Initial checkin of software rendering bits and bobs.
git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@20 fc73d0e0-1445-4013-8a0c-d673dee63da5
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engine/sw/d_iface.h
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engine/sw/d_iface.h
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/*
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Copyright (C) 1996-1997 Id Software, Inc.
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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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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.
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See the GNU General Public License for more details.
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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
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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// d_iface.h: interface header file for rasterization driver modules
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#define WARP_WIDTH 320
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#define WARP_HEIGHT 200
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#define MAX_LBM_HEIGHT 480
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typedef struct
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{
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float u, v;
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float s, t;
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float zi;
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} emitpoint_t;
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#include "particles.h"
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typedef struct polyvert_s {
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float u, v, zi, s, t;
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} polyvert_t;
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typedef struct polydesc_s {
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int numverts;
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float nearzi;
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msurface_t *pcurrentface;
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polyvert_t *pverts;
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} polydesc_t;
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// !!! if this is changed, it must be changed in d_ifacea.h too !!!
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typedef struct finalvert_s {
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int v[6]; // u, v, s, t, l, 1/z
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int flags;
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float reserved;
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} finalvert_t;
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// !!! if this is changed, it must be changed in d_ifacea.h too !!!
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typedef struct
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{
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void *pskin;
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maliasskindesc_t *pskindesc;
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int skinwidth;
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int skinheight;
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mtriangle_t *ptriangles;
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finalvert_t *pfinalverts;
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int numtriangles;
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int drawtype;
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mstvert_t *pstverts;
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//int seamfixupX16;
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} affinetridesc_t;
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// !!! if this is changed, it must be changed in d_ifacea.h too !!!
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typedef struct {
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float u, v, zi, color;
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} screenpart_t;
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typedef struct
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{
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int nump;
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emitpoint_t *pverts; // there's room for an extra element at [nump],
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// if the driver wants to duplicate element [0] at
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// element [nump] to avoid dealing with wrapping
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mspriteframe_t *pspriteframe;
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vec3_t vup, vright, vpn; // in worldspace
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float nearzi;
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} spritedesc_t;
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typedef struct
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{
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int u, v;
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float zi;
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int color;
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} zpointdesc_t;
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extern cvar_t r_drawflat;
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extern int d_spanpixcount;
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extern int r_framecount; // sequence # of current frame since Quake
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// started
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extern qboolean r_drawpolys; // 1 if driver wants clipped polygons
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// rather than a span list
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extern qboolean r_drawculledpolys; // 1 if driver wants clipped polygons that
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// have been culled by the edge list
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extern qboolean r_worldpolysbacktofront; // 1 if driver wants polygons
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// delivered back to front rather
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// than front to back
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extern qboolean r_recursiveaffinetriangles; // true if a driver wants to use
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// recursive triangular subdivison
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// and vertex drawing via
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// D_PolysetDrawFinalVerts() past
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// a certain distance (normally
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// only used by the software
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// driver)
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extern float r_aliasuvscale; // scale-up factor for screen u and v
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// on Alias vertices passed to driver
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//16 bit rendering.
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extern int redbits, redshift;
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extern int greenbits, greenshift;
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extern int bluebits, blueshift;
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extern int r_pixbytes;
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extern qboolean r_dowarp;
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extern affinetridesc_t r_affinetridesc;
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extern spritedesc_t r_spritedesc;
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extern zpointdesc_t r_zpointdesc;
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extern polydesc_t r_polydesc;
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extern int d_con_indirect; // if 0, Quake will draw console directly
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// to vid.buffer; if 1, Quake will
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// draw console via D_DrawRect. Must be
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// defined by driver
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extern vec3_t r_pright, r_pup, r_ppn;
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void D_Aff8Patch (void *pcolormap);
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void GLD_BeginDirectRect (int x, int y, qbyte *pbitmap, int width, int height);
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void SWD_BeginDirectRect (int x, int y, qbyte *pbitmap, int width, int height);
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void D_DisableBackBufferAccess (void);
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void GLD_EndDirectRect (int x, int y, int width, int height);
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void SWD_EndDirectRect (int x, int y, int width, int height);
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void D_PolysetDraw (void);
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void D_PolysetDraw16 (void);
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void D_PolysetDraw32 (void);
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void D_PolysetDrawFinalVerts (finalvert_t *fv, int numverts);
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void D_PolysetDrawFinalVerts32Trans (finalvert_t *fv, int numverts);
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void D_DrawParticle (particle_t *pparticle);
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void D_DrawPoly (void);
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void D_DrawSprite (void);
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void D_DrawSurfaces (void);
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void D_DrawZPoint (void);
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void D_ClearDepth(void);
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void D_EnableBackBufferAccess (void);
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void D_EndParticles (void);
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void D_Init (void);
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void D_ViewChanged (void);
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void D_SetupFrame (void);
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void D_StartParticles (void);
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void D_TurnZOn (void);
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void D_WarpScreen (void);
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void D_FillRect (vrect_t *vrect, int color);
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void D_DrawRect (void);
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void D_UpdateRects (vrect_t *prect);
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// currently for internal use only, and should be a do-nothing function in
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// hardware drivers
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// FIXME: this should go away
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void D_PolysetUpdateTables (void);
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// these are currently for internal use only, and should not be used by drivers
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extern int r_skydirect;
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extern qbyte *r_skysource;
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// transparency types for D_DrawRect ()
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#define DR_SOLID 0
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#define DR_TRANSPARENT 1
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// !!! must be kept the same as in quakeasm.h !!!
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#define TRANSPARENT_COLOR 0xFF
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extern void *acolormap; // FIXME: should go away
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//=======================================================================//
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// callbacks to Quake
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typedef struct
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{
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pixel_t *surfdat; // destination for generated surface
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int rowbytes; // destination logical width in bytes
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msurface_t *surf; // description for surface to generate
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fixed8_t lightadj[MAXLIGHTMAPS];
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// adjust for lightmap levels for dynamic lighting
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texture_t *texture; // corrected for animating textures
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int surfmip; // mipmapped ratio of surface texels / world pixels
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int surfwidth; // in mipmapped texels
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int surfheight; // in mipmapped texels
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} drawsurf_t;
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extern drawsurf_t r_drawsurf;
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void R_DrawSurface (void);
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void R_DrawSurface32 (void);
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void R_GenTile (msurface_t *psurf, void *pdest);
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// !!! if this is changed, it must be changed in d_ifacea.h too !!!
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#define TURB_TEX_SIZE 64 // base turbulent texture size
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// !!! if this is changed, it must be changed in d_ifacea.h too !!!
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#define CYCLE 128 // turbulent cycle size
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#define TILE_SIZE 128 // size of textures generated by R_GenTiledSurf
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#define SKYSHIFT 7
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#define SKYSIZE (1 << SKYSHIFT)
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#define SKYMASK (SKYSIZE - 1)
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extern float skyspeed, skyspeed2;
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extern float skytime;
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extern int c_surf;
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extern vrect_t scr_vrect;
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extern qbyte *r_warpbuffer;
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