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r_local.h
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r_local.h
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/*
Copyright (C) 1997-2001 Id Software, Inc.
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.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the 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.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <stdarg.h>
#include "../client/ref.h"
#define REF_VERSION "SOFT 0.01"
// up / down
#define PITCH 0
// left / right
#define YAW 1
// fall over
#define ROLL 2
/*
skins will be outline flood filled and mip mapped
pics and sprites with alpha will be outline flood filled
pic won't be mip mapped
model skin
sprite frame
wall texture
pic
*/
typedef enum
{
it_skin,
it_sprite,
it_wall,
it_pic,
it_sky
} imagetype_t;
typedef struct image_s
{
char name[MAX_QPATH]; // game path, including extension
imagetype_t type;
int width, height;
qboolean transparent; // true if any 255 pixels in image
int registration_sequence; // 0 = free
byte *pixels[4]; // mip levels
} image_t;
//===================================================================
typedef unsigned char pixel_t;
typedef struct vrect_s
{
int x,y,width,height;
struct vrect_s *pnext;
} vrect_t;
typedef struct
{
pixel_t *buffer; // invisible buffer
pixel_t *colormap; // 256 * VID_GRADES size
pixel_t *alphamap; // 256 * 256 translucency map
int rowbytes; // may be > width if displayed in a window
// can be negative for stupid dibs
int width;
int height;
} viddef_t;
typedef enum
{
rserr_ok,
rserr_invalid_fullscreen,
rserr_invalid_mode,
rserr_unknown
} rserr_t;
extern viddef_t vid;
// !!! if this is changed, it must be changed in asm_draw.h too !!!
typedef struct
{
vrect_t vrect; // subwindow in video for refresh
// FIXME: not need vrect next field here?
vrect_t aliasvrect; // scaled Alias version
int vrectright, vrectbottom; // right & bottom screen coords
int aliasvrectright, aliasvrectbottom; // scaled Alias versions
float vrectrightedge; // rightmost right edge we care about,
// for use in edge list
float fvrectx, fvrecty; // for floating-point compares
float fvrectx_adj, fvrecty_adj; // left and top edges, for clamping
int vrect_x_adj_shift20; // (vrect.x + 0.5 - epsilon) << 20
int vrectright_adj_shift20; // (vrectright + 0.5 - epsilon) << 20
float fvrectright_adj, fvrectbottom_adj;
// right and bottom edges, for clamping
float fvrectright; // rightmost edge, for Alias clamping
float fvrectbottom; // bottommost edge, for Alias clamping
float horizontalFieldOfView; // at Z = 1.0, this many X is visible
// 2.0 = 90 degrees
float xOrigin; // should probably always be 0.5
float yOrigin; // between be around 0.3 to 0.5
vec3_t vieworg;
vec3_t viewangles;
int ambientlight;
} oldrefdef_t;
extern oldrefdef_t r_refdef;
#include "r_model.h"
#define CACHE_SIZE 32
/*
====================================================
CONSTANTS
====================================================
*/
#define VID_CBITS 6
#define VID_GRADES (1 << VID_CBITS)
// r_shared.h: general refresh-related stuff shared between the refresh and the
// driver
#define MAXVERTS 64 // max points in a surface polygon
#define MAXWORKINGVERTS (MAXVERTS+4) // max points in an intermediate
// polygon (while processing)
// !!! if this is changed, it must be changed in d_ifacea.h too !!!
#define MAXHEIGHT 1200
#define MAXWIDTH 1600
#define INFINITE_DISTANCE 0x10000 // distance that's always guaranteed to
// be farther away than anything in
// the scene
// d_iface.h: interface header file for rasterization driver modules
#define WARP_WIDTH 320
#define WARP_HEIGHT 240
#define MAX_LBM_HEIGHT 480
#define PARTICLE_Z_CLIP 8.0
// !!! must be kept the same as in quakeasm.h !!!
