bsdf_microfacet.h File Reference

#include "kernel/closure/bsdf_util.h"
#include "kernel/sample/pattern.h"
#include "kernel/util/lookup_table.h"

Go to the source code of this file.

Classes
struct	FresnelThinFilm
struct	FresnelDielectricTint
struct	FresnelConductor
struct	FresnelGeneralizedSchlick
struct	FresnelF82Tint
struct	MicrofacetBsdf

Typedefs
typedef struct FresnelThinFilm	FresnelThinFilm
typedef struct FresnelDielectricTint	FresnelDielectricTint
typedef struct FresnelConductor	FresnelConductor
typedef struct FresnelGeneralizedSchlick	FresnelGeneralizedSchlick
typedef struct FresnelF82Tint	FresnelF82Tint
typedef struct MicrofacetBsdf	MicrofacetBsdf

Enumerations
enum	MicrofacetType { BECKMANN , GGX }
enum	MicrofacetFresnel {   NONE = 0 , DIELECTRIC , DIELECTRIC_TINT , CONDUCTOR ,   GENERALIZED_SCHLICK , F82_TINT }

Functions
ccl_device_forceinline float3	microfacet_beckmann_sample_vndf (const float3 wi, const float alpha_x, const float alpha_y, const float2 rand)
ccl_device_forceinline float3	microfacet_ggx_sample_vndf (const float3 wi, const float alpha_x, const float alpha_y, const float2 rand)
ccl_device_forceinline void	microfacet_fresnel (KernelGlobals kg, ccl_private const MicrofacetBsdf *bsdf, const float cos_theta_i, ccl_private float *r_cos_theta_t, ccl_private Spectrum *r_reflectance, ccl_private Spectrum *r_transmittance)
ccl_device_inline void	microfacet_ggx_preserve_energy (KernelGlobals kg, ccl_private MicrofacetBsdf *bsdf, ccl_private const ShaderData *sd, const Spectrum Fss)
ccl_device Spectrum	bsdf_microfacet_estimate_albedo (KernelGlobals kg, ccl_private const ShaderData *sd, ccl_private const MicrofacetBsdf *bsdf, const bool eval_reflection, const bool eval_transmission)
template<MicrofacetType m_type>
ccl_device_inline float	bsdf_lambda_from_sqr_alpha_tan_n (float sqr_alpha_tan_n)
template<MicrofacetType m_type>
ccl_device_inline float	bsdf_lambda (float alpha2, float cos_N)
template<MicrofacetType m_type>
ccl_device_inline float	bsdf_aniso_lambda (float alpha_x, float alpha_y, float3 V)
template<MicrofacetType m_type>
ccl_device_inline float	bsdf_G (float alpha2, float cos_N)
template<MicrofacetType m_type>
ccl_device_inline float	bsdf_G (float alpha2, float cos_NI, float cos_NO)
template<MicrofacetType m_type>
ccl_device_inline float	bsdf_D (float alpha2, float cos_NH)
template<MicrofacetType m_type>
ccl_device_inline float	bsdf_aniso_D (float alpha_x, float alpha_y, float3 H)
ccl_device_forceinline int	bsdf_microfacet_eval_flag (const ccl_private MicrofacetBsdf *bsdf)
template<MicrofacetType m_type>
ccl_device Spectrum	bsdf_microfacet_eval (KernelGlobals kg, ccl_private const ShaderClosure *sc, const float3 Ng, const float3 wi, const float3 wo, ccl_private float *pdf)
template<MicrofacetType m_type>
