bssrdf.h File Reference

Go to the source code of this file.

Classes
struct	Bssrdf

Macros
#define	GAUSS_TRUNCATE   12.46f
#define	BURLEY_TRUNCATE   16.0f
#define	BURLEY_TRUNCATE_CDF   0.9963790093708328f

Functions
ccl_device float	bssrdf_gaussian_eval (const float radius, float r)
ccl_device float	bssrdf_gaussian_pdf (const float radius, float r)
ccl_device void	bssrdf_gaussian_sample (const float radius, float xi, float *r, float *h)
ccl_device float	bssrdf_cubic_eval (const float radius, const float sharpness, float r)
ccl_device float	bssrdf_cubic_pdf (const float radius, const float sharpness, float r)
ccl_device_forceinline float	bssrdf_cubic_quintic_root_find (float xi)
ccl_device void	bssrdf_cubic_sample (const float radius, const float sharpness, float xi, float *r, float *h)
ccl_device_inline float	bssrdf_burley_fitting (float A)
ccl_device_inline float3	bssrdf_burley_compatible_mfp (float3 r)
ccl_device void	bssrdf_burley_setup (Bssrdf *bssrdf)
ccl_device float	bssrdf_burley_eval (const float d, float r)
ccl_device float	bssrdf_burley_pdf (const float d, float r)
ccl_device_forceinline float	bssrdf_burley_root_find (float xi)
ccl_device void	bssrdf_burley_sample (const float d, float xi, float *r, float *h)
ccl_device float	bssrdf_none_eval (const float radius, float r)
ccl_device float	bssrdf_none_pdf (const float radius, float r)
ccl_device void	bssrdf_none_sample (const float radius, float xi, float *r, float *h)
ccl_device_inline Bssrdf *	bssrdf_alloc (ShaderData *sd, float3 weight)
ccl_device int	bssrdf_setup (ShaderData *sd, Bssrdf *bssrdf, ClosureType type)
ccl_device void	bssrdf_sample (const ShaderClosure *sc, float xi, float *r, float *h)
ccl_device float	bssrdf_channel_pdf (const Bssrdf *bssrdf, float radius, float r)
ccl_device_forceinline float3	bssrdf_eval (const ShaderClosure *sc, float r)
ccl_device_forceinline float	bssrdf_pdf (const ShaderClosure *sc, float r)

Variables
CCL_NAMESPACE_BEGIN typedef ccl_addr_space struct Bssrdf	Bssrdf

Macro Definition Documentation

BURLEY_TRUNCATE

#define BURLEY_TRUNCATE   16.0f

Definition at line 193 of file bssrdf.h.

BURLEY_TRUNCATE_CDF

#define BURLEY_TRUNCATE_CDF   0.9963790093708328f

Definition at line 194 of file bssrdf.h.

GAUSS_TRUNCATE

#define GAUSS_TRUNCATE   12.46f

Definition at line 42 of file bssrdf.h.

Function Documentation

bssrdf_alloc()

ccl_device_inline Bssrdf* bssrdf_alloc	(	ShaderData *	sd,
		float3	weight
	)

Definition at line 332 of file bssrdf.h.

References average(), bssrdf(), closure_alloc(), CLOSURE_NONE_ID, CLOSURE_WEIGHT_CUTOFF, fabsf, and NULL.

Referenced by CBSSRDFClosure::alloc(), and svm_node_closure_bsdf().

bssrdf_burley_compatible_mfp()

ccl_device_inline float3 bssrdf_burley_compatible_mfp

(

float3

r

)

Definition at line 205 of file bssrdf.h.

References M_1_PI_F, and r.

Referenced by bssrdf_burley_setup().

bssrdf_burley_eval()

ccl_device float bssrdf_burley_eval	(	const float	d,
		float	r
	)

Definition at line 222 of file bssrdf.h.

References BURLEY_TRUNCATE, expf, and r.

Referenced by bssrdf_burley_pdf().

bssrdf_burley_fitting()

ccl_device_inline float bssrdf_burley_fitting

(

float

A

)

Definition at line 196 of file bssrdf.h.

References A.

Referenced by bssrdf_burley_setup().

bssrdf_burley_pdf()

ccl_device float bssrdf_burley_pdf	(	const float	d,
		float	r
	)

Definition at line 242 of file bssrdf.h.

References bssrdf_burley_eval(), BURLEY_TRUNCATE_CDF, and r.

Referenced by bssrdf_channel_pdf().

bssrdf_burley_root_find()

ccl_device_forceinline float bssrdf_burley_root_find

(

float

xi

)

Definition at line 251 of file bssrdf.h.

References expf, fabsf, and r.

Referenced by bssrdf_burley_sample().

bssrdf_burley_sample()

ccl_device void bssrdf_burley_sample	(	const float	d,
		float	xi,
		float *	r,
		float *	h
	)

Definition at line 287 of file bssrdf.h.

References bssrdf_burley_root_find(), BURLEY_TRUNCATE, BURLEY_TRUNCATE_CDF, r, and safe_sqrtf().

Referenced by bssrdf_sample().

bssrdf_burley_setup()

ccl_device void bssrdf_burley_setup

(

Bssrdf *

bssrdf

)

Definition at line 210 of file bssrdf.h.

References A, bssrdf(), bssrdf_burley_compatible_mfp(), bssrdf_burley_fitting(), l, and make_float3.

Referenced by bssrdf_setup().

bssrdf_channel_pdf()

ccl_device float bssrdf_channel_pdf	(	const Bssrdf *	bssrdf,
		float	radius,
		float	r
	)

Definition at line 462 of file bssrdf.h.

