Classes
struct	VoronoiParams
struct	VoronoiOutput

Functions
Hash Functions
Create a randomized hash from the given inputs. Contrary to hash functions in BLI_hash.hh these functions produce better randomness but are more expensive to compute.
uint32_t	hash (uint32_t kx)
uint32_t	hash (uint32_t kx, uint32_t ky)
uint32_t	hash (uint32_t kx, uint32_t ky, uint32_t kz)
uint32_t	hash (uint32_t kx, uint32_t ky, uint32_t kz, uint32_t kw)
uint32_t	hash_float (float kx)
uint32_t	hash_float (float2 k)
uint32_t	hash_float (float3 k)
uint32_t	hash_float (float4 k)
uint32_t	hash_float (const float4x4 &k)
float	hash_to_float (uint32_t kx)
float	hash_to_float (uint32_t kx, uint32_t ky)
float	hash_to_float (uint32_t kx, uint32_t ky, uint32_t kz)
float	hash_to_float (uint32_t kx, uint32_t ky, uint32_t kz, uint32_t kw)
float	hash_float_to_float (float k)
float	hash_float_to_float (float2 k)
float	hash_float_to_float (float3 k)
float	hash_float_to_float (float4 k)
float2	hash_float_to_float2 (float2 k)
float2	hash_float_to_float2 (float3 k)
float2	hash_float_to_float2 (float4 k)
float3	hash_float_to_float3 (float k)
float3	hash_float_to_float3 (float2 k)
float3	hash_float_to_float3 (float3 k)
float3	hash_float_to_float3 (float4 k)
float4	hash_float_to_float4 (float4 k)
Jenkins Lookup3 Hash Functions
https://burtleburtle.net/bob/c/lookup3.c
BLI_INLINE uint32_t	hash_bit_rotate (uint32_t x, uint32_t k)
BLI_INLINE void	hash_bit_mix (uint32_t &a, uint32_t &b, uint32_t &c)
BLI_INLINE void	hash_bit_final (uint32_t &a, uint32_t &b, uint32_t &c)
BLI_INLINE uint32_t	float_as_uint (float f)
static ATTR_NO_SIGNED_INT_OVERFLOW int2	hash_pcg2d_i (int2 v)
static ATTR_NO_SIGNED_INT_OVERFLOW int3	hash_pcg3d_i (int3 v)
static ATTR_NO_SIGNED_INT_OVERFLOW int4	hash_pcg4d_i (int4 v)
BLI_INLINE float	uint_to_float_01 (uint32_t k)
static float	int_to_float_01 (int32_t k)
static float2	hash_int2_to_float2 (int2 k)
static float3	hash_int3_to_float3 (int3 k)
static float4	hash_int4_to_float4 (int4 k)
static float3	hash_int2_to_float3 (int2 k)
static float3	hash_int4_to_float3 (int4 k)

Perlin Noise
Perlin, Ken. "Improving noise." Proceedings of the 29th annual conference on Computer graphics and interactive techniques. 2002. This implementation is functionally identical to the implementations in EEVEE, OSL, and SVM. So any changes should be applied in all relevant implementations.
enum	{ NOISE_SHD_PERLIN_MULTIFRACTAL = 0 , NOISE_SHD_PERLIN_FBM = 1 , NOISE_SHD_PERLIN_HYBRID_MULTIFRACTAL = 2 , NOISE_SHD_PERLIN_RIDGED_MULTIFRACTAL = 3 , NOISE_SHD_PERLIN_HETERO_TERRAIN = 4 }
float	perlin_signed (float position)
float	perlin_signed (float2 position)
float	perlin_signed (float3 position)
float	perlin_signed (float4 position)
float	perlin (float position)
float	perlin (float2 position)
float	perlin (float3 position)
float	perlin (float4 position)
template<typename T>
float	perlin_fbm (T p, float detail, float roughness, float lacunarity, bool normalize)
template<typename T>
float	perlin_fractal_distorted (T position, float detail, float roughness, float lacunarity, float offset, float gain, float distortion, int type, bool normalize)
float3	perlin_float3_fractal_distorted (float position, float detail, float roughness, float lacunarity, float offset, float gain, float distortion, int type, bool normalize)
float3	perlin_float3_fractal_distorted (float2 position, float detail, float roughness, float lacunarity, float offset, float gain, float distortion, int type, bool normalize)
float3	perlin_float3_fractal_distorted (float3 position, float detail, float roughness, float lacunarity, float offset, float gain, float distortion, int type, bool normalize)
float3	perlin_float3_fractal_distorted (float4 position, float detail, float roughness, float lacunarity, float offset, float gain, float distortion, int type, bool normalize)
template<typename T>
static T	mix (T v0, T v1, float x)
BLI_INLINE float	mix (float v0, float v1, float v2, float v3, float x, float y)
BLI_INLINE float	mix (float v0, float v1, float v2, float v3, float v4, float v5, float v6, float v7, float x, float y, float z)
BLI_INLINE float	mix (float v0, float v1, float v2, float v3, float v4, float v5, float v6, float v7, float v8, float v9, float v10, float v11, float v12, float v13, float v14, float v15, float x, float y, float z, float w)
BLI_INLINE float	fade (float t)
BLI_INLINE float	negate_if (float value, uint32_t condition)
BLI_INLINE float	noise_grad (uint32_t hash, float x)
BLI_INLINE float	noise_grad (uint32_t hash, float x, float y)
BLI_INLINE float	noise_grad (uint32_t hash, float x, float y, float z)
BLI_INLINE float	noise_grad (uint32_t hash, float x, float y, float z, float w)
BLI_INLINE float	floor_fraction (float x, int &i)
BLI_INLINE float	perlin_noise (float position)
BLI_INLINE float	perlin_noise (float2 position)
BLI_INLINE float	perlin_noise (float3 position)
BLI_INLINE float	perlin_noise (float4 position)
template float	perlin_fbm< float3 > (float3 p, const float detail, const float roughness, const float lacunarity, const bool normalize)
template float	perlin_fbm< float2 > (float2 p, const float detail, const float roughness, const float lacunarity, const bool normalize)
template<typename T>
float	perlin_multi_fractal (T p, const float detail, const float roughness, const float lacunarity)
template<typename T>
float	perlin_hetero_terrain (T p, const float detail, const float roughness, const float lacunarity, const float offset)
template<typename T>
float	perlin_hybrid_multi_fractal (T p, const float detail, const float roughness, const float lacunarity, const float offset, const float gain)
template<typename T>
float	perlin_ridged_multi_fractal (T p, const float detail, const float roughness, const float lacunarity, const float offset, const float gain)
template<typename T>
float	perlin_select (T p, float detail, float roughness, float lacunarity, float offset, float gain, int type, bool normalize)
BLI_INLINE float	random_float_offset (float seed)
BLI_INLINE float2	random_float2_offset (float seed)
BLI_INLINE float3	random_float3_offset (float seed)
BLI_INLINE float4	random_float4_offset (float seed)
BLI_INLINE float	perlin_distortion (float position, float strength)
BLI_INLINE float2	perlin_distortion (float2 position, float strength)
BLI_INLINE float3	perlin_distortion (float3 position, float strength)
BLI_INLINE float4	perlin_distortion (float4 position, float strength)
template float	perlin_fractal_distorted< float > (float position, float detail, float roughness, float lacunarity, float offset, float gain, float distortion, int type, bool normalize)
template float	perlin_fractal_distorted< float2 > (float2 position, float detail, float roughness, float lacunarity, float offset, float gain, float distortion, int type, bool normalize)
template float	perlin_fractal_distorted< float3 > (float3 position, float detail, float roughness, float lacunarity, float offset, float gain, float distortion, int type, bool normalize)
template float	perlin_fractal_distorted< float4 > (float4 position, float detail, float roughness, float lacunarity, float offset, float gain, float distortion, int type, bool normalize)

