strand.c File Reference

#include <math.h>
#include <string.h>
#include <stdlib.h>
#include "MEM_guardedalloc.h"
#include "DNA_key_types.h"
#include "DNA_material_types.h"
#include "DNA_meshdata_types.h"
#include "BLI_math.h"
#include "BLI_blenlib.h"
#include "BLI_utildefines.h"
#include "BLI_ghash.h"
#include "BLI_memarena.h"
#include "BLI_rand.h"
#include "BKE_DerivedMesh.h"
#include "BKE_key.h"
#include "render_types.h"
#include "initrender.h"
#include "rendercore.h"
#include "renderdatabase.h"
#include "renderpipeline.h"
#include "pixelblending.h"
#include "shading.h"
#include "strand.h"
#include "zbuf.h"

Go to the source code of this file.

Classes
struct	StrandShadeCache
struct	StrandPart
struct	StrandSortSegment
Defines
#define	MAX_ZROW   2000
#define	CHECK_ADD(n)
#define	CHECK_ASSIGN(n)
Typedefs
typedef struct StrandPart	StrandPart
typedef struct StrandSortSegment	StrandSortSegment
Functions
void	hoco_to_zco (ZSpan *zspan, float *zco, float *hoco)
void	zspan_scanconvert_strand (ZSpan *zspan, void *handle, float *v1, float *v2, float *v3, void(*func)(void *, int, int, float, float, float))
void	zbufsinglewire (ZSpan *zspan, int obi, int zvlnr, float *ho1, float *ho2)
static float	strand_eval_width (Material *ma, float strandco)
void	strand_eval_point (StrandSegment *sseg, StrandPoint *spoint)
static void	interpolate_vec1 (float *v1, float *v2, float t, float negt, float *v)
static void	interpolate_vec3 (float *v1, float *v2, float t, float negt, float *v)
static void	interpolate_vec4 (float *v1, float *v2, float t, float negt, float *v)
static void	interpolate_shade_result (ShadeResult *shr1, ShadeResult *shr2, float t, ShadeResult *shr, int addpassflag)
static void	strand_apply_shaderesult_alpha (ShadeResult *shr, float alpha)
static void	strand_shade_point (Render *re, ShadeSample *ssamp, StrandSegment *sseg, StrandVert *svert, StrandPoint *spoint)
StrandShadeCache *	strand_shade_cache_create (void)
void	strand_shade_cache_free (StrandShadeCache *cache)
static void	strand_shade_get (Render *re, StrandShadeCache *cache, ShadeSample *ssamp, StrandSegment *sseg, StrandVert *svert)
void	strand_shade_segment (Render *re, StrandShadeCache *cache, StrandSegment *sseg, ShadeSample *ssamp, float t, float s, int addpassflag)
void	strand_shade_unref (StrandShadeCache *cache, StrandVert *svert)
static void	strand_shade_refcount (StrandShadeCache *cache, StrandVert *svert)
static int	compare_strand_segment (const void *poin1, const void *poin2)
static void	do_strand_point_project (float winmat[][4], ZSpan *zspan, float *co, float *hoco, float *zco)
static void	strand_project_point (float winmat[][4], float winx, float winy, StrandPoint *spoint)
static APixstrand *	addpsmainAstrand (ListBase *lb)
static APixstrand *	addpsAstrand (ZSpan *zspan)
static void	do_strand_fillac (void *handle, int x, int y, float u, float v, float z)
static int	strand_test_clip (float winmat[][4], ZSpan *UNUSED(zspan), float *bounds, float *co, float *zcomp, float widthx, float widthy)
static void	do_scanconvert_strand (Render *UNUSED(re), StrandPart *spart, ZSpan *zspan, float t, float dt, float *co1, float *co2, float *co3, float *co4, int sample)
static void	strand_render (Render *re, StrandSegment *sseg, float winmat[][4], StrandPart *spart, ZSpan *zspan, int totzspan, StrandPoint *p1, StrandPoint *p2)
static int	strand_segment_recursive (Render *re, float winmat[][4], StrandPart *spart, ZSpan *zspan, int totzspan, StrandSegment *sseg, StrandPoint *p1, StrandPoint *p2, int depth)
void	render_strand_segment (Render *re, float winmat[][4], StrandPart *spart, ZSpan *zspan, int totzspan, StrandSegment *sseg)
int	zbuffer_strands_abuf (Render *re, RenderPart *pa, APixstrand *apixbuf, ListBase *apsmbase, unsigned int lay, int UNUSED(negzmask), float winmat[][4], int winx, int winy, int UNUSED(sample), float(*jit)[2], float clipcrop, int shadow, StrandShadeCache *cache)
StrandSurface *	cache_strand_surface (Render *re, ObjectRen *obr, DerivedMesh *dm, float mat[][4], int timeoffset)
void	free_strand_surface (Render *re)
void	strand_minmax (StrandRen *strand, float *min, float *max, float width)

