light.h File Reference

#include "kernel/geom/object.h"
#include "kernel/globals.h"
#include "kernel/integrator/state.h"
#include "kernel/light/area.h"
#include "kernel/light/background.h"
#include "kernel/light/distant.h"
#include "kernel/light/point.h"
#include "kernel/light/spot.h"
#include "kernel/light/triangle.h"
#include "kernel/sample/lcg.h"

Go to the source code of this file.

Functions
CCL_NAMESPACE_BEGIN ccl_device_inline bool	light_select_reached_max_bounces (KernelGlobals kg, const int index, const int bounce)
ccl_device_inline int	light_link_receiver_nee (KernelGlobals kg, const ccl_private ShaderData *sd)
ccl_device_inline int	light_link_receiver_forward (KernelGlobals kg, IntegratorState state)
ccl_device_inline bool	light_link_light_match (KernelGlobals kg, const int object_receiver, const int object_emitter)
ccl_device_inline bool	light_link_object_match (KernelGlobals kg, const int object_receiver, const int object_emitter)
template<bool in_volume_segment>
ccl_device_inline bool	light_sample (KernelGlobals kg, const int lamp, const float2 rand, const float3 P, const float3 N, const int shader_flags, const uint32_t path_flag, ccl_private LightSample *ls)
template<bool in_volume_segment>
ccl_device_noinline bool	light_sample (KernelGlobals kg, const float3 rand_light, const float time, const float3 P, const float3 N, const int object_receiver, const int shader_flags, const int bounce, const uint32_t path_flag, ccl_private LightSample *ls)
template<bool is_main_path>
ccl_device_forceinline int	lights_intersect_impl (KernelGlobals kg, const ccl_private Ray *ccl_restrict ray, ccl_private Intersection *ccl_restrict isect, const int last_prim, const int last_object, const int last_type, const uint32_t path_flag, const uint8_t path_mnee, const int receiver_forward, ccl_private uint *lcg_state, int num_hits)
ccl_device bool	lights_intersect (KernelGlobals kg, IntegratorState state, const ccl_private Ray *ccl_restrict ray, ccl_private Intersection *ccl_restrict isect, const int last_prim, const int last_object, const int last_type, const uint32_t path_flag)
ccl_device int	lights_intersect_shadow_linked (KernelGlobals kg, const ccl_private Ray *ccl_restrict ray, ccl_private Intersection *ccl_restrict isect, const int last_prim, const int last_object, const int last_type, const uint32_t path_flag, const int receiver_forward, ccl_private uint *lcg_state, const int num_hits)
ccl_device bool	light_sample_from_intersection (KernelGlobals kg, const ccl_private Intersection *ccl_restrict isect, const float3 ray_P, const float3 ray_D, const float3 N, const uint32_t path_flag, ccl_private LightSample *ccl_restrict ls)

Function Documentation

light_link_light_match()

ccl_device_inline bool light_link_light_match	(	KernelGlobals	kg,
		const int	object_receiver,
		const int	object_emitter )

Definition at line 59 of file kernel/light/light.h.

References ccl_device_inline, kernel_data, kernel_data_fetch, KERNEL_FEATURE_LIGHT_LINKING, and OBJECT_NONE.

Referenced by integrate_distant_lights(), and lights_intersect_impl().

light_link_object_match()

ccl_device_inline bool light_link_object_match	(	KernelGlobals	kg,
		const int	object_receiver,
		const int	object_emitter )

Definition at line 78 of file kernel/light/light.h.

References ccl_device_inline, kernel_data, kernel_data_fetch, KERNEL_FEATURE_LIGHT_LINKING, and OBJECT_NONE.

Referenced by integrate_surface_emission(), and light_sample().

light_link_receiver_forward()

ccl_device_inline int light_link_receiver_forward	(	KernelGlobals	kg,
		IntegratorState	state )

Definition at line 46 of file kernel/light/light.h.

References ccl_device_inline, INTEGRATOR_STATE, kernel_data, KERNEL_FEATURE_LIGHT_LINKING, OBJECT_NONE, and state.

Referenced by integrate_distant_lights(), integrate_surface_emission(), light_sample_mis_weight_forward_background(), light_sample_mis_weight_forward_lamp(), light_sample_mis_weight_forward_surface(), and lights_intersect().

light_link_receiver_nee()

ccl_device_inline int light_link_receiver_nee	(	KernelGlobals	kg,
		const ccl_private ShaderData *	sd )

Definition at line 33 of file kernel/light/light.h.

References ccl_device_inline, ccl_private, kernel_data, KERNEL_FEATURE_LIGHT_LINKING, and OBJECT_NONE.

Referenced by integrate_surface_direct_light().

light_sample() [1/2]

template<bool in_volume_segment>

ccl_device_noinline bool light_sample	(	KernelGlobals	kg,
		const float3	rand_light,
		const float	time,
		const float3	P,
		const float3	N,
		const int	object_receiver,
		const int	shader_flags,
		const int	bounce,
		const uint32_t	path_flag,
		ccl_private LightSample *	ls )

Definition at line 183 of file kernel/light/light.h.

