forked from bartvdbraak/blender
Cycles / OSL:
* Fix for r53689, there are two noise types, signed and unsigned. Caused Musgrave Texture to render differently compared to SVM backend.
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@ -37,14 +37,14 @@ float noise_musgrave_fBm(point p, string basis, float H, float lacunarity, float
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int i;
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for (i = 0; i < (int)octaves; i++) {
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value += safe_noise(p) * pwr;
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value += safe_noise(p, 0) * pwr;
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pwr *= pwHL;
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p *= lacunarity;
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}
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rmd = octaves - floor(octaves);
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if (rmd != 0.0)
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value += rmd * safe_noise(p) * pwr;
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value += rmd * safe_noise(p, 0) * pwr;
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return value;
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}
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@ -65,14 +65,14 @@ float noise_musgrave_multi_fractal(point p, string basis, float H, float lacunar
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int i;
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for (i = 0; i < (int)octaves; i++) {
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value *= (pwr * safe_noise(p) + 1.0);
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value *= (pwr * safe_noise(p, 0) + 1.0);
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pwr *= pwHL;
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p *= lacunarity;
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}
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rmd = octaves - floor(octaves);
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if (rmd != 0.0)
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value *= (rmd * pwr * safe_noise(p) + 1.0); /* correct? */
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value *= (rmd * pwr * safe_noise(p, 0) + 1.0); /* correct? */
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return value;
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}
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@ -93,11 +93,11 @@ float noise_musgrave_hetero_terrain(point p, string basis, float H, float lacuna
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int i;
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/* first unscaled octave of function; later octaves are scaled */
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value = offset + safe_noise(p);
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value = offset + safe_noise(p, 0);
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p *= lacunarity;
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for (i = 1; i < (int)octaves; i++) {
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increment = (safe_noise(p) + offset) * pwr * value;
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increment = (safe_noise(p, 0) + offset) * pwr * value;
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value += increment;
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pwr *= pwHL;
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p *= lacunarity;
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@ -105,7 +105,7 @@ float noise_musgrave_hetero_terrain(point p, string basis, float H, float lacuna
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rmd = octaves - floor(octaves);
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if (rmd != 0.0) {
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increment = (safe_noise(p) + offset) * pwr * value;
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increment = (safe_noise(p, 0) + offset) * pwr * value;
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value += rmd * increment;
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}
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@ -128,7 +128,7 @@ float noise_musgrave_hybrid_multi_fractal(point p, string basis, float H,
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float pwr = pwHL;
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int i;
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result = safe_noise(p) + offset;
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result = safe_noise(p, 0) + offset;
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weight = gain * result;
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p *= lacunarity;
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@ -136,7 +136,7 @@ float noise_musgrave_hybrid_multi_fractal(point p, string basis, float H,
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if (weight > 1.0)
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weight = 1.0;
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signal = (safe_noise(p) + offset) * pwr;
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signal = (safe_noise(p, 0) + offset) * pwr;
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pwr *= pwHL;
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result += weight * signal;
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weight *= gain * signal;
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@ -145,7 +145,7 @@ float noise_musgrave_hybrid_multi_fractal(point p, string basis, float H,
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rmd = octaves - floor(octaves);
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if (rmd != 0.0)
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result += rmd * ((safe_noise(p) + offset) * pwr);
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result += rmd * ((safe_noise(p, 0) + offset) * pwr);
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return result;
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}
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@ -166,7 +166,7 @@ float noise_musgrave_ridged_multi_fractal(point p, string basis, float H,
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float pwr = pwHL;
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int i;
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signal = offset - fabs(safe_noise(p));
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signal = offset - fabs(safe_noise(p, 0));
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signal *= signal;
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result = signal;
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weight = 1.0;
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@ -174,7 +174,7 @@ float noise_musgrave_ridged_multi_fractal(point p, string basis, float H,
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for (i = 1; i < (int)octaves; i++) {
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p *= lacunarity;
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weight = clamp(signal * gain, 0.0, 1.0);
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signal = offset - fabs(safe_noise(p));
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signal = offset - fabs(safe_noise(p, 0));
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signal *= signal;
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signal *= weight;
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result += signal * pwr;
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@ -151,9 +151,17 @@ float voronoi_CrS(point p) { return 2.0 * voronoi_Cr(p) - 1.0; }
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/* Noise Bases */
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float safe_noise(point p)
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float safe_noise(point p, int type)
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{
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float f = noise(p);
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float f = 0.0;
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/* Perlin noise in range -1..1 */
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if (type == 0)
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f = noise("perlin", p);
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/* Perlin noise in range 0..1 */
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else
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f = noise(p);
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/* can happen for big coordinates, things even out to 0.5 then anyway */
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if(!isfinite(f))
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@ -167,7 +175,7 @@ float noise_basis(point p, string basis)
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float result = 0.0;
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if (basis == "Perlin")
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result = safe_noise(p); /* returns perlin noise in range 0..1 */
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result = safe_noise(p, 1);
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if (basis == "Voronoi F1")
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result = voronoi_F1S(p);
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if (basis == "Voronoi F2")
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