#define TRANSPARENT_COLOR 0xFF
// !!! if this is changed, it must be changed in d_ifacea.h too !!!
#define TURB_TEX_SIZE 64 // base turbulent texture size
// !!! if this is changed, it must be changed in d_ifacea.h too !!!
#define CYCLE 128 // turbulent cycle size
#define SCANBUFFERPAD 0x1000
#define DS_SPAN_LIST_END -128
#define NUMSTACKEDGES 2000
#define MINEDGES NUMSTACKEDGES
#define NUMSTACKSURFACES 1000
#define MINSURFACES NUMSTACKSURFACES
#define MAXSPANS 3000
// flags in finalvert_t.flags
#define ALIAS_LEFT_CLIP 0x0001
#define ALIAS_TOP_CLIP 0x0002
#define ALIAS_RIGHT_CLIP 0x0004
#define ALIAS_BOTTOM_CLIP 0x0008
#define ALIAS_Z_CLIP 0x0010
#define ALIAS_XY_CLIP_MASK 0x000F
#define SURFCACHE_SIZE_AT_320X240 1024*768
#define BMODEL_FULLY_CLIPPED 0x10 // value returned by R_BmodelCheckBBox ()
// if bbox is trivially rejected
#define XCENTERING (1.0 / 2.0)
#define YCENTERING (1.0 / 2.0)
#define CLIP_EPSILON 0.001
#define BACKFACE_EPSILON 0.01
// !!! if this is changed, it must be changed in asm_draw.h too !!!
#define NEAR_CLIP 0.01
#define MAXALIASVERTS 2000 // TODO: tune this
#define ALIAS_Z_CLIP_PLANE 4
// turbulence stuff
#define AMP 8*0x10000
#define AMP2 3
#define SPEED 20
/*
====================================================
TYPES
====================================================
*/
typedef struct
{
float u, v;
float s, t;
float zi;
} emitpoint_t;
/*
** if you change this structure be sure to change the #defines
** listed after it!
*/
#define SMALL_FINALVERT 0
#if SMALL_FINALVERT
typedef struct finalvert_s {
short u, v, s, t;
int l;
int zi;
int flags;
float xyz[3]; // eye space
} finalvert_t;
#define FINALVERT_V0 0
#define FINALVERT_V1 2
#define FINALVERT_V2 4
#define FINALVERT_V3 6
#define FINALVERT_V4 8
#define FINALVERT_V5 12
#define FINALVERT_FLAGS 16
#define FINALVERT_X 20
#define FINALVERT_Y 24
#define FINALVERT_Z 28
#define FINALVERT_SIZE 32
#else
typedef struct finalvert_s {
int u, v, s, t;
int l;
int zi;
int flags;
float xyz[3]; // eye space
} finalvert_t;
#define FINALVERT_V0 0
#define FINALVERT_V1 4
#define FINALVERT_V2 8
#define FINALVERT_V3 12
#define FINALVERT_V4 16
#define FINALVERT_V5 20
#define FINALVERT_FLAGS 24
#define FINALVERT_X 28
#define FINALVERT_Y 32
#define FINALVERT_Z 36
#define FINALVERT_SIZE 40
#endif
typedef struct
{
void *pskin;
int pskindesc;
int skinwidth;
int skinheight;
dtriangle_t *ptriangles;
finalvert_t *pfinalverts;
int numtriangles;
int drawtype;
int seamfixupX16;
qboolean do_vis_thresh;
int vis_thresh;
} affinetridesc_t;
typedef struct
{
byte *surfdat; // destination for generated surface
int rowbytes; // destination logical width in bytes
msurface_t *surf; // description for surface to generate
fixed8_t lightadj[MAXLIGHTMAPS];
// adjust for lightmap levels for dynamic lighting
image_t *image;
int surfmip; // mipmapped ratio of surface texels / world pixels
int surfwidth; // in mipmapped texels
int surfheight; // in mipmapped texels
} drawsurf_t;
typedef struct {
int ambientlight;
int shadelight;
float *plightvec;
} alight_t;
// clipped bmodel edges
typedef struct bedge_s
{
mvertex_t *v[2];
struct bedge_s *pnext;
} bedge_t;
// !!! if this is changed, it must be changed in asm_draw.h too !!!
