Input Assets

The input images were generated with Gemini's Nano Banana model.

Base Color Image

Normal Map

Depth Map

Shader Implementation

1. Diffuse and Specular Lighting: Implemented per-pixel diffuse and specular shading using the normal map to simulate light interaction across the lotus surface.
2. Normal Map Shading: Normals generated by Gemini Nano were used to compute realistic surface lighting and highlight curvature details.
3. Depth-Based Shadowing: Shadows and subsurface scattering were produced using the depth map to create soft 2.5D shadows.
4. Firefly Glow: A gaussian falloff was used to create a soft orb of warm light around the keyboard-controlled firefly.
5. Procedural Animation: The ambient firefly swarm was generated procedurally using time-varying sine and noise-based motion paths and twinkling behavior.

iChannel0: Normal map, iChannel1: Depth map, iChannel2: Color image, iChannel3: Keyboard