{ "license": "CC0-1.0", "shader": { "id": "z1j2ng6a", "title": "Mandelbox Reliquary", "license": "CC0-1.0", "provenance_type": "witnessed_generation", "made_with": "glslop", "status": "active", "compile_ok": true, "tags": [ "fractal", "kifs", "mandelbox", "neon", "portals" ], "parents": [], "author": "zazi5inxhmgi", "author_name": "ufffd", "author_url": "/u/ufffd", "created_at": "2026-06-18T03:08:27.737Z", "poster_url": "/posters/z1j2ng6a.avif", "stats": { "slops": 1, "views": 100, "forks": 0 }, "self": "/api/v1/shaders/z1j2ng6a", "isf": "/*{\n \"DESCRIPTION\": \"Laser Mandelbox: a box-fold/sphere-fold KIFS field that slowly tumbles and resolves into glowing cathedral shapes, raymarched in near-black with bold hot laser lines etched along its folds. Electric neon, real-time, seamless 16s loop.\",\n \"CREDIT\": \"glslop agent (Claude)\",\n \"CATEGORIES\": [\"fractal\", \"raymarch\", \"neon\", \"mandelbox\"],\n \"INPUTS\": [\n { \"NAME\": \"speed\", \"TYPE\": \"float\", \"DEFAULT\": 1.0, \"MIN\": 0.0, \"MAX\": 3.0 },\n { \"NAME\": \"glow\", \"TYPE\": \"float\", \"DEFAULT\": 1.0, \"MIN\": 0.3, \"MAX\": 3.0 },\n { \"NAME\": \"hue\", \"TYPE\": \"float\", \"DEFAULT\": 0.0, \"MIN\": 0.0, \"MAX\": 1.0 },\n { \"NAME\": \"boxScale\", \"TYPE\": \"float\", \"DEFAULT\": 2.05, \"MIN\": -3.0,\"MAX\": 3.0 },\n { \"NAME\": \"tumble\", \"TYPE\": \"float\", \"DEFAULT\": 0.5, \"MIN\": 0.0, \"MAX\": 1.5 },\n { \"NAME\": \"zoom\", \"TYPE\": \"float\", \"DEFAULT\": 1.0, \"MIN\": 0.5, \"MAX\": 2.0 },\n { \"NAME\": \"iterCount\", \"TYPE\": \"long\", \"DEFAULT\": 8, \"MIN\": 4, \"MAX\": 14 }\n ]\n}*/\n\n#define PI 3.14159265359\n#define TAU 6.28318530718\n\nconst float PERIOD = 16.0; // seconds per seamless loop\nconst int MAXI = 14; // hard cap on KIFS iterations (>= iterCount MAX)\nconst int STEPS = 100; // raymarch steps (kept low for real-time)\n\nmat2 rot(float a){ float c = cos(a), s = sin(a); return mat2(c, -s, s, c); }\n\n// electric neon palette (cyan / magenta / violet, not a flat rainbow)\nvec3 pal(float t){\n return 0.5 + 0.5 * cos(TAU * (t + vec3(0.55, 0.40, 0.18)));\n}\n\n// Mandelbox DE (Tglad box-fold + sphere-fold). Conservative -> clean march.\n// No sqrt in the loop (squared traps) for speed.\n// trap -> body color ; lineT2 -> squared dist to nearest axis (laser lines).\nfloat map(vec3 p, mat2 R1, mat2 R2, out float trap, out float lineT2){\n float fs = 3.8; // shrink the fractal so it reads as an object\n vec3 c = p * fs;\n c.xz = R1 * c.xz; // rigid tumble of the whole fractal\n c.xy = R2 * c.xy;\n vec3 z = c;\n float dr = 1.0;\n trap = 1.0e9; lineT2 = 1.0e9;\n for (int i = 0; i < MAXI; i++){\n if (i >= iterCount) break;\n z = clamp(z, -1.0, 1.0) * 2.0 - z; // box fold\n float r2 = dot(z, z); // sphere fold\n if (r2 < 0.25){ z *= 4.0; dr *= 4.0; } // 1/minR2, minR2 = 0.25\n else if (r2 < 1.0){ float s = 1.0 / r2; z *= s; dr *= s; }\n z = z * boxScale + c;\n dr = dr * abs(boxScale) + 1.0;\n trap = min(trap, dot(z, z));\n lineT2 = min(lineT2, min(min(dot(z.xy, z.xy), dot(z.yz, z.yz)), dot(z.xz, z.xz)));\n }\n return length(z) / abs(dr) / fs; // undo the input scale\n}\n\nvoid main(){\n vec2 uv = (gl_FragCoord.xy - 0.5 * RENDERSIZE.xy) / RENDERSIZE.y;\n\n // seamless loop: every angle is sin/cos of an integer multiple of th.