typedef struct clipplane_s
{
vec3_t normal;
float dist;
struct clipplane_s *next;
byte leftedge;
byte rightedge;
byte reserved[2];
} clipplane_t;
typedef struct surfcache_s
{
struct surfcache_s *next;
struct surfcache_s **owner; // NULL is an empty chunk of memory
int lightadj[MAXLIGHTMAPS]; // checked for strobe flush
int dlight;
int size; // including header
unsigned width;
unsigned height; // DEBUG only needed for debug
float mipscale;
image_t *image;
byte data[4]; // width*height elements
} surfcache_t;
// !!! if this is changed, it must be changed in asm_draw.h too !!!
typedef struct espan_s
{
int u, v, count;
struct espan_s *pnext;
} espan_t;
// used by the polygon drawer (R_POLY.C) and sprite setup code (R_SPRITE.C)
typedef struct
{
int nump;
emitpoint_t *pverts;
byte *pixels; // image
int pixel_width; // image width
int pixel_height; // image height
vec3_t vup, vright, vpn; // in worldspace, for plane eq
float dist;
float s_offset, t_offset;
float viewer_position[3];
void (*drawspanlet)( void );
int stipple_parity;
} polydesc_t;
// FIXME: compress, make a union if that will help
// insubmodel is only 1, flags is fewer than 32, spanstate could be a byte
typedef struct surf_s
{
struct surf_s *next; // active surface stack in r_edge.c
struct surf_s *prev; // used in r_edge.c for active surf stack
struct espan_s *spans; // pointer to linked list of spans to draw
int key; // sorting key (BSP order)
int last_u; // set during tracing
int spanstate; // 0 = not in span
// 1 = in span
// -1 = in inverted span (end before
// start)
int flags; // currentface flags
msurface_t *msurf;
entity_t *entity;
float nearzi; // nearest 1/z on surface, for mipmapping
qboolean insubmodel;
float d_ziorigin, d_zistepu, d_zistepv;
int pad[2]; // to 64 bytes
} surf_t;
// !!! if this is changed, it must be changed in asm_draw.h too !!!
typedef struct edge_s
{
fixed16_t u;
fixed16_t u_step;
struct edge_s *prev, *next;
unsigned short surfs[2];
struct edge_s *nextremove;
float nearzi;
medge_t *owner;
} edge_t;
/*
====================================================
VARS
====================================================
*/
extern int d_spanpixcount;
extern int r_framecount; // sequence # of current frame since Quake
// started
extern float r_aliasuvscale; // scale-up factor for screen u and v
// on Alias vertices passed to driver
extern qboolean r_dowarp;
extern affinetridesc_t r_affinetridesc;
extern vec3_t r_pright, r_pup, r_ppn;
void D_DrawSurfaces (void);
void R_DrawParticle( void );
void D_ViewChanged (void);
void D_WarpScreen (void);
void R_PolysetUpdateTables (void);
extern void *acolormap; // FIXME: should go away
//=======================================================================//
// callbacks to Quake
extern drawsurf_t r_drawsurf;
void R_DrawSurface (void);
extern int c_surf;
extern byte r_warpbuffer[WARP_WIDTH * WARP_HEIGHT];
extern float scale_for_mip;
extern qboolean d_roverwrapped;
extern surfcache_t *sc_rover;
extern surfcache_t *d_initial_rover;
extern float d_sdivzstepu, d_tdivzstepu, d_zistepu;
extern float d_sdivzstepv, d_tdivzstepv, d_zistepv;
extern float d_sdivzorigin, d_tdivzorigin, d_ziorigin;
extern fixed16_t sadjust, tadjust;
extern fixed16_t bbextents, bbextentt;