ccl_device int	bsdf_microfacet_sample (KernelGlobals kg, ccl_private const ShaderClosure *sc, float3 Ng, float3 wi, const float3 rand, ccl_private Spectrum *eval, ccl_private float3 *wo, ccl_private float *pdf, ccl_private float2 *sampled_roughness, ccl_private float *eta)
ccl_device void	bsdf_microfacet_setup_fresnel_conductor (KernelGlobals kg, ccl_private MicrofacetBsdf *bsdf, ccl_private const ShaderData *sd, ccl_private FresnelConductor *fresnel, const bool preserve_energy)
ccl_device void	bsdf_microfacet_setup_fresnel_dielectric_tint (KernelGlobals kg, ccl_private MicrofacetBsdf *bsdf, ccl_private const ShaderData *sd, ccl_private FresnelDielectricTint *fresnel, const bool preserve_energy)
ccl_device void	bsdf_microfacet_setup_fresnel_generalized_schlick (KernelGlobals kg, ccl_private MicrofacetBsdf *bsdf, ccl_private const ShaderData *sd, ccl_private FresnelGeneralizedSchlick *fresnel, const bool preserve_energy)
ccl_device void	bsdf_microfacet_setup_fresnel_f82_tint (KernelGlobals kg, ccl_private MicrofacetBsdf *bsdf, ccl_private const ShaderData *sd, ccl_private FresnelF82Tint *fresnel, const Spectrum f82_tint, const bool preserve_energy)
ccl_device void	bsdf_microfacet_setup_fresnel_constant (KernelGlobals kg, ccl_private MicrofacetBsdf *bsdf, ccl_private const ShaderData *sd, const Spectrum color)
ccl_device void	bsdf_microfacet_setup_fresnel_dielectric (KernelGlobals kg, ccl_private MicrofacetBsdf *bsdf, ccl_private const ShaderData *sd)
ccl_device int	bsdf_microfacet_ggx_setup (ccl_private MicrofacetBsdf *bsdf)
ccl_device int	bsdf_microfacet_ggx_refraction_setup (ccl_private MicrofacetBsdf *bsdf)
ccl_device int	bsdf_microfacet_ggx_glass_setup (ccl_private MicrofacetBsdf *bsdf)
ccl_device void	bsdf_microfacet_blur (ccl_private ShaderClosure *sc, float roughness)
ccl_device Spectrum	bsdf_microfacet_ggx_eval (KernelGlobals kg, ccl_private const ShaderClosure *sc, const float3 Ng, const float3 wi, const float3 wo, ccl_private float *pdf)
ccl_device int	bsdf_microfacet_ggx_sample (KernelGlobals kg, ccl_private const ShaderClosure *sc, float3 Ng, float3 wi, const float3 rand, ccl_private Spectrum *eval, ccl_private float3 *wo, ccl_private float *pdf, ccl_private float2 *sampled_roughness, ccl_private float *eta)
ccl_device int	bsdf_microfacet_beckmann_setup (ccl_private MicrofacetBsdf *bsdf)
ccl_device int	bsdf_microfacet_beckmann_refraction_setup (ccl_private MicrofacetBsdf *bsdf)
ccl_device int	bsdf_microfacet_beckmann_glass_setup (ccl_private MicrofacetBsdf *bsdf)
ccl_device Spectrum	bsdf_microfacet_beckmann_eval (KernelGlobals kg, ccl_private const ShaderClosure *sc, const float3 Ng, const float3 wi, const float3 wo, ccl_private float *pdf)
ccl_device int	bsdf_microfacet_beckmann_sample (KernelGlobals kg, ccl_private const ShaderClosure *sc, float3 Ng, float3 wi, const float3 rand, ccl_private Spectrum *eval, ccl_private float3 *wo, ccl_private float *pdf, ccl_private float2 *sampled_roughness, ccl_private float *eta)

