sss.c File Reference

#include <math.h>
#include <string.h>
#include <stdio.h>
#include "MEM_guardedalloc.h"
#include "BLI_math.h"
#include "BLI_blenlib.h"
#include "BLI_utildefines.h"
#include "BLI_ghash.h"
#include "BLI_memarena.h"
#include "PIL_time.h"
#include "DNA_material_types.h"
#include "BKE_colortools.h"
#include "BKE_global.h"
#include "BKE_main.h"
#include "BKE_material.h"
#include "BKE_node.h"
#include "BKE_scene.h"
#include "render_types.h"
#include "rendercore.h"
#include "renderdatabase.h"
#include "shading.h"
#include "sss.h"
#include "zbuf.h"

Go to the source code of this file.

Classes
struct	ScatterSettings
struct	ScatterPoint
struct	ScatterNode
struct	ScatterTree
struct	ScatterResult
struct	SSSData
struct	SSSPoints
Defines
#define	RD_TABLE_RANGE   100.0f
#define	RD_TABLE_RANGE_2   10000.0f
#define	RD_TABLE_SIZE   10000
#define	MAX_OCTREE_NODE_POINTS   8
#define	MAX_OCTREE_DEPTH   15
#define	SUBNODE_INDEX(co, split)   ((co[0]>=split[0]) + (co[1]>=split[1])*2 + (co[2]>=split[2])*4)
Typedefs
typedef struct ScatterPoint	ScatterPoint
typedef struct ScatterNode	ScatterNode
typedef struct ScatterResult	ScatterResult
typedef struct SSSData	SSSData
typedef struct SSSPoints	SSSPoints
Functions
static float	f_Rd (float alpha_, float A, float ro)
static float	compute_reduced_albedo (ScatterSettings *ss)
static float	Rd_rsquare (ScatterSettings *ss, float rr)
static float	Rd (ScatterSettings *ss, float r)
static void	approximate_Rd_rgb (ScatterSettings **ss, float rr, float *rd)
static void	build_Rd_table (ScatterSettings *ss)
ScatterSettings *	scatter_settings_new (float refl, float radius, float ior, float reflfac, float frontweight, float backweight)
void	scatter_settings_free (ScatterSettings *ss)
static void	add_radiance (ScatterTree *tree, float *frontrad, float *backrad, float area, float backarea, float rr, ScatterResult *result)
static void	traverse_octree (ScatterTree *tree, ScatterNode *node, float *co, int self, ScatterResult *result)
static void	compute_radiance (ScatterTree *tree, float *co, float *rad)
static void	sum_leaf_radiance (ScatterTree *UNUSED(tree), ScatterNode *node)
static void	sum_branch_radiance (ScatterTree *UNUSED(tree), ScatterNode *node)
static void	sum_radiance (ScatterTree *tree, ScatterNode *node)
static void	subnode_middle (int i, float *mid, float *subsize, float *submid)
static void	create_octree_node (ScatterTree *tree, ScatterNode *node, float *mid, float *size, ScatterPoint **refpoints, int depth)
ScatterTree *	scatter_tree_new (ScatterSettings *ss[3], float scale, float error, float(*co)[3], float(*color)[3], float *area, int totpoint)
void	scatter_tree_build (ScatterTree *tree)
void	scatter_tree_sample (ScatterTree *tree, float *co, float *color)
void	scatter_tree_free (ScatterTree *tree)
static void	sss_create_tree_mat (Render *re, Material *mat)
void	sss_add_points (Render *re, float(*co)[3], float(*color)[3], float *area, int totpoint)
static void	sss_free_tree (SSSData *sss)
void	make_sss_tree (Render *re)
void	free_sss (Render *re)
int	sample_sss (Render *re, Material *mat, float *co, float *color)
int	sss_pass_done (struct Render *re, struct Material *mat)
Variables
Render	R

---

Detailed Description

Definition in file sss.c.

---

Define Documentation

#define MAX_OCTREE_DEPTH   15

Definition at line 98 of file sss.c.

Referenced by create_octree_node().

#define MAX_OCTREE_NODE_POINTS   8

Definition at line 97 of file sss.c.

Referenced by create_octree_node().

#define RD_TABLE_RANGE   100.0f

Definition at line 93 of file sss.c.

Referenced by approximate_Rd_rgb(), and build_Rd_table().

#define RD_TABLE_RANGE_2   10000.0f

Definition at line 94 of file sss.c.

