#define I_MAX 70 precision highp float; precision highp int; uniform vec2 resolution; varying vec2 vUv; varying float iTime; float rand(vec2 n) { return fract(sin((n.x * 1e2 + n.y * 1e4 + 1475.4526) * 1e-4) * 1e6); } float noise(vec2 p) { p = floor(p * 200.0); return rand(p); } vec3 polygonXY(float z, vec2 vert1, vec2 vert2, vec3 camPos, vec3 rayDir) { float t = -(camPos.z - z) / rayDir.z; vec2 cross = camPos.xy + rayDir.xy * t; if (cross.x > min(vert1.x, vert2.x) && cross.x < max(vert1.x, vert2.x) && cross.y > min(vert1.y, vert2.y) && cross.y < max(vert1.y, vert2.y) && dot(rayDir, vec3(cross, z) - camPos) > 0.0) { float dist = length(camPos - vec3(cross, z)); return vec3(dist, cross.x - min(vert1.x, vert2.x), cross.y - min(vert1.y, vert2.y)); } return vec3(101.0, 0.0, 0.0); } vec3 polygonYZ(float x, vec2 vert1, vec2 vert2, vec3 camPos, vec3 rayDir) { float t = -(camPos.x - x) / rayDir.x; vec2 cross1 = camPos.yz + rayDir.yz * t; if (cross1.x > min(vert1.x, vert2.x) && cross1.x < max(vert1.x, vert2.x) && cross1.y > min(vert1.y, vert2.y) && cross1.y < max(vert1.y, vert2.y) && dot(rayDir, vec3(x, cross1) - camPos) > 0.0) { float dist = length(camPos - vec3(x, cross1)); return vec3(dist, cross1.x - min(vert1.x, vert2.x), cross1.y - min(vert1.y, vert2.y)); } return vec3(101.0, 0.0, 0.0); } vec3 polygonXZ(float y, vec2 vert1, vec2 vert2, vec3 camPos, vec3 rayDir) { float t = -(camPos.y - y) / rayDir.y; vec2 cross1 = camPos.xz + rayDir.xz * t; if (cross1.x > min(vert1.x, vert2.x) && cross1.x < max(vert1.x, vert2.x) && cross1.y > min(vert1.y, vert2.y) && cross1.y < max(vert1.y, vert2.y) && dot(rayDir, vec3(cross1.x, y, cross1.y) - camPos) > 0.0) { float dist = length(camPos - vec3(cross1.x, y, cross1.y)); return vec3(dist, cross1.x - min(vert1.x, vert2.x), cross1.y - min(vert1.y, vert2.y)); } return vec3(101.0, 0.0, 0.0); } vec3 textureWall(vec2 pos, vec2 maxPos, vec2 squarer, float s, float height, float dist, vec3 rayDir, vec3 norm) { float randB = rand(squarer * 2.0); vec3 windowColor = (-0.4 + randB * 0.8) * vec3(0.3, 0.3, 0.0) + (-0.4 + fract(randB * 10.0) * 0.8) * vec3(0.0, 0.0, 0.3) + (-0.4 + fract(randB * 10000.0) * 0.8) * vec3(0.3, 0.0, 0.0); float floorFactor = 1.0; vec2 windowSize = vec2(0.65, 0.35); vec3 wallColor = s * (0.3 + 1.4 * fract(randB * 100.0)) * vec3(0.1, 0.1, 0.1) + (-0.7 + 1.4 * fract(randB * 1000.0)) * vec3(0.02, 0., 0.); wallColor *= 1.3; vec3 color = vec3(0.0); vec3 conturColor = wallColor / 1.5; if (height < 0.51) { windowColor += vec3(0.3, 0.3, 0.0); windowSize = vec2(0.4, 0.4); floorFactor = 0.0; } if (height < 0.6) { floorFactor = 0.0; } if (height > 0.75) { windowColor += vec3(0.0, 0.0, 0.3); } windowColor *= 1.5; float wsize = 0.02; wsize += -0.007 + 0.014 * fract(randB * 75389.9365); windowSize += vec2(0.34 * fract(randB * 45696.9365), 0.50 * fract(randB * 853993.5783)); vec2 contur = vec2(0.0) + fract(maxPos / 2.0 / wsize) * wsize; if (contur.x < wsize) { contur.x += wsize; } if (contur.y < wsize) { contur.y += wsize; } vec2 winPos = (pos - contur) / wsize / 2.0 - floor((pos - contur) / wsize / 2.0); float numWin = floor((maxPos - contur) / wsize / 2.0).x; if ((maxPos.x > 0.5 && maxPos.x < 0.6) && (((pos - contur).x > wsize * 2.0 * floor(numWin / 2.0)) && ((pos - contur).x < wsize * 2.0 + wsize * 2.0 * floor(numWin / 2.0)))) { return (0.9 + 0.2 * noise(pos)) * conturColor; } if ((maxPos.x > 0.6 && maxPos.x < 0.7) && ((((pos - contur).x > wsize * 2.0 * floor(numWin / 3.0)) && ((pos - contur).x < wsize * 2.0 + wsize * 2.0 * floor(numWin / 3.0))) || (((pos - contur).x > wsize * 2.0 * floor(numWin * 2.0 / 3.0)) && ((pos - contur).x < wsize * 2.0 + wsize * 2.0 * floor(numWin * 2.0 / 3.0))))) { return (0.9 + 0.2 * noise(pos)) * conturColor; } if ((maxPos.x > 0.7) && ((((pos - contur).x > wsize * 2.0 * floor(numWin / 4.0)) && ((pos - contur).x < wsize * 2.0 + wsize * 2.0 * floor(numWin / 4.0))) || (((pos - contur).x > wsize * 2.0 * floor(numWin * 2.0 / 4.0)) && ((pos - contur).x < wsize * 2.0 + wsize * 2.0 * floor(numWin * 2.0 / 4.0))) || (((pos - contur).x > wsize * 2.0 * floor(numWin * 3.0 / 4.0)) && ((pos - contur).x < wsize * 2.0 + wsize * 2.0 * floor(numWin * 3.0 / 4.0))))) { return (0.9 + 0.2 * noise(pos)) * conturColor; } if ((maxPos.x - pos.x < contur.x) || (maxPos.y - pos.y < contur.y + 2.0 * wsize) || (pos.x < contur.x) || (pos.y < contur.y)) { return (0.9 + 0.2 * noise(pos)) * conturColor; } if (maxPos.x < 0.14) { return (0.9 + 0.2 * noise(pos)) * wallColor; } vec2 window = floor((pos - contur) / wsize / 2.0); float random = rand(squarer * s * maxPos.y + window); float randomZ = rand(squarer * s * maxPos.y + floor(vec2((pos - contur).y, (pos - contur).y) / wsize / 2.0)); float windows = floorFactor * sin(randomZ * 5342.475379 + (fract(975.568 * randomZ) * 0.15 + 0.05) * window.x); float blH = 0.06 * dist * 600.0 / resolution.x / abs(dot(normalize(rayDir.xy), normalize(norm.xy))); float blV = 0.06 * dist * 600.0 / resolution.x / sqrt(abs(1.0 - pow(abs(rayDir.z), 2.0))); windowColor += vec3(1.0, 1.0, 1.0); windowColor *= smoothstep(0.5 - windowSize.x / 2.0 - blH, 0.5 - windowSize.x / 2.0 + blH, winPos.x); windowColor *= smoothstep(0.5 + windowSize.x / 2.0 + blH, 0.5 + windowSize.x / 2.0 - blH, winPos.x); windowColor *= smoothstep(0.5 - windowSize.y / 2.0 - blV, 0.5 - windowSize.y / 2.0 + blV, winPos.y); windowColor *= smoothstep(0.5 + windowSize.y / 2.0 + blV, 0.5 + windowSize.y / 2.0 - blV, winPos.y); if ((random < 0.05 * (3.5 - 2.5 * floorFactor)) || (windows > 0.65)) { if (winPos.y < 0.5) { windowColor *= (1.0 - 0.4 * fract(random * 100.0)); } if ((winPos.y > 0.5) && (winPos.x < 0.5)) { windowColor *= (1.0 - 0.4 * fract(random * 10.0)); } return (0.9 + 0.2 * noise(pos)) * wallColor + (0.9 + 0.2 * noise(pos)) * windowColor; } else { windowColor *= 0.08 * fract(10.0 * random); } return (0.9 + 0.2 * noise(pos)) * wallColor + windowColor; } vec3 textureRoof(vec2 pos, vec2 maxPos, vec2 squarer) { float wsize = 0.025; float randB = rand(squarer * 2.0); vec3 wallColor = (0.3 + 1.4 * fract(randB * 100.0)) * vec3(0.1, 0.1, 0.1) + (-0.7 + 1.4 * fract(randB * 1000.0)) * vec3(0.02, 0., 0.); vec3 conturColor = wallColor * 1.5 / 2.5; vec2 contur = vec2(0.02); if ((maxPos.x - pos.x < contur.x) || (maxPos.y - pos.y < contur.y) || (pos.x < contur.x) || (pos.y < contur.y)) { return (0.9 + 0.2 * noise(pos)) * conturColor; } float step1 = 0.06 + 0.12 * fract(randB * 562526.2865); pos -= step1; maxPos -= step1 * 2.0; if ((pos.x > 0.0 && pos.y > 0.0 && pos.x < maxPos.x && pos.y < maxPos.y) && ((abs(maxPos.x - pos.x) < contur.x) || (abs(maxPos.y - pos.y) < contur.y) || (abs(pos.x) < contur.x) || (abs(pos.y) < contur.y))) { return (0.9 + 0.2 * noise(pos)) * conturColor; } pos -= step1; maxPos -= step1 * 2.0; if ((pos.x > 0.0 && pos.y > 0.0 && pos.x < maxPos.x && pos.y < maxPos.y) && ((abs(maxPos.x - pos.x) < contur.x) || (abs(maxPos.y - pos.y) < contur.y) || (abs(pos.x) < contur.x) || (abs(pos.y) < contur.y))) { return (0.9 + 0.2 * noise(pos)) * conturColor; } pos -= step1; maxPos -= step1 * 2.0; if ((pos.x > 0.0 && pos.y > 0.0 && pos.x < maxPos.x && pos.y < maxPos.y) && ((abs(maxPos.x - pos.x) < contur.x) || (abs(maxPos.y - pos.y) < contur.y) || (abs(pos.x) < contur.x) || (abs(pos.y) < contur.y))) { return (0.9 + 0.2 * noise(pos)) * conturColor; } return (0.9 + 0.2 * noise(pos)) * wallColor; } vec3 cars(vec2 squarer, vec2 pos, float dist, float level) { vec3 color = vec3(0.0); float carInten = 3.5 / sqrt(dist); float carRadis = 0.01; if (dist > 2.0) { carRadis *= sqrt(dist / 2.0); } vec3 car1 = vec3(0.5, 0.5, 1.0); vec3 car2 = vec3(1.0, 0.1, 0.1); float carNumber = 0.5; float random = noise((level + 1.0) * squarer * 1.24435824); for (int j = 0; j < 10; j++) { float i = 0.03 + float(j) * 0.094; if (fract(random * 5.0 / i) > carNumber) { color += car1 * carInten * smoothstep(carRadis, 0.0, length(pos - vec2(fract(i + iTime / 4.0), 0.025))); } if (fract(random * 10.0 / i) > carNumber) { color += car2 * carInten * smoothstep(carRadis, 0.0, length(pos - vec2(fract(i - iTime / 4.0), 0.975))); } if (color.x > 0.0) break; } for (int j = 0; j < 10; j++) { float i = 0.03 + float(j) * 0.094; if (fract(random * 5.0 / i) > carNumber) { color += car2 * carInten * smoothstep(carRadis, 0.0, length(pos - vec2(0.025, fract(i + iTime / 4.0)))); } if (fract(random * 10.0 / i) > carNumber) { color += car1 * carInten * smoothstep(carRadis, 0.0, length(pos - vec2(0.975, fract(i - iTime / 4.0)))); } if (color.x > 0.0) break; } for (int j = 0; j < 10; j++) { float i = 0.03 + 0.047 + float(j) * 0.094; if (fract(random * 100.0 / i) > carNumber) { color += car1 * carInten * smoothstep(carRadis, 0.0, length(pos - vec2(fract(i + iTime / 4.0), 0.045))); } if (fract(random * 1000.0 / i) > carNumber) { color += car2 * carInten * smoothstep(carRadis, 0.0, length(pos - vec2(fract(i - iTime / 4.0), 0.955))); } if (color.x > 0.0) break; } for (int j = 0; j < 10; j++) { float i = 0.03 + 0.047 + float(j) * 0.094; if (fract(random * 100.0 / i) > carNumber) { color += car2 * carInten * smoothstep(carRadis, 0.0, length(pos - vec2(0.045, fract(i + iTime / 4.0)))); } if (fract(random * 1000.0 / i) > carNumber) { color += car1 * carInten * smoothstep(carRadis, 0.0, length(pos - vec2(0.955, fract(i - iTime / 4.0)))); } if (color.x > 0.0) break; } return color; } vec3 textureGround(vec2 squarer, vec2 pos, vec2 vert1, vec2 vert2, float dist) { vec3 color = (0.9 + 0.2 * noise(pos)) * vec3(0.1, 0.15, 0.1); float randB = rand(squarer * 2.0); vec3 wallColor = (0.3 + 1.4 * fract(randB * 100.0)) * vec3(0.1, 0.1, 0.1) + (-0.7 + 1.4 * fract(randB * 1000.0)) * vec3(0.02, 0., 0.); float fund = 0.03; float bl = 0.01; float f = smoothstep(vert1.x - fund - bl, vert1.x - fund, pos.x); f *= smoothstep(vert1.y - fund - bl, vert1.y - fund, pos.y); f *= smoothstep(vert2.y + fund + bl, vert2.y + fund, pos.y); f *= smoothstep(vert2.x + fund + bl, vert2.x + fund, pos.x); pos -= 0.0; vec2 maxPos = vec2(1., 1.); vec2 contur = vec2(0.06, 0.06); if ((pos.x > 0.0 && pos.y > 0.0 && pos.x < maxPos.x && pos.y < maxPos.y) && ((abs(maxPos.x - pos.x) < contur.x) || (abs(maxPos.y - pos.y) < contur.y) || (abs(pos.x) < contur.x) || (abs(pos.y) < contur.y))) { color = vec3(0.1, 0.1, 0.1) * (0.9 + 0.2 * noise(pos)); } pos -= 0.06; maxPos = vec2(.88, 0.88); contur = vec2(0.01, 0.01); if ((pos.x > 0.0 && pos.y > 0.0 && pos.x < maxPos.x && pos.y < maxPos.y) && ((abs(maxPos.x - pos.x) < contur.x) || (abs(maxPos.y - pos.y) < contur.y) || (abs(pos.x) < contur.x) || (abs(pos.y) < contur.y))) { color = vec3(0., 0., 0.); } color = mix(color, (0.9 + 0.2 * noise(pos)) * wallColor * 1.5 / 2.5, f); pos += 0.06; return color; } void main() { vec2 pos = (vUv.xy * 2.0 - resolution.xy) / resolution.y; float