---

Detailed Description

Definition in file strand.c.

---

Define Documentation

#define CHECK_ADD

(

n

)

Value:

if(apn->p[n]==strnr && apn->obi[n]==obi && apn->seg[n]==seg) \
    { if(!(apn->mask[n] & mask)) { apn->mask[n] |= mask; apn->v[n] += t; apn->u[n] += s; } break; }

Referenced by do_strand_fillac().

#define CHECK_ASSIGN

(

n

)

Value:

if(apn->p[n]==0) \
    {apn->obi[n]= obi; apn->p[n]= strnr; apn->z[n]= zverg; apn->mask[n]= mask; apn->v[n]= t; apn->u[n]= s; apn->seg[n]= seg; break; }

Referenced by do_strand_fillac().

#define MAX_ZROW   2000

Definition at line 507 of file strand.c.

Referenced by do_strand_fillac().

---

Typedef Documentation

typedef struct StrandPart StrandPart

typedef struct StrandSortSegment StrandSortSegment

---

Function Documentation

static APixstrand* addpsAstrand

(

ZSpan *

zspan

)

[static]

Definition at line 493 of file strand.c.

References addpsmainAstrand(), ZSpan::apsmbase, ZSpan::apstrandmcounter, and ZSpan::curpstrand.

Referenced by do_strand_fillac().

static APixstrand* addpsmainAstrand

(

ListBase *

lb

)

[static]

Definition at line 482 of file strand.c.

References BLI_addtail(), MEM_callocN(), MEM_mallocN(), and APixstrMain::ps.

Referenced by addpsAstrand().

StrandSurface* cache_strand_surface	(	Render *	re,
		ObjectRen *	obr,
		DerivedMesh *	dm,
		float	mat[][4],
		int	timeoffset
	)		[read]

Definition at line 968 of file strand.c.

References StrandSurface::ao, BLI_addtail(), MVert::co, StrandSurface::co, co, copy_v3_v3(), StrandSurface::env, StrandSurface::face, ListBase::first, DerivedMesh::getFaceArray, DerivedMesh::getNumFaces, DerivedMesh::getNumVerts, DerivedMesh::getVertArray, ObjectRen::index, StrandSurface::indirect, MEM_callocN(), mul_m4_v3(), StrandSurface::next, StrandSurface::nextco, ObjectRen::ob, StrandSurface::obr, ObjectRen::par, StrandSurface::prevco, Render::strandsurface, StrandSurface::totface, StrandSurface::totvert, MFace::v1, MFace::v2, MFace::v3, and MFace::v4.

Referenced by render_new_particle_system().

static int compare_strand_segment	(	const void *	poin1,
		const void *	poin2
	)		[static]

Definition at line 452 of file strand.c.

References StrandSortSegment::z.

Referenced by zbuffer_strands_abuf().

static void do_scanconvert_strand	(	Render *	UNUSEDre,
		StrandPart *	spart,
		ZSpan *	zspan,
		float	t,
		float	dt,
		float *	co1,
		float *	co2,
		float *	co3,
		float *	co4,
		int	sample
	)		[static]

Definition at line 613 of file strand.c.

References copy_v3_v3(), do_strand_fillac(), StrandPart::jit, StrandPart::s, StrandPart::sample, StrandPart::t, and zspan_scanconvert_strand().

Referenced by strand_render().

static void do_strand_fillac	(	void *	handle,
		int	x,
		int	y,
		float	u,
		float	v,
		float	z
	)		[static]

Definition at line 509 of file strand.c.

