mnee.h File Reference

#include "kernel/geom/motion_triangle.h"
#include "kernel/geom/shader_data.h"
#include "kernel/geom/triangle.h"
#include "kernel/light/sample.h"

Go to the source code of this file.

Classes
struct	ManifoldVertex

Macros
#define	MNEE_MAX_ITERATIONS   64
#define	MNEE_MAX_INTERSECTION_COUNT   10
#define	MNEE_SOLVER_THRESHOLD   0.001f
#define	MNEE_MINIMUM_STEP_SIZE   0.0001f
#define	MNEE_MAX_CAUSTIC_CASTERS   6
#define	MNEE_MIN_DISTANCE   0.001f
#define	MNEE_MIN_PROGRESS_DISTANCE   0.0001f
#define	MNEE_MIN_DETERMINANT   0.0001f
#define	MNEE_PROJECTION_DISTANCE_MULTIPLIER   2.f

Functions
ccl_device_inline float2	mat22_mult (const float4 a, const float2 b)
ccl_device_inline float4	mat22_mult (const float4 a, const float4 b)
ccl_device_inline float	mat22_determinant (const float4 m)
ccl_device_inline float	mat22_inverse (const float4 m, ccl_private float4 &m_inverse)
ccl_device_forceinline void	mnee_setup_manifold_vertex (KernelGlobals kg, ccl_private ManifoldVertex *vtx, ccl_private ShaderClosure *bsdf, const float eta, const float2 n_offset, const ccl_private Ray *ray, const ccl_private Intersection *isect, ccl_private ShaderData *sd_vtx)
ccl_device_forceinline bool	mnee_compute_constraint_derivatives (const int vertex_count, ccl_private ManifoldVertex *vertices, const ccl_private float3 &surface_sample_pos, const bool light_fixed_direction, const float3 light_sample)
ccl_device_forceinline bool	mnee_solve_matrix_h_to_x (const int vertex_count, ccl_private ManifoldVertex *vertices, ccl_private float2 *dx)
ccl_device_forceinline bool	mnee_newton_solver (KernelGlobals kg, const ccl_private ShaderData *sd, ccl_private ShaderData *sd_vtx, const ccl_private LightSample *ls, const bool light_fixed_direction, const int vertex_count, ccl_private ManifoldVertex *vertices)
ccl_device_forceinline float2	mnee_sample_bsdf_dh (ClosureType type, const float alpha_x, const float alpha_y, const float sample_u, const float sample_v)
ccl_device_forceinline Spectrum	mnee_eval_bsdf_contribution (KernelGlobals kg, ccl_private ShaderClosure *closure, const float3 wi, const float3 wo)
ccl_device_forceinline bool	mnee_compute_transfer_matrix (const ccl_private ShaderData *sd, const ccl_private LightSample *ls, const bool light_fixed_direction, const int vertex_count, ccl_private ManifoldVertex *vertices, ccl_private float *dx1_dxlight, ccl_private float *dh_dx)
ccl_device_forceinline bool	mnee_path_contribution (KernelGlobals kg, IntegratorState state, ccl_private ShaderData *sd, ccl_private ShaderData *sd_mnee, ccl_private LightSample *ls, const bool light_fixed_direction, const int vertex_count, ccl_private ManifoldVertex *vertices, ccl_private BsdfEval *throughput)
ccl_device_forceinline int	kernel_path_mnee_sample (KernelGlobals kg, IntegratorState state, ccl_private ShaderData *sd, ccl_private ShaderData *sd_mnee, const ccl_private RNGState *rng_state, ccl_private LightSample *ls, ccl_private BsdfEval *throughput)

Macro Definition Documentation

MNEE_MAX_CAUSTIC_CASTERS

#define MNEE_MAX_CAUSTIC_CASTERS   6

Definition at line 49 of file mnee.h.

Referenced by kernel_path_mnee_sample(), mnee_compute_transfer_matrix(), mnee_newton_solver(), and mnee_solve_matrix_h_to_x().

MNEE_MAX_INTERSECTION_COUNT

#define MNEE_MAX_INTERSECTION_COUNT   10

Definition at line 46 of file mnee.h.

Referenced by kernel_path_mnee_sample(), and mnee_newton_solver().