void D_DrawSpans16 (espan_t *pspans);
void D_DrawZSpans (espan_t *pspans);
void Turbulent8 (espan_t *pspan);
void NonTurbulent8 (espan_t *pspan); //PGM
surfcache_t *D_CacheSurface (msurface_t *surface, int miplevel);
extern int d_vrectx, d_vrecty, d_vrectright_particle, d_vrectbottom_particle;
extern int d_pix_min, d_pix_max, d_pix_shift;
extern pixel_t *d_viewbuffer;
extern short *d_pzbuffer;
extern unsigned int d_zrowbytes, d_zwidth;
extern short *zspantable[MAXHEIGHT];
extern int d_scantable[MAXHEIGHT];
extern int d_minmip;
extern float d_scalemip[3];
//===================================================================
extern int cachewidth;
extern pixel_t *cacheblock;
extern int r_screenwidth;
extern int r_drawnpolycount;
extern int sintable[1280];
extern int intsintable[1280];
extern int blanktable[1280]; // PGM
extern vec3_t vup, base_vup;
extern vec3_t vpn, base_vpn;
extern vec3_t vright, base_vright;
extern surf_t *surfaces, *surface_p, *surf_max;
// surfaces are generated in back to front order by the bsp, so if a surf
// pointer is greater than another one, it should be drawn in front
// surfaces[1] is the background, and is used as the active surface stack.
// surfaces[0] is a dummy, because index 0 is used to indicate no surface
// attached to an edge_t
//===================================================================
extern vec3_t sxformaxis[4]; // s axis transformed into viewspace
extern vec3_t txformaxis[4]; // t axis transformed into viewspac
extern float xcenter, ycenter;
extern float xscale, yscale;
extern float xscaleinv, yscaleinv;
extern float xscaleshrink, yscaleshrink;
extern void TransformVector (vec3_t in, vec3_t out);
extern void SetUpForLineScan(fixed8_t startvertu, fixed8_t startvertv,
fixed8_t endvertu, fixed8_t endvertv);
extern int ubasestep, errorterm, erroradjustup, erroradjustdown;
//===========================================================================
extern cvar_t *sw_aliasstats;
extern cvar_t *sw_clearcolor;
extern cvar_t *sw_drawflat;
extern cvar_t *sw_draworder;
extern cvar_t *sw_maxedges;
extern cvar_t *sw_maxsurfs;
extern cvar_t *sw_mipcap;
extern cvar_t *sw_mipscale;
extern cvar_t *sw_mode;
extern cvar_t *sw_reportsurfout;
extern cvar_t *sw_reportedgeout;
extern cvar_t *sw_stipplealpha;
extern cvar_t *sw_surfcacheoverride;
extern cvar_t *sw_waterwarp;
extern cvar_t *r_fullbright;
extern cvar_t *r_lefthand;
extern cvar_t *r_drawentities;
extern cvar_t *r_drawworld;
extern cvar_t *r_dspeeds;
extern cvar_t *r_lerpmodels;
extern cvar_t *r_speeds;
extern cvar_t *r_lightlevel; //FIXME HACK
extern cvar_t *vid_fullscreen;
extern cvar_t *vid_gamma;
extern clipplane_t view_clipplanes[4];
extern int *pfrustum_indexes[4];
//=============================================================================
void R_RenderWorld (void);
//=============================================================================
extern mplane_t screenedge[4];
extern vec3_t r_origin;
extern entity_t r_worldentity;
extern model_t *currentmodel;
extern entity_t *currententity;
extern vec3_t modelorg;
extern vec3_t r_entorigin;
extern float verticalFieldOfView;
extern float xOrigin, yOrigin;
extern int r_visframecount;
extern msurface_t *r_alpha_surfaces;