References addpsAstrand(), StrandPart::apixbuf, StrandPart::cache, CHECK_ADD, CHECK_ASSIGN, fabs(), StrandRen::index, PixStr::mask, PixStr::maskz, MAX_ZROW, APixstrand::next, PixStr::next, StrandSortSegment::obi, StrandSegment::obi, Render::objectinstance, StrandPart::re, StrandPart::rectdaps, StrandPart::rectmask, StrandPart::rectx, StrandPart::rectz, StrandPart::s, StrandPart::sample, StrandPart::segment, StrandSegment::strand, strand_shade_refcount(), SWAP, StrandPart::t, StrandPart::totapixbuf, StrandSegment::v, StrandRen::vert, PixStr::z, and StrandPart::zspan.

Referenced by do_scanconvert_strand().

static void do_strand_point_project	(	float	winmat[][4],
		ZSpan *	zspan,
		float *	co,
		float *	hoco,
		float *	zco
	)		[static]

Definition at line 465 of file strand.c.

References hoco_to_zco(), and projectvert().

Referenced by render_strand_segment(), and strand_segment_recursive().

void free_strand_surface

(

Render *

re

)

Definition at line 1022 of file strand.c.

References StrandSurface::ao, BLI_freelistN(), StrandSurface::co, StrandSurface::env, StrandSurface::face, ListBase::first, StrandSurface::indirect, MEM_freeN(), StrandSurface::next, StrandSurface::nextco, StrandSurface::prevco, and Render::strandsurface.

Referenced by RE_Database_Free().

void hoco_to_zco	(	ZSpan *	zspan,
		float *	zco,
		float *	hoco
	)

Referenced by do_strand_point_project(), zbufclip(), zbufclip4(), zbufclipwire(), and zbufsinglewire().

static void interpolate_shade_result	(	ShadeResult *	shr1,
		ShadeResult *	shr2,
		float	t,
		ShadeResult *	shr,
		int	addpassflag
	)		[static]

Definition at line 208 of file strand.c.

References ShadeResult::ao, ShadeResult::col, ShadeResult::combined, ShadeResult::diff, ShadeResult::emit, ShadeResult::env, ShadeResult::indirect, interpolate_vec1(), interpolate_vec3(), interpolate_vec4(), ShadeResult::mist, ShadeResult::nor, normalize_v3(), ShadeResult::refl, ShadeResult::refr, SCE_PASS_AO, SCE_PASS_DIFFUSE, SCE_PASS_EMIT, SCE_PASS_ENVIRONMENT, SCE_PASS_INDIRECT, SCE_PASS_MIST, SCE_PASS_NORMAL, SCE_PASS_REFLECT, SCE_PASS_REFRACT, SCE_PASS_RGBA, SCE_PASS_SHADOW, SCE_PASS_SPEC, SCE_PASS_VECTOR, SCE_PASS_Z, ShadeResult::shad, ShadeResult::spec, ShadeResult::winspeed, and ShadeResult::z.

Referenced by strand_shade_segment().

static void interpolate_vec1	(	float *	v1,
		float *	v2,
		float	t,
		float	negt,
		float *	v
	)		[static]

Definition at line 188 of file strand.c.

Referenced by interpolate_shade_result().

static void interpolate_vec3	(	float *	v1,
		float *	v2,
		float	t,
		float	negt,
		float *	v
	)		[static]

Definition at line 193 of file strand.c.

Referenced by interpolate_shade_result().

static void interpolate_vec4	(	float *	v1,
		float *	v2,
		float	t,
		float	negt,
		float *	v
	)		[static]

Definition at line 200 of file strand.c.

Referenced by interpolate_shade_result().

void render_strand_segment	(	Render *	re,
		float	winmat[][4],
		StrandPart *	spart,
		ZSpan *	zspan,
		int	totzspan,
		StrandSegment *	sseg
	)

Definition at line 738 of file strand.c.

References StrandSegment::buffer, StrandPoint::clip1, StrandPoint::clip2, StrandPoint::co1, StrandPoint::co2, do_strand_point_project(), StrandPoint::hoco1, StrandPoint::hoco2, StrandSegment::point1, StrandSegment::point2, projectvert(), strand_eval_point(), strand_project_point(), strand_render(), strand_segment_recursive(), StrandPoint::t, testclip(), StrandBuffer::winmat, StrandBuffer::winx, StrandBuffer::winy, StrandPoint::zco1, and StrandPoint::zco2.

