http://blenderartists.org/forum/showthread.php?329295-Bevel-shader
сделать текстовый блок, воткнуть его в нод-едиторе материалов в нормаль шейдера. настройки в принципе более менее понятные.
void rng_seed(output int rng, int seed) { int chash = seed; if (chash == 0) chash = 1; rng = chash * 30391861; } float rng_uniform(output int rng) { float res = rng / float(2137483647) * 0.5 + 0.5; rng *= 30391861; return res; } void to_unit_disk(float x, float y, output float x_out, output float y_out) { float r, phi; float a = 2.0 * x - 1.0; float b = 2.0 * y - 1.0; if(a > -b) { if(a > b) { r = a; phi = M_PI_4 *(b/a); } else { r = b; phi = M_PI_4 *(2.0 - a/b); } } else { if(a < b) { r = -a; phi = M_PI_4 *(4.0 + b/a); } else { r = -b; if(b != 0.0) phi = M_PI_4 *(6.0 - a/b); else phi = 0.0; } } x_out = r * cos(phi); y_out = r * sin(phi); } void make_orthonormals(vector N, output vector a, output vector b) { if(N[0] != N[1] || N[0] != N[2]) a = cross(vector(1, 1, 1), N); else a = cross(vector(-1, 1, 1), N); a = normalize(a); b = cross(N, a); } vector sample_cos_hemisphere(vector N, float randu, float randv) { vector T, B; make_orthonormals(N, T, B); to_unit_disk(randu, randv, randu, randv); float costheta = sqrt(max(1.0 - randu * randu - randv * randv, 0.0)); return randu * T + randv * B + costheta * N; } shader edge_smooth( int Concave = 1, int Convex = 1, int Samples = 4, int Backfacing = 1, float Mask = 1, float Distance = 0.1, normal Normal = N, output normal outNormal = 0 ) { int i, rng; float f, randu, randv, ray_t, hits = 0; vector ray_P, ray_R; normal hit_normal = N; outNormal = Normal; float hit_dist; float normal_blend; float s_weight = 1/Samples; f = fmod(cellnoise(P*123456.0), 1.0); rng_seed(rng, int(f * 21374647)); if (Mask > 0.5 && raytype("camera")) { for(i = 0; i < Samples; i++) { randu = rng_uniform(rng); randv = rng_uniform(rng); ray_P = P; ray_R = sample_cos_hemisphere(-N, randu, randv); ray_t = Distance; if (Concave == 1) { if(trace(ray_P, -ray_R, "maxdist", ray_t)) { getmessage ("trace", "N", hit_normal); getmessage ("trace", "hitdist", hit_dist); normal_blend = 1-(hit_dist/Distance); outNormal = Normal + (hit_normal*normal_blend); break; } } if (Convex == 1) { if(trace(ray_P, ray_R, "maxdist", ray_t)) { getmessage ("trace", "N", hit_normal); getmessage ("trace", "hitdist", hit_dist); normal_blend = 1-(hit_dist/Distance); if (Backfacing==1 || dot(I, -hit_normal) > 0.0) { outNormal = Normal - (hit_normal*normal_blend); } break; } } } } outNormal = normalize(outNormal); }
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