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-rw-r--r--intern/cycles/kernel/shaders/node_musgrave_texture.osl803
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diff --git a/intern/cycles/kernel/shaders/node_musgrave_texture.osl b/intern/cycles/kernel/shaders/node_musgrave_texture.osl
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--- a/intern/cycles/kernel/shaders/node_musgrave_texture.osl
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-/*
- * Copyright 2011-2013 Blender Foundation
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "node_noise.h"
-#include "stdcycles.h"
-#include "vector2.h"
-#include "vector4.h"
-
-#define vector3 point
-
-/* 1D Musgrave fBm
- *
- * H: fractal increment parameter
- * lacunarity: gap between successive frequencies
- * octaves: number of frequencies in the fBm
- *
- * from "Texturing and Modelling: A procedural approach"
- */
-
-float noise_musgrave_fBm_1d(float co, float H, float lacunarity, float octaves)
-{
- float p = co;
- float value = 0.0;
- float pwr = 1.0;
- float pwHL = pow(lacunarity, -H);
-
- for (int i = 0; i < (int)octaves; i++) {
- value += safe_snoise(p) * pwr;
- pwr *= pwHL;
- p *= lacunarity;
- }
-
- float rmd = octaves - floor(octaves);
- if (rmd != 0.0) {
- value += rmd * safe_snoise(p) * pwr;
- }
-
- return value;
-}
-
-/* 1D Musgrave Multifractal
- *
- * H: highest fractal dimension
- * lacunarity: gap between successive frequencies
- * octaves: number of frequencies in the fBm
- */
-
-float noise_musgrave_multi_fractal_1d(float co, float H, float lacunarity, float octaves)
-{
- float p = co;
- float value = 1.0;
- float pwr = 1.0;
- float pwHL = pow(lacunarity, -H);
-
- for (int i = 0; i < (int)octaves; i++) {
- value *= (pwr * safe_snoise(p) + 1.0);
- pwr *= pwHL;
- p *= lacunarity;
- }
-
- float rmd = octaves - floor(octaves);
- if (rmd != 0.0) {
- value *= (rmd * pwr * safe_snoise(p) + 1.0); /* correct? */
- }
-
- return value;
-}
-
-/* 1D Musgrave Heterogeneous Terrain
- *
- * H: fractal dimension of the roughest area
- * lacunarity: gap between successive frequencies
- * octaves: number of frequencies in the fBm
- * offset: raises the terrain from `sea level'
- */
-
-float noise_musgrave_hetero_terrain_1d(
- float co, float H, float lacunarity, float octaves, float offset)
-{
- float p = co;
- float pwHL = pow(lacunarity, -H);
- float pwr = pwHL;
-
- /* first unscaled octave of function; later octaves are scaled */
- float value = offset + safe_snoise(p);
- p *= lacunarity;
-
- for (int i = 1; i < (int)octaves; i++) {
- float increment = (safe_snoise(p) + offset) * pwr * value;
- value += increment;
- pwr *= pwHL;
- p *= lacunarity;
- }
-
- float rmd = octaves - floor(octaves);
- if (rmd != 0.0) {
- float increment = (safe_snoise(p) + offset) * pwr * value;
- value += rmd * increment;
- }
-
- return value;
-}
-
-/* 1D Hybrid Additive/Multiplicative Multifractal Terrain
- *
- * H: fractal dimension of the roughest area
- * lacunarity: gap between successive frequencies
- * octaves: number of frequencies in the fBm
- * offset: raises the terrain from `sea level'
- */
-
-float noise_musgrave_hybrid_multi_fractal_1d(
- float co, float H, float lacunarity, float octaves, float offset, float gain)
-{
- float p = co;
- float pwHL = pow(lacunarity, -H);
- float pwr = pwHL;
-
- float value = safe_snoise(p) + offset;
- float weight = gain * value;
