/* | |
Copyright (C) 1996-1997 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. | |
*/ | |
// d_local.h: private rasterization driver defs | |
#include "r_shared.h" | |
// | |
// TODO: fine-tune this; it's based on providing some overage even if there | |
// is a 2k-wide scan, with subdivision every 8, for 256 spans of 12 bytes each | |
// | |
#define SCANBUFFERPAD 0x1000 | |
#define R_SKY_SMASK 0x007F0000 | |
#define R_SKY_TMASK 0x007F0000 | |
#define DS_SPAN_LIST_END -128 | |
#define SURFCACHE_SIZE_AT_320X200 600*1024 | |
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; | |
struct texture_s *texture; // checked for animating textures | |
byte data[4]; // width*height elements | |
} surfcache_t; | |
// !!! if this is changed, it must be changed in asm_draw.h too !!! | |
typedef struct sspan_s | |
{ | |
int u, v, count; | |
} sspan_t; | |
extern cvar_t d_subdiv16; | |
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; | |
fixed16_t sadjust, tadjust; | |
fixed16_t bbextents, bbextentt; | |
void D_DrawSpans8 (espan_t *pspans); | |
void D_DrawSpans16 (espan_t *pspans); | |
void D_DrawZSpans (espan_t *pspans); | |
void Turbulent8 (espan_t *pspan); | |
void D_SpriteDrawSpans (sspan_t *pspan); | |
void D_DrawSkyScans8 (espan_t *pspan); | |
void D_DrawSkyScans16 (espan_t *pspan); | |
void R_ShowSubDiv (void); | |
void (*prealspandrawer)(void); | |
surfcache_t *D_CacheSurface (msurface_t *surface, int miplevel); | |
extern int D_MipLevelForScale (float scale); | |
#if id386 | |
extern void D_PolysetAff8Start (void); | |
extern void D_PolysetAff8End (void); | |
#endif | |
extern short *d_pzbuffer; | |
extern unsigned int d_zrowbytes, d_zwidth; | |
extern int *d_pscantable; | |
extern int d_scantable[MAXHEIGHT]; | |
extern int d_vrectx, d_vrecty, d_vrectright_particle, d_vrectbottom_particle; | |
extern int d_y_aspect_shift, d_pix_min, d_pix_max, d_pix_shift; | |
extern pixel_t *d_viewbuffer; | |
extern short *zspantable[MAXHEIGHT]; | |
extern int d_minmip; | |
extern float d_scalemip[3]; | |
extern void (*d_drawspans) (espan_t *pspan); | |