t = -iTime; float tt = -iTime - 0.5; vec3 camPos = vec3(5.0 + 12.0 * sin(t * 0.05), 5.0 + 7.0 * cos(t * 0.05), 1.9); vec3 camTarget = vec3(5.0 + 0.0, 5.0 + 7.0 * sin(t * 0.05), 0.0); if (fract(t / 12.0) < 0.25) { camPos = vec3(5. * t, 3.1 * t, 2.1); camTarget = vec3(5. * tt, 3.1 * tt, 1.7); } if (fract(t / 12.0) > 0.75) { camPos = vec3(35., 3.1, 1.); camTarget = vec3(35. + sin(t / 10.0), 3.1 + cos(t / 10.0), 0.7); } vec3 camDir = normalize(camTarget - camPos); vec3 camUp = normalize(vec3(0.0, 0.0, -1.0)); vec3 camSide = cross(camDir, camUp); camUp = cross(camDir, camSide); vec3 rayDir = normalize(camSide * pos.x + camUp * pos.y + camDir * 1.6); float angle = 0.03 * pow(abs(acos(rayDir.x)), 4.0); vec3 color = vec3(0.0); vec2 square = floor(camPos.xy); square.x += 0.5 - 0.5 * sign(rayDir.x); square.y += 0.5 - 0.5 * sign(rayDir.y); float mind = 100.0; int k = 0; vec3 pol; vec2 maxPos; vec2 crossG; float tSky = -(camPos.z - 3.9) / rayDir.z; vec2 crossSky = floor(camPos.xy + rayDir.xy * tSky); for (int i = 1; i < I_MAX; i++) { vec2 squarer = square - vec2(0.5, 0.5) + 0.5 * sign(rayDir.xy); if (crossSky == squarer && crossSky != floor(camPos.xy)) { color += vec3(vec2(0.5, 0.15) * abs(angle) * exp(-rayDir.z * rayDir.z * 30.0), 0.2); break; } float t; float random = rand(squarer); float height = 0.0; float quartalR = rand(floor(squarer / 10.0)); if (floor(squarer / 10.0) == vec2(0.0, 0.0)) quartalR = 0.399; if (quartalR < 0.4) { height = -0.15 + 0.4 * random + smoothstep(12.0, 7.0, length(fract(squarer / 10.0) * 10.0 - vec2(5.0, 5.0))) * 0.8 * random + 0.9 * smoothstep(10.0, 0.0, length(fract(squarer / 10.0) * 10.0 - vec2(5.0, 5.0))); height *= quartalR / 0.4; } float maxJ = 2.0; float roof = 1.0; if (height < 0.3) { height = 0.3 * (0.7 + 1.8 * fract(random * 100.543264)); maxJ = 2.0; if (fract(height * 1000.0) < 0.04) height *= 1.3; } if (height > 0.5) { maxJ = 3.0; } if (height > 0.85) { maxJ = 4.0; } if (fract(height * 100.0) < 0.15) { height = pow(maxJ - 1.0, 0.3) * height; maxJ = 2.0; roof = 0.0; } float maxheight = 1.5 * pow((maxJ - 1.0), 0.3) * height + roof * 0.07; if (camPos.z + rayDir.z * (length(camPos.xy - square) + 0.71 - sign(rayDir.z) * 0.71) / length(rayDir.xy) < maxheight) { vec2 vert1r; vec2 vert2r; float zz = 0.0; float prevZZ = 0.0; for (int nf = 1; nf < 8; nf++) { float j = float(nf); if (j > maxJ) { break; } prevZZ = zz; zz = 1.5 * pow(j, 0.3) * height; float dia = 1.0 / pow(j, 0.3); if (j == maxJ) { if (roof == 0.0) { break; } zz = 1.5 * pow((j - 1.0), 0.3) * height + 0.03 + 0.04 * fract(random * 1535.347); dia = 1.0 / pow((j - 1.0), 0.3) - 0.2 - 0.2 * fract(random * 10000.0); } vec2 v1 = vec2(0.0); vec2 