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112 lines
3 KiB
C
112 lines
3 KiB
C
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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_local.h: private rasterization driver defs
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#include "r_shared.h"
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//
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// TODO: fine-tune this; it's based on providing some overage even if there
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// is a 2k-wide scan, with subdivision every 8, for 256 spans of 12 bytes each
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//
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#define SCANBUFFERPAD 0x1000
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#define R_SKY_SMASK 0x007F0000
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#define R_SKY_TMASK 0x007F0000
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#define DS_SPAN_LIST_END -128
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#define SURFCACHE_SIZE_AT_320X200 600*1024
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typedef struct surfcache_s
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{
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struct surfcache_s *next;
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struct surfcache_s **owner; // NULL is an empty chunk of memory
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int lightadj[MAXLIGHTMAPS]; // checked for strobe flush
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int dlight;
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int size; // including header
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unsigned width;
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unsigned height; // DEBUG only needed for debug
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float mipscale;
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struct texture_s *texture; // checked for animating textures
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byte data[4]; // width*height elements
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} surfcache_t;
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// !!! if this is changed, it must be changed in asm_draw.h too !!!
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typedef struct sspan_s
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{
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int u, v, count;
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} sspan_t;
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extern cvar_t d_subdiv16;
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extern float scale_for_mip;
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extern qboolean d_roverwrapped;
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extern surfcache_t *sc_rover;
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extern surfcache_t *d_initial_rover;
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extern float d_sdivzstepu, d_tdivzstepu, d_zistepu;
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extern float d_sdivzstepv, d_tdivzstepv, d_zistepv;
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extern float d_sdivzorigin, d_tdivzorigin, d_ziorigin;
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fixed16_t sadjust, tadjust;
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fixed16_t bbextents, bbextentt;
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void D_DrawSpans8 (espan_t *pspans);
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void D_DrawSpans16 (espan_t *pspans);
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void D_DrawZSpans (espan_t *pspans);
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void Turbulent8 (espan_t *pspan);
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void D_SpriteDrawSpans (sspan_t *pspan);
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void D_DrawSkyScans8 (espan_t *pspan);
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void D_DrawSkyScans16 (espan_t *pspan);
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void R_ShowSubDiv (void);
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void (*prealspandrawer)(void);
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surfcache_t *D_CacheSurface (msurface_t *surface, int miplevel);
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extern int D_MipLevelForScale (float scale);
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#if id386
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extern void D_PolysetAff8Start (void);
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extern void D_PolysetAff8End (void);
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#endif
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extern short *d_pzbuffer;
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extern unsigned int d_zrowbytes, d_zwidth;
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extern int *d_pscantable;
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extern int d_scantable[MAXHEIGHT];
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extern int d_vrectx, d_vrecty, d_vrectright_particle, d_vrectbottom_particle;
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extern int d_y_aspect_shift, d_pix_min, d_pix_max, d_pix_shift;
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extern pixel_t *d_viewbuffer;
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extern short *zspantable[MAXHEIGHT];
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extern int d_minmip;
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extern float d_scalemip[3];
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extern void (*d_drawspans) (espan_t *pspan);
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