Constant FORWARD_PLUS_WGSL 

pub const FORWARD_PLUS_WGSL: &'static str;

Forward+ rendering shader with tile-based light lookup.

Uses pre-computed light culling data to only iterate over lights that actually affect the current pixel’s tile. Implements Blinn-Phong lighting with the same quality as LIT_FORWARD_WGSL but with O(lights_per_tile) complexity instead of O(all_lights).