- p *= lacunarity;
-
- for (int i = 1; (weight > 0.001) && (i < (int)octaves); i++) {
- if (weight > 1.0) {
- weight = 1.0;
- }
-
- float signal = (safe_snoise(p) + offset) * pwr;
- pwr *= pwHL;
- value += weight * signal;
- weight *= gain * signal;
- p *= lacunarity;
- }
-
- float rmd = octaves - floor(octaves);
- if (rmd != 0.0) {
- value += rmd * ((safe_snoise(p) + offset) * pwr);
- }
-
- return value;
-}
-
-/* 1D Ridged Multifractal Terrain
- *
- * H: fractal dimension of the roughest area
- * lacunarity: gap between successive frequencies
- * octaves: number of frequencies in the fBm
- * offset: raises the terrain from `sea level'
- */
-
-float noise_musgrave_ridged_multi_fractal_1d(
- float co, float H, float lacunarity, float octaves, float offset, float gain)
-{
- float p = co;
- float pwHL = pow(lacunarity, -H);
- float pwr = pwHL;
-
- float signal = offset - fabs(safe_snoise(p));
- signal *= signal;
- float value = signal;
- float weight = 1.0;
-
- for (int i = 1; i < (int)octaves; i++) {
- p *= lacunarity;
- weight = clamp(signal * gain, 0.0, 1.0);
- signal = offset - fabs(safe_snoise(p));
- signal *= signal;
- signal *= weight;
- value += signal * pwr;
- pwr *= pwHL;
- }
-
- return value;
-}
-
-/* 2D Musgrave fBm
- *
- * H: fractal increment parameter
- * lacunarity: gap between successive frequencies
- * octaves: number of frequencies in the fBm
- *
- * from "Texturing and Modelling: A procedural approach"
- */
-
-float noise_musgrave_fBm_2d(vector2 co, float H, float lacunarity, float octaves)
-{
- vector2 p = co;
- float value = 0.0;
- float pwr = 1.0;
- float pwHL = pow(lacunarity, -H);
-
- for (int i = 0; i < (int)octaves; i++) {
- value += safe_snoise(p) * pwr;
- pwr *= pwHL;
- p *= lacunarity;
- }
-
- float rmd = octaves - floor(octaves);
- if (rmd != 0.0) {
- value += rmd * safe_snoise(p) * pwr;
- }
-
- return value;
-}
-
-/* 2D Musgrave Multifractal
- *
- * H: highest fractal dimension
- * lacunarity: gap between successive frequencies
- * octaves: number of frequencies in the fBm
- */
-
-float noise_musgrave_multi_fractal_2d(vector2 co, float H, float lacunarity, float octaves)
-{
- vector2 p = co;
- float value = 1.0;
- float pwr = 1.0;
- float pwHL = pow(lacunarity, -H);
-
- for (int i = 0; i < (int)octaves; i++) {
- value *= (pwr * safe_snoise(p) + 1.0);
- pwr *= pwHL;
- p *= lacunarity;
- }
-
- float rmd = octaves - floor(octaves);
- if (rmd != 0.0) {
- value *= (rmd * pwr * safe_snoise(p) + 1.0); /* correct? */
- }
-
- return value;
-}
-
-/* 2D Musgrave Heterogeneous Terrain
- *
- * H: fractal dimension of the roughest area
- * lacunarity: gap between successive frequencies
- * octaves: number of frequencies in the fBm
- * offset: raises the terrain from `sea level'
- */
-
-float noise_musgrave_hetero_terrain_2d(
- vector2 co, float H, float lacunarity, float octaves, float offset)
-{
- vector2 p = co;
- float pwHL = pow(lacunarity, -H);
- float pwr = pwHL;
-
- /* first unscaled octave of function; later octaves are scaled */
- float value = offset + safe_snoise(p);
- p *= lacunarity;
-
- for (int i = 1; i < (int)octaves; i++) {
- float increment = (safe_snoise(p) + offset) * pwr * value;
- value += increment;
- pwr *= pwHL;
- p *= lacunarity;
- }
-
- float rmd = octaves - floor(octaves);
- if (rmd != 0.0) {
- float increment = (safe_snoise(p) + offset) * pwr * value;
- value += rmd * increment;