v2 = vec2(0.0); float randomF = fract(random * 10.0); if (randomF < 0.25) { v1 = vec2(fract(random * 1000.0), fract(random * 100.0)); } if (randomF > 0.25 && randomF < 0.5) { v1 = vec2(fract(random * 100.0), 0.0); v2 = vec2(0.0, fract(random * 1000.0)); } if (randomF > 0.5 && randomF < 0.75) { v2 = vec2(fract(random * 1000.0), fract(random * 100.0)); } if (randomF > 0.75) { v1 = vec2(0.0, fract(random * 1000.0)); v2 = vec2(fract(random * 100.0), 0.0); } if (rayDir.y < 0.0) { float y = v1.y; v1.y = v2.y; v2.y = y; } if (rayDir.x < 0.0) { float x = v1.x; v1.x = v2.x; v2.x = x; } vec2 vert1 = square + sign(rayDir.xy) * (0.5 - 0.37 * (dia * 1.0 - 1.0 * v1)); vec2 vert2 = square + sign(rayDir.xy) * (0.5 + 0.37 * (dia * 1.0 - 1.0 * v2)); if (j == 1.0) { vert1r = vec2(min(vert1.x, vert2.x), min(vert1.y, vert2.y)); vert2r = vec2(max(vert1.x, vert2.x), max(vert1.y, vert2.y)); } vec3 pxy = polygonXY(zz, vert1, vert2, camPos, rayDir); if (pxy.x < mind) { mind = pxy.x; pol = pxy; k = 1; maxPos = vec2(abs(vert1.x - vert2.x), abs(vert1.y - vert2.y)); } vec3 pyz = polygonYZ(vert1.x, vec2(vert1.y, prevZZ), vec2(vert2.y, zz), camPos, rayDir); if (pyz.x < mind) { mind = pyz.x; pol = pyz; k = 2; maxPos = vec2(abs(vert1.y - vert2.y), zz - prevZZ); } vec3 pxz = polygonXZ(vert1.y, vec2(vert1.x, prevZZ), vec2(vert2.x, zz), camPos, rayDir); if (pxz.x < mind) { mind = pxz.x; pol = pxz; k = 3; maxPos = vec2(abs(vert1.x - vert2.x), zz - prevZZ); } } if ((mind < 100.0) && (k == 1)) { color += textureRoof(vec2(pol.y, pol.z), maxPos, squarer); if (mind > 3.0) { color *= sqrt(3.0 / mind); } break; } if ((mind < 100.0) && (k == 2)) { color += textureWall(vec2(pol.y, pol.z), maxPos, squarer, 1.2075624928, height, mind, rayDir, vec3(1.0, 0.0, 0.0)); if (mind > 3.0) { color *= sqrt(3.0 / mind); } break; } if ((mind < 100.0) && (k == 3)) { color += textureWall(vec2(pol.y, pol.z), maxPos, squarer, 0.8093856205, height, mind, rayDir, vec3(0.0, 1.0, 0.0)); if (mind > 3.0) { color *= sqrt(3.0 / mind); } break; } t = -camPos.z / rayDir.z; crossG = camPos.xy + rayDir.xy * t; if (floor(crossG) == squarer) { mind = length(vec3(crossG, 0.0) - camPos); color += textureGround(squarer, fract(crossG), fract(vert1r), fract(vert2r), mind); if (mind > 3.0) { color *= sqrt(3.0 / mind); } break; } } if ((square.x + sign(rayDir.x) - camPos.x) / rayDir.x < (square.y + sign(rayDir.y) - camPos.y) / rayDir.y) { square.x += sign(rayDir.x) * 1.0; } else { square.y += sign(rayDir.y) * 1.0; } if (i == I_MAX - 1 && rayDir.z > -0.1) { color += vec3(vec2(0.5, 0.15) * abs(angle) * exp(-rayDir.z * rayDir.z * 30.0), 0.2); } } gl_FragColor = vec4(color, 1.0); ; }

liuliangjun's Shaders (1)