Referenced by approximate_Rd_rgb(), and build_Rd_table().

#define RD_TABLE_SIZE   10000

Definition at line 95 of file sss.c.

Referenced by approximate_Rd_rgb(), and build_Rd_table().

#define SUBNODE_INDEX	(		co,
			split
	)		((co[0]>=split[0]) + (co[1]>=split[1])*2 + (co[2]>=split[2])*4)

Definition at line 349 of file sss.c.

Referenced by create_octree_node(), and traverse_octree().

---

Typedef Documentation

typedef struct ScatterNode ScatterNode

typedef struct ScatterPoint ScatterPoint

typedef struct ScatterResult ScatterResult

typedef struct SSSData SSSData

typedef struct SSSPoints SSSPoints

---

Function Documentation

static void add_radiance	(	ScatterTree *	tree,
		float *	frontrad,
		float *	backrad,
		float	area,
		float	backarea,
		float	rr,
		ScatterResult *	result
	)		[static]

Definition at line 352 of file sss.c.

References approximate_Rd_rgb(), ScatterResult::backrad, ScatterResult::backrdsum, ScatterResult::rad, ScatterResult::rdsum, and ScatterTree::ss.

Referenced by traverse_octree().

static void approximate_Rd_rgb	(	ScatterSettings **	ss,
		float	rr,
		float *	rd
	)		[static]

Definition at line 240 of file sss.c.

References Rd_rsquare(), RD_TABLE_RANGE, RD_TABLE_RANGE_2, RD_TABLE_SIZE, sqrt(), ScatterSettings::tableRd, and ScatterSettings::tableRd2.

Referenced by add_radiance().

static void build_Rd_table

(

ScatterSettings *

ss

)

[static]

Definition at line 280 of file sss.c.

References i, MEM_mallocN(), Rd(), RD_TABLE_RANGE, RD_TABLE_RANGE_2, RD_TABLE_SIZE, size(), sqrt(), ScatterSettings::tableRd, and ScatterSettings::tableRd2.

Referenced by scatter_settings_new().

static void compute_radiance	(	ScatterTree *	tree,
		float *	co,
		float *	rad
	)		[static]

Definition at line 437 of file sss.c.

References add_v3_v3v3(), ScatterResult::backrad, ScatterResult::backrdsum, ScatterSettings::backweight, ScatterSettings::color, copy_v3_v3(), credits_svn_gen::e, ScatterSettings::frontweight, MAX2, mul_v3_fl(), ScatterResult::rad, ScatterResult::rdsum, ScatterTree::root, ScatterTree::ss, and traverse_octree().

Referenced by scatter_tree_sample().

static float compute_reduced_albedo

(

ScatterSettings *

ss

)

[static]

Definition at line 177 of file sss.c.

References ScatterSettings::A, simple_enum_gen::d, credits_svn_gen::e, f_Rd(), fabsf, i, and ScatterSettings::ro.

Referenced by scatter_settings_new().

static void create_octree_node	(	ScatterTree *	tree,
		ScatterNode *	node,
		float *	mid,
		float *	size,
		ScatterPoint **	refpoints,
		int	depth
	)		[static]

Definition at line 655 of file sss.c.

References ScatterTree::arena, BLI_memarena_alloc(), ScatterNode::child, co, i, MAX_OCTREE_DEPTH, MAX_OCTREE_NODE_POINTS, NULL, ScatterNode::points, ScatterNode::split, SUBNODE_INDEX, subnode_middle(), ScatterTree::tmppoints, and ScatterNode::totpoint.

Referenced by scatter_tree_build().

static float f_Rd	(	float	alpha_,
		float	A,
		float	ro
	)		[static]

Definition at line 169 of file sss.c.

References expf, and sqrt().

Referenced by compute_reduced_albedo().

void free_sss

(

Render *

re

)

Definition at line 1016 of file sss.c.

References BLI_ghash_free(), BLI_ghashIterator_free(), BLI_ghashIterator_getValue(), BLI_ghashIterator_isDone(), BLI_ghashIterator_new(), BLI_ghashIterator_step(), NULL, sss_free_tree(), and Render::sss_hash.

Referenced by RE_Database_Free().

void make_sss_tree

(

Render *

re

)

Definition at line 993 of file sss.c.