Voronoi Noise
Note Ported from Cycles code. Original code is under the MIT License, Copyright (c) 2013 Inigo Quilez. Smooth Voronoi: https://wiki.blender.org/wiki/User:OmarSquircleArt/GSoC2019/Documentation/Smooth_Voronoi Distance To Edge based on: https://www.iquilezles.org/www/articles/voronoilines/voronoilines.htm https://www.shadertoy.com/view/ldl3W8 With optimization to change -2..2 scan window to -1..1 for better performance, as explained in https://www.shadertoy.com/view/llG3zy.
enum	{ NOISE_SHD_VORONOI_EUCLIDEAN = 0 , NOISE_SHD_VORONOI_MANHATTAN = 1 , NOISE_SHD_VORONOI_CHEBYCHEV = 2 , NOISE_SHD_VORONOI_MINKOWSKI = 3 }
enum	{ NOISE_SHD_VORONOI_F1 = 0 , NOISE_SHD_VORONOI_F2 = 1 , NOISE_SHD_VORONOI_SMOOTH_F1 = 2 , NOISE_SHD_VORONOI_DISTANCE_TO_EDGE = 3 , NOISE_SHD_VORONOI_N_SPHERE_RADIUS = 4 }
float	voronoi_distance (const float a, const float b)
float	voronoi_distance (const float2 a, const float2 b, const VoronoiParams &params)
float	voronoi_distance (const float3 a, const float3 b, const VoronoiParams &params)
float	voronoi_distance (const float4 a, const float4 b, const VoronoiParams &params)
float4	voronoi_position (const float coord)
VoronoiOutput	voronoi_f1 (const VoronoiParams &params, const float coord)
VoronoiOutput	voronoi_smooth_f1 (const VoronoiParams &params, const float coord, const bool calc_color)
VoronoiOutput	voronoi_f2 (const VoronoiParams &params, const float coord)
float	voronoi_distance_to_edge (const VoronoiParams &params, const float coord)
float	voronoi_n_sphere_radius (const VoronoiParams &params, const float coord)
float4	voronoi_position (const float2 coord)
VoronoiOutput	voronoi_f1 (const VoronoiParams &params, const float2 coord)
VoronoiOutput	voronoi_smooth_f1 (const VoronoiParams &params, const float2 coord, const bool calc_color)
VoronoiOutput	voronoi_f2 (const VoronoiParams &params, const float2 coord)
float	voronoi_distance_to_edge (const VoronoiParams &params, const float2 coord)
float	voronoi_n_sphere_radius (const VoronoiParams &params, const float2 coord)
float4	voronoi_position (const float3 coord)
VoronoiOutput	voronoi_f1 (const VoronoiParams &params, const float3 coord)
VoronoiOutput	voronoi_smooth_f1 (const VoronoiParams &params, const float3 coord, const bool calc_color)
VoronoiOutput	voronoi_f2 (const VoronoiParams &params, const float3 coord)
float	voronoi_distance_to_edge (const VoronoiParams &params, const float3 coord)
float	voronoi_n_sphere_radius (const VoronoiParams &params, const float3 coord)
float4	voronoi_position (const float4 coord)
VoronoiOutput	voronoi_f1 (const VoronoiParams &params, const float4 coord)
VoronoiOutput	voronoi_smooth_f1 (const VoronoiParams &params, const float4 coord, const bool calc_color)
VoronoiOutput	voronoi_f2 (const VoronoiParams &params, const float4 coord)
float	voronoi_distance_to_edge (const VoronoiParams &params, const float4 coord)
float	voronoi_n_sphere_radius (const VoronoiParams &params, const float4 coord)
template<typename T>
VoronoiOutput	fractal_voronoi_x_fx (const VoronoiParams &params, const T coord, const bool calc_color)
template<typename T>
float	fractal_voronoi_distance_to_edge (const VoronoiParams &params, const T coord)
template<typename T>
static float	voronoi_distance_bound (const T a, const T b, const VoronoiParams &params)
template VoronoiOutput	fractal_voronoi_x_fx< float > (const VoronoiParams &params, const float coord, const bool calc_color)
template VoronoiOutput	fractal_voronoi_x_fx< float2 > (const VoronoiParams &params, const float2 coord, const bool calc_color)
template VoronoiOutput	fractal_voronoi_x_fx< float3 > (const VoronoiParams &params, const float3 coord, const bool calc_color)
template VoronoiOutput	fractal_voronoi_x_fx< float4 > (const VoronoiParams &params, const float4 coord, const bool calc_color)
template float	fractal_voronoi_distance_to_edge< float > (const VoronoiParams &params, const float coord)
template float	fractal_voronoi_distance_to_edge< float2 > (const VoronoiParams &params, const float2 coord)
template float	fractal_voronoi_distance_to_edge< float3 > (const VoronoiParams &params, const float3 coord)
template float	fractal_voronoi_distance_to_edge< float4 > (const VoronoiParams &params, const float4 coord)

