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
173 lines
3.2 KiB
C
173 lines
3.2 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_init.c: rasterization driver initialization
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#include "quakedef.h"
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#include "d_local.h"
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#define NUM_MIPS 4
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cvar_t d_subdiv16 = {"d_subdiv16", "1"};
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cvar_t d_mipcap = {"d_mipcap", "0"};
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cvar_t d_mipscale = {"d_mipscale", "1"};
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surfcache_t *d_initial_rover;
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qboolean d_roverwrapped;
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int d_minmip;
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float d_scalemip[NUM_MIPS-1];
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static float basemip[NUM_MIPS-1] = {1.0, 0.5*0.8, 0.25*0.8};
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extern int d_aflatcolor;
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void (*d_drawspans) (espan_t *pspan);
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/*
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===============
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D_Init
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===============
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*/
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void D_Init (void)
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{
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r_skydirect = 1;
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Cvar_RegisterVariable (&d_subdiv16);
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Cvar_RegisterVariable (&d_mipcap);
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Cvar_RegisterVariable (&d_mipscale);
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r_drawpolys = false;
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r_worldpolysbacktofront = false;
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r_recursiveaffinetriangles = true;
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r_pixbytes = 1;
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r_aliasuvscale = 1.0;
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}
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/*
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===============
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D_CopyRects
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===============
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*/
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void D_CopyRects (vrect_t *prects, int transparent)
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{
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// this function is only required if the CPU doesn't have direct access to the
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// back buffer, and there's some driver interface function that the driver
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// doesn't support and requires Quake to do in software (such as drawing the
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// console); Quake will then draw into wherever the driver points vid.buffer
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// and will call this function before swapping buffers
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UNUSED(prects);
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UNUSED(transparent);
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}
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/*
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===============
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D_EnableBackBufferAccess
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===============
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*/
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void D_EnableBackBufferAccess (void)
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{
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VID_LockBuffer ();
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}
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/*
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===============
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D_TurnZOn
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===============
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*/
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void D_TurnZOn (void)
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{
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// not needed for software version
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}
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/*
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===============
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D_DisableBackBufferAccess
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===============
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*/
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void D_DisableBackBufferAccess (void)
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{
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VID_UnlockBuffer ();
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}
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/*
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===============
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D_SetupFrame
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===============
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*/
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void D_SetupFrame (void)
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{
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int i;
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if (r_dowarp)
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d_viewbuffer = r_warpbuffer;
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else
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d_viewbuffer = (void *)(byte *)vid.buffer;
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if (r_dowarp)
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screenwidth = WARP_WIDTH;
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else
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screenwidth = vid.rowbytes;
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d_roverwrapped = false;
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d_initial_rover = sc_rover;
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d_minmip = d_mipcap.value;
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if (d_minmip > 3)
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d_minmip = 3;
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else if (d_minmip < 0)
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d_minmip = 0;
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for (i=0 ; i<(NUM_MIPS-1) ; i++)
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d_scalemip[i] = basemip[i] * d_mipscale.value;
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#if id386
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if (d_subdiv16.value)
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d_drawspans = D_DrawSpans16;
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else
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d_drawspans = D_DrawSpans8;
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#else
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d_drawspans = D_DrawSpans8;
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#endif
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d_aflatcolor = 0;
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}
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/*
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===============
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D_UpdateRects
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===============
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*/
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void D_UpdateRects (vrect_t *prect)
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{
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// the software driver draws these directly to the vid buffer
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UNUSED(prect);
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}
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