- }
-
- return value;
-}
-
-/* 2D Hybrid Additive/Multiplicative Multifractal Terrain
- *
- * H: fractal dimension of the roughest area
- * lacunarity: gap between successive frequencies
- * octaves: number of frequencies in the fBm
- * offset: raises the terrain from `sea level'
- */
-
-float noise_musgrave_hybrid_multi_fractal_2d(
- vector2 co, float H, float lacunarity, float octaves, float offset, float gain)
-{
- vector2 p = co;
- float pwHL = pow(lacunarity, -H);
- float pwr = pwHL;
-
- float value = safe_snoise(p) + offset;
- float weight = gain * value;
- p *= lacunarity;
-
- for (int i = 1; (weight > 0.001) && (i < (int)octaves); i++) {
- if (weight > 1.0) {
- weight = 1.0;
- }
-
- float signal = (safe_snoise(p) + offset) * pwr;
- pwr *= pwHL;
- value += weight * signal;
- weight *= gain * signal;
- p *= lacunarity;
- }
-
- float rmd = octaves - floor(octaves);
- if (rmd != 0.0) {
- value += rmd * ((safe_snoise(p) + offset) * pwr);
- }
-
- return value;
-}
-
-/* 2D Ridged Multifractal Terrain
- *
- * H: fractal dimension of the roughest area
- * lacunarity: gap between successive frequencies
- * octaves: number of frequencies in the fBm
- * offset: raises the terrain from `sea level'
- */
-
-float noise_musgrave_ridged_multi_fractal_2d(
- vector2 co, float H, float lacunarity, float octaves, float offset, float gain)
-{
- vector2 p = co;
- float pwHL = pow(lacunarity, -H);
- float pwr = pwHL;
-
- float signal = offset - fabs(safe_snoise(p));
- signal *= signal;
- float value = signal;
- float weight = 1.0;
-
- for (int i = 1; i < (int)octaves; i++) {
- p *= lacunarity;
- weight = clamp(signal * gain, 0.0, 1.0);
- signal = offset - fabs(safe_snoise(p));
- signal *= signal;
- signal *= weight;
- value += signal * pwr;
- pwr *= pwHL;
- }
-
- return value;
-}
-
-/* 3D Musgrave fBm
- *
- * H: fractal increment parameter
- * lacunarity: gap between successive frequencies
- * octaves: number of frequencies in the fBm
- *
- * from "Texturing and Modelling: A procedural approach"
- */
-
-float noise_musgrave_fBm_3d(vector3 co, float H, float lacunarity, float octaves)
-{
- vector3 p = co;
- float value = 0.0;
- float pwr = 1.0;
- float pwHL = pow(lacunarity, -H);
-
- for (int i = 0; i < (int)octaves; i++) {
- value += safe_snoise(p) * pwr;
- pwr *= pwHL;
- p *= lacunarity;
- }
-
- float rmd = octaves - floor(octaves);
- if (rmd != 0.0) {
- value += rmd * safe_snoise(p) * pwr;
- }
-
- return value;
-}
-
-/* 3D Musgrave Multifractal
- *
- * H: highest fractal dimension
- * lacunarity: gap between successive frequencies
- * octaves: number of frequencies in the fBm
- */
-
-float noise_musgrave_multi_fractal_3d(vector3 co, float H, float lacunarity, float octaves)
-{
- vector3 p = co;
- float value = 1.0;
- float pwr = 1.0;
- float pwHL = pow(lacunarity, -H);
-
- for (int i = 0; i < (int)octaves; i++) {
- value *= (pwr * safe_snoise(p) + 1.0);
- pwr *= pwHL;
- p *= lacunarity;
- }
-
- float rmd = octaves - floor(octaves);
- if (rmd != 0.0) {
- value *= (rmd * pwr * safe_snoise(p) + 1.0); /* correct? */
- }
-
- return value;
-}
-
-/* 3D Musgrave Heterogeneous Terrain
- *
- * H: fractal dimension of the roughest area
- * lacunarity: gap between successive frequencies
- * octaves: number of frequencies in the fBm
- * offset: raises the terrain from `sea level'
- */
-
-float noise_musgrave_hetero_terrain_3d(