Gabor Noise
Implements Gabor noise based on the paper: Lagae, Ares, et al. "Procedural noise using sparse Gabor convolution." ACM Transactions on Graphics (TOG) 28.3 (2009): 1-10. But with the improvements from the paper: Tavernier, Vincent, et al. "Making gabor noise fast and normalized." Eurographics 2019-40th Annual Conference of the European Association for Computer Graphics. 2019. And compute the Phase and Intensity of the Gabor based on the paper: Tricard, Thibault, et al. "Procedural phasor noise." ACM Transactions on Graphics (TOG) 38.4 (2019): 1-13.
static constexpr int	gabor_impulses_count = 8
void	gabor (const float2 coordinates, const float scale, const float frequency, const float anisotropy, const float orientation, float r_value, float r_phase, float *r_intensity)
void	gabor (const float3 coordinates, const float scale, const float frequency, const float anisotropy, const float3 orientation, float r_value, float r_phase, float *r_intensity)
static float2	compute_2d_gabor_kernel (const float2 position, const float frequency, const float orientation)
static float	compute_2d_gabor_standard_deviation ()
static float2	compute_2d_gabor_noise_cell (const float2 cell, const float2 position, const float frequency, const float isotropy, const float base_orientation)
static float2	compute_2d_gabor_noise (const float2 coordinates, const float frequency, const float isotropy, const float base_orientation)
static float2	compute_3d_gabor_kernel (const float3 position, const float frequency, const float3 orientation)
static float	compute_3d_gabor_standard_deviation ()
static float3	compute_3d_orientation (const float3 orientation, const float isotropy, const float4 seed)
static float2	compute_3d_gabor_noise_cell (const float3 cell, const float3 position, const float frequency, const float isotropy, const float3 base_orientation)
static float2	compute_3d_gabor_noise (const float3 coordinates, const float frequency, const float isotropy, const float3 base_orientation)

Enumeration Type Documentation

◆ anonymous enum

anonymous enum

Enumerator
NOISE_SHD_VORONOI_EUCLIDEAN
NOISE_SHD_VORONOI_MANHATTAN
NOISE_SHD_VORONOI_CHEBYCHEV
NOISE_SHD_VORONOI_MINKOWSKI

Definition at line 1149 of file noise.cc.

◆ anonymous enum

anonymous enum

Enumerator
NOISE_SHD_VORONOI_F1
NOISE_SHD_VORONOI_F2
NOISE_SHD_VORONOI_SMOOTH_F1
NOISE_SHD_VORONOI_DISTANCE_TO_EDGE
NOISE_SHD_VORONOI_N_SPHERE_RADIUS

Definition at line 1156 of file noise.cc.

◆ anonymous enum

anonymous enum

Enumerator
NOISE_SHD_PERLIN_MULTIFRACTAL
NOISE_SHD_PERLIN_FBM
NOISE_SHD_PERLIN_HYBRID_MULTIFRACTAL
NOISE_SHD_PERLIN_RIDGED_MULTIFRACTAL
NOISE_SHD_PERLIN_HETERO_TERRAIN

Definition at line 843 of file noise.cc.

Function Documentation

◆ compute_2d_gabor_kernel()

float2 blender::noise::compute_2d_gabor_kernel	(	const float2	position,
		const float	frequency,
		const float	orientation )

static

Definition at line 2256 of file noise.cc.

References angle(), blender::math::cos(), cos, blender::math::dot(), blender::math::exp(), blender::math::length_squared(), blender::math::numbers::pi, blender::math::sin(), and sin.

Referenced by compute_2d_gabor_noise_cell().

◆ compute_2d_gabor_noise()

float2 blender::noise::compute_2d_gabor_noise	(	const float2	coordinates,
		const float	frequency,
		const float	isotropy,
		const float	base_orientation )

static

Definition at line 2362 of file noise.cc.

References compute_2d_gabor_noise_cell(), blender::math::floor(), i, and sum().

Referenced by gabor().

◆ compute_2d_gabor_noise_cell()

float2 blender::noise::compute_2d_gabor_noise_cell	(	const float2	cell,
		const float2	position,
		const float	frequency,
		const float	isotropy,
		const float	base_orientation )

static

Definition at line 2320 of file noise.cc.

References compute_2d_gabor_kernel(), gabor_impulses_count, hash_float_to_float(), hash_float_to_float2(), i, blender::math::length_squared(), and blender::math::numbers::pi.

Referenced by compute_2d_gabor_noise().

◆ compute_2d_gabor_standard_deviation()

float blender::noise::compute_2d_gabor_standard_deviation ( )

static

Computes the approximate standard deviation of the zero mean normal distribution representing the amplitude distribution of the noise based on Equation (9) in the original Gabor noise paper. For simplicity, the Hann window is ignored and the orientation is fixed since the variance is orientation invariant. We start integrating the squared Gabor kernel with respect to x:

\int_{-\infty}^{-\infty} (e^{- \pi (x^2 + y^2)} cos(2 \pi f_0 x))^2 dx

Which gives:

\frac{(e^{2 \pi f_0^2}-1) e^{-2 \pi y^2 - 2 pi f_0^2}}{2^\frac{3}{2}}

Then we similarly integrate with respect to y to get:

\frac{1 - e^{-2 \pi f_0^2}}{4}

Secondly, we note that the second moment of the weights distribution is 0.5 since it is a fair Bernoulli distribution. So the final standard deviation expression is square root the integral multiplied by the impulse density multiplied by the second moment.

