kernel_light.h File Reference

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Classes
struct	LightSample
Typedefs
typedef CCL_NAMESPACE_BEGIN struct LightSample	LightSample
Functions
__device float3	disk_light_sample (float3 v, float randu, float randv)
__device float3	distant_light_sample (float3 D, float size, float randu, float randv)
__device float3	sphere_light_sample (float3 P, float3 center, float size, float randu, float randv)
__device float3	area_light_sample (float3 axisu, float3 axisv, float randu, float randv)
__device void	regular_light_sample (KernelGlobals *kg, int point, float randu, float randv, float3 P, LightSample *ls)
__device float	regular_light_pdf (KernelGlobals *kg, const float3 Ng, const float3 I, float t)
__device void	triangle_light_sample (KernelGlobals *kg, int prim, int object, float randu, float randv, LightSample *ls)
__device float	triangle_light_pdf (KernelGlobals *kg, const float3 Ng, const float3 I, float t)
__device int	light_distribution_sample (KernelGlobals *kg, float randt)
__device void	light_sample (KernelGlobals *kg, float randt, float randu, float randv, float3 P, LightSample *ls)
__device float	light_sample_pdf (KernelGlobals *kg, LightSample *ls, float3 I, float t)
__device void	light_select (KernelGlobals *kg, int index, float randu, float randv, float3 P, LightSample *ls)
__device float	light_select_pdf (KernelGlobals *kg, LightSample *ls, float3 I, float t)

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Typedef Documentation

typedef CCL_NAMESPACE_BEGIN struct LightSample LightSample

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Function Documentation

__device float3 area_light_sample	(	float3	axisu,
		float3	axisv,
		float	randu,
		float	randv
	)

Definition at line 53 of file kernel_light.h.

Referenced by regular_light_sample().

__device float3 disk_light_sample	(	float3	v,
		float	randu,
		float	randv
	)

Definition at line 33 of file kernel_light.h.

References make_orthonormals(), and to_unit_disk().

Referenced by distant_light_sample(), and sphere_light_sample().

__device float3 distant_light_sample	(	float3	D,
		float	size,
		float	randu,
		float	randv
	)

Definition at line 43 of file kernel_light.h.

References disk_light_sample(), and normalize().

Referenced by regular_light_sample().

__device int light_distribution_sample	(	KernelGlobals *	kg,
		float	randt
	)

Definition at line 165 of file kernel_light.h.

References kernel_assert, kernel_data, kernel_tex_fetch, len(), and max.

Referenced by light_sample().

__device void light_sample	(	KernelGlobals *	kg,
		float	randt,
		float	randu,
		float	randv,
		float3	P,
		LightSample *	ls
	)

Definition at line 195 of file kernel_light.h.

References __float_as_int(), LightSample::D, FLT_MAX, kernel_tex_fetch, light_distribution_sample(), normalize_len(), LightSample::P, regular_light_sample(), LightSample::t, triangle_light_sample(), float4::w, and float4::y.

Referenced by direct_emission().

__device float light_sample_pdf	(	KernelGlobals *	kg,
		LightSample *	ls,
		float3	I,
		float	t
	)

Definition at line 218 of file kernel_light.h.

References LightSample::Ng, LightSample::prim, regular_light_pdf(), and triangle_light_pdf().

Referenced by direct_emission().

__device void light_select	(	KernelGlobals *	kg,
		int	index,
		float	randu,
		float	randv,
		float3	P,
		LightSample *	ls
	)

Definition at line 230 of file kernel_light.h.

References regular_light_sample().

Referenced by direct_emission().

__device float light_select_pdf	(	KernelGlobals *	kg,
		LightSample *	ls,
		float3	I,
		float	t
	)

Definition at line 235 of file kernel_light.h.

References LightSample::Ng, and regular_light_pdf().

__device float regular_light_pdf	(	KernelGlobals *	kg,
		const float3	Ng,
		const float3	I,
		float	t
	)

Definition at line 115 of file kernel_light.h.

References dot(), FLT_MAX, and kernel_data.

Referenced by light_sample_pdf(), and light_select_pdf().

__device void regular_light_sample	(	KernelGlobals *	kg,
		int	point,
		float	randu,
		float	randv,
		float3	P,
		LightSample *	ls
	)

Definition at line 61 of file kernel_light.h.

References __float_as_int(), area_light_sample(), LightSample::D, D(), distant_light_sample(), FLT_MAX, kernel_tex_fetch, LIGHT_DISTANT, LIGHT_POINT, LIGHT_SIZE, make_float3(), LightSample::Ng, normalize(), LightSample::object, LightSample::P, LightSample::prim, LightSample::shader, size(), sphere_light_sample(), LightSample::t, float4::w, float4::x, float4::y, and float4::z.

Referenced by light_sample(), and light_select().

__device float3 sphere_light_sample	(	float3	P,
		float3	center,
		float	size,
		float	randu,
		float	randv
	)

Definition at line 48 of file kernel_light.h.

References disk_light_sample(), normalize(), and size().

Referenced by regular_light_sample().

__device float triangle_light_pdf	(	KernelGlobals *	kg,
		const float3	Ng,
		const float3	I,
		float	t
	)

Definition at line 152 of file kernel_light.h.

References dot(), fabsf, and kernel_data.

Referenced by indirect_emission(), and light_sample_pdf().

__device void triangle_light_sample	(	KernelGlobals *	kg,
		int	prim,
		int	object,
		float	randu,
		float	randv,
		LightSample *	ls
	)

Definition at line 133 of file kernel_light.h.

References LightSample::Ng, LightSample::object, object_normal_transform(), object_position_transform(), LightSample::P, LightSample::prim, LightSample::shader, LightSample::t, triangle_normal_MT(), and triangle_sample_MT().

Referenced by light_sample().