#include "util/math_fast.h"
#include "util/projection.h"

Functions
CCL_NAMESPACE_BEGIN ccl_device float3	phase_sample_direction (const float3 D, const float cos_theta, const float rand)
ccl_device float	phase_henyey_greenstein (const float cos_theta, const float g)
ccl_device float3	phase_henyey_greenstein_sample (const float3 D, const float g, const float2 rand, ccl_private float *pdf)
ccl_device float	phase_rayleigh (const float cos_theta)
ccl_device float3	phase_rayleigh_sample (const float3 D, const float2 rand, ccl_private float *pdf)
ccl_device float	phase_draine (const float cos_theta, const float g, float alpha)
ccl_device float	phase_draine_sample_cos (const float g, const float alpha, const float rand)
ccl_device float3	phase_draine_sample (const float3 D, const float g, float alpha, const float2 rand, ccl_private float *pdf)
ccl_device float	phase_fournier_forand_delta (const float n, const float sin_htheta_sqr)
ccl_device_inline float3	phase_fournier_forand_coeffs (const float B, const float IOR)
ccl_device_inline float	phase_fournier_forand_impl (float cos_theta, const float delta, const float pow_delta_v, const float v, float sin_htheta_sqr, const float pf_coeff)
ccl_device float	phase_fournier_forand (const float cos_theta, const float3 coeffs)
ccl_device float	phase_fournier_forand_newton (const float rand, const float3 coeffs)
ccl_device float3	phase_fournier_forand_sample (const float3 D, const float3 coeffs, const float2 rand, ccl_private float *pdf)
ccl_device void	phase_mie_fitted_parameters (float d, ccl_private float g_HG, ccl_private float g_D, ccl_private float alpha, ccl_private float w)

Function Documentation

◆ phase_draine()

ccl_device float phase_draine	(	const float	cos_theta,
		const float	g,
		float	alpha )

Definition at line 79 of file volume_util.h.

References ccl_device, cos_theta(), fabsf, M_4PI_F, phase_henyey_greenstein(), phase_rayleigh(), sqr(), and sqrtf.

Referenced by phase_draine_sample(), and volume_draine_eval().

◆ phase_draine_sample()

ccl_device float3 phase_draine_sample	(	const float3	D,
		const float	g,
		float	alpha,
		const float2	rand,
		ccl_private float *	pdf )

Definition at line 129 of file volume_util.h.

References ccl_device, ccl_private, cos_theta(), D, fabsf, phase_draine(), phase_draine_sample_cos(), phase_henyey_greenstein_sample(), phase_rayleigh_sample(), phase_sample_direction(), float2::x, and float2::y.

Referenced by volume_draine_sample().

◆ phase_draine_sample_cos()

ccl_device float phase_draine_sample_cos	(	const float	g,
		const float	alpha,
		const float	rand )

Definition at line 96 of file volume_util.h.

References ccl_device, fabsf, fast_inv_cbrtf(), M_CBRT2_F, sqr(), sqrtf, T10, T2, T3, T4, T5, T6, T7, T8, and T9.

Referenced by phase_draine_sample().

◆ phase_fournier_forand()

ccl_device float phase_fournier_forand	(	const float	cos_theta,
		const float3	coeffs )

Definition at line 190 of file volume_util.h.

References ccl_device, cos_theta(), fabsf, M_PI_F, phase_fournier_forand_delta(), phase_fournier_forand_impl(), powf, v, float3::x, float3::y, and float3::z.

Referenced by phase_fournier_forand_sample(), and volume_fournier_forand_eval().

◆ phase_fournier_forand_coeffs()

ccl_device_inline float3 phase_fournier_forand_coeffs	(	const float	B,
		const float	IOR )

Definition at line 152 of file volume_util.h.

References B, ccl_device_inline, logf, make_float3(), phase_fournier_forand_delta(), powf, and v.

Referenced by volume_fournier_forand_setup().

◆ phase_fournier_forand_delta()

ccl_device float phase_fournier_forand_delta	(	const float	n,
		const float	sin_htheta_sqr )

Definition at line 146 of file volume_util.h.

References ccl_device, and sqr().

Referenced by phase_fournier_forand(), phase_fournier_forand_coeffs(), and phase_fournier_forand_newton().

◆ phase_fournier_forand_impl()

ccl_device_inline float phase_fournier_forand_impl	(	float	cos_theta,
		const float	delta,
		const float	pow_delta_v,
		const float	v,
		float	sin_htheta_sqr,
		const float	pf_coeff )

Definition at line 165 of file volume_util.h.

References ccl_device_inline, cos_theta(), fabsf, M_4PI_F, m_delta, M_PI_F, pf, sqr(), and v.

Referenced by phase_fournier_forand(), and phase_fournier_forand_newton().

◆ phase_fournier_forand_newton()

ccl_device float phase_fournier_forand_newton	(	const float	rand,
		const float3	coeffs )

Definition at line 205 of file volume_util.h.

References ccl_device, cos_theta(), fabsf, M_1_2PI_F, m_delta, M_PI_F, max, mix, pf, phase_fournier_forand_delta(), phase_fournier_forand_impl(), powf, sqr(), v, float3::x, float3::y, and float3::z.

Referenced by phase_fournier_forand_sample().

◆ phase_fournier_forand_sample()

ccl_device float3 phase_fournier_forand_sample	(	const float3	D,
		const float3	coeffs,
		const float2	rand,
		ccl_private float *	pdf )

Definition at line 249 of file volume_util.h.

References ccl_device, ccl_private, cos_theta(), D, phase_fournier_forand(), phase_fournier_forand_newton(), phase_sample_direction(), float2::x, and float2::y.

Referenced by volume_fournier_forand_sample().

◆ phase_henyey_greenstein()

ccl_device float phase_henyey_greenstein	(	const float	cos_theta,
		const float	g )

Definition at line 27 of file volume_util.h.

References ccl_device, cos_theta(), fabsf, M_1_4PI_F, M_4PI_F, safe_sqrtf(), and sqr().

Referenced by phase_draine(), phase_henyey_greenstein_sample(), and volume_henyey_greenstein_eval().

◆ phase_henyey_greenstein_sample()

ccl_device float3 phase_henyey_greenstein_sample	(	const float3	D,
		const float	g,
		const float2	rand,
		ccl_private float *	pdf )

Definition at line 36 of file volume_util.h.

References ccl_device, ccl_private, cos_theta(), D, fabsf, phase_henyey_greenstein(), phase_sample_direction(), sqr(), float2::x, and float2::y.

Referenced by phase_draine_sample(), and volume_henyey_greenstein_sample().

◆ phase_mie_fitted_parameters()

ccl_device void phase_mie_fitted_parameters	(	float	d,
		ccl_private float *	g_HG,
		ccl_private float *	g_D,
		ccl_private float *	alpha,
		ccl_private float *	w )