Typedef Documentation

FresnelConductor

typedef struct FresnelConductor FresnelConductor

FresnelDielectricTint

typedef struct FresnelDielectricTint FresnelDielectricTint

FresnelF82Tint

typedef struct FresnelF82Tint FresnelF82Tint

FresnelGeneralizedSchlick

typedef struct FresnelGeneralizedSchlick FresnelGeneralizedSchlick

FresnelThinFilm

typedef struct FresnelThinFilm FresnelThinFilm

MicrofacetBsdf

typedef struct MicrofacetBsdf MicrofacetBsdf

Enumeration Type Documentation

MicrofacetFresnel

enum MicrofacetFresnel

Enumerator
NONE
DIELECTRIC
DIELECTRIC_TINT
CONDUCTOR
GENERALIZED_SCHLICK
F82_TINT

Definition at line 23 of file bsdf_microfacet.h.

MicrofacetType

enum MicrofacetType

Enumerator
BECKMANN
GGX

Definition at line 18 of file bsdf_microfacet.h.

Function Documentation

bsdf_aniso_D()

template<MicrofacetType m_type>

ccl_device_inline float bsdf_aniso_D	(	float	alpha_x,
		float	alpha_y,
		float3	H )

Definition at line 524 of file bsdf_microfacet.h.

References BECKMANN, expf, GGX, H, kernel_assert, len_squared(), M_PI_F, m_type, make_float3(), and sqr().

Referenced by bsdf_microfacet_eval(), and bsdf_microfacet_sample().

bsdf_aniso_lambda()

template<MicrofacetType m_type>

ccl_device_inline float bsdf_aniso_lambda	(	float	alpha_x,
		float	alpha_y,
		float3	V )

Definition at line 489 of file bsdf_microfacet.h.

References bsdf_lambda_from_sqr_alpha_tan_n(), sqr(), and V.

Referenced by bsdf_microfacet_eval(), and bsdf_microfacet_sample().

bsdf_D()

template<MicrofacetType m_type>

ccl_device_inline float bsdf_D	(	float	alpha2,
		float	cos_NH )

Definition at line 509 of file bsdf_microfacet.h.

References BECKMANN, expf, GGX, kernel_assert, M_PI_F, m_type, min, and sqr().

Referenced by bsdf_hair_huang_eval_r(), bsdf_hair_huang_eval_residual(), bsdf_microfacet_eval(), and bsdf_microfacet_sample().

bsdf_G() [1/2]

template<MicrofacetType m_type>

ccl_device_inline float bsdf_G	(	float	alpha2,
		float	cos_N )

Definition at line 496 of file bsdf_microfacet.h.

References bsdf_lambda().

Referenced by bsdf_hair_huang_eval_r(), and bsdf_hair_huang_eval_residual().

bsdf_G() [2/2]

template<MicrofacetType m_type>

ccl_device_inline float bsdf_G	(	float	alpha2,
		float	cos_NI,
		float	cos_NO )

Definition at line 503 of file bsdf_microfacet.h.

References bsdf_lambda().

bsdf_lambda()

template<MicrofacetType m_type>

ccl_device_inline float bsdf_lambda	(	float	alpha2,
		float	cos_N )

Definition at line 483 of file bsdf_microfacet.h.

References bsdf_lambda_from_sqr_alpha_tan_n(), fmaxf, and sqr().

Referenced by bsdf_G(), bsdf_G(), bsdf_Go(), bsdf_microfacet_eval(), and bsdf_microfacet_sample().

bsdf_lambda_from_sqr_alpha_tan_n()

template<MicrofacetType m_type>

ccl_device_inline float bsdf_lambda_from_sqr_alpha_tan_n

(

float

sqr_alpha_tan_n

)

Definition at line 464 of file bsdf_microfacet.h.

References BECKMANN, GGX, inversesqrtf(), kernel_assert, m_type, and sqrtf.

Referenced by bsdf_aniso_lambda(), and bsdf_lambda().

bsdf_microfacet_beckmann_eval()

ccl_device Spectrum bsdf_microfacet_beckmann_eval	(	KernelGlobals	kg,
		ccl_private const ShaderClosure *	sc,
		const float3	Ng,
		const float3	wi,
		const float3	wo,
		ccl_private float *	pdf )

Definition at line 1038 of file bsdf_microfacet.h.

References bsdf_microfacet_eval().

Referenced by bsdf_eval().

bsdf_microfacet_beckmann_glass_setup()

ccl_device int bsdf_microfacet_beckmann_glass_setup

(

ccl_private MicrofacetBsdf *

bsdf

)

Definition at line 1027 of file bsdf_microfacet.h.

References bsdf_microfacet_eval_flag(), CLOSURE_BSDF_MICROFACET_BECKMANN_GLASS_ID, DIELECTRIC, saturatef, SD_BSDF, and SD_BSDF_HAS_TRANSMISSION.

Referenced by osl_closure_dielectric_bsdf_setup(), osl_closure_generalized_schlick_bsdf_setup(), osl_closure_microfacet_setup(), and svm_node_closure_bsdf().

bsdf_microfacet_beckmann_refraction_setup()

ccl_device int bsdf_microfacet_beckmann_refraction_setup

(

ccl_private MicrofacetBsdf *

bsdf

)

Definition at line 1016 of file bsdf_microfacet.h.

