5d05b9d3e9
This ports id Software's Quake to run on the SDL plugin runtime. The source code originated from id under the GPLv2 license. I used https://github.com/ahefner/sdlquake as the base of my port. Performance is, unsurprisingly, not on par with what you're probably used to on PC. I average about 10FPS on ipod6g, but it's still playable. Sound works well enough, but in-game music is not supported. I've written ARM assembly routines for the inner sound loop. Make sure you turn the "brightness" all the way down, or colors will look funky. To run, extract Quake's data files to /.rockbox/quake. Have fun! Change-Id: I4285036e967d7f0722802d43cf2096c808ca5799
111 lines
3 KiB
C
111 lines
3 KiB
C
/*
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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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