diff options
Diffstat (limited to 'intern/cycles/kernel/shaders/node_texture.h')
| -rw-r--r-- | intern/cycles/kernel/shaders/node_texture.h | 210 |
1 files changed, 105 insertions, 105 deletions
diff --git a/intern/cycles/kernel/shaders/node_texture.h b/intern/cycles/kernel/shaders/node_texture.h index 88305fb320f..e1f3b900ee5 100644 --- a/intern/cycles/kernel/shaders/node_texture.h +++ b/intern/cycles/kernel/shaders/node_texture.h @@ -18,148 +18,148 @@ color cellnoise_color(point p) { - float r = cellnoise(p); - float g = cellnoise(point(p[1], p[0], p[2])); - float b = cellnoise(point(p[1], p[2], p[0])); + float r = cellnoise(p); + float g = cellnoise(point(p[1], p[0], p[2])); + float b = cellnoise(point(p[1], p[2], p[0])); - return color(r, g, b); + return color(r, g, b); } void voronoi(point p, float e, float da[4], point pa[4]) { - /* returns distances in da and point coords in pa */ - int xx, yy, zz, xi, yi, zi; - - xi = (int)floor(p[0]); - yi = (int)floor(p[1]); - zi = (int)floor(p[2]); - - da[0] = 1e10; - da[1] = 1e10; - da[2] = 1e10; - da[3] = 1e10; - - for (xx = xi - 1; xx <= xi + 1; xx++) { - for (yy = yi - 1; yy <= yi + 1; yy++) { - for (zz = zi - 1; zz <= zi + 1; zz++) { - point ip = point(xx, yy, zz); - point vp = (point)cellnoise_color(ip); - point pd = p - (vp + ip); - float d = dot(pd, pd); - - vp += point(xx, yy, zz); - - if (d < da[0]) { - da[3] = da[2]; - da[2] = da[1]; - da[1] = da[0]; - da[0] = d; - - pa[3] = pa[2]; - pa[2] = pa[1]; - pa[1] = pa[0]; - pa[0] = vp; - } - else if (d < da[1]) { - da[3] = da[2]; - da[2] = da[1]; - da[1] = d; - - pa[3] = pa[2]; - pa[2] = pa[1]; - pa[1] = vp; - } - else if (d < da[2]) { - da[3] = da[2]; - da[2] = d; - - pa[3] = pa[2]; - pa[2] = vp; - } - else if (d < da[3]) { - da[3] = d; - pa[3] = vp; - } - } - } - } + /* returns distances in da and point coords in pa */ + int xx, yy, zz, xi, yi, zi; + + xi = (int)floor(p[0]); + yi = (int)floor(p[1]); + zi = (int)floor(p[2]); + + da[0] = 1e10; + da[1] = 1e10; + da[2] = 1e10; + da[3] = 1e10; + + for (xx = xi - 1; xx <= xi + 1; xx++) { + for (yy = yi - 1; yy <= yi + 1; yy++) { + for (zz = zi - 1; zz <= zi + 1; zz++) { + point ip = point(xx, yy, zz); + point vp = (point)cellnoise_color(ip); + point pd = p - (vp + ip); + float d = dot(pd, pd); + + vp += point(xx, yy, zz); + + if (d < da[0]) { + da[3] = da[2]; + da[2] = da[1]; + da[1] = da[0]; + da[0] = d; + + pa[3] = pa[2]; + pa[2] = pa[1]; + pa[1] = pa[0]; + pa[0] = vp; + } + else if (d < da[1]) { + da[3] = da[2]; + da[2] = da[1]; + da[1] = d; + + pa[3] = pa[2]; + pa[2] = pa[1]; + pa[1] = vp; + } + else if (d < da[2]) { + da[3] = da[2]; + da[2] = d; + + pa[3] = pa[2]; + pa[2] = vp; + } + else if (d < da[3]) { + da[3] = d; + pa[3] = vp; + } + } + } + } } /* Noise Bases */ float safe_noise(point p, string type) { - float f = 0.0; + float f = 0.0; - /* Perlin noise in range -1..1 */ - if (type == "signed") - f = noise("perlin", p); + /* Perlin noise in range -1..1 */ + if (type == "signed") + f = noise("perlin", p); - /* Perlin noise in range 0..1 */ - else - f = noise(p); + /* Perlin noise in range 0..1 */ + else + f = noise(p); - /* can happen for big coordinates, things even out to 0.5 then anyway */ - if (!isfinite(f)) - return 0.5; + /* can happen for big coordinates, things even out to 0.5 then anyway */ + if (!isfinite(f)) + return 0.5; - return f; + return f; } /* Turbulence */ float noise_turbulence(point p, float details, int hard) { - float fscale = 1.0; - float amp = 1.0; - float sum = 0.0; - int i, n; + float fscale = 1.0; + float amp = 1.0; + float sum = 0.0; + int i, n; - float octaves = clamp(details, 0.0, 16.0); - n = (int)octaves; + float octaves = clamp(details, 0.0, 16.0); + n = (int)octaves; - for (i = 0; i <= n; i++) { - float t = safe_noise(fscale * p, "unsigned"); + for (i = 0; i <= n; i++) { + float t = safe_noise(fscale * p, "unsigned"); - if (hard) - t = fabs(2.0 * t - 1.0); + if (hard) + t = fabs(2.0 * t - 1.0); - sum += t * amp; - amp *= 0.5; - fscale *= 2.0; - } + sum += t * amp; + amp *= 0.5; + fscale *= 2.0; + } - float rmd = octaves - floor(octaves); + float rmd = octaves - floor(octaves); - if (rmd != 0.0) { - float t = safe_noise(fscale * p, "unsigned"); + if (rmd != 0.0) { + float t = safe_noise(fscale * p, "unsigned"); - if (hard) - t = fabs(2.0 * t - 1.0); + if (hard) + t = fabs(2.0 * t - 1.0); - float sum2 = sum + t * amp; + float sum2 = sum + t * amp; - sum *= ((float)(1 << n) / (float)((1 << (n + 1)) - 1)); - sum2 *= ((float)(1 << (n + 1)) / (float)((1 << (n + 2)) - 1)); + sum *= ((float)(1 << n) / (float)((1 << (n + 1)) - 1)); + sum2 *= ((float)(1 << (n + 1)) / (float)((1 << (n + 2)) - 1)); - return (1.0 - rmd) * sum + rmd * sum2; - } - else { - sum *= ((float)(1 << n) / (float)((1 << (n + 1)) - 1)); - return sum; - } + return (1.0 - rmd) * sum + rmd * sum2; + } + else { + sum *= ((float)(1 << n) / (float)((1 << (n + 1)) - 1)); + return sum; + } } /* Utility */ float nonzero(float f, float eps) { - float r; + float r; - if (abs(f) < eps) - r = sign(f) * eps; - else - r = f; + if (abs(f) < eps) + r = sign(f) * eps; + else + r = f; - return r; + return r; } |