\n // Gentle, eased motion so the fractal settles into readable shapes.\n float ph = fract(TIME * speed / PERIOD);\n float th = TAU * ph;\n mat2 R1 = rot(th); // one slow tumble / loop\n mat2 R2 = rot(0.4 + 0.18 * tumble * sin(th)); // gentle breathing fold\n\n // calm camera: mostly parked, slight eased drift\n float camDist = 8.0 * zoom;\n float az = 0.18 * sin(th);\n float el = 0.32 + 0.10 * sin(th);\n vec3 ro = camDist * vec3(sin(az) * cos(el), sin(el), cos(az) * cos(el));\n vec3 ta = vec3(0.0);\n vec3 fwd = normalize(ta - ro);\n vec3 rgt = normalize(cross(vec3(0.0, 1.0, 0.0), fwd));\n vec3 upv = cross(fwd, rgt);\n vec3 rd = normalize(uv.x * rgt + uv.y * upv + 1.6 * fwd);\n\n // ---- surface raymarch ----\n float t = 0.05;\n float tcap = camDist + 8.0;\n float trap = 1.0e9, lineT2 = 1.0e9, trapHit = 1.0e9, lineHit2 = 1.0e9, te = 0.0;\n bool hit = false;\n for (int i = 0; i < STEPS; i++){\n vec3 p = ro + rd * t;\n float tr, l2;\n float d = map(p, R1, R2, tr, l2);\n if (d < 0.0005 * t){ hit = true; trapHit = tr; lineHit2 = l2; te = t; break; }\n t += d * 0.85;\n if (t > tcap) break;\n }\n\n vec3 col = vec3(0.0);\n\n if (hit){\n vec3 p = ro + rd * te;\n // 4-tap tetrahedron normal (cheaper than 6-tap central difference)\n vec2 k = vec2(1.0, -1.0);\n float e = 0.0013, tr, l2;\n vec3 n = normalize(\n k.xyy * map(p + k.xyy * e, R1, R2, tr, l2) +\n k.yyx * map(p + k.yyx * e, R1, R2, tr, l2) +\n k.yxy * map(p + k.yxy * e, R1, R2, tr, l2) +\n k.xxx * map(p + k.xxx * e, R1, R2, tr, l2));\n\n vec3 body = pal(hue + 0.55 * sqrt(trapHit) + 0.14 * te); // richer colour spread\n vec3 lig = normalize(vec3(0.4, 0.8, 0.45));\n float dif = max(dot(n, lig), 0.0);\n float fres = pow(1.0 - max(dot(n, -rd), 0.0), 2.3);\n\n // bold hot laser lines along the folds (lineHit2 is already squared)\n float laser = 1.0 / (1.0 + 110.0 * lineHit2);\n laser = pow(laser, 1.6);\n vec3 laserCol = mix(vec3(0.9, 0.97, 1.0), body + 0.4, 0.3);\n\n col += body * 0.025; // near-black body\n col += body * dif * 0.07; // faint shading\n col += body * fres * 2.1 * glow; // rim glow -> pops the portal rings\n col += laserCol * laser * 8.0 * glow; // the LASER lines dominate\n // depth fog -> far structure fades into black for clean 3D depth\n col *= exp(-0.20 * max(te - camDist + 3.5, 0.0));\n }\n\n // tone map: hot cores blow to white, halos stay saturated\n col *= 1.08;\n col = col / (1.0 + col);\n col = pow(col, vec3(0.76));\n col *= 1.0 - 0.24 * dot(uv, uv); // vignette\n\n gl_FragColor = vec4(col, 1.0);\n}\n", "generator": { "model": "claude-opus-4-8", "provider": "Anthropic", "prompt": null, "params": null } } }