kernel_light_common.h File Reference

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Functions
CCL_NAMESPACE_BEGIN ccl_device_inline float	rect_light_sample (float3 P, float3 *light_p, float3 axisu, float3 axisv, float randu, float randv, bool sample_coord)
ccl_device_inline float3	ellipse_sample (float3 ru, float3 rv, float randu, float randv)
ccl_device float3	disk_light_sample (float3 v, float randu, float randv)
ccl_device float3	distant_light_sample (float3 D, float radius, float randu, float randv)
ccl_device float3	sphere_light_sample (float3 P, float3 center, float radius, float randu, float randv)
ccl_device float	spot_light_attenuation (float3 dir, float spot_angle, float spot_smooth, float3 N)
ccl_device float	light_spread_attenuation (const float3 D, const float3 lightNg, const float tan_spread, const float normalize_spread)
ccl_device bool	light_spread_clamp_area_light (const float3 P, const float3 lightNg, float3 *lightP, float3 *axisu, float3 *axisv, const float tan_spread)
ccl_device float	lamp_light_pdf (KernelGlobals *kg, const float3 Ng, const float3 I, float t)

Function Documentation

disk_light_sample()

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

Definition at line 112 of file kernel_light_common.h.

References ellipse_sample(), make_orthonormals(), and v.

Referenced by distant_light_sample(), and sphere_light_sample().

distant_light_sample()

ccl_device float3 distant_light_sample	(	float3	D,
		float	radius,
		float	randu,
		float	randv
	)

Definition at line 121 of file kernel_light_common.h.

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

Referenced by lamp_light_sample().

ellipse_sample()

ccl_device_inline float3 ellipse_sample	(	float3	ru,
		float3	rv,
		float	randu,
		float	randv
	)

Definition at line 106 of file kernel_light_common.h.

References to_unit_disk().

Referenced by disk_light_sample(), and lamp_light_sample().

lamp_light_pdf()

ccl_device float lamp_light_pdf	(	KernelGlobals *	kg,
		const float3	Ng,
		const float3	I,
		float	t
	)

Definition at line 213 of file kernel_light_common.h.

References dot(), I, and t.

Referenced by lamp_light_eval(), and lamp_light_sample().

light_spread_attenuation()

ccl_device float light_spread_attenuation	(	const float3	D,
		const float3	lightNg,
		const float	tan_spread,
		const float	normalize_spread
	)

Definition at line 149 of file kernel_light_common.h.

References D(), dot(), max, safe_sqrtf(), and sqr().

Referenced by lamp_light_eval(), and lamp_light_sample().

light_spread_clamp_area_light()

ccl_device bool light_spread_clamp_area_light	(	const float3	P,
		const float3	lightNg,
		float3 *	lightP,
		float3 *	axisu,
		float3 *	axisv,
		const float	tan_spread
	)

Definition at line 164 of file kernel_light_common.h.

References dot(), len, max, min, normalize_len(), P(), t, and v.

Referenced by lamp_light_eval(), and lamp_light_sample().

rect_light_sample()

CCL_NAMESPACE_BEGIN ccl_device_inline float rect_light_sample	(	float3	P,
		float3 *	light_p,
		float3	axisu,
		float3	axisv,
		float	randu,
		float	randv,
		bool	sample_coord
	)

Definition at line 30 of file kernel_light_common.h.

References clamp(), cosf, cross(), KDL::diff(), dot(), M_2PI_F, make_float4, max, normalize_len(), P(), safe_acosf(), sinf, sqrt(), sqrtf, x, y, y1, and z.

Referenced by lamp_light_eval(), and lamp_light_sample().

sphere_light_sample()

ccl_device float3 sphere_light_sample	(	float3	P,
		float3	center,
		float	radius,
		float	randu,
		float	randv
	)

Definition at line 127 of file kernel_light_common.h.

References center, disk_light_sample(), normalize(), and P().

Referenced by lamp_light_sample().

spot_light_attenuation()

ccl_device float spot_light_attenuation	(	float3	dir,
		float	spot_angle,
		float	spot_smooth,
		float3	N
	)

Definition at line 132 of file kernel_light_common.h.

References dot(), N, smoothstepf(), and t.

Referenced by lamp_light_eval(), and lamp_light_sample().