Note however that the integral is almost constant for all frequencies larger than one, and converges to an upper limit as the frequency approaches infinity, so we replace the expression with the following limit:

\lim_{x \to \infty} \frac{1 - e^{-2 \pi f_0^2}}{4}

To get an approximation of 0.25.

Definition at line 2307 of file noise.cc.

References gabor_impulses_count, and blender::math::sqrt().

Referenced by gabor().

◆ compute_3d_gabor_kernel()

float2 blender::noise::compute_3d_gabor_kernel	(	const float3	position,
		const float	frequency,
		const float3	orientation )

static

Definition at line 2388 of file noise.cc.

References angle(), blender::math::cos(), blender::math::dot(), blender::math::exp(), blender::math::length_squared(), blender::math::numbers::pi, and blender::math::sin().

Referenced by compute_3d_gabor_noise_cell().

◆ compute_3d_gabor_noise()

float2 blender::noise::compute_3d_gabor_noise	(	const float3	coordinates,
		const float	frequency,
		const float	isotropy,
		const float3	base_orientation )

static

Definition at line 2481 of file noise.cc.

References compute_3d_gabor_noise_cell(), blender::math::floor(), i, and sum().

Referenced by gabor().

◆ compute_3d_gabor_noise_cell()

float2 blender::noise::compute_3d_gabor_noise_cell	(	const float3	cell,
		const float3	position,
		const float	frequency,
		const float	isotropy,
		const float3	base_orientation )

static

Definition at line 2445 of file noise.cc.

References compute_3d_gabor_kernel(), compute_3d_orientation(), gabor_impulses_count, hash_float_to_float(), hash_float_to_float3(), i, and blender::math::length_squared().

Referenced by compute_3d_gabor_noise().

◆ compute_3d_gabor_standard_deviation()

float blender::noise::compute_3d_gabor_standard_deviation ( )

static

Definition at line 2407 of file noise.cc.

References gabor_impulses_count, blender::math::sqrt(), and blender::math::numbers::sqrt2.

Referenced by gabor().

◆ compute_3d_orientation()

float3 blender::noise::compute_3d_orientation	(	const float3	orientation,
		const float	isotropy,
		const float4	seed )

static

Definition at line 2417 of file noise.cc.

References blender::math::acos(), blender::math::cos(), hash_float_to_float2(), blender::math::length(), blender::math::numbers::pi, seed, blender::math::sign(), and blender::math::sin().

Referenced by compute_3d_gabor_noise_cell().

◆ fade()

BLI_INLINE float blender::noise::fade ( float t )

Definition at line 462 of file noise.cc.

References BLI_INLINE.

Referenced by perlin_noise(), perlin_noise(), perlin_noise(), and perlin_noise().

◆ float_as_uint()

BLI_INLINE uint32_t blender::noise::float_as_uint ( float f )

Definition at line 142 of file noise.cc.

References BLI_INLINE, and i.

Referenced by hash_float(), hash_float(), hash_float(), and hash_float().

◆ floor_fraction()

BLI_INLINE float blender::noise::floor_fraction	(	float	x,
		int &	i )

Definition at line 505 of file noise.cc.

References BLI_INLINE, blender::math::floor(), i, and x.

Referenced by perlin_noise(), perlin_noise(), perlin_noise(), and perlin_noise().

◆ fractal_voronoi_distance_to_edge()

template<typename T>

float blender::noise::fractal_voronoi_distance_to_edge	(	const VoronoiParams &	params,
		const T	coord )

Definition at line 2137 of file noise.cc.

References ceilf, distance(), floorf, i, blender::math::min(), mix, params, T, and voronoi_distance_to_edge().

◆ fractal_voronoi_distance_to_edge< float >()

template float blender::noise::fractal_voronoi_distance_to_edge< float >	(	const VoronoiParams &	params,
		const float	coord )

References params.

Referenced by blender::nodes::node_shader_tex_voronoi_cc::VoronoiDistToEdgeFunction::call().

◆ fractal_voronoi_distance_to_edge< float2 >()

template float blender::noise::fractal_voronoi_distance_to_edge< float2 >	(	const VoronoiParams &	params,
		const float2	coord )

References params.

Referenced by blender::nodes::node_shader_tex_voronoi_cc::VoronoiDistToEdgeFunction::call().

◆ fractal_voronoi_distance_to_edge< float3 >()

template float blender::noise::fractal_voronoi_distance_to_edge< float3 >	(	const VoronoiParams &	params,
		const float3	coord )

References params.

Referenced by blender::nodes::node_shader_tex_voronoi_cc::VoronoiDistToEdgeFunction::call().

◆ fractal_voronoi_distance_to_edge< float4 >()

template float blender::noise::fractal_voronoi_distance_to_edge< float4 >	(	const VoronoiParams &	params,
		const float4	coord )

References params.

Referenced by blender::nodes::node_shader_tex_voronoi_cc::VoronoiDistToEdgeFunction::call().

◆ fractal_voronoi_x_fx()

template<typename T>

VoronoiOutput blender::noise::fractal_voronoi_x_fx	(	const VoronoiParams &	params,
		const T	coord,
		const bool	calc_color )

Definition at line 2078 of file noise.cc.

References ceilf, blender::noise::VoronoiOutput::color, blender::noise::VoronoiOutput::distance, floorf, i, mix(), mix, NOISE_SHD_VORONOI_F2, NOISE_SHD_VORONOI_SMOOTH_F1, output, params, blender::noise::VoronoiOutput::position, T, voronoi_f1(), voronoi_f2(), and voronoi_smooth_f1().

