point.h File Reference

#include "kernel/light/common.h"

Go to the source code of this file.

Functions
CCL_NAMESPACE_BEGIN ccl_device_inline bool	point_light_sample (const ccl_global KernelLight *klight, const float2 rand, const float3 P, const float3 N, const int shader_flags, ccl_private LightSample *ls)
ccl_device_forceinline float	sphere_light_pdf (const float d_sq, const float r_sq, const float3 N, const float3 D, const uint32_t path_flag)
ccl_device_forceinline void	point_light_mnee_sample_update (const ccl_global KernelLight *klight, ccl_private LightSample *ls, const float3 P, const float3 N, const uint32_t path_flag)
ccl_device_inline bool	point_light_intersect (const ccl_global KernelLight *klight, const ccl_private Ray *ccl_restrict ray, ccl_private float *t)
ccl_device_inline bool	point_light_sample_from_intersection (const ccl_global KernelLight *klight, const float3 ray_P, const float3 ray_D, const float3 N, const uint32_t path_flag, ccl_private LightSample *ccl_restrict ls)
template<bool in_volume_segment>
ccl_device_forceinline bool	point_light_tree_parameters (const ccl_global KernelLight *klight, const float3 centroid, const float3 P, ccl_private float &cos_theta_u, ccl_private float2 &distance, ccl_private float3 &point_to_centroid)

Function Documentation

point_light_intersect()

ccl_device_inline bool point_light_intersect	(	const ccl_global KernelLight *	klight,
		const ccl_private Ray *ccl_restrict	ray,
		ccl_private float *	t )

Definition at line 130 of file light/point.h.

References normalize(), P, ray_disk_intersect(), and ray_sphere_intersect().

Referenced by lights_intersect_impl(), and spot_light_intersect().

point_light_mnee_sample_update()

ccl_device_forceinline void point_light_mnee_sample_update	(	const ccl_global KernelLight *	klight,
		ccl_private LightSample *	ls,
		const float3	P,
		const float3	N,
		const uint32_t	path_flag )

Definition at line 93 of file light/point.h.

References fabsf, len_squared(), M_PI_F, map_to_sphere(), N, normalize(), normalize_len(), P, sphere_light_pdf(), sqr(), transform_direction(), float2::x, and float2::y.

Referenced by light_sample_update().

point_light_sample()

CCL_NAMESPACE_BEGIN ccl_device_inline bool point_light_sample	(	const ccl_global KernelLight *	klight,
		const float2	rand,
		const float3	P,
		const float3	N,
		const int	shader_flags,
		ccl_private LightSample *	ls )

Definition at line 11 of file light/point.h.

References copysignf, cos_theta(), disk_light_sample(), dot(), len_squared(), light_pdf_area_to_solid_angle(), M_PI_F, map_to_sphere(), N, normalize(), normalize_len(), one_minus_cos(), P, safe_sqrtf(), sample_cos_hemisphere(), sample_uniform_cone(), sample_uniform_sphere(), SD_BSDF_HAS_TRANSMISSION, sin_sqr_to_one_minus_cos(), sqr(), sqrtf, transform_direction(), float2::x, and float2::y.

Referenced by light_sample().

point_light_sample_from_intersection()

ccl_device_inline bool point_light_sample_from_intersection	(	const ccl_global KernelLight *	klight,
		const float3	ray_P,
		const float3	ray_D,
		const float3	N,
		const uint32_t	path_flag,
		ccl_private LightSample *ccl_restrict	ls )

Definition at line 151 of file light/point.h.

References FLT_MAX, len_squared(), light_pdf_area_to_solid_angle(), M_PI_F, map_to_sphere(), N, normalize(), sphere_light_pdf(), sqr(), transform_direction(), float2::x, and float2::y.

Referenced by light_sample_from_intersection().

point_light_tree_parameters()

template<bool in_volume_segment>

ccl_device_forceinline bool point_light_tree_parameters	(	const ccl_global KernelLight *	klight,
		const float3	centroid,
		const float3	P,
		ccl_private float &	cos_theta_u,
		ccl_private float2 &	distance,
		ccl_private float3 &	point_to_centroid )

Definition at line 191 of file light/point.h.

References cos_from_sin(), one_float2(), P, safe_normalize_len(), sqr(), and sqrtf.

Referenced by light_tree_emitter_importance().

sphere_light_pdf()

ccl_device_forceinline float sphere_light_pdf	(	const float	d_sq,
		const float	r_sq,
		const float3	N,
		const float3	D,
		const uint32_t	path_flag )

Definition at line 82 of file light/point.h.

References N, PATH_RAY_MIS_HAD_TRANSMISSION, pdf_cos_hemisphere(), and sin_sqr_to_one_minus_cos().

Referenced by point_light_mnee_sample_update(), and point_light_sample_from_intersection().