//=============================================================================
void R_ClearPolyList (void);
void R_DrawPolyList (void);
//
// current entity info
//
extern qboolean insubmodel;
void R_DrawAlphaSurfaces( void );
void R_DrawSprite (void);
void R_DrawBeam( entity_t *e );
void R_RenderFace (msurface_t *fa, int clipflags);
void R_RenderBmodelFace (bedge_t *pedges, msurface_t *psurf);
void R_TransformPlane (mplane_t *p, float *normal, float *dist);
void R_TransformFrustum (void);
void R_DrawSurfaceBlock16 (void);
void R_DrawSurfaceBlock8 (void);
#if id386
void R_DrawSurfaceBlock8_mip0 (void);
void R_DrawSurfaceBlock8_mip1 (void);
void R_DrawSurfaceBlock8_mip2 (void);
void R_DrawSurfaceBlock8_mip3 (void);
#endif
void R_GenSkyTile (void *pdest);
void R_GenSkyTile16 (void *pdest);
void R_Surf8Patch (void);
void R_Surf16Patch (void);
void R_DrawSubmodelPolygons (model_t *pmodel, int clipflags, mnode_t *topnode);
void R_DrawSolidClippedSubmodelPolygons (model_t *pmodel, mnode_t *topnode);
void R_AddPolygonEdges (emitpoint_t *pverts, int numverts, int miplevel);
surf_t *R_GetSurf (void);
void R_AliasDrawModel (void);
void R_BeginEdgeFrame (void);
void R_ScanEdges (void);
void D_DrawSurfaces (void);
void R_InsertNewEdges (edge_t *edgestoadd, edge_t *edgelist);
void R_StepActiveU (edge_t *pedge);
void R_RemoveEdges (edge_t *pedge);
void R_PushDlights (model_t *model);
extern void R_Surf8Start (void);
extern void R_Surf8End (void);
extern void R_Surf16Start (void);
extern void R_Surf16End (void);
extern void R_EdgeCodeStart (void);
extern void R_EdgeCodeEnd (void);
extern void R_RotateBmodel (void);
extern int c_faceclip;
extern int r_polycount;
extern int r_wholepolycount;
extern int ubasestep, errorterm, erroradjustup, erroradjustdown;
extern fixed16_t sadjust, tadjust;
extern fixed16_t bbextents, bbextentt;
extern mvertex_t *r_ptverts, *r_ptvertsmax;
extern float entity_rotation[3][3];
extern int r_currentkey;
extern int r_currentbkey;
void R_InitTurb (void);
void R_DrawParticles (void);
void R_SurfacePatch (void);
extern int r_amodels_drawn;
extern edge_t *auxedges;
extern int r_numallocatededges;
extern edge_t *r_edges, *edge_p, *edge_max;
extern edge_t *newedges[MAXHEIGHT];
extern edge_t *removeedges[MAXHEIGHT];
// FIXME: make stack vars when debugging done
extern edge_t edge_head;
extern edge_t edge_tail;
extern edge_t edge_aftertail;
extern int r_aliasblendcolor;
extern float aliasxscale, aliasyscale, aliasxcenter, aliasycenter;
extern int r_outofsurfaces;
extern int r_outofedges;
extern mvertex_t *r_pcurrentvertbase;
extern int r_maxvalidedgeoffset;
typedef struct
{
finalvert_t *a, *b, *c;
} aliastriangleparms_t;
extern aliastriangleparms_t aliastriangleparms;
void R_DrawTriangle( void );
//void R_DrawTriangle (finalvert_t *index0, finalvert_t *index1, finalvert_t *index2);
void R_AliasClipTriangle (finalvert_t *index0, finalvert_t *index1, finalvert_t *index2);
extern float r_time1;
extern float da_time1, da_time2;
extern float dp_time1, dp_time2, db_time1, db_time2, rw_time1, rw_time2;
extern float se_time1, se_time2, de_time1, de_time2, dv_time1, dv_time2;
extern int r_frustum_indexes[4*6];
extern int r_maxsurfsseen, r_maxedgesseen, r_cnumsurfs;
extern qboolean r_surfsonstack;
