background.h File Reference

#include "kernel/light/area.h"
#include "kernel/light/common.h"

Go to the source code of this file.

Functions
CCL_NAMESPACE_BEGIN ccl_device float3	background_map_sample (KernelGlobals kg, float2 rand, ccl_private float *pdf)
ccl_device float	background_map_pdf (KernelGlobals kg, float3 direction)
ccl_device_inline bool	background_portal_data_fetch_and_check_side (KernelGlobals kg, float3 P, int index, ccl_private float3 *lightpos, ccl_private float3 *dir)
ccl_device_inline float	background_portal_pdf (KernelGlobals kg, float3 P, float3 direction, int ignore_portal, ccl_private bool *is_possible)
ccl_device int	background_num_possible_portals (KernelGlobals kg, float3 P)
ccl_device float3	background_portal_sample (KernelGlobals kg, float3 P, float2 rand, int num_possible, ccl_private int *sampled_portal, ccl_private float *pdf)
ccl_device_inline float3	background_sun_sample (KernelGlobals kg, float2 rand, ccl_private float *pdf)
ccl_device_inline float	background_sun_pdf (KernelGlobals kg, float3 D)
ccl_device_inline float3	background_light_sample (KernelGlobals kg, float3 P, float2 rand, ccl_private float *pdf)
ccl_device float	background_light_pdf (KernelGlobals kg, float3 P, float3 direction)
template<bool in_volume_segment>
ccl_device_forceinline bool	background_light_tree_parameters (const float3 centroid, const float t, ccl_private float &cos_theta_u, ccl_private float2 &distance, ccl_private float3 &point_to_centroid, ccl_private float &theta_d)

Function Documentation

background_light_pdf()

ccl_device float background_light_pdf	(	KernelGlobals	kg,
		float3	P,
		float3	direction )

Definition at line 397 of file kernel/light/background.h.

References background_map_pdf(), background_portal_pdf(), background_sun_pdf(), kernel_data, and P.

Referenced by light_sample_mis_weight_forward_background().

background_light_sample()

ccl_device_inline float3 background_light_sample	(	KernelGlobals	kg,
		float3	P,
		float2	rand,
		ccl_private float *	pdf )

Definition at line 294 of file kernel/light/background.h.

References background_map_pdf(), background_map_sample(), background_num_possible_portals(), background_portal_pdf(), background_portal_sample(), background_sun_pdf(), background_sun_sample(), D, kernel_data, NULL, P, sample_uniform_sphere(), and float2::x.

Referenced by light_sample().

background_light_tree_parameters()

template<bool in_volume_segment>

ccl_device_forceinline bool background_light_tree_parameters	(	const float3	centroid,
		const float	t,
		ccl_private float &	cos_theta_u,
		ccl_private float2 &	distance,
		ccl_private float3 &	point_to_centroid,
		ccl_private float &	theta_d )

Definition at line 441 of file kernel/light/background.h.

References FLT_MAX, and make_float2().

Referenced by light_tree_emitter_importance().

background_map_pdf()

ccl_device float background_map_pdf	(	KernelGlobals	kg,
		float3	direction )

Definition at line 97 of file kernel/light/background.h.

References clamp(), direction_to_equirectangular(), float_to_int(), kernel_data, kernel_data_fetch, M_2PI_F, M_PI_F, sin_theta(), sinf, float2::x, and float2::y.

Referenced by background_light_pdf(), and background_light_sample().

background_map_sample()

CCL_NAMESPACE_BEGIN ccl_device float3 background_map_sample	(	KernelGlobals	kg,
		float2	rand,
		ccl_private float *	pdf )

Definition at line 14 of file kernel/light/background.h.

References count, equirectangular_to_direction(), inverse_lerp(), kernel_assert, kernel_data, kernel_data_fetch, M_2PI_F, M_PI_F, max, sin_theta(), sinf, v, float2::x, and float2::y.

Referenced by background_light_sample().

background_num_possible_portals()

ccl_device int background_num_possible_portals	(	KernelGlobals	kg,
		float3	P )

Definition at line 212 of file kernel/light/background.h.

References background_portal_data_fetch_and_check_side(), kernel_data, and P.

Referenced by background_light_sample().

background_portal_data_fetch_and_check_side()

ccl_device_inline bool background_portal_data_fetch_and_check_side	(	KernelGlobals	kg,
		float3	P,
		int	index,
		ccl_private float3 *	lightpos,
		ccl_private float3 *	dir )

Definition at line 130 of file kernel/light/background.h.

References ccl_global, dot(), kernel_data, kernel_data_fetch, and P.

Referenced by background_num_possible_portals(), background_portal_pdf(), and background_portal_sample().

background_portal_pdf()

ccl_device_inline float background_portal_pdf	(	KernelGlobals	kg,
		float3	P,
		float3	direction,
		int	ignore_portal,
		ccl_private bool *	is_possible )

Definition at line 146 of file kernel/light/background.h.

References area_light_rect_sample(), background_portal_data_fetch_and_check_side(), ccl_global, fabsf, FLT_MAX, kernel_data, kernel_data_fetch, light_pdf_area_to_solid_angle(), normalize_len(), NULL, P, ray_quad_intersect(), and zero_float2().

Referenced by background_light_pdf(), and background_light_sample().

background_portal_sample()

ccl_device float3 background_portal_sample	(	KernelGlobals	kg,
		float3	P,
		float2	rand,
		int	num_possible,
		ccl_private int *	sampled_portal,
		ccl_private float *	pdf )

Definition at line 223 of file kernel/light/background.h.

References area_light_rect_sample(), background_portal_data_fetch_and_check_side(), ccl_global, D, ellipse_sample(), fabsf, int, kernel_data, kernel_data_fetch, light_pdf_area_to_solid_angle(), normalize(), normalize_len(), P, float2::y, and zero_float3().

Referenced by background_light_sample().

background_sun_pdf()

ccl_device_inline float background_sun_pdf	(	KernelGlobals	kg,
		float3	D )

Definition at line 287 of file kernel/light/background.h.

References float4_to_float3(), kernel_data, N, and pdf_uniform_cone().

Referenced by background_light_pdf(), and background_light_sample().

background_sun_sample()

ccl_device_inline float3 background_sun_sample	(	KernelGlobals	kg,
		float2	rand,
		ccl_private float *	pdf )

Definition at line 277 of file kernel/light/background.h.

References float4_to_float3(), kernel_data, N, one_minus_cos(), and sample_uniform_cone().

Referenced by background_light_sample().