References bsdf_microfacet_eval_flag(), CLOSURE_BSDF_MICROFACET_BECKMANN_REFRACTION_ID, NONE, saturatef, SD_BSDF, and SD_BSDF_HAS_TRANSMISSION.

Referenced by osl_closure_dielectric_bsdf_setup(), osl_closure_generalized_schlick_bsdf_setup(), osl_closure_microfacet_setup(), and svm_node_closure_bsdf().

bsdf_microfacet_beckmann_sample()

ccl_device int bsdf_microfacet_beckmann_sample	(	KernelGlobals	kg,
		ccl_private const ShaderClosure *	sc,
		float3	Ng,
		float3	wi,
		const float3	rand,
		ccl_private Spectrum *	eval,
		ccl_private float3 *	wo,
		ccl_private float *	pdf,
		ccl_private float2 *	sampled_roughness,
		ccl_private float *	eta )

Definition at line 1048 of file bsdf_microfacet.h.

References bsdf_microfacet_sample().

Referenced by bsdf_sample().

bsdf_microfacet_beckmann_setup()

ccl_device int bsdf_microfacet_beckmann_setup

(

ccl_private MicrofacetBsdf *

bsdf

)

Definition at line 1005 of file bsdf_microfacet.h.

References bsdf_microfacet_eval_flag(), CLOSURE_BSDF_MICROFACET_BECKMANN_ID, NONE, saturatef, and SD_BSDF.

Referenced by osl_closure_conductor_bsdf_setup(), osl_closure_dielectric_bsdf_setup(), osl_closure_generalized_schlick_bsdf_setup(), osl_closure_microfacet_f82_tint_setup(), osl_closure_microfacet_setup(), and svm_node_closure_bsdf().

bsdf_microfacet_blur()

ccl_device void bsdf_microfacet_blur	(	ccl_private ShaderClosure *	sc,
		float	roughness )

Definition at line 963 of file bsdf_microfacet.h.

References MicrofacetBsdf::alpha_x, ccl_private, and fmaxf.

Referenced by bsdf_blur().

bsdf_microfacet_estimate_albedo()

ccl_device Spectrum bsdf_microfacet_estimate_albedo	(	KernelGlobals	kg,
		ccl_private const ShaderData *	sd,
		ccl_private const MicrofacetBsdf *	bsdf,
		const bool	eval_reflection,
		const bool	eval_transmission )

Definition at line 408 of file bsdf_microfacet.h.

References ccl_private, dot(), F82_TINT, fabsf, float, GENERALIZED_SCHLICK, is_zero(), kernel_data, lookup_table_read_3D(), microfacet_fresnel(), mix, one_spectrum, sqrtf, and z().

Referenced by bsdf_albedo(), bsdf_microfacet_setup_fresnel_conductor(), bsdf_microfacet_setup_fresnel_dielectric(), bsdf_microfacet_setup_fresnel_dielectric_tint(), bsdf_microfacet_setup_fresnel_f82_tint(), and bsdf_microfacet_setup_fresnel_generalized_schlick().

bsdf_microfacet_eval()

template<MicrofacetType m_type>

ccl_device Spectrum bsdf_microfacet_eval	(	KernelGlobals	kg,
		ccl_private const ShaderClosure *	sc,
		const float3	Ng,
		const float3	wi,
		const float3	wo,
		ccl_private float *	pdf )

Definition at line 547 of file bsdf_microfacet.h.

References average(), bsdf_aniso_D(), bsdf_aniso_lambda(), bsdf_D(), bsdf_lambda(), bsdf_microfacet_eval_flag(), ccl_private, CLOSURE_IS_GLASS, CLOSURE_IS_REFRACTION, D, dot(), fabsf, H, is_zero(), len, make_float3(), make_orthonormals_tangent(), microfacet_fresnel(), N, safe_divide(), sqr(), X, Y, and zero_spectrum.

Referenced by bsdf_microfacet_beckmann_eval(), and bsdf_microfacet_ggx_eval().

bsdf_microfacet_eval_flag()

ccl_device_forceinline int bsdf_microfacet_eval_flag

(

const ccl_private MicrofacetBsdf *

bsdf

)

Definition at line 541 of file bsdf_microfacet.h.

References BSDF_ROUGHNESS_SQ_THRESH, and SD_BSDF_HAS_EVAL.

