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
157 lines
4.8 KiB
C
157 lines
4.8 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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#ifndef GLQUAKE
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// r_shared.h: general refresh-related stuff shared between the refresh and the
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// driver
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// FIXME: clean up and move into d_iface.h
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#ifndef _R_SHARED_H_
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#define _R_SHARED_H_
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#define MAXVERTS 16 // max points in a surface polygon
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#define MAXWORKINGVERTS (MAXVERTS+4) // max points in an intermediate
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// polygon (while processing)
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// !!! if this is changed, it must be changed in d_ifacea.h too !!!
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#define MAXHEIGHT 1024
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#define MAXWIDTH 1280
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#define MAXDIMENSION ((MAXHEIGHT > MAXWIDTH) ? MAXHEIGHT : MAXWIDTH)
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#define SIN_BUFFER_SIZE (MAXDIMENSION+CYCLE)
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#define INFINITE_DISTANCE 0x10000 // distance that's always guaranteed to
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// be farther away than anything in
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// the scene
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//===================================================================
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extern void R_DrawLine (polyvert_t *polyvert0, polyvert_t *polyvert1);
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extern int cachewidth;
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extern pixel_t *cacheblock;
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extern int screenwidth;
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extern float pixelAspect;
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extern int r_drawnpolycount;
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extern cvar_t r_clearcolor;
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extern int sintable[SIN_BUFFER_SIZE];
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extern int intsintable[SIN_BUFFER_SIZE];
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extern vec3_t vup, base_vup;
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extern vec3_t vpn, base_vpn;
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extern vec3_t vright, base_vright;
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extern entity_t *currententity;
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#define NUMSTACKEDGES 2400
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#define MINEDGES NUMSTACKEDGES
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#define NUMSTACKSURFACES 800
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#define MINSURFACES NUMSTACKSURFACES
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#define MAXSPANS 3000
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// !!! if this is changed, it must be changed in asm_draw.h too !!!
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typedef struct espan_s
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{
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int u, v, count;
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struct espan_s *pnext;
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} espan_t;
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// FIXME: compress, make a union if that will help
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// insubmodel is only 1, flags is fewer than 32, spanstate could be a byte
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typedef struct surf_s
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{
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struct surf_s *next; // active surface stack in r_edge.c
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struct surf_s *prev; // used in r_edge.c for active surf stack
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struct espan_s *spans; // pointer to linked list of spans to draw
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int key; // sorting key (BSP order)
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int last_u; // set during tracing
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int spanstate; // 0 = not in span
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// 1 = in span
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// -1 = in inverted span (end before
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// start)
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int flags; // currentface flags
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void *data; // associated data like msurface_t
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entity_t *entity;
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float nearzi; // nearest 1/z on surface, for mipmapping
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qboolean insubmodel;
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float d_ziorigin, d_zistepu, d_zistepv;
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int pad[2]; // to 64 bytes
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} surf_t;
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extern surf_t *surfaces, *surface_p, *surf_max;
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// surfaces are generated in back to front order by the bsp, so if a surf
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// pointer is greater than another one, it should be drawn in front
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// surfaces[1] is the background, and is used as the active surface stack.
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// surfaces[0] is a dummy, because index 0 is used to indicate no surface
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// attached to an edge_t
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//===================================================================
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extern vec3_t sxformaxis[4]; // s axis transformed into viewspace
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extern vec3_t txformaxis[4]; // t axis transformed into viewspac
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extern vec3_t modelorg, base_modelorg;
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extern float xcenter, ycenter;
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extern float xscale, yscale;
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extern float xscaleinv, yscaleinv;
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extern float xscaleshrink, yscaleshrink;
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extern int d_lightstylevalue[256]; // 8.8 frac of base light value
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extern void TransformVector (vec3_t in, vec3_t out);
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extern void SetUpForLineScan(fixed8_t startvertu, fixed8_t startvertv,
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fixed8_t endvertu, fixed8_t endvertv);
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extern int r_skymade;
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extern void R_MakeSky (void);
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extern int ubasestep, errorterm, erroradjustup, erroradjustdown;
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// flags in finalvert_t.flags
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#define ALIAS_LEFT_CLIP 0x0001
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#define ALIAS_TOP_CLIP 0x0002
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#define ALIAS_RIGHT_CLIP 0x0004
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#define ALIAS_BOTTOM_CLIP 0x0008
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#define ALIAS_Z_CLIP 0x0010
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// !!! if this is changed, it must be changed in d_ifacea.h too !!!
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#define ALIAS_ONSEAM 0x0020 // also defined in modelgen.h;
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// must be kept in sync
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#define ALIAS_XY_CLIP_MASK 0x000F
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// !!! if this is changed, it must be changed in asm_draw.h too !!!
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typedef struct edge_s
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{
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fixed16_t u;
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fixed16_t u_step;
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struct edge_s *prev, *next;
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unsigned short surfs[2];
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struct edge_s *nextremove;
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float nearzi;
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medge_t *owner;
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} edge_t;
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#endif // _R_SHARED_H_
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#endif // GLQUAKE
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