- vector3 co, float H, float lacunarity, float octaves, float offset)
-{
- vector3 p = co;
- float pwHL = pow(lacunarity, -H);
- float pwr = pwHL;
-
- /* first unscaled octave of function; later octaves are scaled */
- float value = offset + safe_snoise(p);
- p *= lacunarity;
-
- for (int i = 1; i < (int)octaves; i++) {
- float increment = (safe_snoise(p) + offset) * pwr * value;
- value += increment;
- pwr *= pwHL;
- p *= lacunarity;
- }
-
- float rmd = octaves - floor(octaves);
- if (rmd != 0.0) {
- float increment = (safe_snoise(p) + offset) * pwr * value;
- value += rmd * increment;
- }
-
- return value;
-}
-
-/* 3D Hybrid Additive/Multiplicative Multifractal Terrain
- *
- * H: fractal dimension of the roughest area
- * lacunarity: gap between successive frequencies
- * octaves: number of frequencies in the fBm
- * offset: raises the terrain from `sea level'
- */
-
-float noise_musgrave_hybrid_multi_fractal_3d(
- vector3 co, float H, float lacunarity, float octaves, float offset, float gain)
-{
- vector3 p = co;
- float pwHL = pow(lacunarity, -H);
- float pwr = pwHL;
-
- float value = safe_snoise(p) + offset;
- float weight = gain * value;
- p *= lacunarity;
-
- for (int i = 1; (weight > 0.001) && (i < (int)octaves); i++) {
- if (weight > 1.0) {
- weight = 1.0;
- }
-
- float signal = (safe_snoise(p) + offset) * pwr;
- pwr *= pwHL;
- value += weight * signal;
- weight *= gain * signal;
- p *= lacunarity;
- }
-
- float rmd = octaves - floor(octaves);
- if (rmd != 0.0) {
- value += rmd * ((safe_snoise(p) + offset) * pwr);
- }
-
- return value;
-}
-
-/* 3D Ridged Multifractal Terrain
- *
- * H: fractal dimension of the roughest area
- * lacunarity: gap between successive frequencies
- * octaves: number of frequencies in the fBm
- * offset: raises the terrain from `sea level'
- */
-
-float noise_musgrave_ridged_multi_fractal_3d(
- vector3 co, float H, float lacunarity, float octaves, float offset, float gain)
-{
- vector3 p = co;
- float pwHL = pow(lacunarity, -H);
- float pwr = pwHL;
-
- float signal = offset - fabs(safe_snoise(p));
- signal *= signal;
- float value = signal;
- float weight = 1.0;
-
- for (int i = 1; i < (int)octaves; i++) {
- p *= lacunarity;
- weight = clamp(signal * gain, 0.0, 1.0);
- signal = offset - fabs(safe_snoise(p));
- signal *= signal;
- signal *= weight;
- value += signal * pwr;
- pwr *= pwHL;
- }
-
- return value;
-}
-
-/* 4D Musgrave fBm
- *
- * H: fractal increment parameter
- * lacunarity: gap between successive frequencies
- * octaves: number of frequencies in the fBm
- *
- * from "Texturing and Modelling: A procedural approach"
- */
-
-float noise_musgrave_fBm_4d(vector4 co, float H, float lacunarity, float octaves)
-{
- vector4 p = co;
- float value = 0.0;
- float pwr = 1.0;
- float pwHL = pow(lacunarity, -H);
-
- for (int i = 0; i < (int)octaves; i++) {
- value += safe_snoise(p) * pwr;
- pwr *= pwHL;
- p *= lacunarity;
- }
-
- float rmd = octaves - floor(octaves);
- if (rmd != 0.0) {
- value += rmd * safe_snoise(p) * pwr;
- }
-
- return value;
-}
-
-/* 4D Musgrave Multifractal
- *
- * H: highest fractal dimension
- * lacunarity: gap between successive frequencies
- * octaves: number of frequencies in the fBm
- */
-
-float noise_musgrave_multi_fractal_4d(vector4 co, float H, float lacunarity, float octaves)
-{
- vector4 p = co;
- float value = 1.0;
- float pwr = 1.0;
- float pwHL = pow(lacunarity, -H);