Referenced by bsdf_label(), bsdf_microfacet_beckmann_glass_setup(), bsdf_microfacet_beckmann_refraction_setup(), bsdf_microfacet_beckmann_setup(), bsdf_microfacet_eval(), bsdf_microfacet_ggx_glass_setup(), bsdf_microfacet_ggx_refraction_setup(), bsdf_microfacet_ggx_setup(), and bsdf_microfacet_sample().

bsdf_microfacet_ggx_eval()

ccl_device Spectrum bsdf_microfacet_ggx_eval	(	KernelGlobals	kg,
		ccl_private const ShaderClosure *	sc,
		const float3	Ng,
		const float3	wi,
		const float3	wo,
		ccl_private float *	pdf )

Definition at line 971 of file bsdf_microfacet.h.

References bsdf_microfacet_eval(), ccl_private, and MicrofacetBsdf::energy_scale.

Referenced by bsdf_eval().

bsdf_microfacet_ggx_glass_setup()

ccl_device int bsdf_microfacet_ggx_glass_setup

(

ccl_private MicrofacetBsdf *

bsdf

)

Definition at line 951 of file bsdf_microfacet.h.

References bsdf_microfacet_eval_flag(), CLOSURE_BSDF_MICROFACET_GGX_GLASS_ID, DIELECTRIC, saturatef, SD_BSDF, and SD_BSDF_HAS_TRANSMISSION.

Referenced by osl_closure_dielectric_bsdf_setup(), osl_closure_generalized_schlick_bsdf_setup(), osl_closure_microfacet_multi_ggx_glass_setup(), osl_closure_microfacet_setup(), precompute_ggx_glass_E(), and svm_node_closure_bsdf().

bsdf_microfacet_ggx_refraction_setup()

ccl_device int bsdf_microfacet_ggx_refraction_setup

(

ccl_private MicrofacetBsdf *

bsdf

)

Definition at line 939 of file bsdf_microfacet.h.

References bsdf_microfacet_eval_flag(), CLOSURE_BSDF_MICROFACET_GGX_REFRACTION_ID, NONE, saturatef, SD_BSDF, and SD_BSDF_HAS_TRANSMISSION.

Referenced by osl_closure_dielectric_bsdf_setup(), osl_closure_generalized_schlick_bsdf_setup(), osl_closure_microfacet_setup(), osl_closure_refraction_setup(), and svm_node_closure_bsdf().

bsdf_microfacet_ggx_sample()

ccl_device int bsdf_microfacet_ggx_sample	(	KernelGlobals	kg,
		ccl_private const ShaderClosure *	sc,
		float3	Ng,
		float3	wi,
		const float3	rand,
		ccl_private Spectrum *	eval,
		ccl_private float3 *	wo,
		ccl_private float *	pdf,
		ccl_private float2 *	sampled_roughness,
		ccl_private float *	eta )

Definition at line 982 of file bsdf_microfacet.h.

References bsdf_microfacet_sample(), ccl_private, and label.

Referenced by bsdf_sample(), precompute_ggx_E(), precompute_ggx_gen_schlick_s(), and precompute_ggx_glass_E().

bsdf_microfacet_ggx_setup()

ccl_device int bsdf_microfacet_ggx_setup

(

ccl_private MicrofacetBsdf *

bsdf

)

Definition at line 927 of file bsdf_microfacet.h.

References bsdf_microfacet_eval_flag(), CLOSURE_BSDF_MICROFACET_GGX_ID, NONE, saturatef, and SD_BSDF.

Referenced by osl_closure_conductor_bsdf_setup(), osl_closure_dielectric_bsdf_setup(), osl_closure_generalized_schlick_bsdf_setup(), osl_closure_microfacet_f82_tint_setup(), osl_closure_microfacet_multi_ggx_aniso_setup(), osl_closure_microfacet_setup(), osl_closure_reflection_setup(), precompute_ggx_E(), precompute_ggx_gen_schlick_s(), and svm_node_closure_bsdf().

bsdf_microfacet_sample()

template<MicrofacetType m_type>

ccl_device int bsdf_microfacet_sample	(	KernelGlobals	kg,
		ccl_private const ShaderClosure *	sc,
		float3	Ng,
		float3	wi,
		const float3	rand,
		ccl_private Spectrum *	eval,
		ccl_private float3 *	wo,
		ccl_private float *	pdf,
		ccl_private float2 *	sampled_roughness,
		ccl_private float *	eta )

Definition at line 637 of file bsdf_microfacet.h.

