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 * $Id: render_types.h,v 1.20 2004/12/04 21:49:01 ton Exp $
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version. The Blender
 * Foundation also sells licenses for use in proprietary software under
 * the Blender License.  See http://www.blender.org/BL/ for information
 * about this.
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * GNU General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
 * All rights reserved.
 * The Original Code is: all of this file.
 * Contributor(s): none yet.

#define RENDER_TYPES_H "$Id: render_types.h,v 1.20 2004/12/04 21:49:01 ton Exp $"

#include "DNA_scene_types.h"
#include "DNA_world_types.h"
#include "DNA_object_types.h"

#define TABLEINITSIZE 1024
#define LAMPINITSIZE 256

/* This is needed to not let VC choke on near and far... old
 * proprietary MS extensions... */
#ifdef WIN32
#undef near
#undef far
#define near clipsta
#define far clipend

/* ------------------------------------------------------------------------- */

/* localized renderloop data */
typedef struct ShadeInput
      struct Material *mat, *matren;
      struct VlakRen *vlr;
      float co[3];
      float lo[3], gl[3], uv[3], ref[3], orn[3], winco[3], sticky[3], vcol[3], rad[3];
      float vn[3], view[3], refcol[4], displace[3];
      float xs, ys;     /* pixel to be rendered */
      short osatex;
      int mask;
      int depth;
} ShadeInput;

/* here only stuff to initalize the render itself */
typedef struct RE_Render
      float grvec[3], inprz, inprh;
      float imat[3][3];

      float viewmat[4][4], viewinv[4][4];
      float persmat[4][4], persinv[4][4];
      float winmat[4][4];
      short flag, osa, rt, pad;
       * Screen sizes and positions, in pixels
      short xstart, xend, ystart, yend, afmx, afmy;
      short rectx;  /* Picture width - 1, normally xend - xstart. */  
      short recty;  /* picture height - 1, normally yend - ystart. */

       * Distances and sizes in world coordinates nearvar, farvar were
       * near and far, but VC in cpp mode chokes on it :( */
      float near;    /* near clip distance */
      float far;     /* far clip distance */
      float ycor, zcor, pixsize, viewfac;

      /* These three need to be 'handlerized'. Not an easy task... */
/*    RE_RenderDataHandle r; */
      RenderData r;
      World wrld;
      ListBase parts;
      int totvlak, totvert, tothalo, totlamp;

      /* internal, fortunately */
      struct LampRen **la;
      struct VlakRen **blovl;
      struct VertRen **blove;
      struct HaloRen **bloha;
      unsigned int *rectaccu;
      unsigned int *rectz; /* z buffer: distance buffer */
      unsigned int *rectf1, *rectf2;
      unsigned int *rectot; /* z buffer: face index buffer, recycled as colour buffer! */
      unsigned int *rectspare; /*  */
      /* for 8 byte systems! */
      long *rectdaps;
      short win, winpos, winx, winy, winxof, winyof;
      short winpop, displaymode, sparex, sparey;

      /* Not sure what these do... But they're pointers, so good for handlerization */
      struct Image *backbuf, *frontbuf;
      /* backbuf is an image that drawn as background */
} RE_Render;

/* ------------------------------------------------------------------------- */

 * Part as in part-rendering. An image rendered in parts is rendered
 * to a list of parts, with x,y size, and a pointer to the render
 * output stored per part. Internal!
00133 typedef struct Part
      struct Part *next, *prev;
      unsigned int *rect;
      short x, y;
} Part;

typedef struct ShadBuf {
      short samp, shadhalostep;
      float persmat[4][4];
      float viewmat[4][4];
      float winmat[4][4];
      float *jit;
      float d,far,pixsize,soft;
      int co[3];
      int size,bias;
      unsigned long *zbuf;
      char *cbuf;
} ShadBuf;

/* ------------------------------------------------------------------------- */

typedef struct VertRen
      float co[3];
      float n[3];
      float ho[4];
      float rad[3];                 /* result radio rendering */
      float *orco;
      float *sticky;
      void *svert;                  /* smooth vert, only used during initrender */
      short clip, texofs;           /* texofs= flag */
      float accum;                  /* accum for radio weighting */
      short flag;
} VertRen;

/* ------------------------------------------------------------------------- */

struct halosort {
      struct HaloRen *har;
      unsigned int z;

/* ------------------------------------------------------------------------- */
struct Material;
struct TFace;

typedef struct RadFace {
      float unshot[3], totrad[3];
      float norm[3], cent[3], area;
      int flag;
} RadFace;

typedef struct VlakRen
      struct VertRen *v1, *v2, *v3, *v4;
      float n[3];
      struct Material *mat;
      struct TFace *tface;
      unsigned int *vcol;
      char snproj, puno;
      char flag, ec;
      unsigned int lay;
      unsigned int raycount;
      RadFace *radface;
      Object *ob;
} VlakRen;

/* vlakren->flag is in DNA_scene_types.h */

typedef struct HaloRen
    float alfa, xs, ys, rad, radsq, sin, cos, co[3], no[3];
    unsigned int zs, zd;
    unsigned int zBufDist;/* depth in the z-buffer coordinate system */
    short miny, maxy;
    short hard, b, g, r;
    char starpoints, add, type, tex;
    char linec, ringc, seed;
      short flarec; /* used to be a char. why ?*/
    float hasize;
    int pixels;
    unsigned int lay;
    struct Material *mat;
} HaloRen;

struct LampRen;
struct MTex;

 * For each lamp in a scene, a LampRen is created. It determines the
 * properties of a lightsource.
00226 typedef struct LampRen
      float xs, ys, dist;
      float co[3];
      short type, mode;
      float r, g, b, k;
      float energy, haint;
      int lay;
      float spotsi,spotbl;
      float vec[3];
      float xsp, ysp, distkw, inpr;
      float halokw, halo;
      float ld1,ld2;

      /* copied from Lamp, to decouple more rendering stuff */
      /** Size of the shadowbuffer */
00242       short bufsize;
      /** Number of samples for the shadows */
00244       short samp;
      /** Softness factor for shadow */
00246       float soft;
      /** shadow plus halo: detail level */
00248       short shadhalostep;
      /** Near clip of the lamp */
00250       float clipsta;
      /** Far clip of the lamp */
00252       float clipend;
      /** A small depth offset to prevent self-shadowing. */
00254       float bias;
      short ray_samp, ray_sampy, ray_sampz, ray_samp_type, area_shape, ray_totsamp;
      float area_size, area_sizey, area_sizez;
      struct ShadBuf *shb;
      float *jitter;
      float imat[3][3];
      float spottexfac;
      float sh_invcampos[3], sh_zfac;     /* sh_= spothalo */
      float mat[3][3];  /* 3x3 part from lampmat x viewmat */
      float area[8][3], areasize;
      /* yafray: photonlight params */
      int YF_numphotons, YF_numsearch;
      short YF_phdepth, YF_useqmc, YF_bufsize;
      float YF_causticblur, YF_ltradius;
      /* ray optim */
      VlakRen *vlr_last;
      struct LampRen *org;
      struct MTex *mtex[MAX_MTEX];
} LampRen;

#endif /* RENDER_TYPES_H */

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