mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-11-23 12:52:46 +00:00
6e04fd5ff6
The attached patch (against quakeforge git) changes the [con]width, [con]height, and most importantly the rowbytes members of viddef_t from unsigned to signed int, like in q2. This allows for a properly negative vid.rowbytes which may be needed in, e.g. a DIB sections windows driver if needed. Along with it, I changed a few places where unsigned int is used along with comparisons against the relevant vid.* members. One thing I am not 100% sure is the signedness requirements of d_zrowbytes and d_zwidth: q2 has them as unsigned but I am not sure whether that is because they are needed as unsigned or it was just an oversight of the id developers. They do look like they should be OK as signed int to me, though: comments? == Note from Bill Currie: I had to do some extra changes as many signed/unsigned comparisons were somehow missed.
130 lines
3.5 KiB
C
130 lines
3.5 KiB
C
/*
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d_local.h
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Private rasterization driver defs
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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:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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#ifndef _D_LOCAL_H
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#define _D_LOCAL_H
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#include "QF/model.h"
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#include "QF/qtypes.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 int width;
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unsigned int height; // DEBUG needed only 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 struct cvar_s *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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extern fixed16_t sadjust, tadjust;
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extern fixed16_t bbextents, bbextentt;
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// FIXME: Better way of handling D_DrawSpans depths?
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struct espan_s;
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void D_DrawSpans (struct espan_s *pspans);
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void D_DrawSpans8 (struct espan_s *pspans);
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void D_DrawSpans16 (struct espan_s *pspans);
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void D_DrawZSpans (struct espan_s *pspans);
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void Turbulent (struct espan_s *pspan);
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void D_SpriteDrawSpans (sspan_t *pspan);
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void D_DrawSkyScans (struct espan_s *pspan);
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void R_ShowSubDiv (void);
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extern 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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#ifdef USE_INTEL_ASM
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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 int d_zrowbytes, d_zwidth;
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extern int *d_pscantable;
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extern int d_scantable[];
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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 byte *d_viewbuffer;
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extern short *zspantable[];
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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) (struct espan_s *pspan);
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void D_RasterizeAliasPolySmooth (void);
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void D_PolysetCalcGradients (int skinwidth);
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void D_PolysetScanLeftEdge (int height);
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struct spanpackage_s;
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void D_PolysetDrawSpans8 (struct spanpackage_s * pspanpackage);
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void D_DrawTurbulent8Span (void);
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#endif // _D_LOCAL_H
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