References bssrdf(), bssrdf_burley_pdf(), bssrdf_cubic_pdf(), bssrdf_gaussian_pdf(), CLOSURE_BSSRDF_CUBIC_ID, CLOSURE_BSSRDF_GAUSSIAN_ID, and r.

Referenced by bssrdf_eval().

bssrdf_cubic_eval()

ccl_device float bssrdf_cubic_eval	(	const float	radius,
		const float	sharpness,
		float	r
	)

Definition at line 90 of file bssrdf.h.

References M_PI_F, powf, r, sqrtf, and y.

Referenced by bssrdf_cubic_pdf().

bssrdf_cubic_pdf()

ccl_device float bssrdf_cubic_pdf	(	const float	radius,
		const float	sharpness,
		float	r
	)

Definition at line 134 of file bssrdf.h.

References bssrdf_cubic_eval(), and r.

Referenced by bssrdf_channel_pdf().

bssrdf_cubic_quintic_root_find()

ccl_device_forceinline float bssrdf_cubic_quintic_root_find

(

float

xi

)

Definition at line 140 of file bssrdf.h.

References fabsf, saturate(), x, and x2.

Referenced by bssrdf_cubic_sample().

bssrdf_cubic_sample()

ccl_device void bssrdf_cubic_sample	(	const float	radius,
		const float	sharpness,
		float	xi,
		float *	r,
		float *	h
	)

Definition at line 167 of file bssrdf.h.

References bssrdf_cubic_quintic_root_find(), powf, r, and safe_sqrtf().

Referenced by bssrdf_sample().

bssrdf_eval()

ccl_device_forceinline float3 bssrdf_eval	(	const ShaderClosure *	sc,
		float	r
	)

Definition at line 479 of file bssrdf.h.

References bssrdf(), bssrdf_channel_pdf(), make_float3, and r.

Referenced by bssrdf_pdf(), and subsurface_scatter_eval().

bssrdf_gaussian_eval()

ccl_device float bssrdf_gaussian_eval	(	const float	radius,
		float	r
	)

Definition at line 44 of file bssrdf.h.

References expf, GAUSS_TRUNCATE, M_PI_F, r, sqrtf, and v.

Referenced by bssrdf_gaussian_pdf().

bssrdf_gaussian_pdf()

ccl_device float bssrdf_gaussian_pdf	(	const float	radius,
		float	r
	)

Definition at line 57 of file bssrdf.h.

References bssrdf_gaussian_eval(), expf, GAUSS_TRUNCATE, and r.

Referenced by bssrdf_channel_pdf().

bssrdf_gaussian_sample()

ccl_device void bssrdf_gaussian_sample	(	const float	radius,
		float	xi,
		float *	r,
		float *	h
	)

Definition at line 65 of file bssrdf.h.

References expf, GAUSS_TRUNCATE, logf, r, safe_sqrtf(), sqrtf, and v.

Referenced by bssrdf_sample().

bssrdf_none_eval()

ccl_device float bssrdf_none_eval	(	const float	radius,
		float	r
	)

Definition at line 302 of file bssrdf.h.

References r.

Referenced by bssrdf_none_pdf().

bssrdf_none_pdf()

ccl_device float bssrdf_none_pdf	(	const float	radius,
		float	r
	)

Definition at line 308 of file bssrdf.h.

References blender::compositor::area(), bssrdf_none_eval(), M_PI_F, and r.

bssrdf_none_sample()

ccl_device void bssrdf_none_sample	(	const float	radius,
		float	xi,
		float *	r,
		float *	h
	)

Definition at line 317 of file bssrdf.h.

References r, safe_sqrtf(), and sqrtf.

bssrdf_pdf()

ccl_device_forceinline float bssrdf_pdf	(	const ShaderClosure *	sc,
		float	r
	)

Definition at line 488 of file bssrdf.h.

References bssrdf(), bssrdf_eval(), r, float3::x, float3::y, and float3::z.

Referenced by subsurface_scatter_eval().

bssrdf_sample()

ccl_device void bssrdf_sample	(	const ShaderClosure *	sc,
		float	xi,
		float *	r,
		float *	h
	)

Definition at line 425 of file bssrdf.h.

References bssrdf(), bssrdf_burley_sample(), bssrdf_cubic_sample(), bssrdf_gaussian_sample(), CLOSURE_BSSRDF_CUBIC_ID, CLOSURE_BSSRDF_GAUSSIAN_ID, and r.

Referenced by subsurface_scatter_disk().

bssrdf_setup()

ccl_device int bssrdf_setup	(	ShaderData *	sd,
		Bssrdf *	bssrdf,
		ClosureType	type
	)

Definition at line 345 of file bssrdf.h.

References average(), bsdf_alloc(), bsdf_diffuse_setup(), bsdf_principled_diffuse_setup(), bssrdf(), bssrdf_burley_setup(), BSSRDF_MIN_RADIUS, CLOSURE_BSDF_BSSRDF_ID, CLOSURE_BSDF_BSSRDF_PRINCIPLED_ID, CLOSURE_BSSRDF_BURLEY_ID, CLOSURE_BSSRDF_PRINCIPLED_ID, CLOSURE_BSSRDF_PRINCIPLED_RANDOM_WALK_ID, CLOSURE_BSSRDF_RANDOM_WALK_ID, fabsf, make_float3, N, PrincipledDiffuseBsdf::roughness, usdtokens::roughness(), saturate(), SD_BSSRDF, type, float3::x, float3::y, and float3::z.

Referenced by CBSSRDFClosure::alloc(), and svm_node_closure_bsdf().

Variable Documentation

Bssrdf

CCL_NAMESPACE_BEGIN typedef ccl_addr_space struct Bssrdf Bssrdf