352 lines
7.9 KiB
C
352 lines
7.9 KiB
C
/*
|
|
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 the Free Software
|
|
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
|
|
*/
|
|
// d_init.c: rasterization driver initialization
|
|
|
|
#include "globaldef.h"
|
|
#include "d_local.h"
|
|
|
|
#define NUM_MIPS 4
|
|
|
|
cvar_t *d_subdiv16;
|
|
cvar_t *r_filter;
|
|
cvar_t *d_mipcap;
|
|
cvar_t *d_mipscale;
|
|
cvar_t *d_mipdetail;
|
|
cvar_t *r_wateralpha;
|
|
|
|
float oldwateralpha;
|
|
float newwateralpha; // leilei - dirty hack to see if our values changed
|
|
// and if so, make a new translucency table!
|
|
|
|
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);
|
|
void (*d_fogspans) (espan_t *pspan); // leilei - alternate fogging method (to get along with the asm spans etc)
|
|
|
|
/*
|
|
===============
|
|
D_Init
|
|
===============
|
|
*/
|
|
extern cvar_t *engoo_lookuppalette;
|
|
void D_Init (void)
|
|
{
|
|
|
|
r_skydirect = 1;
|
|
|
|
d_subdiv16 = Cvar_Get ("d_subdiv16", "1", CVAR_ORIGINAL);
|
|
d_mipcap = Cvar_Get ("d_mipcap", "0", CVAR_ORIGINAL);
|
|
d_mipscale = Cvar_Get ("d_mipscale", "1", CVAR_ORIGINAL);
|
|
engoo_lookuppalette = Cvar_Get ("engoo_lookuppalette", "0", CVAR_ORIGINAL);
|
|
d_mipdetail = Cvar_Get ("d_mipdetail", "0", CVAR_ARCHIVE | CVAR_ORIGINAL); // leilei - mip detail cvar (combines mipcap and mipscale)
|
|
r_wateralpha = Cvar_Get ("r_wateralpha", "1", CVAR_ARCHIVE | CVAR_ORIGINAL); // leilei - water translucency
|
|
r_drawpolys = false;
|
|
r_worldpolysbacktofront = false;
|
|
r_recursiveaffinetriangles = true;
|
|
|
|
if (!r_pixbytes)
|
|
r_pixbytes = 1;
|
|
|
|
r_aliasuvscale = 1.0;
|
|
|
|
}
|
|
|
|
|
|
/*
|
|
===============
|
|
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 ();
|
|
}
|
|
|
|
|
|
extern int ditheredrend;
|
|
/*
|
|
===============
|
|
D_SetupFrame
|
|
===============
|
|
*/
|
|
extern int reflectpass;
|
|
|
|
void D_SetupFrame (void)
|
|
{
|
|
int i;
|
|
|
|
if (r_docrap == 1)
|
|
d_viewbuffer = r_lowbuffer;
|
|
else if (r_docrap > 1)
|
|
d_viewbuffer = r_warpbuffer;
|
|
else if (r_dowarp)
|
|
d_viewbuffer = r_warpbuffer;
|
|
#ifdef WATERLOW
|
|
else if (reflectpass)
|
|
d_viewbuffer = r_reflectbuffer;
|
|
#endif
|
|
else
|
|
d_viewbuffer = (void *)(byte *)vid.buffer;
|
|
|
|
if (r_docrap == 1)
|
|
screenwidth = LOW_WIDTH;
|
|
else if (r_docrap > 1)
|
|
screenwidth = WARP_WIDTH;
|
|
else if (r_dowarp)
|
|
screenwidth = WARP_WIDTH;
|
|
#ifdef WATERLOW
|
|
else if (reflectpass)
|
|
screenwidth = WARP_WIDTH;
|
|
#endif
|
|
else
|
|
screenwidth = vid.rowbytes;
|
|
|
|
|
|
d_roverwrapped = false;
|
|
d_initial_rover = sc_rover;
|
|
|
|
// leilei - easy mip detail cvar controls override the quakes
|
|
if (d_mipdetail->value == 64)
|
|
{ // leilei - special exception - try to force half detail unless 32x32 and lower. no others!