◆ fractal_voronoi_x_fx< float >()

template VoronoiOutput blender::noise::fractal_voronoi_x_fx< float >	(	const VoronoiParams &	params,
		const float	coord,
		const bool	calc_color )

References params.

Referenced by blender::nodes::node_shader_tex_voronoi_cc::VoronoiMetricFunction::call().

◆ fractal_voronoi_x_fx< float2 >()

template VoronoiOutput blender::noise::fractal_voronoi_x_fx< float2 >	(	const VoronoiParams &	params,
		const float2	coord,
		const bool	calc_color )

References params.

Referenced by blender::nodes::node_shader_tex_voronoi_cc::VoronoiMetricFunction::call().

◆ fractal_voronoi_x_fx< float3 >()

template VoronoiOutput blender::noise::fractal_voronoi_x_fx< float3 >	(	const VoronoiParams &	params,
		const float3	coord,
		const bool	calc_color )

References params.

Referenced by blender::nodes::node_shader_tex_voronoi_cc::VoronoiMetricFunction::call().

◆ fractal_voronoi_x_fx< float4 >()

template VoronoiOutput blender::noise::fractal_voronoi_x_fx< float4 >	(	const VoronoiParams &	params,
		const float4	coord,
		const bool	calc_color )

References params.

Referenced by blender::nodes::node_shader_tex_voronoi_cc::VoronoiMetricFunction::call().

◆ gabor() [1/2]

void blender::noise::gabor	(	const float2	coordinates,
		const float	scale,
		const float	frequency,
		const float	anisotropy,
		const float	orientation,
		float *	r_value,
		float *	r_phase,
		float *	r_intensity )

Definition at line 2505 of file noise.cc.

References blender::math::atan2(), blender::math::clamp(), compute_2d_gabor_noise(), compute_2d_gabor_standard_deviation(), blender::math::length(), blender::math::max(), and blender::math::numbers::pi.

Referenced by blender::nodes::node_shader_tex_gabor_cc::GaborNoiseFunction::call().

◆ gabor() [2/2]

void blender::noise::gabor	(	const float3	coordinates,
		const float	scale,
		const float	frequency,
		const float	anisotropy,
		const float3	orientation,
		float *	r_value,
		float *	r_phase,
		float *	r_intensity )

Definition at line 2544 of file noise.cc.

References blender::math::atan2(), blender::math::clamp(), compute_3d_gabor_noise(), compute_3d_gabor_standard_deviation(), blender::math::length(), blender::math::max(), blender::math::normalize(), and blender::math::numbers::pi.

◆ hash() [1/4]

uint32_t blender::noise::hash ( uint32_t kx )

Definition at line 90 of file noise.cc.

References b, and hash_bit_final().

Referenced by blender::nodes::node_geo_duplicate_elements_cc::copy_hashed_ids(), blender::nodes::node_geo_duplicate_elements_cc::copy_stable_id_edges(), blender::nodes::node_geo_duplicate_elements_cc::copy_stable_id_faces(), blender::geometry::gather_realize_tasks_for_instances(), blender::nodes::node_fn_hash_value_cc::get_multi_function(), blender::nodes::node_fn_random_value_cc::node_build_multi_function(), noise_grad(), noise_grad(), noise_grad(), noise_grad(), and blender::nodes::node_geo_distribute_points_on_faces_cc::sample_mesh_surface().

◆ hash() [2/4]

uint32_t blender::noise::hash	(	uint32_t	kx,
		uint32_t	ky )

Definition at line 101 of file noise.cc.

References b, and hash_bit_final().

◆ hash() [3/4]

uint32_t blender::noise::hash	(	uint32_t	kx,
		uint32_t	ky,
		uint32_t	kz )

Definition at line 113 of file noise.cc.

References b, and hash_bit_final().

◆ hash() [4/4]

uint32_t blender::noise::hash	(	uint32_t	kx,
		uint32_t	ky,
		uint32_t	kz,
		uint32_t	kw )

Definition at line 126 of file noise.cc.

References b, hash_bit_final(), and hash_bit_mix().

◆ hash_bit_final()

BLI_INLINE void blender::noise::hash_bit_final	(	uint32_t &	a,
		uint32_t &	b,
		uint32_t &	c )

Definition at line 72 of file noise.cc.

References b, BLI_INLINE, and hash_bit_rotate().

Referenced by hash(), hash(), hash(), and hash().

◆ hash_bit_mix()

BLI_INLINE void blender::noise::hash_bit_mix	(	uint32_t &	a,
		uint32_t &	b,
		uint32_t &	c )

Definition at line 50 of file noise.cc.

References b, BLI_INLINE, and hash_bit_rotate().

Referenced by hash().

◆ hash_bit_rotate()

BLI_INLINE uint32_t blender::noise::hash_bit_rotate	(	uint32_t	x,
		uint32_t	k )

Definition at line 45 of file noise.cc.

References BLI_INLINE, and x.

Referenced by hash_bit_final(), and hash_bit_mix().

◆ hash_float() [1/5]

uint32_t blender::noise::hash_float ( const float4x4 & k )

Definition at line 221 of file noise.cc.

References hash, and hash_float().

◆ hash_float() [2/5]

uint32_t blender::noise::hash_float ( float kx )

Definition at line 201 of file noise.cc.

References float_as_uint(), and hash.

Referenced by blender::nodes::node_fn_hash_value_cc::get_multi_function(), hash_float(), hash_float_to_float(), hash_float_to_float(), hash_float_to_float(), and hash_float_to_float().

◆ hash_float() [3/5]

uint32_t blender::noise::hash_float ( float2 k )

Definition at line 206 of file noise.cc.

References float_as_uint(), and hash.

◆ hash_float() [4/5]

uint32_t blender::noise::hash_float ( float3 k )

Definition at line 211 of file noise.cc.

References float_as_uint(), and hash.

◆ hash_float() [5/5]

uint32_t blender::noise::hash_float ( float4 k )

Definition at line 216 of file noise.cc.

References float_as_uint(), and hash.