-
- for (int i = 0; i < (int)octaves; i++) {
- value *= (pwr * safe_snoise(p) + 1.0);
- pwr *= pwHL;
- p *= lacunarity;
- }
-
- float rmd = octaves - floor(octaves);
- if (rmd != 0.0) {
- value *= (rmd * pwr * safe_snoise(p) + 1.0); /* correct? */
- }
-
- return value;
-}
-
-/* 4D Musgrave Heterogeneous Terrain
- *
- * H: fractal dimension of the roughest area
- * lacunarity: gap between successive frequencies
- * octaves: number of frequencies in the fBm
- * offset: raises the terrain from `sea level'
- */
-
-float noise_musgrave_hetero_terrain_4d(
- vector4 co, float H, float lacunarity, float octaves, float offset)
-{
- vector4 p = co;
- float pwHL = pow(lacunarity, -H);
- float pwr = pwHL;
-
- /* first unscaled octave of function; later octaves are scaled */
- float value = offset + safe_snoise(p);
- p *= lacunarity;
-
- for (int i = 1; i < (int)octaves; i++) {
- float increment = (safe_snoise(p) + offset) * pwr * value;
- value += increment;
- pwr *= pwHL;
- p *= lacunarity;
- }
-
- float rmd = octaves - floor(octaves);
- if (rmd != 0.0) {
- float increment = (safe_snoise(p) + offset) * pwr * value;
- value += rmd * increment;
- }
-
- return value;
-}
-
-/* 4D Hybrid Additive/Multiplicative Multifractal Terrain
- *
- * H: fractal dimension of the roughest area
- * lacunarity: gap between successive frequencies
- * octaves: number of frequencies in the fBm
- * offset: raises the terrain from `sea level'
- */
-
-float noise_musgrave_hybrid_multi_fractal_4d(
- vector4 co, float H, float lacunarity, float octaves, float offset, float gain)
-{
- vector4 p = co;
- float pwHL = pow(lacunarity, -H);
- float pwr = pwHL;
-
- float value = safe_snoise(p) + offset;
- float weight = gain * value;
- p *= lacunarity;
-
- for (int i = 1; (weight > 0.001) && (i < (int)octaves); i++) {
- if (weight > 1.0) {
- weight = 1.0;
- }
-
- float signal = (safe_snoise(p) + offset) * pwr;
- pwr *= pwHL;
- value += weight * signal;
- weight *= gain * signal;
- p *= lacunarity;
- }
-
- float rmd = octaves - floor(octaves);
- if (rmd != 0.0) {
- value += rmd * ((safe_snoise(p) + offset) * pwr);
- }
-
- return value;
-}
-
-/* 4D Ridged Multifractal Terrain
- *
- * H: fractal dimension of the roughest area
- * lacunarity: gap between successive frequencies
- * octaves: number of frequencies in the fBm
- * offset: raises the terrain from `sea level'
- */
-
-float noise_musgrave_ridged_multi_fractal_4d(
- vector4 co, float H, float lacunarity, float octaves, float offset, float gain)
-{
- vector4 p = co;
- float pwHL = pow(lacunarity, -H);
- float pwr = pwHL;
-
- float signal = offset - fabs(safe_snoise(p));
- signal *= signal;
- float value = signal;
- float weight = 1.0;
-
- for (int i = 1; i < (int)octaves; i++) {
- p *= lacunarity;
- weight = clamp(signal * gain, 0.0, 1.0);
- signal = offset - fabs(safe_snoise(p));
- signal *= signal;
- signal *= weight;
- value += signal * pwr;
- pwr *= pwHL;
- }
-
- return value;
-}
-
-shader node_musgrave_texture(
- int use_mapping = 0,
- matrix mapping = matrix(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0),
- string musgrave_type = "fBM",
- string dimensions = "3D",
- point Vector = P,
- float W = 0.0,
- float Dimension = 2.0,
- float Scale = 5.0,
- float Detail = 2.0,
- float Lacunarity = 2.0,
- float Offset = 0.0,
- float Gain = 1.0,
- output float Fac = 0.0)
-{
- float dimension = max(Dimension, 1e-5);