References average(), bsdf_aniso_D(), bsdf_aniso_lambda(), bsdf_D(), bsdf_lambda(), bsdf_microfacet_eval_flag(), ccl_private, D, dot(), fabsf, float3_to_float2(), GGX, H, is_zero(), LABEL_GLOSSY, LABEL_NONE, LABEL_REFLECT, LABEL_SINGULAR, LABEL_TRANSMIT, m_type, make_float2(), make_float3(), make_orthonormals(), make_orthonormals_tangent(), microfacet_beckmann_sample_vndf(), microfacet_fresnel(), microfacet_ggx_sample_vndf(), N, refract_angle(), sqr(), X, float3::x, Y, float3::y, and float3::z.

Referenced by bsdf_microfacet_beckmann_sample(), and bsdf_microfacet_ggx_sample().

bsdf_microfacet_setup_fresnel_conductor()

ccl_device void bsdf_microfacet_setup_fresnel_conductor	(	KernelGlobals	kg,
		ccl_private MicrofacetBsdf *	bsdf,
		ccl_private const ShaderData *	sd,
		ccl_private FresnelConductor *	fresnel,
		const bool	preserve_energy )

Definition at line 770 of file bsdf_microfacet.h.

References average(), B, bsdf_microfacet_estimate_albedo(), CONDUCTOR, fresnel_conductor(), microfacet_ggx_preserve_energy(), mix, one_spectrum, and saturate.

Referenced by osl_closure_conductor_bsdf_setup(), and svm_node_closure_bsdf().

bsdf_microfacet_setup_fresnel_constant()

ccl_device void bsdf_microfacet_setup_fresnel_constant	(	KernelGlobals	kg,
		ccl_private MicrofacetBsdf *	bsdf,
		ccl_private const ShaderData *	sd,
		const Spectrum	color )

Definition at line 893 of file bsdf_microfacet.h.

References DIELECTRIC, kernel_assert, microfacet_ggx_preserve_energy(), and NONE.

Referenced by osl_closure_microfacet_multi_ggx_aniso_setup(), osl_closure_microfacet_multi_ggx_glass_setup(), osl_closure_microfacet_setup(), and svm_node_closure_bsdf().

bsdf_microfacet_setup_fresnel_dielectric()

ccl_device void bsdf_microfacet_setup_fresnel_dielectric	(	KernelGlobals	kg,
		ccl_private MicrofacetBsdf *	bsdf,
		ccl_private const ShaderData *	sd )

Definition at line 906 of file bsdf_microfacet.h.

References average(), bsdf_microfacet_estimate_albedo(), and DIELECTRIC.

Referenced by svm_node_closure_bsdf().

bsdf_microfacet_setup_fresnel_dielectric_tint()

ccl_device void bsdf_microfacet_setup_fresnel_dielectric_tint	(	KernelGlobals	kg,
		ccl_private MicrofacetBsdf *	bsdf,
		ccl_private const ShaderData *	sd,
		ccl_private FresnelDielectricTint *	fresnel,
		const bool	preserve_energy )

Definition at line 792 of file bsdf_microfacet.h.

References average(), bsdf_microfacet_estimate_albedo(), DIELECTRIC_TINT, and microfacet_ggx_preserve_energy().

Referenced by osl_closure_dielectric_bsdf_setup().

bsdf_microfacet_setup_fresnel_f82_tint()

ccl_device void bsdf_microfacet_setup_fresnel_f82_tint	(	KernelGlobals	kg,
		ccl_private MicrofacetBsdf *	bsdf,
		ccl_private const ShaderData *	sd,
		ccl_private FresnelF82Tint *	fresnel,
		const Spectrum	f82_tint,
		const bool	preserve_energy )

Definition at line 859 of file bsdf_microfacet.h.

References average(), bsdf_microfacet_estimate_albedo(), F82_TINT, isequal(), microfacet_ggx_preserve_energy(), mix, one_spectrum, sqr(), and zero_spectrum.