MNEE_MAX_ITERATIONS

#define MNEE_MAX_ITERATIONS   64

Definition at line 45 of file mnee.h.

Referenced by mnee_newton_solver().

MNEE_MIN_DETERMINANT

#define MNEE_MIN_DETERMINANT   0.0001f

Definition at line 52 of file mnee.h.

Referenced by mat22_inverse().

MNEE_MIN_DISTANCE

#define MNEE_MIN_DISTANCE   0.001f

Definition at line 50 of file mnee.h.

Referenced by mnee_compute_constraint_derivatives(), mnee_compute_transfer_matrix(), and mnee_path_contribution().

MNEE_MIN_PROGRESS_DISTANCE

#define MNEE_MIN_PROGRESS_DISTANCE   0.0001f

Definition at line 51 of file mnee.h.

Referenced by mnee_newton_solver().

MNEE_MINIMUM_STEP_SIZE

#define MNEE_MINIMUM_STEP_SIZE   0.0001f

Definition at line 48 of file mnee.h.

Referenced by mnee_newton_solver().

MNEE_PROJECTION_DISTANCE_MULTIPLIER

#define MNEE_PROJECTION_DISTANCE_MULTIPLIER   2.f

Definition at line 53 of file mnee.h.

Referenced by mnee_newton_solver().

MNEE_SOLVER_THRESHOLD

#define MNEE_SOLVER_THRESHOLD   0.001f

Definition at line 47 of file mnee.h.

Referenced by mnee_newton_solver().

Function Documentation

kernel_path_mnee_sample()

ccl_device_forceinline int kernel_path_mnee_sample	(	KernelGlobals	kg,
		IntegratorState	state,
		ccl_private ShaderData *	sd,
		ccl_private ShaderData *	sd_mnee,
		const ccl_private RNGState *	rng_state,
		ccl_private LightSample *	ls,
		ccl_private BsdfEval *	throughput )

Definition at line 948 of file mnee.h.

References ccl_device_forceinline, ccl_global, ccl_private, CLOSURE_IS_GLASS, CLOSURE_IS_REFRACTION, Ray::D, Ray::dD, differential_make_compact(), differential_zero_compact(), Ray::dP, FLT_MAX, INTEGRATOR_STATE, INTEGRATOR_STATE_WRITE, intersection_get_object_flags(), intersection_t_offset(), MicrofacetBsdf::ior, kernel_data, kernel_data_fetch, LIGHT_AREA, RaySelfPrimitives::light_object, RaySelfPrimitives::light_prim, MNEE_MAX_CAUSTIC_CASTERS, MNEE_MAX_INTERSECTION_COUNT, mnee_newton_solver(), mnee_path_contribution(), mnee_sample_bsdf_dh(), mnee_setup_manifold_vertex(), normalize_len(), Intersection::object, RaySelfPrimitives::object, Ray::P, PATH_MNEE_VALID, PATH_RAY_DIFFUSE, PATH_RAY_TRANSMIT, path_state_rng_2D(), Intersection::prim, RaySelfPrimitives::prim, PRIMITIVE_TRIANGLE, PRNG_SURFACE_BSDF, scene_intersect(), SD_BACKFACING, SD_OBJECT_CAUSTICS_CASTER, Ray::self, shader_setup_from_ray(), SHADER_SMOOTH_NORMAL, state, surface_shader_eval(), Intersection::t, Ray::time, Ray::tmax, Ray::tmin, Intersection::type, float2::x, float2::y, and zero_float2().

Referenced by integrate_surface_direct_light().

mat22_determinant()

ccl_device_inline float mat22_determinant

(

const float4

m

)

Definition at line 103 of file mnee.h.

References ccl_device_inline, float4::w, float4::x, float4::y, and float4::z.

Referenced by mat22_inverse(), and mnee_compute_transfer_matrix().

mat22_inverse()

ccl_device_inline float mat22_inverse	(	const float4	m,
		ccl_private float4 &	m_inverse )

Definition at line 109 of file mnee.h.

References ccl_device_inline, ccl_private, fabsf, make_float4, mat22_determinant(), MNEE_MIN_DETERMINANT, float4::w, float4::x, float4::y, and float4::z.