Referenced by zbuffer_shadow(), and zbuffer_strands_abuf().

static void strand_apply_shaderesult_alpha	(	ShadeResult *	shr,
		float	alpha
	)		[static]

Definition at line 250 of file strand.c.

References ShadeResult::alpha, ShadeResult::col, and ShadeResult::combined.

Referenced by strand_shade_point(), and strand_shade_segment().

void strand_eval_point	(	StrandSegment *	sseg,
		StrandPoint *	spoint
	)

Definition at line 88 of file strand.c.

References add_v3_v3v3(), StrandPoint::alpha, StrandSegment::buffer, StrandPoint::co, StrandVert::co, StrandPoint::co1, StrandPoint::co2, copy_v3_v3(), cross(), cross_v3_v3v3(), data, StrandPoint::dsco, StrandPoint::dtco, StrandPoint::dtstrandco, ObjectInstanceRen::flag, StrandBuffer::flag, KEY_BSPLINE, KEY_CARDINAL, key_curve_position_weights(), key_curve_tangent_weights(), len_v3(), StrandBuffer::ma, ObjectInstanceRen::mat, StrandBuffer::minwidth, mul_m4_v3(), mul_v3_fl(), negate_v3(), StrandPoint::nor, normalize_v3_v3(), StrandSegment::obi, StrandBuffer::obr, p, R_STRAND_B_UNITS, R_STRAND_BSPLINE, R_TRANSFORMED, RE_strandren_get_simplify(), sqrt(), StrandSegment::strand, strand_eval_width(), StrandVert::strandco, StrandPoint::strandco, sub_v3_v3v3(), StrandPoint::t, StrandPoint::tan, StrandSegment::v, simple_enum_gen::w, StrandPoint::width, StrandBuffer::winmat, StrandBuffer::winx, and StrandBuffer::winy.

Referenced by render_strand_segment(), strand_segment_recursive(), and strand_shade_get().

static float strand_eval_width	(	Material *	ma,
		float	strandco
	)		[static]

Definition at line 71 of file strand.c.

References pow(), Material::strand_ease, Material::strand_end, and Material::strand_sta.

Referenced by strand_eval_point().

void strand_minmax	(	StrandRen *	strand,
		float *	min,
		float *	max,
		float	width
	)

Definition at line 1039 of file strand.c.

References StrandVert::co, copy_v3_v3(), DO_MINMAX, and StrandRen::vert.

Referenced by finalize_render_object().

static void strand_project_point	(	float	winmat[][4],
		float	winx,
		float	winy,
		StrandPoint *	spoint
	)		[static]

Definition at line 471 of file strand.c.

References StrandPoint::co, div, StrandPoint::hoco, projectvert(), StrandPoint::x, and StrandPoint::y.

Referenced by render_strand_segment(), and strand_segment_recursive().

static void strand_render	(	Render *	re,
		StrandSegment *	sseg,
		float	winmat[][4],
		StrandPart *	spart,
		ZSpan *	zspan,
		int	totzspan,
		StrandPoint *	p1,
		StrandPoint *	p2
	)		[static]

Definition at line 652 of file strand.c.

References StrandPoint::clip1, StrandPoint::clip2, StrandPoint::co, do_scanconvert_strand(), StrandPoint::hoco1, StrandPoint::hoco2, StrandRen::index, StrandSortSegment::obi, StrandSegment::obi, Render::objectinstance, Render::osa, projectvert(), StrandSegment::strand, StrandPoint::t, zbufclip4(), zbufsinglewire(), StrandPoint::zco1, and StrandPoint::zco2.

Referenced by render_strand_segment(), and strand_segment_recursive().

static int strand_segment_recursive	(	Render *	re,
		float	winmat[][4],
		StrandPart *	spart,
		ZSpan *	zspan,
		int	totzspan,
		StrandSegment *	sseg,
		StrandPoint *	p1,
		StrandPoint *	p2,
		int	depth
	)		[static]

Definition at line 689 of file strand.c.

