rift_rock

Torn basalt rubble with glowing arcane seams: lit PBR stone whose seam emission follows lane 0.x (heat), while lane 0.y varies the pattern per chunk. The fragment builds a PbrSurface and shades it with zero_pbr_shade from @builtin::shaderModules.pbr_shading.

The pattern is 3D value noise over the mesh's own UV (scaled 6 by 3) plus the chunk's variation, so it stays fixed on the chunk as it tumbles. One noise layer, folded about its middle and raised to the 30th power, draws thin seams; a second varies the stone's brightness and roughness (0.73 to 0.88). The albedo is base_color darkened along the seams. The emission is glow_color times the seam, the heat and a flicker at 9 radians per second, plus a faint constant seam glow and a dim glow on downward-facing surfaces.

The arcane_rift graph (rift/arcane_rift.procGraph) draws its rubble output with it through rockMat, on noise-displaced, subdivided octahedra that cast shadows. The rift_rubble compute shader moves the chunks and writes their data0 as (heat, seed, cycle phase, 0). In the Procgen Effects Showcase world, the fx_rift scene plays the graph.

Properties

Lanes