mapping.h File Reference

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Functions
CCL_NAMESPACE_BEGIN ccl_device float2	sample_uniform_disk (const float2 rand)
ccl_device void	make_orthonormals_tangent (const float3 N, const float3 T, ccl_private float3 *a, ccl_private float3 *b)
ccl_device void	make_orthonormals_safe_tangent (const float3 N, const float3 T, ccl_private float3 *a, ccl_private float3 *b)
ccl_device_inline void	sample_cos_hemisphere (const float3 N, float2 rand_in, ccl_private float3 *wo, ccl_private float *pdf)
ccl_device_inline float	pdf_cos_hemisphere (const float3 N, const float3 D)
ccl_device_inline void	sample_uniform_hemisphere (const float3 N, const float2 rand, ccl_private float3 *wo, ccl_private float *pdf)
ccl_device_inline float	pdf_uniform_cone (const float3 N, float3 D, float angle)
ccl_device_inline float3	sample_uniform_cone (const float3 N, const float one_minus_cos_angle, const float2 rand, ccl_private float *cos_theta, ccl_private float *pdf)
ccl_device float3	sample_uniform_sphere (const float2 rand)
ccl_device float2	regular_polygon_sample (float corners, float rotation, const float2 rand)

Function Documentation

make_orthonormals_safe_tangent()

ccl_device void make_orthonormals_safe_tangent	(	const float3	N,
		const float3	T,
		ccl_private float3 *	a,
		ccl_private float3 *	b )

Definition at line 46 of file sample/mapping.h.

References b, cross(), len_squared(), make_orthonormals(), N, and safe_normalize().

Referenced by bsdf_sheen_setup().

make_orthonormals_tangent()

ccl_device void make_orthonormals_tangent	(	const float3	N,
		const float3	T,
		ccl_private float3 *	a,
		ccl_private float3 *	b )

Definition at line 37 of file sample/mapping.h.

References b, cross(), N, and normalize().

Referenced by bsdf_ashikhmin_shirley_eval(), bsdf_ashikhmin_shirley_sample(), bsdf_microfacet_eval(), bsdf_microfacet_sample(), and compute_v().

pdf_cos_hemisphere()

ccl_device_inline float pdf_cos_hemisphere	(	const float3	N,
		const float3	D )

Definition at line 76 of file sample/mapping.h.

References cos_theta(), dot(), and N.

Referenced by sphere_light_pdf(), and spot_light_pdf().

pdf_uniform_cone()

ccl_device_inline float pdf_uniform_cone	(	const float3	N,
		float3	D,
		float	angle )

Definition at line 100 of file sample/mapping.h.

References N, one_minus_cos(), precise_angle(), and z().

Referenced by background_sun_pdf().

regular_polygon_sample()

ccl_device float2 regular_polygon_sample	(	float	corners,
		float	rotation,
		const float2	rand )

Definition at line 178 of file sample/mapping.h.

References angle(), cosf, floorf, M_PI_F, make_float2(), sinf, sqrtf, v, float2::x, and float2::y.

Referenced by camera_sample_aperture().

sample_cos_hemisphere()

ccl_device_inline void sample_cos_hemisphere	(	const float3	N,
		float2	rand_in,
		ccl_private float3 *	wo,
		ccl_private float *	pdf )

Definition at line 62 of file sample/mapping.h.

References B, len_squared(), make_orthonormals(), N, safe_sqrtf(), sample_uniform_disk(), T, float2::x, and float2::y.

Referenced by bsdf_diffuse_sample(), bsdf_oren_nayar_sample(), bsdf_translucent_sample(), point_light_sample(), and spot_light_sample().

sample_uniform_cone()

ccl_device_inline float3 sample_uniform_cone	(	const float3	N,
		const float	one_minus_cos_angle,
		const float2	rand,
		ccl_private float *	cos_theta,
		ccl_private float *	pdf )

Definition at line 114 of file sample/mapping.h.

References B, cos_theta(), len_squared(), make_orthonormals(), N, safe_sqrtf(), sample_uniform_disk(), T, and xy.

Referenced by background_sun_sample(), bsdf_diffuse_toon_sample(), bsdf_glossy_toon_sample(), distant_light_sample(), point_light_sample(), and spot_light_sample().

sample_uniform_disk()

CCL_NAMESPACE_BEGIN ccl_device float2 sample_uniform_disk

(

const float2

rand

)

Definition at line 14 of file sample/mapping.h.

References b, cosf, M_PI_2_F, make_float2(), sinf, float2::x, float2::y, and zero_float2().

Referenced by bsdf_sheen_sample(), camera_sample_aperture(), ellipse_sample(), microfacet_ggx_sample_vndf(), sample_cos_hemisphere(), sample_uniform_cone(), and sample_uniform_hemisphere().

sample_uniform_hemisphere()

ccl_device_inline void sample_uniform_hemisphere	(	const float3	N,
		const float2	rand,
		ccl_private float3 *	wo,
		ccl_private float *	pdf )

Definition at line 83 of file sample/mapping.h.

References B, len_squared(), make_orthonormals(), N, safe_sqrtf(), sample_uniform_disk(), T, xy, and z().

Referenced by bsdf_ashikhmin_velvet_sample().

sample_uniform_sphere()

ccl_device float3 sample_uniform_sphere

(

const float2

rand

)

Definition at line 166 of file sample/mapping.h.

References cosf, M_2PI_F, make_float3(), sin_from_cos(), sinf, float2::x, float2::y, and z().

Referenced by background_light_sample(), point_light_sample(), and spot_light_sample().