References ccl_device_noinline, ccl_global, ccl_private, kernel_data, kernel_data_fetch, light_link_object_match(), light_sample(), light_select_reached_max_bounces(), make_float2, N, P, PATH_RAY_SHADOW_CATCHER_PASS, SD_OBJECT_SHADOW_CATCHER, triangle_light_sample(), and UNLIKELY.

light_sample() [2/2]

template<bool in_volume_segment>

ccl_device_inline bool light_sample	(	KernelGlobals	kg,
		const int	lamp,
		const float2	rand,
		const float3	P,
		const float3	N,
		const int	shader_flags,
		const uint32_t	path_flag,
		ccl_private LightSample *	ls )

Definition at line 107 of file kernel/light/light.h.

References area_light_sample(), background_light_sample(), ccl_device_inline, ccl_global, ccl_private, D, distant_light_sample(), FLT_MAX, kernel_data_fetch, LIGHT_BACKGROUND, LIGHT_DISTANT, LIGHT_POINT, LIGHT_SPOT, N, object_lightgroup(), P, PATH_RAY_SHADOW_CATCHER_PASS, point_light_sample(), SHADER_EXCLUDE_SHADOW_CATCHER, spot_light_sample(), float2::x, float2::y, and zero_float3().

Referenced by light_sample(), light_sample_from_position(), light_sample_from_volume_segment(), mnee_compute_constraint_derivatives(), and mnee_newton_solver().

light_sample_from_intersection()

ccl_device bool light_sample_from_intersection	(	KernelGlobals	kg,
		const ccl_private Intersection *ccl_restrict	isect,
		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 457 of file kernel/light/light.h.

References area_light_sample_from_intersection(), ccl_device, ccl_global, ccl_private, ccl_restrict, kernel_assert, kernel_data_fetch, LIGHT_AREA, LIGHT_POINT, LIGHT_SPOT, N, object_lightgroup(), point_light_sample_from_intersection(), and spot_light_sample_from_intersection().

Referenced by integrate_light().

light_select_reached_max_bounces()

CCL_NAMESPACE_BEGIN ccl_device_inline bool light_select_reached_max_bounces	(	KernelGlobals	kg,
		const int	index,
		const int	bounce )

Definition at line 24 of file kernel/light/light.h.

References ccl_device_inline, and kernel_data_fetch.

Referenced by light_sample().

lights_intersect()

ccl_device bool lights_intersect	(	KernelGlobals	kg,
		IntegratorState	state,
		const ccl_private Ray *ccl_restrict	ray,
		ccl_private Intersection *ccl_restrict	isect,
		const int	last_prim,
		const int	last_object,
		const int	last_type,
		const uint32_t	path_flag )

Definition at line 399 of file kernel/light/light.h.

References ccl_device, ccl_private, ccl_restrict, INTEGRATOR_STATE, light_link_receiver_forward(), lights_intersect_impl(), PRIM_NONE, and state.

Referenced by integrator_intersect_closest().

lights_intersect_impl()

template<bool is_main_path>

ccl_device_forceinline int lights_intersect_impl	(	KernelGlobals	kg,
		const ccl_private Ray *ccl_restrict	ray,
		ccl_private Intersection *ccl_restrict	isect,
		const int	last_prim,
		const int	last_object,
		const int	last_type,
		const uint32_t	path_flag,
		const uint8_t	path_mnee,
		const int	receiver_forward,
		ccl_private uint *	lcg_state,
		int	num_hits )

Definition at line 259 of file kernel/light/light.h.

References area_light_intersect(), ccl_device_forceinline, ccl_global, ccl_private, ccl_restrict, distant_light_intersect(), FLT_MAX, kernel_assert, kernel_data, kernel_data_fetch, KERNEL_FEATURE_SHADOW_LINKING, lcg_step_float(), LIGHT_AREA, LIGHT_DISTANT, light_link_light_match(), LIGHT_LINK_MASK_ALL, LIGHT_POINT, LIGHT_SPOT, PATH_MNEE_CULL_LIGHT_CONNECTION, PATH_RAY_CAMERA, PATH_RAY_SHADOW_CATCHER_PASS, point_light_intersect(), PRIM_NONE, PRIMITIVE_LAMP, SHADER_EXCLUDE_CAMERA, SHADER_EXCLUDE_SHADOW_CATCHER, SHADER_USE_MIS, spot_light_intersect(), and v.

Referenced by lights_intersect(), and lights_intersect_shadow_linked().

lights_intersect_shadow_linked()

ccl_device int lights_intersect_shadow_linked	(	KernelGlobals	kg,
		const ccl_private Ray *ccl_restrict	ray,
		ccl_private Intersection *ccl_restrict	isect,
		const int	last_prim,
		const int	last_object,
		const int	last_type,
		const uint32_t	path_flag,
		const int	receiver_forward,
		ccl_private uint *	lcg_state,
		const int	num_hits )

Definition at line 431 of file kernel/light/light.h.

References ccl_device, ccl_private, ccl_restrict, lights_intersect_impl(), and PATH_MNEE_NONE.