castle_stone

Procedural masonry in world space: running-bond blocks, bevelled joints, grain, pitting and soot stains climbing from the ground. Picks its projection plane from the dominant normal axis, so walls, plinths and carved forms read as one stone. It is an engine-lit surface() shader that fills a PbrSurface with albedo, normal, roughness and metallic 0.

Up-facing surfaces take the world XZ plane, X-facing surfaces the ZY plane and Z-facing surfaces the XY plane, each with its own salt so the three patterns differ. Odd courses are staggered by half a block, every course gets a random offset and a block width between 0.85 and 1.35 times block_size.x, and each block gets its own grey between (0.20, 0.20, 0.21) and (0.34, 0.33, 0.32) with a random green-grey tint, shaded by a five-octave value-noise grain and a broad blotch layer. Joints are near-black (0.03) with a soft bevel into the face. The normal is tilted by the grain's slope and by the bevel at each block edge. Below soot_height the stone darkens toward 0.12 of its colour, with the soot strongest at world height 0 and broken up by noise.

Two materials use it, and the fx_breath scene builds its castle from both: castle_stone (white tint, the property defaults) and dragon_stone (tint (0.62, 0.66, 0.6), blocks 2.4 by 1.2, roughness 0.8, soot up to height 1.0).

Properties