mirror of
https://git.code.sf.net/p/quake/newtree
synced 2024-11-25 05:21:58 +00:00
175 lines
3.2 KiB
C
175 lines
3.2 KiB
C
/*
|
|
d_init.c
|
|
|
|
rasterization driver initialization
|
|
|
|
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:
|
|
|
|
Free Software Foundation, Inc.
|
|
59 Temple Place - Suite 330
|
|
Boston, MA 02111-1307, USA
|
|
|
|
$Id$
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
# include "config.h"
|
|
#endif
|
|
|
|
#include "bothdefs.h"
|
|
#include "d_local.h"
|
|
|
|
#define NUM_MIPS 4
|
|
|
|
cvar_t *d_subdiv16;
|
|
cvar_t *d_mipcap;
|
|
cvar_t *d_mipscale;
|
|
|
|
surfcache_t *d_initial_rover;
|
|
qboolean d_roverwrapped;
|
|
int d_minmip;
|
|
float d_scalemip[NUM_MIPS - 1];
|
|
|
|
static float basemip[NUM_MIPS - 1] = { 1.0, 0.5 * 0.8, 0.25 * 0.8 };
|
|
|
|
extern int d_aflatcolor;
|
|
|
|
void (*d_drawspans) (espan_t *pspan);
|
|
|
|
|
|
/*
|
|
D_Init
|
|
*/
|
|
void
|
|
D_Init (void)
|
|
{
|
|
r_skydirect = 1;
|
|
|
|
r_drawpolys = false;
|
|
r_worldpolysbacktofront = false;
|
|
r_recursiveaffinetriangles = true;
|
|
r_pixbytes = 1;
|
|
r_aliasuvscale = 1.0;
|
|
}
|
|
|
|
void
|
|
D_Init_Cvars (void)
|
|
{
|
|
d_subdiv16 = Cvar_Get ("d_subdiv16", "1", CVAR_NONE, NULL, "Set to enable extreme perspective correction");
|
|
d_mipcap = Cvar_Get ("d_mipcap", "0", CVAR_NONE, NULL, "Detail level. 0 is highest, 3 is lowest.");
|
|
d_mipscale = Cvar_Get ("d_mipscale", "1", CVAR_NONE, NULL, "Detail level of objects. 0 is highest, 3 is lowest.");
|
|
}
|
|
|
|
/*
|
|
D_CopyRects
|
|
*/
|
|
void
|
|
D_CopyRects (vrect_t *prects, int transparent)
|
|
{
|
|
|
|
// this function is only required if the CPU doesn't have direct access to the
|
|
// back buffer, and there's some driver interface function that the driver
|
|
// doesn't support and requires Quake to do in software (such as drawing the
|
|
// console); Quake will then draw into wherever the driver points vid.buffer
|
|
// and will call this function before swapping buffers
|
|
|
|
UNUSED (prects);
|
|
UNUSED (transparent);
|
|
}
|
|
|
|
|
|
/*
|
|
D_EnableBackBufferAccess
|
|
*/
|
|
void
|
|
D_EnableBackBufferAccess (void)
|
|
{
|
|
|
|
VID_LockBuffer ();
|
|
}
|
|
|
|
|
|
/*
|
|
D_TurnZOn
|
|
*/
|
|
void
|
|
D_TurnZOn (void)
|
|
{
|
|
// not needed for software version
|
|
}
|
|
|
|
|
|
/*
|
|
D_DisableBackBufferAccess
|
|
*/
|
|
void
|
|
D_DisableBackBufferAccess (void)
|
|
{
|
|
VID_UnlockBuffer ();
|
|
}
|
|
|
|
|
|
/*
|
|
D_SetupFrame
|
|
*/
|
|
void
|
|
D_SetupFrame (void)
|
|
{
|
|
int i;
|
|
|
|
if (r_dowarp)
|
|
d_viewbuffer = r_warpbuffer;
|
|
else
|
|
d_viewbuffer = (void *) (byte *) vid.buffer;
|
|
|
|
if (r_dowarp)
|
|
screenwidth = WARP_WIDTH;
|
|
else
|
|
screenwidth = vid.rowbytes;
|
|
|
|
d_roverwrapped = false;
|
|
d_initial_rover = sc_rover;
|
|
|
|
d_minmip = bound (0, d_mipcap->value, 3);
|
|
|
|
for (i = 0; i < (NUM_MIPS - 1); i++)
|
|
d_scalemip[i] = basemip[i] * d_mipscale->value;
|
|
|
|
#ifdef USE_INTEL_ASM
|
|
if (d_subdiv16->int_val)
|
|
d_drawspans = D_DrawSpans16;
|
|
else
|
|
d_drawspans = D_DrawSpans8;
|
|
#else
|
|
d_drawspans = D_DrawSpans8;
|
|
#endif
|
|
|
|
d_aflatcolor = 0;
|
|
}
|
|
|
|
|
|
/*
|
|
D_UpdateRects
|
|
*/
|
|
void
|
|
D_UpdateRects (vrect_t *prect)
|
|
{
|
|
|
|
// the software driver draws these directly to the vid buffer
|
|
|
|
UNUSED (prect);
|
|
}
|