152 lines
6.1 KiB
C++
152 lines
6.1 KiB
C++
/*
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
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* All rights reserved.
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*
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* Full recode: 2004-2006 Blender Foundation
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*
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* Contributor(s): none yet.
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*
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* ***** END GPL/BL DUAL LICENSE BLOCK *****
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*/
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/** \file blender/render/intern/include/zbuf.h
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* \ingroup render
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*/
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#ifndef __ZBUF_H__
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#define __ZBUF_H__
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struct RenderPart;
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struct RenderLayer;
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struct LampRen;
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struct ListBase;
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struct ZSpan;
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struct APixstrand;
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struct APixstr;
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struct StrandShadeCache;
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void fillrect(int *rect, int x, int y, int val);
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/**
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* Converts a world coordinate into a homogeneous coordinate in view
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* coordinates.
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*/
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void projectvert(const float v1[3], float winmat[4][4], float adr[4]);
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void projectverto(const float v1[3], float winmat[4][4], float adr[4]);
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int testclip(const float v[3]);
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void zbuffer_shadow(struct Render *re, float winmat[4][4], struct LampRen *lar, int *rectz, int size, float jitx, float jity);
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void zbuffer_abuf_shadow(struct Render *re, struct LampRen *lar, float winmat[4][4], struct APixstr *APixbuf, struct APixstrand *apixbuf, struct ListBase *apsmbase, int size, int samples, float (*jit)[2]);
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void zbuffer_solid(struct RenderPart *pa, struct RenderLayer *rl, void (*fillfunc)(struct RenderPart *, struct ZSpan *, int, void *), void *data);
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unsigned short *zbuffer_transp_shade(struct RenderPart *pa, struct RenderLayer *rl, float *pass, struct ListBase *psmlist);
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void zbuffer_sss(RenderPart *pa, unsigned int lay, void *handle, void (*func)(void *, int, int, int, int, int));
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int zbuffer_strands_abuf(struct Render *re, struct RenderPart *pa, struct APixstrand *apixbuf, struct ListBase *apsmbase, unsigned int lay, int negzmask, float winmat[4][4], int winx, int winy, int sample, float (*jit)[2], float clipcrop, int shadow, struct StrandShadeCache *cache);
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typedef struct APixstr {
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unsigned short mask[4]; /* jitter mask */
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int z[4]; /* distance */
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int p[4]; /* index */
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int obi[4]; /* object instance */
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short shadfac[4]; /* optimize storage for irregular shadow */
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struct APixstr *next;
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} APixstr;
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typedef struct APixstrand {
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unsigned short mask[4]; /* jitter mask */
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int z[4]; /* distance */
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int p[4]; /* index */
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int obi[4]; /* object instance */
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int seg[4]; /* for strands, segment number */
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float u[4], v[4]; /* for strands, u,v coordinate in segment */
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struct APixstrand *next;
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} APixstrand;
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typedef struct APixstrMain {
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struct APixstrMain *next, *prev;
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void *ps;
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} APixstrMain;
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/* span fill in method, is also used to localize data for zbuffering */
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typedef struct ZSpan {
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int rectx, recty; /* range for clipping */
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int miny1, maxy1, miny2, maxy2; /* actual filled in range */
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const float *minp1, *maxp1, *minp2, *maxp2; /* vertex pointers detect min/max range in */
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float *span1, *span2;
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float zmulx, zmuly, zofsx, zofsy; /* transform from hoco to zbuf co */
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int *rectz, *arectz; /* zbuffers, arectz is for transparent */
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int *rectz1; /* secondary z buffer for shadowbuffer (2nd closest z) */
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int *rectp; /* polygon index buffer */
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int *recto; /* object buffer */
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int *rectmask; /* negative zmask buffer */
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APixstr *apixbuf, *curpstr; /* apixbuf for transparent */
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APixstrand *curpstrand; /* same for strands */
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struct ListBase *apsmbase;
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int polygon_offset; /* offset in Z */
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float shad_alpha; /* copy from material, used by irregular shadbuf */
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int mask, apsmcounter; /* in use by apixbuf */
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int apstrandmcounter;
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float clipcrop; /* for shadow, was in R global before */
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void *sss_handle; /* used by sss */
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void (*sss_func)(void *, int, int, int, int, int);
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void (*zbuffunc)(struct ZSpan *, int, int, const float *, const float *, const float *, const float *);
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void (*zbuflinefunc)(struct ZSpan *, int, int, const float *, const float *);
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} ZSpan;
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/* exported to shadbuf.c */
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void zbufclip4(struct ZSpan *zspan, int obi, int zvlnr,
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const float f1[4], const float f2[4], const float f3[4], const float f4[4],
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const int c1, const int c2, const int c3, const int c4);
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void zbuf_free_span(struct ZSpan *zspan);
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void freepsA(struct ListBase *lb);
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/* to rendercore.c */
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void zspan_scanconvert(struct ZSpan *zpan, void *handle, float *v1, float *v2, float *v3,
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void (*func)(void *, int, int, float, float) );
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/* exported to edge render... */
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void zbufclip(struct ZSpan *zspan, int obi, int zvlnr,
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const float f1[4], const float f2[4], const float f3[4],
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const int c1, const int c2, const int c3);
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void zbuf_alloc_span(struct ZSpan *zspan, int rectx, int recty, float clipcrop);
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void zbufclipwire(struct ZSpan *zspan, int obi, int zvlnr, int ec,
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const float ho1[4], const float ho2[4], const float ho3[4], const float ho4[4],
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const int c1, const int c2, const int c3, const int c4);
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/* exported to shadeinput.c */
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void zbuf_make_winmat(Render *re, float winmat[4][4]);
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void zbuf_render_project(float winmat[4][4], const float co[3], float ho[4]);
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/* should not really be exposed, bad! */
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void hoco_to_zco(ZSpan *zspan, float zco[3], const float hoco[4]);
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void zspan_scanconvert_strand(ZSpan *zspan, void *handle, float *v1, float *v2, float *v3, void (*func)(void *, int, int, float, float, float) );
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void zbufsinglewire(ZSpan *zspan, int obi, int zvlnr, const float ho1[4], const float ho2[4]);
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#endif
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