// This shader renders an intricate raymarched hexagonal Truchet pattern with height-based displacement, elaborate shading, and fractal depth enhancement. // A variety of techniques including Voronoi noise, ambient occlusion, and fake environment mapping are combined with fractal depth for added detail and complexity. precision mediump float; varying vec2 uv; uniform float time, width, height; float heightMap(in vec2 p); float map(vec3 p); vec3 getNormal(vec3 p, inout float edge, inout float crv); float calculateAO(in vec3 p, in vec3 n); float n3D(vec3 p); vec3 envMap(vec3 rd, vec3 sn); vec2 hash22(vec2 p); float Voronoi(in vec2 p); void mainImage(out vec4 fragColor, in vec2 fragCoord); float heightMap(in vec2 p) { p *= 3.0; vec2 h = vec2(p.x + p.y * 0.57735, p.y * 1.1547); vec2 fh = floor(h); vec2 f = h - fh; h = fh; float c = fract((h.x + h.y) / 3.0); h = c < 0.666 ? c < 0.333 ? h : h + 1.0 : h + step(f.yx, f); p -= vec2(h.x - h.y * 0.5, h.y * 0.8660254); c = fract(cos(dot(h, vec2(41, 289))) * 43758.5453); p -= p * step(c, 0.5) * 2.0; p -= vec2(-1, 0); c = dot(p, p); p -= vec2(1.5, 0.8660254); c = min(c, dot(p, p)); p -= vec2(0, -1.73205); c = min(c, dot(p, p)); return sqrt(c); } float fbm(vec3 p) { float f = 0.0; float amp = 0.5; for (int i = 0; i < 6; i++) { f += amp * n3D(p); p *= 2.0; amp *= 0.5; } return f; } float map(vec3 p) { float c = heightMap(p.xy); c = cos(c * 6.2831589) + cos(c * 6.2831589 * 2.0); c = clamp(c * 0.6 + 0.5, 0.0, 1.0); float depth = fbm(p * 1.0); return 1.0 - p.z - c * 0.025 + depth * 0.1; } vec3 getNormal(vec3 p, inout float edge, inout float crv) { vec2 e = vec2(0.01, 0.0); float d1 = map(p + e.xyy), d2 = map(p - e.xyy); float d3 = map(p + e.yxy), d4 = map(p - e.yxy); float d5 = map(p + e.yyx), d6 = map(p - e.yyx); float d = map(p) * 2.0; edge = abs(d1 + d2 - d) + abs(d3 + d4 - d) + abs(d5 + d6 - d); edge = smoothstep(0.0, 1.0, sqrt(edge / e.x * 2.0)); crv = clamp((d1 + d2 + d3 + d4 + d5 + d6 - d * 3.0) * 32.0 + 0.6, 0.0, 1.0); e = vec2(0.0025, 0.0); d1 = map(p + e.xyy), d2 = map(p - e.xyy); d3 = map(p + e.yxy), d4 = map(p - e.yxy); d5 = map(p + e.yyx), d6 = map(p - e.yyx); return normalize(vec3(d1 - d2, d3 - d4, d5 - d6)); } float calculateAO(in vec3 p, in vec3 n) { float sca = 2.0, occ = 0.0; for(float i = 0.0; i < 5.0; i++) { float hr = 0.01 + i * 0.5 / 4.0; float dd = map(n * hr + p); occ += (hr - dd) * sca; sca *= 0.7; } return clamp(1.0 - occ, 0.0, 1.0); } float n3D(vec3 p) { const vec3 s = vec3(7, 157, 113); vec3 ip = floor(p); p -= ip; vec4 h = vec4(0.0, s.yz, s.y + s.z) + dot(ip, s); p = p * p * (3.0 - 2.0 * p); h = mix(fract(sin(mod(h, 6.2831589)) * 43758.5453), fract(sin(mod(h + s.x, 6.2831589)) * 43758.5453), p.x); h.xy = mix(h.xz, h.yw, p.y); return mix(h.x, h.y, p.z); } vec3 envMap(vec3 rd, vec3 sn) { vec3 sRd = rd; rd.xy -= time * 0.25; rd *= 3.0; float c = n3D(rd) * 0.57 + n3D(rd * 2.0) * 0.28 + n3D(rd * 4.0) * 0.15; c = smoothstep(0.4, 1.0, c); vec3 col = vec3(c, c * c, c * c * c * c); return mix(col, col.yzx, sRd * 