Referenced by osl_closure_microfacet_f82_tint_setup(), and svm_node_closure_bsdf().

bsdf_microfacet_setup_fresnel_generalized_schlick()

ccl_device void bsdf_microfacet_setup_fresnel_generalized_schlick	(	KernelGlobals	kg,
		ccl_private MicrofacetBsdf *	bsdf,
		ccl_private const ShaderData *	sd,
		ccl_private FresnelGeneralizedSchlick *	fresnel,
		const bool	preserve_energy )

Definition at line 809 of file bsdf_microfacet.h.

References average(), bsdf_microfacet_estimate_albedo(), F0_from_ior(), GENERALIZED_SCHLICK, inverse_lerp(), is_zero(), microfacet_ggx_preserve_energy(), mix, one_spectrum, saturate, and saturatef.

Referenced by osl_closure_generalized_schlick_bsdf_setup(), and svm_node_closure_bsdf().

microfacet_beckmann_sample_vndf()

ccl_device_forceinline float3 microfacet_beckmann_sample_vndf	(	const float3	wi,
		const float	alpha_x,
		const float	alpha_y,
		const float2	rand )

Definition at line 92 of file bsdf_microfacet.h.

References b, cosf, expf, fabsf, fast_erff(), fast_ierff(), K, logf, M_2PI_F, make_float2(), make_float3(), normalize(), signf(), sin_from_cos(), sinf, sqr(), sqrtf, float2::x, float3::x, float2::y, float3::y, and float3::z.

Referenced by bsdf_microfacet_sample().

microfacet_fresnel()

ccl_device_forceinline void microfacet_fresnel	(	KernelGlobals	kg,
		ccl_private const MicrofacetBsdf *	bsdf,
		const float	cos_theta_i,
		ccl_private float *	r_cos_theta_t,
		ccl_private Spectrum *	r_reflectance,
		ccl_private Spectrum *	r_transmittance )

Definition at line 229 of file bsdf_microfacet.h.

References ccl_private, CLOSURE_IS_GLASS, CLOSURE_IS_REFRACTION, CONDUCTOR, DIELECTRIC, DIELECTRIC_TINT, F, F0_from_ior(), F82_TINT, float, FOREACH_SPECTRUM_CHANNEL, fresnel_conductor(), fresnel_dielectric(), fresnel_iridescence(), GENERALIZED_SCHLICK, GET_SPECTRUM_CHANNEL, inverse_lerp(), isequal(), kernel_assert, make_spectrum, mix, NONE, one_spectrum, powf, saturate, saturatef, sqr(), sqrtf, and zero_spectrum.

Referenced by bsdf_microfacet_estimate_albedo(), bsdf_microfacet_eval(), and bsdf_microfacet_sample().

microfacet_ggx_preserve_energy()

ccl_device_inline void microfacet_ggx_preserve_energy	(	KernelGlobals	kg,
		ccl_private MicrofacetBsdf *	bsdf,
		ccl_private const ShaderData *	sd,
		const Spectrum	Fss )

Definition at line 345 of file bsdf_microfacet.h.

References average(), CLOSURE_BSDF_MICROFACET_GGX_GLASS_ID, CLOSURE_BSDF_MICROFACET_GGX_ID, dot(), fabsf, isequal(), kernel_assert, kernel_data, lookup_table_read(), lookup_table_read_2D(), lookup_table_read_3D(), one_spectrum, sqrtf, and z().

Referenced by bsdf_microfacet_setup_fresnel_conductor(), bsdf_microfacet_setup_fresnel_constant(), bsdf_microfacet_setup_fresnel_dielectric_tint(), bsdf_microfacet_setup_fresnel_f82_tint(), and bsdf_microfacet_setup_fresnel_generalized_schlick().

microfacet_ggx_sample_vndf()

ccl_device_forceinline float3 microfacet_ggx_sample_vndf	(	const float3	wi,
		const float	alpha_x,
		const float	alpha_y,
		const float2	rand )

Definition at line 193 of file bsdf_microfacet.h.

References cross(), inversesqrtf(), len_squared(), make_float3(), mix, normalize(), safe_sqrtf(), sample_uniform_disk(), sqr(), T1, T2, float2::x, float3::x, float2::y, float3::y, and float3::z.

Referenced by bsdf_microfacet_sample(), and sample_wh().