References StrandSegment::buffer, StrandPoint::clip1, StrandPoint::clip2, StrandPoint::co1, StrandPoint::co2, do_strand_point_project(), dot(), StrandPoint::hoco1, StrandPoint::hoco2, StrandBuffer::maxdepth, p, projectvert(), StrandSegment::sqadaptcos, strand_eval_point(), strand_project_point(), strand_render(), StrandPoint::t, testclip(), StrandBuffer::winmat, StrandBuffer::winx, StrandBuffer::winy, StrandPoint::x, StrandPoint::y, StrandPoint::zco1, and StrandPoint::zco2.

Referenced by render_strand_segment().

StrandShadeCache* strand_shade_cache_create

(

void

)

[read]

Definition at line 326 of file strand.c.

References BLI_ghash_new(), BLI_ghashutil_ptrcmp(), BLI_ghashutil_ptrhash(), BLI_memarena_new(), BLI_MEMARENA_STD_BUFSIZE, MEM_callocN(), StrandShadeCache::memarena, StrandShadeCache::refcounthash, and StrandShadeCache::resulthash.

Referenced by zbuffer_transp_shade().

void strand_shade_cache_free

(

StrandShadeCache *

cache

)

Definition at line 338 of file strand.c.

References BLI_ghash_free(), BLI_memarena_free(), MEM_freeN(), StrandShadeCache::memarena, NULL, StrandShadeCache::refcounthash, and StrandShadeCache::resulthash.

Referenced by zbuffer_transp_shade().

static void strand_shade_get	(	Render *	re,
		StrandShadeCache *	cache,
		ShadeSample *	ssamp,
		StrandSegment *	sseg,
		StrandVert *	svert
	)		[static]

Definition at line 346 of file strand.c.

References BLI_ghash_insert(), BLI_ghash_lookup(), BLI_ghash_remove(), MEM_callocN(), MEM_freeN(), NULL, p, StrandShadeCache::refcounthash, StrandShadeCache::resulthash, ShadeSample::shr, strand_eval_point(), strand_shade_point(), StrandPoint::t, and StrandSegment::v.

Referenced by strand_shade_segment().

static void strand_shade_point	(	Render *	re,
		ShadeSample *	ssamp,
		StrandSegment *	sseg,
		StrandVert *	svert,
		StrandPoint *	spoint
	)		[static]

Definition at line 267 of file strand.c.

References StrandPoint::alpha, BLI_thread_srandom(), StrandSegment::buffer, ShadeResult::combined, Render::flag, VlakRen::flag, StrandRen::index, ShadeInput::layflag, StrandBuffer::ma, MA_TANGENT_STR, ShadeInput::mask, Material::mode, NULL, StrandSegment::obi, ShadeInput::obi, ObjectInstanceRen::obr, ShadeInput::obr, R_LAMPHALO, R_SMOOTH, R_TANGENT, renderspothalo(), ShadeInput::samplenr, SCE_LAY_HALO, shade_input_do_shade(), shade_input_init_material(), shade_input_set_strand(), shade_input_set_strand_texco(), shade_samples_do_AO(), Render::shadowsamplenr, ShadeSample::shi, ShadeSample::shr, StrandSegment::strand, ShadeInput::strand, strand_apply_shaderesult_alpha(), ShadeInput::thread, StrandSegment::v, ShadeInput::v1, ShadeInput::v2, ShadeInput::v3, StrandRen::vert, and ShadeInput::vlr.

Referenced by strand_shade_get().

static void strand_shade_refcount	(	StrandShadeCache *	cache,
		StrandVert *	svert
	)		[static]

Definition at line 411 of file strand.c.

References BLI_ghash_insert(), BLI_ghash_lookup(), BLI_memarena_alloc(), StrandShadeCache::memarena, and StrandShadeCache::refcounthash.

Referenced by do_strand_fillac().

void strand_shade_segment	(	Render *	re,
		StrandShadeCache *	cache,
		StrandSegment *	sseg,
		ShadeSample *	ssamp,
		float	t,
		float	s,
		int	addpassflag
	)

Definition at line 377 of file strand.c.

References StrandSegment::buffer, fabs(), interpolate_shade_result(), pow(), ShadeSample::shr, strand_apply_shaderesult_alpha(), strand_shade_get(), StrandSegment::v, and StrandBuffer::widthfade.