0.25 + 0.25); } vec2 hash22(vec2 p) { float n = sin(mod(dot(p, vec2(41, 289)), 6.2831589)); return fract(vec2(262144, 32768) * n) * 0.75 + 0.25; } float Voronoi(in vec2 p) { vec2 g = floor(p), o; p -= g; vec3 d = vec3(1.0); for(int y = -1; y <= 1; y++) { for(int x = -1; x <= 1; x++) { o = vec2(float(x), float(y)); o += hash22(g + o) - p; d.z = dot(o, o); d.y = max(d.x, min(d.y, d.z)); d.x = min(d.x, d.z); } } return max(d.y / 1.2 - d.x * 1.0, 0.0) / 1.2; } void mainImage(out vec4 fragColor, in vec2 fragCoord) { vec2 resolution = vec2(width, height); vec3 rd = normalize(vec3(2.0 * fragCoord - resolution.xy, resolution.y)); float tm = time / 2.0; vec2 a = sin(vec2(1.570796, 0.0) + sin(tm / 4.0) * 0.3); rd.xy = mat2(a, -a.y, a.x) * rd.xy; vec3 ro = vec3(tm, cos(tm / 4.0), 0.0); vec3 lp = ro + vec3(cos(tm / 2.0) * 0.5, sin(tm / 2.0) * 0.5, -0.5); float d, t = 0.0; for(int j = 0; j < 32; j++) { d = map(ro + rd * t); t += d * 0.7; if(d < 0.001) break; } float edge, crv; vec3 sp = ro + rd * t; vec3 sn = getNormal(sp, edge, crv); vec3 ld = lp - sp; float c = heightMap(sp.xy); vec3 fold = cos(vec3(1.0, 2.0, 4.0) * c * 6.2831589); float c2 = heightMap((sp.xy + sp.z * 0.025) * 6.0); c2 = cos(c2 * 6.2831589 * 3.0); c2 = clamp(c2 + 0.5, 0.0, 1.0); vec3 oC = vec3(1.0); if(fold.x > 0.0) oC = vec3(1.0, 0.05, 0.1) * c2; if(fold.x < 0.05 && (fold.y) < 0.0) oC = vec3(1.0, 0.7, 0.45) * (c2 * 0.25 + 0.75); else if(fold.x < 0.0) oC = vec3(1.0, 0.8, 0.4) * c2; float p1 = 1.0 - smoothstep(0.0, 0.1, fold.x * 0.5 + 0.5); float p2 = 1.0 - smoothstep(0.0, 0.1, Voronoi(sp.xy * 4.0 + vec2(tm, cos(tm / 4.0)))); p1 = (p2 + 0.25) * p1; oC += oC.yzx * p1 * p1; float lDist = max(length(ld), 0.001); float atten = 1.0 / (1.0 + lDist * 0.125); ld /= lDist; float diff = max(dot(ld, sn), 0.0); float spec = pow(max(dot(reflect(-ld, sn), -rd), 0.0), 16.0); float fre = pow(clamp(dot(sn, rd) + 1.0, 0.0, 1.0), 3.0); crv = crv * 0.9 + 0.1; float ao = calculateAO(sp, sn); vec3 col = oC * (diff + 0.5) + vec3(1.0, 0.7, 0.4) * spec * 2.0 + vec3(0.4, 0.7, 1.0) * fre; col += (oC * 0.5 + 0.5) * envMap(reflect(rd, sn), sn) * 6.0; col *= 1.0 - edge * 0.85; col *= (atten * crv * ao); fragColor = vec4(sqrt(clamp(col, 0.0, 1.0)), 1.0); } void main() { vec2 fragCoord = vec2((uv.x - 0.5) * max(width / height, 1.0) + 0.5, (uv.y - 0.5) * max(height / width, 1.0) + 0.5); vec4 color; mainImage(color, fragCoord * vec2(width, height)); gl_FragColor = color; }

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Focal Glow

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Wood grain

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Fractal Depth

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FAST TRAVELLING Increased Speed

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TARDIS Chameleon-Circuit

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tesseract effect Hypercube shadows

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Sublime Luminosity

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