◆ hash_float_to_float() [1/4]

float blender::noise::hash_float_to_float ( float k )

◆ hash_float_to_float() [2/4]

float blender::noise::hash_float_to_float ( float2 k )

Definition at line 260 of file noise.cc.

References hash_float(), and uint_to_float_01().

◆ hash_float_to_float() [3/4]

float blender::noise::hash_float_to_float ( float3 k )

Definition at line 265 of file noise.cc.

References hash_float(), and uint_to_float_01().

◆ hash_float_to_float() [4/4]

float blender::noise::hash_float_to_float ( float4 k )

Definition at line 270 of file noise.cc.

References hash_float(), and uint_to_float_01().

◆ hash_float_to_float2() [1/3]

float2 blender::noise::hash_float_to_float2 ( float2 k )

Definition at line 275 of file noise.cc.

References hash_float_to_float().

Referenced by compute_2d_gabor_noise_cell(), and compute_3d_orientation().

◆ hash_float_to_float2() [2/3]

float2 blender::noise::hash_float_to_float2 ( float3 k )

Definition at line 280 of file noise.cc.

References hash_float_to_float().

◆ hash_float_to_float2() [3/3]

float2 blender::noise::hash_float_to_float2 ( float4 k )

Definition at line 286 of file noise.cc.

References hash_float_to_float().

◆ hash_float_to_float3() [1/4]

float3 blender::noise::hash_float_to_float3 ( float k )

Definition at line 292 of file noise.cc.

References hash_float_to_float().

Referenced by blender::nodes::node_shader_tex_white_noise_cc::WhiteNoiseFunction::call(), compute_3d_gabor_noise_cell(), voronoi_f1(), voronoi_f2(), and voronoi_smooth_f1().

◆ hash_float_to_float3() [2/4]

float3 blender::noise::hash_float_to_float3 ( float2 k )

Definition at line 299 of file noise.cc.

References hash_float_to_float().

◆ hash_float_to_float3() [3/4]

float3 blender::noise::hash_float_to_float3 ( float3 k )

Definition at line 306 of file noise.cc.

References hash_float_to_float().

◆ hash_float_to_float3() [4/4]

float3 blender::noise::hash_float_to_float3 ( float4 k )

Definition at line 313 of file noise.cc.

References hash_float_to_float().

◆ hash_float_to_float4()

float4 blender::noise::hash_float_to_float4 ( float4 k )

Definition at line 320 of file noise.cc.

References hash_float_to_float().

◆ hash_int2_to_float2()

float2 blender::noise::hash_int2_to_float2 ( int2 k )

inlinestatic

Definition at line 335 of file noise.cc.

References hash_pcg2d_i(), and int_to_float_01().

Referenced by voronoi_distance_to_edge(), voronoi_f1(), voronoi_f2(), voronoi_n_sphere_radius(), and voronoi_smooth_f1().

◆ hash_int2_to_float3()

float3 blender::noise::hash_int2_to_float3 ( int2 k )

inlinestatic

Definition at line 354 of file noise.cc.

References hash_int3_to_float3().

Referenced by voronoi_f1(), voronoi_f2(), and voronoi_smooth_f1().

◆ hash_int3_to_float3()

float3 blender::noise::hash_int3_to_float3 ( int3 k )

inlinestatic

Definition at line 341 of file noise.cc.

References hash_pcg3d_i(), and int_to_float_01().

Referenced by hash_int2_to_float3(), voronoi_distance_to_edge(), voronoi_f1(), voronoi_f2(), voronoi_n_sphere_radius(), and voronoi_smooth_f1().

◆ hash_int4_to_float3()

float3 blender::noise::hash_int4_to_float3 ( int4 k )

inlinestatic

Definition at line 359 of file noise.cc.

References hash_int4_to_float4(), and blender::VecBase< T, Size >::xyz().

Referenced by voronoi_f1(), voronoi_f2(), and voronoi_smooth_f1().

◆ hash_int4_to_float4()

float4 blender::noise::hash_int4_to_float4 ( int4 k )

inlinestatic

Definition at line 347 of file noise.cc.

References hash_pcg4d_i(), and int_to_float_01().

Referenced by hash_int4_to_float3(), voronoi_distance_to_edge(), voronoi_f1(), voronoi_f2(), voronoi_n_sphere_radius(), and voronoi_smooth_f1().

◆ hash_pcg2d_i()

ATTR_NO_SIGNED_INT_OVERFLOW int2 blender::noise::hash_pcg2d_i ( int2 v )

inlinestatic

Definition at line 160 of file noise.cc.

References v.

Referenced by hash_int2_to_float2().

◆ hash_pcg3d_i()

ATTR_NO_SIGNED_INT_OVERFLOW int3 blender::noise::hash_pcg3d_i ( int3 v )

inlinestatic

Definition at line 172 of file noise.cc.

References v.

Referenced by hash_int3_to_float3().

◆ hash_pcg4d_i()

ATTR_NO_SIGNED_INT_OVERFLOW int4 blender::noise::hash_pcg4d_i ( int4 v )

inlinestatic

Definition at line 186 of file noise.cc.

References v.

Referenced by hash_int4_to_float4().

◆ hash_to_float() [1/4]

float blender::noise::hash_to_float ( uint32_t kx )

Definition at line 233 of file noise.cc.

References hash, and uint_to_float_01().

Referenced by blender::nodes::node_composite_glare_cc::GlareOperation::execute_sun_beams_cpu(), blender::nodes::node_composite_lensdist_cc::get_jitter(), and blender::nodes::node_fn_random_value_cc::node_build_multi_function().

◆ hash_to_float() [2/4]

float blender::noise::hash_to_float	(	uint32_t	kx,
		uint32_t	ky )

Definition at line 238 of file noise.cc.

References hash, and uint_to_float_01().

◆ hash_to_float() [3/4]

float blender::noise::hash_to_float	(	uint32_t	kx,
		uint32_t	ky,
		uint32_t	kz )

Definition at line 243 of file noise.cc.

References hash, and uint_to_float_01().