|
|
d_minmip = 1;
|
|
for (i=0 ; i<(NUM_MIPS-1) ; i++)
|
|
d_scalemip[i] = 0;
|
|
|
|
}
|
|
else
|
|
if (d_mipdetail->value){
|
|
d_minmip = d_mipdetail->value;
|
|
if (d_minmip > 3)
|
|
d_minmip = 3;
|
|
else if (d_minmip < 0)
|
|
d_minmip = 0;
|
|
|
|
for (i=0 ; i<(NUM_MIPS-1) ; i++)
|
|
d_scalemip[i] = basemip[i] * (d_mipdetail->value * 5);
|
|
}
|
|
else
|
|
{
|
|
d_minmip = d_mipcap->value;
|
|
if (reflectpass)
|
|
d_minmip = 2; // leilei - force blurry textures for reflections
|
|
if (d_minmip > 3)
|
|
d_minmip = 3;
|
|
else if (d_minmip < 0)
|
|
d_minmip = 0;
|
|
|
|
for (i=0 ; i<(NUM_MIPS-1) ; i++)
|
|
d_scalemip[i] = basemip[i] * d_mipscale->value;
|
|
}
|
|
#if id386
|
|
{
|
|
if (r_filter->value == 1) // Fabien Sanglard's Kernel Filtering
|
|
{
|
|
if (d_subdiv16->value)
|
|
if (coloredlights == 2)
|
|
if (foguse)
|
|
d_drawspans = D_DrawSpans16_C_Dither;
|
|
else
|
|
d_drawspans = D_DrawSpans16_C_Dither_Filter;
|
|
else
|
|
d_drawspans = D_DrawSpans16_C_Filter;
|
|
else
|
|
if (coloredlights == 2)
|
|
if (foguse)
|
|
d_drawspans = D_DrawSpans16_C_Dither;
|
|
else
|
|
d_drawspans = D_DrawSpans16_C_Dither_Filter;
|
|
else
|
|
d_drawspans = D_DrawSpans8_C_Filter;
|
|
}
|
|
else
|
|
if (r_filter->value == 2) // Fabien Sanglard's Kernel Filtering tweaked to look slanted
|
|
{
|
|
if (d_subdiv16->value)
|
|
if (coloredlights == 2)
|
|
if (foguse)
|
|
d_drawspans = D_DrawSpans16_C_Dither;
|
|
else
|
|
d_drawspans = D_DrawSpans16_C_Dither_Filter;
|
|
else
|
|
d_drawspans = D_DrawSpans16_C_Filter_64;
|
|
else
|
|
if (coloredlights == 2)
|
|
if (foguse)
|
|
d_drawspans = D_DrawSpans16_C_Dither;
|
|
else
|
|
d_drawspans = D_DrawSpans16_C_Dither_Filter;
|
|
else
|
|
d_drawspans = D_DrawSpans16_C_Filter_64;
|
|
}
|
|
else
|
|
{
|
|
if (d_subdiv16->value)
|
|
if (coloredlights == 2)
|
|
d_drawspans = D_DrawSpans16_C_Dither;
|
|
else
|
|
if (foguse)
|
|
#ifdef id386fog
|
|
d_drawspans = D_DrawSpans16_C;
|
|
#else
|
|
d_drawspans = D_DrawSpans16_C;
|
|
#endif
|
|
else
|
|
d_drawspans = D_DrawSpans16;
|
|
else
|
|
if (foguse)
|
|
d_drawspans = D_DrawSpans16_C;
|
|
else
|
|
d_drawspans = D_DrawSpans8;
|
|
}
|
|
}
|
|
#else
|
|
if (d_subdiv16->value == 1)
|
|
d_drawspans = D_DrawSpans16_C;
|
|
// else if (d_subdiv16->value == 2)
|
|
// d_drawspans = D_DrawSpans32_C;
|
|
// else if (d_subdiv16->value == 3)
|
|
// d_drawspans = D_DrawSpans16_C_III;
|
|
else
|
|
d_drawspans = D_DrawSpans8;
|
|
#endif
|
|
|
|
d_aflatcolor = 0;
|
|
}
|
|
|
|
|
|
#ifdef EXPREND
|
|
|
|
extern int shadowpass;
|
|
void D_DrawDeferredSpans8_C (espan_t *pspan);
|
|
void D_SetupFrameExperimental (void)
|
|
{
|
|
int i;
|
|
|
|
if (shadowpass)
|
|
d_viewbuffer = (void *)(byte *)vid.shadowbuffer;
|
|
else
|
|
d_viewbuffer = (void *)(byte *)vid.buffer;
|
|
|
|
d_shadowbuffer = (void *)(byte *)vid.shadowbuffer;
|
|
|
|
screenwidth = vid.rowbytes;
|
|
|
|
|
|
d_roverwrapped = false;
|
|
d_initial_rover = sc_rover;
|
|
|
|
// leilei - easy mip detail cvar controls override the quakes
|
|
if (d_mipdetail->value){
|
|
d_minmip = d_mipdetail->value;
|
|
if (d_minmip > 3)
|
|
d_minmip = 3;
|
|
else if (d_minmip < 0)
|
|
d_minmip = 0;
|
|
|
|
for (i=0 ; i<(NUM_MIPS-1) ; i++)
|
|
d_scalemip[i] = basemip[i] * (d_mipdetail->value * 5);
|
|
}
|
|
|
|
else
|
|
{
|
|
d_minmip = d_mipcap->value;
|
|
if (reflectpass)
|
|
d_minmip = 2; // leilei - force blurry textures for reflections
|
|
if (d_minmip > 3)
|
|
d_minmip = 3;
|
|
else if (d_minmip < 0)
|
|
d_minmip = 0;
|
|
|
|
for (i=0 ; i<(NUM_MIPS-1) ; i++)
|
|
d_scalemip[i] = basemip[i] * d_mipscale->value;
|
|
}
|
|
|
|
|
|
// we only support these spans for the time being.
|
|
if (shadowpass)
|
|
d_drawspans= D_DrawSpans8;
|
|
else
|
|
d_drawspans = D_DrawDeferredSpans8_C;
|
|
|
|
d_aflatcolor = 0;
|
|
}
|
|
|
|
#endif
|
|
/*
|
|
===============
|
|
D_UpdateRects
|
|
===============
|
|
*/
|
|
void D_UpdateRects (vrect_t *prect)
|
|
{
|
|
|
|
// the software driver draws these directly to the vid buffer
|
|
|
|
UNUSED(prect);
|
|
}
|
|
|