kernel_montecarlo.h File Reference

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Functions
CCL_NAMESPACE_BEGIN ccl_device void	to_unit_disk (float *x, float *y)
ccl_device void	make_orthonormals_tangent (const float3 N, const float3 T, float3 *a, float3 *b)
ccl_device_inline void	sample_cos_hemisphere (const float3 N, float randu, float randv, float3 *omega_in, float *pdf)
ccl_device_inline void	sample_uniform_hemisphere (const float3 N, float randu, float randv, float3 *omega_in, float *pdf)
ccl_device_inline void	sample_uniform_cone (const float3 N, float angle, float randu, float randv, float3 *omega_in, float *pdf)
ccl_device_inline float	pdf_uniform_cone (const float3 N, float3 D, float angle)
ccl_device float3	sample_uniform_sphere (float u1, float u2)
ccl_device float	balance_heuristic (float a, float b)
ccl_device float	balance_heuristic_3 (float a, float b, float c)
ccl_device float	power_heuristic (float a, float b)
ccl_device float	power_heuristic_3 (float a, float b, float c)
ccl_device float	max_heuristic (float a, float b)
ccl_device float2	concentric_sample_disk (float u1, float u2)
ccl_device float2	regular_polygon_sample (float corners, float rotation, float u, float v)
ccl_device float3	ensure_valid_reflection (float3 Ng, float3 I, float3 N)

Function Documentation

balance_heuristic()

ccl_device float balance_heuristic	(	float	a,
		float	b
	)

Definition at line 123 of file kernel_montecarlo.h.

References Freestyle::a.

balance_heuristic_3()

ccl_device float balance_heuristic_3	(	float	a,
		float	b,
		float	c
	)

Definition at line 128 of file kernel_montecarlo.h.

References Freestyle::a, and Freestyle::c.

concentric_sample_disk()

ccl_device float2 concentric_sample_disk	(	float	u1,
		float	u2
	)

Definition at line 150 of file kernel_montecarlo.h.

References Freestyle::a, cosf, M_PI_2_F, M_PI_4_F, make_float2, r, sinf, u1, u2, and zero_float2().

Referenced by camera_sample_aperture().

ensure_valid_reflection()

ccl_device float3 ensure_valid_reflection	(	float3	Ng,
		float3	I,
		float3	N
	)

Definition at line 196 of file kernel_montecarlo.h.

References Freestyle::a, Freestyle::c, dot(), I, make_float2, min, N, normalize(), R, safe_sqrtf(), sqr(), float2::x, X, and float2::y.

Referenced by svm_node_normal_map(), and svm_node_set_bump().

make_orthonormals_tangent()

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

Definition at line 50 of file kernel_montecarlo.h.

References Freestyle::a, cross(), N, normalize(), and T.

Referenced by bsdf_ashikhmin_shirley_eval_reflect(), bsdf_ashikhmin_shirley_sample(), bsdf_microfacet_beckmann_eval_reflect(), bsdf_microfacet_beckmann_sample(), bsdf_microfacet_ggx_eval_reflect(), bsdf_microfacet_ggx_sample(), bsdf_microfacet_multi_ggx_eval_reflect(), and bsdf_microfacet_multi_ggx_sample().

max_heuristic()

ccl_device float max_heuristic	(	float	a,
		float	b
	)

Definition at line 143 of file kernel_montecarlo.h.

References Freestyle::a.

pdf_uniform_cone()

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

Definition at line 101 of file kernel_montecarlo.h.

References angle(), cosf, D(), dot(), M_1_2PI_F, N, and z.

power_heuristic()

ccl_device float power_heuristic	(	float	a,
		float	b
	)

Definition at line 133 of file kernel_montecarlo.h.

References Freestyle::a.

Referenced by direct_emission(), indirect_background(), indirect_lamp_emission(), indirect_primitive_emission(), and shader_bsdf_eval().

power_heuristic_3()

ccl_device float power_heuristic_3	(	float	a,
		float	b,
		float	c
	)

Definition at line 138 of file kernel_montecarlo.h.

References Freestyle::a, and Freestyle::c.

regular_polygon_sample()

ccl_device float2 regular_polygon_sample	(	float	corners,
		float	rotation,
		float	u,
		float	v
	)

Definition at line 172 of file kernel_montecarlo.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,
		float	randu,
		float	randv,
		float3 *	omega_in,
		float *	pdf
	)

Definition at line 57 of file kernel_montecarlo.h.

References B, M_1_PI_F, make_orthonormals(), max, N, sqrtf, T, and to_unit_disk().

Referenced by bsdf_diffuse_sample(), bsdf_principled_diffuse_sample(), bsdf_principled_sheen_sample(), bsdf_translucent_sample(), kernel_path_ao(), and subsurface_random_walk().

sample_uniform_cone()

ccl_device_inline void sample_uniform_cone	(	const float3	N,
		float	angle,
		float	randu,
		float	randv,
		float3 *	omega_in,
		float *	pdf
	)

Definition at line 85 of file kernel_montecarlo.h.

References angle(), B, cosf, M_1_2PI_F, M_2PI_F, make_orthonormals(), N, r, safe_sqrtf(), sinf, sqr(), T, x, y, and z.

Referenced by bsdf_diffuse_toon_sample(), and bsdf_glossy_toon_sample().

sample_uniform_hemisphere()

ccl_device_inline void sample_uniform_hemisphere	(	const float3	N,
		float	randu,
		float	randv,
		float3 *	omega_in,
		float *	pdf
	)

Definition at line 69 of file kernel_montecarlo.h.

References B, cosf, M_1_PI_F, M_2PI_F, make_orthonormals(), max, N, r, sinf, sqrtf, T, x, y, and z.

Referenced by bsdf_ashikhmin_velvet_sample(), and bsdf_oren_nayar_sample().

sample_uniform_sphere()

ccl_device float3 sample_uniform_sphere	(	float	u1,
		float	u2
	)

Definition at line 112 of file kernel_montecarlo.h.

References cosf, fmaxf, M_2PI_F, make_float3, r, sinf, sqrtf, u1, u2, x, y, and z.

to_unit_disk()

CCL_NAMESPACE_BEGIN ccl_device void to_unit_disk	(	float *	x,
		float *	y
	)

Definition at line 39 of file kernel_montecarlo.h.

References cosf, M_2PI_F, r, sinf, sqrtf, x, and y.

Referenced by ellipse_sample(), and sample_cos_hemisphere().