Referenced by mnee_compute_transfer_matrix(), and mnee_solve_matrix_h_to_x().

mat22_mult() [1/2]

ccl_device_inline float2 mat22_mult	(	const float4	a,
		const float2	b )

Definition at line 90 of file mnee.h.

References b, ccl_device_inline, make_float2, float4::w, float4::x, float4::y, and float4::z.

Referenced by mnee_compute_transfer_matrix(), and mnee_solve_matrix_h_to_x().

mat22_mult() [2/2]

ccl_device_inline float4 mat22_mult	(	const float4	a,
		const float4	b )

Definition at line 96 of file mnee.h.

References b, ccl_device_inline, make_float4, float4::w, float4::x, float4::y, and float4::z.

mnee_compute_constraint_derivatives()

ccl_device_forceinline bool mnee_compute_constraint_derivatives	(	const int	vertex_count,
		ccl_private ManifoldVertex *	vertices,
		const ccl_private float3 &	surface_sample_pos,
		const bool	light_fixed_direction,
		const float3	light_sample )

Definition at line 256 of file mnee.h.

References ccl_private, cross, dot(), H, len, light_sample(), make_float2, make_float4, MNEE_MIN_DISTANCE, and v.

Referenced by mnee_newton_solver().

mnee_compute_transfer_matrix()

ccl_device_forceinline bool mnee_compute_transfer_matrix	(	const ccl_private ShaderData *	sd,
		const ccl_private LightSample *	ls,
		const bool	light_fixed_direction,
		const int	vertex_count,
		ccl_private ManifoldVertex *	vertices,
		ccl_private float *	dx1_dxlight,
		ccl_private float *	dh_dx )

Definition at line 671 of file mnee.h.

References ccl_device_forceinline, ccl_private, cos_theta(), cross, dot(), fabsf, fmaxf, H, len, make_float4, make_orthonormals(), mat22_determinant(), mat22_inverse(), mat22_mult(), MNEE_MAX_CAUSTIC_CASTERS, MNEE_MIN_DISTANCE, normalize, sin_from_cos(), sin_phi(), sin_theta(), and U.

Referenced by mnee_path_contribution().

mnee_eval_bsdf_contribution()

ccl_device_forceinline Spectrum mnee_eval_bsdf_contribution	(	KernelGlobals	kg,
		ccl_private ShaderClosure *	closure,
		const float3	wi,
		const float3	wo )

Definition at line 629 of file mnee.h.

References bsdf_G(), ccl_device_forceinline, ccl_private, CLOSURE_BSDF_MICROFACET_BECKMANN_REFRACTION_ID, dot(), fabsf, G, microfacet_fresnel(), normalize, and sqr.

Referenced by mnee_path_contribution().

mnee_newton_solver()

ccl_device_forceinline bool mnee_newton_solver	(	KernelGlobals	kg,
		const ccl_private ShaderData *	sd,
		ccl_private ShaderData *	sd_vtx,
		const ccl_private LightSample *	ls,
		const bool	light_fixed_direction,
		const int	vertex_count,
		ccl_private ManifoldVertex *	vertices )

Definition at line 411 of file mnee.h.

References beta(), ccl_device_forceinline, ccl_private, Ray::D, Ray::dD, differential_make_compact(), differential_zero_compact(), distance(), dot(), Ray::dP, fmaxf, intersection_t_offset(), len, RaySelfPrimitives::light_object, RaySelfPrimitives::light_prim, light_sample(), min, mnee_compute_constraint_derivatives(), MNEE_MAX_CAUSTIC_CASTERS, MNEE_MAX_INTERSECTION_COUNT, MNEE_MAX_ITERATIONS, MNEE_MIN_PROGRESS_DISTANCE, MNEE_MINIMUM_STEP_SIZE, MNEE_PROJECTION_DISTANCE_MULTIPLIER, mnee_setup_manifold_vertex(), mnee_solve_matrix_h_to_x(), MNEE_SOLVER_THRESHOLD, normalize_len(), Intersection::object, RaySelfPrimitives::object, OBJECT_NONE, Ray::P, ManifoldVertex::p, PATH_RAY_TRANSMIT, Intersection::prim, RaySelfPrimitives::prim, PRIM_NONE, scene_intersect(), Ray::self, Intersection::t, Ray::time, Ray::tmax, Ray::tmin, float2::x, and float2::y.