References BLI_ghash_new(), BLI_ghashutil_ptrcmp(), BLI_ghashutil_ptrhash(), ListBase::first, Material::flag, G, Render::i, Material::id, RenderStats::infostr, MA_DIFF_SSS, MA_IS_USED, Render::main, Main::mat, ID::next, Render::sdh, sss_create_tree_mat(), Material::sss_flag, Render::sss_hash, Render::stats_draw, and ID::us.

Referenced by RE_Database_FromScene().

static float Rd	(	ScatterSettings *	ss,
		float	r
	)		[static]

Definition at line 229 of file sss.c.

References Rd_rsquare().

Referenced by build_Rd_table(), and SubsurfaceClosure::root_find_Rd().

static float Rd_rsquare	(	ScatterSettings *	ss,
		float	rr
	)		[static]

Definition at line 216 of file sss.c.

References expf, M_PI, ScatterSettings::sigma, sqrt(), ScatterSettings::zr, and ScatterSettings::zv.

Referenced by approximate_Rd_rgb(), and Rd().

int sample_sss	(	Render *	re,
		Material *	mat,
		float *	co,
		float *	color
	)

Definition at line 1032 of file sss.c.

References BLI_ghash_lookup(), scatter_tree_sample(), Render::sss_hash, and SSSData::tree.

Referenced by shade_lamp_loop().

void scatter_settings_free

(

ScatterSettings *

ss

)

Definition at line 338 of file sss.c.

References MEM_freeN(), ScatterSettings::tableRd, and ScatterSettings::tableRd2.

Referenced by sss_free_tree().

ScatterSettings* scatter_settings_new	(	float	refl,
		float	radius,
		float	ior,
		float	reflfac,
		float	frontweight,
		float	backweight
	)

Definition at line 301 of file sss.c.

References ScatterSettings::A, ScatterSettings::alpha_, ScatterSettings::backweight, build_Rd_table(), ScatterSettings::color, compute_reduced_albedo(), ScatterSettings::D, ScatterSettings::eta, ScatterSettings::Fdr, ScatterSettings::frontweight, ScatterSettings::invsigma_t_, ScatterSettings::ld, MEM_callocN(), MIN2, ScatterSettings::ro, ScatterSettings::sigma, ScatterSettings::sigma_a, ScatterSettings::sigma_s_, ScatterSettings::sigma_t_, sqrtf, ScatterSettings::zr, and ScatterSettings::zv.

Referenced by sss_create_tree_mat().

void scatter_tree_build

(

ScatterTree *

tree

)

Definition at line 778 of file sss.c.

References ScatterTree::arena, BLI_memarena_alloc(), BLI_memarena_new(), BLI_memarena_use_calloc(), create_octree_node(), ScatterTree::max, MEM_callocN(), MEM_freeN(), ScatterTree::min, NULL, ScatterTree::points, ScatterNode::points, ScatterTree::refpoints, ScatterTree::root, size(), sum_radiance(), ScatterTree::tmppoints, ScatterNode::totpoint, and ScatterTree::totpoint.

Referenced by sss_create_tree_mat().

void scatter_tree_free

(

ScatterTree *

tree

)

Definition at line 827 of file sss.c.

References ScatterTree::arena, BLI_memarena_free(), MEM_freeN(), ScatterTree::points, and ScatterTree::refpoints.

Referenced by sss_free_tree().

ScatterTree* scatter_tree_new	(	ScatterSettings *	ss[3],
		float	scale,
		float	error,
		float(*)	co[3],
		float(*)	color[3],
		float *	area,
		int	totpoint
	)

Definition at line 737 of file sss.c.

References ScatterPoint::area, ScatterPoint::back, co, MakeCursor::color, copy_v3_v3(), DO_MINMAX, error(), ScatterTree::error, fabsf, i, INIT_MINMAX, ScatterTree::max, MEM_callocN(), ScatterTree::min, mul_v3_fl(), ScatterTree::points, ScatterTree::refpoints, ScatterTree::scale, ScatterTree::ss, and ScatterTree::totpoint.

Referenced by sss_create_tree_mat().

void scatter_tree_sample	(	ScatterTree *	tree,
		float *	co,
		float *	color
	)

Definition at line 817 of file sss.c.

References compute_radiance(), copy_v3_v3(), mul_v3_fl(), and ScatterTree::scale.

Referenced by sample_sss().

void sss_add_points	(	Render *	re,
		float(*)	co[3],
		float(*)	color[3],
		float *	area,
		int	totpoint
	)

Definition at line 964 of file sss.c.

