real-time and offline renderers. If you're migrating from a diffuse/specular pipeline, check PBR vs traditional textures.

Where to get free PBR textures

You can browse our full texture catalog by category (e.g. wood, concrete, metal, floor, stone). All textures are free and available under a permissive license for use in Blender, Unreal Engine, Unity, and other DCC or game engines. For application steps, see how to apply PBR textures in Blender and our blog for more guides.

Frequently asked questions

What are PBR textures?

PBR textures are sets of image maps (albedo, roughness, normal, metalness) that describe how a surface reacts to light in a physically accurate way. They are the standard for realistic 3D materials in games, archviz, and VFX.

What maps do I need for PBR?

At minimum: albedo (base color), roughness, and normal. Many packs also include metalness. Optional: ambient occlusion, height. Use sRGB for color maps and linear/non-color for roughness, normal, and metalness.

Where can I get free PBR textures?

You can download free PBR textures from Locker3d and other CC0-friendly sites. Browse by category and use them in Blender, Unreal, Unity, and other software for personal and commercial projects.

Do PBR textures work in Blender?

Yes. Blender's Principled BSDF is built for PBR. Connect albedo to Base Color, roughness to Roughness, normal via a Normal Map node, and metalness to Metallic. See our step-by-step guide for applying PBR textures in Blender.