Referenced by kernel_path_mnee_sample().

mnee_path_contribution()

ccl_device_forceinline bool mnee_path_contribution	(	KernelGlobals	kg,
		IntegratorState	state,
		ccl_private ShaderData *	sd,
		ccl_private ShaderData *	sd_mnee,
		ccl_private LightSample *	ls,
		const bool	light_fixed_direction,
		const int	vertex_count,
		ccl_private ManifoldVertex *	vertices,
		ccl_private BsdfEval *	throughput )

Definition at line 799 of file mnee.h.

References bsdf_eval_mul(), ccl_device_forceinline, ccl_private, Ray::D, Ray::dD, differential_make_compact(), differential_zero_compact(), dot(), Ray::dP, fabsf, flag, fminf, G, INTEGRATOR_STATE, INTEGRATOR_STATE_WRITE, kernel_data_fetch, RaySelfPrimitives::light_object, RaySelfPrimitives::light_prim, light_sample_shader_eval(), light_sample_update(), mnee_compute_transfer_matrix(), mnee_eval_bsdf_contribution(), MNEE_MIN_DISTANCE, normalize_len(), Intersection::object, RaySelfPrimitives::object, OBJECT_NONE, Ray::P, PATH_RAY_DIFFUSE, PATH_RAY_TRANSMIT, Intersection::prim, RaySelfPrimitives::prim, scene_intersect(), Ray::self, shader_setup_from_sample(), sqr, state, surface_shader_bsdf_eval(), surface_shader_eval(), Intersection::t, Ray::time, Ray::tmax, Ray::tmin, and v.

Referenced by kernel_path_mnee_sample().

mnee_sample_bsdf_dh()

ccl_device_forceinline float2 mnee_sample_bsdf_dh	(	ClosureType	type,
		const float	alpha_x,
		const float	alpha_y,
		const float	sample_u,
		const float	sample_v )

Definition at line 584 of file mnee.h.

References atanf, ccl_device_forceinline, CLOSURE_BSDF_MICROFACET_BECKMANN_REFRACTION_ID, fast_sincosf(), logf, M_2PI_F, M_PI_2_F, M_PI_F, make_float2, safe_sqrtf(), sin_phi(), sin_theta(), and tanf.

Referenced by kernel_path_mnee_sample().

mnee_setup_manifold_vertex()

ccl_device_forceinline void mnee_setup_manifold_vertex	(	KernelGlobals	kg,
		ccl_private ManifoldVertex *	vtx,
		ccl_private ShaderClosure *	bsdf,
		const float	eta,
		const float2	n_offset,
		const ccl_private Ray *	ray,
		const ccl_private Intersection *	isect,
		ccl_private ShaderData *	sd_vtx )

Definition at line 120 of file mnee.h.

References ccl_device_forceinline, ccl_private, cos_theta(), cross, dot(), kernel_data_fetch, len, make_float2, make_float4, make_orthonormals(), motion_triangle_point_from_uv(), motion_triangle_vertices_and_normals(), normalize, normalize_len(), normals, object_get_transform(), OBJECT_NONE, object_normal_transform_auto, object_position_transform_auto, PRIMITIVE_TRIANGLE, SD_OBJECT_NEGATIVE_SCALE, SD_OBJECT_TRANSFORM_APPLIED, shader_setup_object_transforms(), sin_theta(), transform_point(), triangle_vertices_and_normals(), verts, zero_float2(), and zero_float4().

Referenced by kernel_path_mnee_sample(), and mnee_newton_solver().

mnee_solve_matrix_h_to_x()

ccl_device_forceinline bool mnee_solve_matrix_h_to_x	(	const int	vertex_count,
		ccl_private ManifoldVertex *	vertices,
		ccl_private float2 *	dx )

Definition at line 376 of file mnee.h.

References A, C, ccl_device_forceinline, ccl_private, mat22_inverse(), mat22_mult(), and MNEE_MAX_CAUSTIC_CASTERS.

Referenced by mnee_newton_solver().