Referenced by shade_strand_samples().

void strand_shade_unref	(	StrandShadeCache *	cache,
		StrandVert *	svert
	)

Definition at line 397 of file strand.c.

References BLI_ghash_lookup(), BLI_ghash_remove(), MEM_freeN(), NULL, StrandShadeCache::refcounthash, and StrandShadeCache::resulthash.

Referenced by unref_strand_samples().

static int strand_test_clip	(	float	winmat[][4],
		ZSpan *	UNUSEDzspan,
		float *	bounds,
		float *	co,
		float *	zcomp,
		float	widthx,
		float	widthy
	)		[static]

Definition at line 592 of file strand.c.

References projectvert(), and testclip().

Referenced by zbuffer_strands_abuf().

int zbuffer_strands_abuf	(	Render *	re,
		RenderPart *	pa,
		APixstrand *	apixbuf,
		ListBase *	apsmbase,
		unsigned int	lay,
		int	UNUSEDnegzmask,
		float	winmat[][4],
		int	winx,
		int	winy,
		int	UNUSEDsample,
		float(*)	jit[2],
		float	clipcrop,
		int	shadow,
		StrandShadeCache *	cache
	)

Definition at line 776 of file strand.c.

References StrandBuffer::adaptcos, StrandPart::apixbuf, ZSpan::apsmbase, BLI_memarena_alloc(), BLI_memarena_free(), BLI_memarena_new(), BLI_MEMARENA_STD_BUFSIZE, StrandBuffer::bound, StrandBound::boundbox, ObjectRen::boundbox, bounds(), StrandRen::buffer, StrandSegment::buffer, StrandPart::cache, clip_render_object(), co, StrandVert::co, compare_strand_segment(), copy_m4_m4(), RenderPart::disprect, ListBase::first, ObjectInstanceRen::flag, i, StrandRen::index, Render::instancetable, jit, StrandPart::jit, StrandBuffer::lay, StrandBuffer::ma, MA_ONLYCAST, MA_SHADBUF, ObjectInstanceRen::mat, StrandBuffer::maxwidth, MEM_callocN(), MEM_freeN(), MEM_mallocN(), Material::mode, mult_m4_m4m4(), StrandSortSegment::next, ObjectInstanceRen::next, NULL, StrandSegment::obi, StrandSortSegment::obi, Render::objectinstance, ObjectInstanceRen::obr, R_TRANSFORMED, StrandPart::re, RE_findOrAddStrand(), RenderPart::rectdaps, StrandPart::rectdaps, RenderPart::rectmask, StrandPart::rectmask, RenderPart::rectx, StrandPart::rectx, RenderPart::recty, StrandPart::recty, RenderPart::rectz, StrandPart::rectz, render_strand_segment(), StrandPart::segment, StrandSegment::shaded, StrandPart::shadow, StrandSegment::sqadaptcos, StrandBound::start, StrandSegment::strand, StrandSortSegment::strand, strand_test_clip(), ObjectRen::strandbuf, Render::tbh, Render::test_break, StrandPart::totapixbuf, StrandBuffer::totbound, Render::totstrand, StrandRen::totvert, StrandSegment::v, StrandRen::vert, rcti::xmax, rcti::xmin, rcti::ymax, rcti::ymin, StrandSortSegment::z, zbuf_alloc_span(), zbuf_free_span(), ZSpan::zmulx, ZSpan::zmuly, ZSpan::zofsx, ZSpan::zofsy, and StrandPart::zspan.

void zbufsinglewire	(	ZSpan *	zspan,
		int	obi,
		int	zvlnr,
		float *	ho1,
		float *	ho2
	)

Referenced by strand_render().

void zspan_scanconvert_strand	(	ZSpan *	zspan,
		void *	handle,
		float *	v1,
		float *	v2,
		float *	v3,
		void(*)(void *, int, int, float, float, float)	func
	)

Definition at line 1403 of file zbuf.c.

References ZSpan::maxp2, ZSpan::maxy1, ZSpan::maxy2, ZSpan::minp2, ZSpan::miny1, ZSpan::miny2, NULL, Render::rectx, ZSpan::rectx, ZSpan::span1, ZSpan::span2, zbuf_add_to_span(), and zbuf_init_span().

Referenced by do_scanconvert_strand().