◆ hash_to_float() [4/4]

float blender::noise::hash_to_float	(	uint32_t	kx,
		uint32_t	ky,
		uint32_t	kz,
		uint32_t	kw )

Definition at line 248 of file noise.cc.

References hash, and uint_to_float_01().

◆ int_to_float_01()

float blender::noise::int_to_float_01 ( int32_t k )

inlinestatic

Definition at line 330 of file noise.cc.

References float.

Referenced by hash_int2_to_float2(), hash_int3_to_float3(), and hash_int4_to_float4().

◆ mix() [1/4]

BLI_INLINE float blender::noise::mix	(	float	v0,
		float	v1,
		float	v2,
		float	v3,
		float	v4,
		float	v5,
		float	v6,
		float	v7,
		float	v8,
		float	v9,
		float	v10,
		float	v11,
		float	v12,
		float	v13,
		float	v14,
		float	v15,
		float	x,
		float	y,
		float	z,
		float	w )

Definition at line 436 of file noise.cc.

References BLI_INLINE, mix, v2, w(), x, y, and z().

◆ mix() [2/4]

BLI_INLINE float blender::noise::mix	(	float	v0,
		float	v1,
		float	v2,
		float	v3,
		float	v4,
		float	v5,
		float	v6,
		float	v7,
		float	x,
		float	y,
		float	z )

Definition at line 416 of file noise.cc.

References BLI_INLINE, v2, x, y, and z().

◆ mix() [3/4]

BLI_INLINE float blender::noise::mix	(	float	v0,
		float	v1,
		float	v2,
		float	v3,
		float	x,
		float	y )

Definition at line 392 of file noise.cc.

References BLI_INLINE, v2, x, and y.

◆ mix() [4/4]

template<typename T>

T blender::noise::mix	(	T	v0,
		T	v1,
		float	x )

static

Definition at line 377 of file noise.cc.

References T, and x.

Referenced by fractal_voronoi_x_fx().

◆ negate_if()

BLI_INLINE float blender::noise::negate_if	(	float	value,
		uint32_t	condition )

Definition at line 467 of file noise.cc.

References BLI_INLINE.

Referenced by noise_grad(), noise_grad(), noise_grad(), and noise_grad().

◆ noise_grad() [1/4]

BLI_INLINE float blender::noise::noise_grad	(	uint32_t	hash,
		float	x )

Definition at line 472 of file noise.cc.

References BLI_INLINE, hash(), negate_if(), and x.

Referenced by perlin_noise(), perlin_noise(), perlin_noise(), and perlin_noise().

◆ noise_grad() [2/4]

BLI_INLINE float blender::noise::noise_grad	(	uint32_t	hash,
		float	x,
		float	y )

Definition at line 479 of file noise.cc.

References BLI_INLINE, hash(), negate_if(), v, x, and y.

◆ noise_grad() [3/4]

BLI_INLINE float blender::noise::noise_grad	(	uint32_t	hash,
		float	x,
		float	y,
		float	z )

Definition at line 487 of file noise.cc.

References BLI_INLINE, ELEM, hash(), negate_if(), v, x, y, and z().

◆ noise_grad() [4/4]

BLI_INLINE float blender::noise::noise_grad	(	uint32_t	hash,
		float	x,
		float	y,
		float	z,
		float	w )

Definition at line 496 of file noise.cc.

References BLI_INLINE, hash(), negate_if(), v, w(), x, y, and z().

◆ perlin() [1/4]

float blender::noise::perlin ( float position )

Definition at line 665 of file noise.cc.

References perlin_signed().

Referenced by BKE_paint_randomize_color().

◆ perlin() [2/4]

float blender::noise::perlin ( float2 position )

Definition at line 670 of file noise.cc.

References perlin_signed().

◆ perlin() [3/4]

float blender::noise::perlin ( float3 position )

Definition at line 675 of file noise.cc.

References perlin_signed().

◆ perlin() [4/4]

float blender::noise::perlin ( float4 position )

Definition at line 680 of file noise.cc.

References perlin_signed().

◆ perlin_distortion() [1/4]

BLI_INLINE float blender::noise::perlin_distortion	(	float	position,
		float	strength )

Definition at line 918 of file noise.cc.

References BLI_INLINE, perlin_signed(), and random_float_offset().

Referenced by perlin_float3_fractal_distorted(), perlin_float3_fractal_distorted(), perlin_float3_fractal_distorted(), perlin_float3_fractal_distorted(), and perlin_fractal_distorted().

◆ perlin_distortion() [2/4]

BLI_INLINE float2 blender::noise::perlin_distortion	(	float2	position,
		float	strength )

Definition at line 923 of file noise.cc.

References BLI_INLINE, perlin_signed(), and random_float2_offset().

◆ perlin_distortion() [3/4]

BLI_INLINE float3 blender::noise::perlin_distortion	(	float3	position,
		float	strength )

Definition at line 929 of file noise.cc.

References BLI_INLINE, perlin_signed(), and random_float3_offset().

◆ perlin_distortion() [4/4]

BLI_INLINE float4 blender::noise::perlin_distortion	(	float4	position,
		float	strength )

Definition at line 936 of file noise.cc.

References BLI_INLINE, perlin_signed(), and random_float4_offset().

◆ perlin_fbm()

template<typename T>

float blender::noise::perlin_fbm	(	T	p,
		float	detail,
		float	roughness,
		float	lacunarity,
		bool	normalize )

Definition at line 696 of file noise.cc.

References i, mix, normalize, perlin_signed(), sum(), and T.

Referenced by fcm_noise_evaluate(), and perlin_select().

◆ perlin_fbm< float2 >()

template float blender::noise::perlin_fbm< float2 >	(	float2	p,
		const float	detail,
		const float	roughness,
		const float	lacunarity,
		const bool	normalize )

References normalize.

◆ perlin_fbm< float3 >()

template float blender::noise::perlin_fbm< float3 >	(	float3	p,
		const float	detail,
		const float	roughness,
		const float	lacunarity,
		const bool	normalize )

References normalize.