extern mleaf_t *r_viewleaf;
extern int r_viewcluster, r_oldviewcluster;
extern int r_clipflags;
extern int r_dlightframecount;
extern qboolean r_fov_greater_than_90;
extern image_t *r_notexture_mip;
extern model_t *r_worldmodel;
void R_PrintAliasStats (void);
void R_PrintTimes (void);
void R_PrintDSpeeds (void);
void R_AnimateLight (void);
void R_LightPoint (vec3_t p, vec3_t color);
void R_SetupFrame (void);
void R_cshift_f (void);
void R_EmitEdge (mvertex_t *pv0, mvertex_t *pv1);
void R_ClipEdge (mvertex_t *pv0, mvertex_t *pv1, clipplane_t *clip);
void R_SplitEntityOnNode2 (mnode_t *node);
extern refdef_t r_newrefdef;
extern surfcache_t *sc_rover, *sc_base;
extern void *colormap;
//====================================================================
float R_DLightPoint (vec3_t p);
void R_NewMap (void);
void R_Register (void);
void R_UnRegister (void);
void Draw_InitLocal (void);
qboolean R_Init( void *hInstance, void *wndProc );
void R_Shutdown (void);
void R_InitCaches (void);
void D_FlushCaches (void);
void R_ScreenShot_f( void );
void R_BeginRegistration (char *map);
struct model_s *R_RegisterModel (char *name);
void R_EndRegistration (void);
void R_RenderFrame (refdef_t *fd);
struct image_s *Draw_FindPic (char *name);
void Draw_GetPicSize (int *w, int *h, char *name);
void Draw_Pic (int x, int y, char *name);
void Draw_StretchPic (int x, int y, int w, int h, char *name);
void Draw_StretchRaw (int x, int y, int w, int h, int cols, int rows, byte *data);
void Draw_Char (int x, int y, int c);
void Draw_TileClear (int x, int y, int w, int h, char *name);
void Draw_Fill (int x, int y, int w, int h, int c);
void Draw_FadeScreen (void);
void Draw_GetPalette (void);
void R_BeginFrame( float camera_separation );
void R_CinematicSetPalette( const unsigned char *palette );
extern unsigned d_8to24table[256]; // base
void Sys_MakeCodeWriteable (unsigned long startaddr, unsigned long length);
void Sys_SetFPCW (void);
void LoadPCX (char *filename, byte **pic, byte **palette, int *width, int *height);
void R_InitImages (void);
void R_ShutdownImages (void);
image_t *R_FindImage (char *name, imagetype_t type);
void R_FreeUnusedImages (void);
void R_GammaCorrectAndSetPalette( const unsigned char *pal );
extern mtexinfo_t *sky_texinfo[6];
void R_InitSkyBox (void);
typedef struct swstate_s
{
qboolean fullscreen;
int prev_mode; // last valid SW mode
byte gammatable[256];
byte currentpalette[1024];
} swstate_t;
void R_IMFlatShadedQuad( vec3_t a, vec3_t b, vec3_t c, vec3_t d, int color, float alpha );
extern swstate_t sw_state;
/*
====================================================================
IMPORTED FUNCTIONS
====================================================================
*/
extern refimport_t ri;
/*
====================================================================
IMPLEMENTATION FUNCTIONS
====================================================================
*/
void SWimp_BeginFrame( float camera_separation );
void SWimp_EndFrame (void);
int SWimp_Init( void *hInstance, void *wndProc );
void SWimp_SetPalette( const unsigned char *palette);
void SWimp_Shutdown( void );
rserr_t SWimp_SetMode( int *pwidth, int *pheight, int mode, qboolean fullscreen );
void SWimp_AppActivate( qboolean active );