References SSSPoints::area, BLI_addtail(), BLI_lock_thread(), BLI_unlock_thread(), co, SSSPoints::co, MakeCursor::color, SSSPoints::color, LOCK_CUSTOM1, MEM_callocN(), p, Render::sss_points, and SSSPoints::totpoint.

Referenced by zbufshade_sss_tile().

static void sss_create_tree_mat	(	Render *	re,
		Material *	mat
	)		[static]

Definition at line 854 of file sss.c.

References SSSPoints::area, BLI_freelistN(), BLI_ghash_insert(), BLI_rw_mutex_lock(), BLI_rw_mutex_unlock(), SSSPoints::co, co, SSSPoints::color, ListBase::first, get_render_aosss_error(), Render::i, ListBase::last, MEM_callocN(), MEM_freeN(), MEM_mallocN(), RenderData::mode, SSSPoints::next, NULL, Render::osa, p, RenderStats::partsdone, Render::r, R_OSA, R_PREVIEWBUTS, RE_FreeRenderResult(), RE_TileProcessor(), Render::result, Render::resultmutex, scatter_settings_new(), scatter_tree_build(), scatter_tree_new(), RenderData::scemode, SSSData::ss, Material::sss_back, Material::sss_col, Material::sss_colfac, Material::sss_error, Material::sss_front, Render::sss_hash, Material::sss_ior, Render::sss_mat, Render::sss_points, Material::sss_radius, Material::sss_scale, Render::tbh, Render::test_break, THREAD_LOCK_WRITE, SSSPoints::totpoint, and SSSData::tree.

Referenced by make_sss_tree().

static void sss_free_tree

(

SSSData *

sss

)

[static]

Definition at line 982 of file sss.c.

References MEM_freeN(), scatter_settings_free(), scatter_tree_free(), SSSData::ss, and SSSData::tree.

Referenced by free_sss().

int sss_pass_done	(	struct Render *	re,
		struct Material *	mat
	)

Definition at line 1051 of file sss.c.

References BLI_ghash_lookup(), Render::flag, RenderData::mode, Render::r, R_BAKING, R_SSS, and Render::sss_hash.

Referenced by shade_lamp_loop().

static void subnode_middle	(	int	i,
		float *	mid,
		float *	subsize,
		float *	submid
	)		[static]

Definition at line 646 of file sss.c.

Referenced by create_octree_node().

static void sum_branch_radiance	(	ScatterTree *	UNUSEDtree,
		ScatterNode *	node
	)		[static]

Definition at line 550 of file sss.c.

References ScatterNode::area, ScatterNode::backarea, ScatterNode::backrad, ScatterNode::child, ScatterNode::co, credits_svn_gen::e, fabsf, i, NULL, and ScatterNode::rad.

Referenced by sum_radiance().

static void sum_leaf_radiance	(	ScatterTree *	UNUSEDtree,
		ScatterNode *	node
	)		[static]

Definition at line 476 of file sss.c.

References ScatterNode::area, ScatterPoint::area, ScatterPoint::back, ScatterNode::backarea, ScatterNode::backrad, ScatterPoint::co, ScatterNode::co, credits_svn_gen::e, fabsf, i, p, ScatterNode::points, ScatterPoint::rad, ScatterNode::rad, and ScatterNode::totpoint.

Referenced by sum_radiance().

static void sum_radiance	(	ScatterTree *	tree,
		ScatterNode *	node
	)		[static]

Definition at line 630 of file sss.c.

References ScatterNode::child, i, sum_branch_radiance(), sum_leaf_radiance(), and ScatterNode::totpoint.

Referenced by scatter_tree_build().

static void traverse_octree	(	ScatterTree *	tree,
		ScatterNode *	node,
		float *	co,
		int	self,
		ScatterResult *	result
	)		[static]

Definition at line 386 of file sss.c.

References add_radiance(), ScatterNode::area, ScatterPoint::area, ScatterPoint::back, ScatterNode::backarea, ScatterNode::backrad, ScatterNode::child, ScatterNode::co, ScatterPoint::co, dot_v3v3(), ScatterTree::error, i, NULL, p, ScatterNode::points, ScatterNode::rad, ScatterPoint::rad, ScatterNode::split, sub_v3_v3v3(), SUBNODE_INDEX, and ScatterNode::totpoint.

Referenced by compute_radiance().

---

Variable Documentation

Render R

Definition at line 127 of file pipeline.c.