GLSL Shaders

Custom GPU shaders in TouchDesigner. Three contexts: TOP (image processing), MAT (materials), POP (particle compute). See reference.md for built-in uniforms, functions, and template shaders.

Contexts

• glslmultiTOP (prefer over glslTOP) — image processing, procedural textures, compute. Supports >3 inputs and POP buffer reads
• glslMAT — custom materials with vertex + pixel shaders, TD lighting system
• glslPOP / glsladvancedPOP — per-point GPU compute on particle data (see td-pop-family skill). Compute shader API (P[idx], TDIn_P(), N[idx]) documented in td-pop-family reference.md. For glsladvancedPOP (multi-class, index buffer, extra outputs), see glsladvancedPOP.md. Custom attributes via attr sequence — buffer name is Color (capital C), auto-declared (see td-pop-family skill)

Naming Conventions

• Uniforms uName, Samplers sName, Functions CapitalCase(), Locals camelCase, Constants UPPER_SNAKE
• Input index defines at top: #define TEX_FEEDBACK 0

Docked DAT Pattern (glslTOP/glslmultiTOP)

Creating a glslmultiTOP auto-docks <name>_pixel, <name>_compute, <name>_info and auto-wires pixeldat to <name>_pixel.