- float octaves = clamp(Detail, 0.0, 16.0);
- float lacunarity = max(Lacunarity, 1e-5);
-
- vector3 s = Vector;
-
- if (use_mapping)
- s = transform(mapping, s);
-
- if (dimensions == "1D") {
- float p = W * Scale;
- if (musgrave_type == "multifractal") {
- Fac = noise_musgrave_multi_fractal_1d(p, dimension, lacunarity, octaves);
- }
- else if (musgrave_type == "fBM") {
- Fac = noise_musgrave_fBm_1d(p, dimension, lacunarity, octaves);
- }
- else if (musgrave_type == "hybrid_multifractal") {
- Fac = noise_musgrave_hybrid_multi_fractal_1d(
- p, dimension, lacunarity, octaves, Offset, Gain);
- }
- else if (musgrave_type == "ridged_multifractal") {
- Fac = noise_musgrave_ridged_multi_fractal_1d(
- p, dimension, lacunarity, octaves, Offset, Gain);
- }
- else if (musgrave_type == "hetero_terrain") {
- Fac = noise_musgrave_hetero_terrain_1d(p, dimension, lacunarity, octaves, Offset);
- }
- else {
- Fac = 0.0;
- }
- }
- else if (dimensions == "2D") {
- vector2 p = vector2(s[0], s[1]) * Scale;
- if (musgrave_type == "multifractal") {
- Fac = noise_musgrave_multi_fractal_2d(p, dimension, lacunarity, octaves);
- }
- else if (musgrave_type == "fBM") {
- Fac = noise_musgrave_fBm_2d(p, dimension, lacunarity, octaves);
- }
- else if (musgrave_type == "hybrid_multifractal") {
- Fac = noise_musgrave_hybrid_multi_fractal_2d(
- p, dimension, lacunarity, octaves, Offset, Gain);
- }
- else if (musgrave_type == "ridged_multifractal") {
- Fac = noise_musgrave_ridged_multi_fractal_2d(
- p, dimension, lacunarity, octaves, Offset, Gain);
- }
- else if (musgrave_type == "hetero_terrain") {
- Fac = noise_musgrave_hetero_terrain_2d(p, dimension, lacunarity, octaves, Offset);
- }
- else {
- Fac = 0.0;
- }
- }
- else if (dimensions == "3D") {
- vector3 p = s * Scale;
- if (musgrave_type == "multifractal") {
- Fac = noise_musgrave_multi_fractal_3d(p, dimension, lacunarity, octaves);
- }
- else if (musgrave_type == "fBM") {
- Fac = noise_musgrave_fBm_3d(p, dimension, lacunarity, octaves);
- }
- else if (musgrave_type == "hybrid_multifractal") {
- Fac = noise_musgrave_hybrid_multi_fractal_3d(
- p, dimension, lacunarity, octaves, Offset, Gain);
- }
- else if (musgrave_type == "ridged_multifractal") {
- Fac = noise_musgrave_ridged_multi_fractal_3d(
- p, dimension, lacunarity, octaves, Offset, Gain);
- }
- else if (musgrave_type == "hetero_terrain") {
- Fac = noise_musgrave_hetero_terrain_3d(p, dimension, lacunarity, octaves, Offset);
- }
- else {
- Fac = 0.0;
- }
- }
- else if (dimensions == "4D") {
- vector4 p = vector4(s[0], s[1], s[2], W) * Scale;
- if (musgrave_type == "multifractal") {
- Fac = noise_musgrave_multi_fractal_4d(p, dimension, lacunarity, octaves);
- }
- else if (musgrave_type == "fBM") {
- Fac = noise_musgrave_fBm_4d(p, dimension, lacunarity, octaves);
- }
- else if (musgrave_type == "hybrid_multifractal") {
- Fac = noise_musgrave_hybrid_multi_fractal_4d(
- p, dimension, lacunarity, octaves, Offset, Gain);
- }
- else if (musgrave_type == "ridged_multifractal") {
- Fac = noise_musgrave_ridged_multi_fractal_4d(
- p, dimension, lacunarity, octaves, Offset, Gain);
- }
- else if (musgrave_type == "hetero_terrain") {
- Fac = noise_musgrave_hetero_terrain_4d(p, dimension, lacunarity, octaves, Offset);
- }
- else {
- Fac = 0.0;
- }
- }
- else {
- Fac = 0.0;
- }
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-10 19:45:55 +0300