render.h

   1 /*
   2 Copyright (C) 1996-1997 Id Software, Inc.
   3
   4 This program is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU General Public License
   6 as published by the Free Software Foundation; either version 2
   7 of the License, or (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  12
  13 See the GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18
  19 */
  20
  21 // refresh.h -- public interface to refresh functions
  22
  23 #define MAXCLIPPLANES   11
  24
  25 #define TOP_RANGE               16                      // soldier uniform colors
  26 #define BOTTOM_RANGE    96
  27
  28 //=============================================================================
  29
  30 typedef struct efrag_s
  31 {
  32         struct mleaf_s          *leaf;
  33         struct efrag_s          *leafnext;
  34         struct entity_s         *entity;
  35         struct efrag_s          *entnext;
  36 } efrag_t;
  37
  38
  39 typedef struct entity_s
  40 {
  41         qboolean                                forcelink;              // model changed
  42
  43         int                                             update_type;
  44
  45         entity_state_t                  baseline;               // to fill in defaults in updates
  46         entity_state_t                  deltabaseline;  // LordHavoc: previous frame
  47
  48         double                                  msgtime;                // time of last update
  49         vec3_t                                  msg_origins[2]; // last two updates (0 is newest)
  50         vec3_t                                  origin;
  51         vec3_t                                  msg_angles[2];  // last two updates (0 is newest)
  52         vec3_t                                  angles;
  53
  54         // LordHavoc: added support for alpha transprency and other effects
  55         float                                   alpha;                  // opacity (alpha) of the model
  56         float                                   colormod[3];    // color tint for model
  57         float                                   scale;                  // size the model is shown
  58         int                                             draw_lastpose, draw_pose; // for interpolation
  59         float                                   draw_lerpstart; // for interpolation
  60         struct model_s                  *draw_lastmodel; // for interpolation
  61         float                                   trail_leftover;
  62         float                                   glowsize;               // how big the glow is
  63         byte                                    glowcolor;              // color of glow and particle trail (paletted)
  64         byte                                    glowtrail;              // leaves a trail of particles
  65         byte                                    isviewmodel;    // attached to view
  66
  67         struct model_s                  *model;                 // NULL = no model
  68         struct efrag_s                  *efrag;                 // linked list of efrags
  69         int                                             frame;
  70         float                                   syncbase;               // for client-side animations
  71         byte                                    *colormap;
  72         int                                             effects;                // light, particals, etc
  73         int                                             skinnum;                // for Alias models
  74         int                                             visframe;               // last frame this entity was
  75                                                                                         //  found in an active leaf
  76
  77         int                                             dlightframe;    // dynamic lighting
  78         int                                             dlightbits[8];
  79
  80 // FIXME: could turn these into a union
  81         int                                             trivial_accept;
  82         struct mnode_s                  *topnode;               // for bmodels, first world node
  83                                                                                         //  that splits bmodel, or NULL if
  84                                                                                         //  not split
  85 } entity_t;
  86
  87 // !!! if this is changed, it must be changed in asm_draw.h too !!!
  88 typedef struct
  89 {
  90         vrect_t         vrect;                          // subwindow in video for refresh
  91                                                                         // FIXME: not need vrect next field here?
  92         vrect_t         aliasvrect;                     // scaled Alias version
  93         int                     vrectright, vrectbottom;        // right & bottom screen coords
  94         int                     aliasvrectright, aliasvrectbottom;      // scaled Alias versions
  95         float           vrectrightedge;                 // rightmost right edge we care about,
  96                                                                                 //  for use in edge list
  97         float           fvrectx, fvrecty;               // for floating-point compares
  98         float           fvrectx_adj, fvrecty_adj; // left and top edges, for clamping
  99         int                     vrect_x_adj_shift20;    // (vrect.x + 0.5 - epsilon) << 20
 100         int                     vrectright_adj_shift20; // (vrectright + 0.5 - epsilon) << 20
 101         float           fvrectright_adj, fvrectbottom_adj;
 102                                                                                 // right and bottom edges, for clamping
 103         float           fvrectright;                    // rightmost edge, for Alias clamping
 104         float           fvrectbottom;                   // bottommost edge, for Alias clamping
 105         float           horizontalFieldOfView;  // at Z = 1.0, this many X is visible
 106                                                                                 // 2.0 = 90 degrees
 107         float           xOrigin;                        // should probably allways be 0.5
 108         float           yOrigin;                        // between be around 0.3 to 0.5
 109
 110         vec3_t          vieworg;
 111         vec3_t          viewangles;
 112
 113         float           fov_x, fov_y;
 114
 115         int                     ambientlight;
 116 } refdef_t;
 117
 118
 119 //
 120 // refresh
 121 //
 122 extern  int             reinit_surfcache;
 123
 124
 125 extern  refdef_t        r_refdef;
 126 extern vec3_t   r_origin, vpn, vright, vup;
 127
 128 extern  struct texture_s        *r_notexture_mip;
 129
 130 // LordHavoc: generic image loader
 131 byte* loadimagepixels (char* filename, qboolean complain, int matchwidth, int matchheight);
 132 int loadtextureimage (int texnum, char* filename, qboolean complain, int matchwidth, int matchheight);
 133
 134 void R_Init (void);
 135 void R_InitTextures (void);
 136 void R_InitEfrags (void);
 137 void R_RenderView (void);               // must set r_refdef first
 138 void R_ViewChanged (vrect_t *pvrect, int lineadj, float aspect);
 139                                                                 // called whenever r_refdef or vid change
 140 // LordHavoc: changed this for sake of GLQuake
 141 void R_InitSky (byte *src, int bytesperpixel);  // called at level load
 142 //void R_InitSky (struct texture_s *mt);        // called at level load
 143
 144 void R_AddEfrags (entity_t *ent);
 145 void R_RemoveEfrags (entity_t *ent);
 146
 147 void R_NewMap (void);
 148
 149
 150 void R_ParseParticleEffect (void);
 151 void R_RunParticleEffect (vec3_t org, vec3_t dir, int color, int count);
 152 void R_RocketTrail (vec3_t start, vec3_t end, int type, entity_t *ent);
 153 void R_RocketTrail2 (vec3_t start, vec3_t end, int type, entity_t *ent);
 154 void R_SparkShower (vec3_t org, vec3_t dir, int count, int type);
 155
 156 void R_EntityParticles (entity_t *ent);
 157 void R_BlobExplosion (vec3_t org);
 158 void R_ParticleExplosion (vec3_t org, int smoke);
 159 void R_ParticleExplosion2 (vec3_t org, int colorStart, int colorLength);
 160 void R_LavaSplash (vec3_t org);
 161 void R_TeleportSplash (vec3_t org);
 162
 163 void R_PushDlights (void);
 164
 165
 166 //
 167 // surface cache related
 168 //
 169 extern  int             reinit_surfcache;       // if 1, surface cache is currently empty and
 170 extern qboolean r_cache_thrash; // set if thrashing the surface cache
 171
 172 int     D_SurfaceCacheForRes (int width, int height);
 173 void D_FlushCaches (void);
 174 void D_DeleteSurfaceCache (void);
 175 void D_InitCaches (void *buffer, int size);
 176 void R_SetVrect (vrect_t *pvrect, vrect_t *pvrectin, int lineadj);
 177