forge-gobo-spotlight

What problem does it solve?

Add a projected-texture spotlight with cone falloff, shadow map, and pattern projection to an SDL GPU project. The approach enables cinematic lighting by combining gobo projection with depth-based shadows using a single light_vp matrix.

Core Features & Use Cases

• Gobo projection: project a texture through the light to create patterns on the scene.
• Cone falloff and shadows: inner/outer cone angles with depth-based shadow mapping for realism.
• Triple-duty matrix: a single light_vp drives shadow mapping, gobo UV projection, and cone masking in the scene.

Quick Start

Integrate forge-gobo-spotlight by initializing the light position and target, loading a gobo texture, creating a 2D shadow map, and wiring the light_vp into your scene render.