forge-normal-maps

What problem does it solve?

Extend 3D SDL GPU projects with per-pixel surface detail by adding tangent-space normal mapping, enabling richer visuals without increasing geometry.

Core Features & Use Cases

• Extend vertex layout with tangent data and compute a TBN matrix in the vertex shader.
• Sample and decode normal maps in the fragment shader to perturb normals per texel.
• Use with models lacking tangents by optionally computing tangents on import.
• Use Case: elevate a textured mesh to show fine surface details like bumps and grooves on characters or props.

Quick Start

Update the vertex format to include a vec4 tangent, implement TBN construction in the vertex shader, and sample a normal map in the fragment shader to influence lighting.