Referenced by blender::nodes::node_shader_tex_wave_cc::WaveFunction::call().

◆ perlin_float3_fractal_distorted() [1/4]

float3 blender::noise::perlin_float3_fractal_distorted	(	float	position,
		float	detail,
		float	roughness,
		float	lacunarity,
		float	offset,
		float	gain,
		float	distortion,
		int	type,
		bool	normalize )

Definition at line 1001 of file noise.cc.

References normalize, perlin_distortion(), perlin_select(), and random_float_offset().

Referenced by blender::nodes::node_shader_tex_noise_cc::NoiseFunction::call().

◆ perlin_float3_fractal_distorted() [2/4]

float3 blender::noise::perlin_float3_fractal_distorted	(	float2	position,
		float	detail,
		float	roughness,
		float	lacunarity,
		float	offset,
		float	gain,
		float	distortion,
		int	type,
		bool	normalize )

Definition at line 1032 of file noise.cc.

References normalize, perlin_distortion(), perlin_select(), and random_float2_offset().

◆ perlin_float3_fractal_distorted() [3/4]

float3 blender::noise::perlin_float3_fractal_distorted	(	float3	position,
		float	detail,
		float	roughness,
		float	lacunarity,
		float	offset,
		float	gain,
		float	distortion,
		int	type,
		bool	normalize )

Definition at line 1063 of file noise.cc.

References normalize, perlin_distortion(), perlin_select(), and random_float3_offset().

◆ perlin_float3_fractal_distorted() [4/4]

float3 blender::noise::perlin_float3_fractal_distorted	(	float4	position,
		float	detail,
		float	roughness,
		float	lacunarity,
		float	offset,
		float	gain,
		float	distortion,
		int	type,
		bool	normalize )

Definition at line 1094 of file noise.cc.

References normalize, perlin_distortion(), perlin_select(), and random_float4_offset().

◆ perlin_fractal_distorted()

template<typename T>

float blender::noise::perlin_fractal_distorted	(	T	position,
		float	detail,
		float	roughness,
		float	lacunarity,
		float	offset,
		float	gain,
		float	distortion,
		int	type,
		bool	normalize )

Definition at line 947 of file noise.cc.

References normalize, perlin_distortion(), perlin_select(), and T.

Referenced by blender::nodes::node_shader_tex_noise_cc::NoiseFunction::call().

◆ perlin_fractal_distorted< float >()

template float blender::noise::perlin_fractal_distorted< float >	(	float	position,
		float	detail,
		float	roughness,
		float	lacunarity,
		float	offset,
		float	gain,
		float	distortion,
		int	type,
		bool	normalize )

References normalize.

◆ perlin_fractal_distorted< float2 >()

template float blender::noise::perlin_fractal_distorted< float2 >	(	float2	position,
		float	detail,
		float	roughness,
		float	lacunarity,
		float	offset,
		float	gain,
		float	distortion,
		int	type,
		bool	normalize )

References normalize.

◆ perlin_fractal_distorted< float3 >()

template float blender::noise::perlin_fractal_distorted< float3 >	(	float3	position,
		float	detail,
		float	roughness,
		float	lacunarity,
		float	offset,
		float	gain,
		float	distortion,
		int	type,
		bool	normalize )

References normalize.

◆ perlin_fractal_distorted< float4 >()

template float blender::noise::perlin_fractal_distorted< float4 >	(	float4	position,
		float	detail,
		float	roughness,
		float	lacunarity,
		float	offset,
		float	gain,
		float	distortion,
		int	type,
		bool	normalize )

References normalize.

◆ perlin_hetero_terrain()

template<typename T>

float blender::noise::perlin_hetero_terrain	(	T	p,
		const float	detail,
		const float	roughness,
		const float	lacunarity,
		const float	offset )

Definition at line 758 of file noise.cc.

References floorf, i, perlin_signed(), and T.

Referenced by perlin_select().

◆ perlin_hybrid_multi_fractal()

template<typename T>

float blender::noise::perlin_hybrid_multi_fractal	(	T	p,
		const float	detail,
		const float	roughness,
		const float	lacunarity,
		const float	offset,
		const float	gain )

Definition at line 784 of file noise.cc.

References floorf, i, perlin_signed(), and T.

Referenced by perlin_select().

◆ perlin_multi_fractal()

template<typename T>

float blender::noise::perlin_multi_fractal	(	T	p,
		const float	detail,
		const float	roughness,
		const float	lacunarity )

Definition at line 738 of file noise.cc.

References floorf, i, perlin_signed(), and T.

Referenced by perlin_select().

◆ perlin_noise() [1/4]

BLI_INLINE float blender::noise::perlin_noise ( float position )

Definition at line 512 of file noise.cc.

References BLI_INLINE, fade(), floor_fraction(), hash, mix, noise_grad(), and X.

Referenced by perlin_signed(), perlin_signed(), perlin_signed(), and perlin_signed().

◆ perlin_noise() [2/4]

BLI_INLINE float blender::noise::perlin_noise ( float2 position )

Definition at line 525 of file noise.cc.

References BLI_INLINE, fade(), floor_fraction(), hash, mix, noise_grad(), v, X, and Y.

◆ perlin_noise() [3/4]

BLI_INLINE float blender::noise::perlin_noise ( float3 position )

Definition at line 545 of file noise.cc.

References BLI_INLINE, fade(), floor_fraction(), hash, mix, noise_grad(), v, w(), X, Y, and Z.

◆ perlin_noise() [4/4]

BLI_INLINE float blender::noise::perlin_noise ( float4 position )

Definition at line 572 of file noise.cc.

References BLI_INLINE, fade(), floor_fraction(), hash, mix, noise_grad(), v, W, X, Y, and Z.

◆ perlin_ridged_multi_fractal()

template<typename T>

float blender::noise::perlin_ridged_multi_fractal	(	T	p,
		const float	detail,
		const float	roughness,
		const float	lacunarity,
		const float	offset,
		const float	gain )