quakeforge/libs/video/renderer/sw32/sw32_rsurf.c

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/*
sw32_rsurf.c
surface-related refresh code
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
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
static __attribute__ ((unused)) const char rcsid[] =
"$Id$";
#include "QF/render.h"
#include "QF/sys.h"
#include "compat.h"
#include "r_local.h"
drawsurf_t r_drawsurf;
int lightleft, sourcesstep, blocksize, sourcetstep;
int lightdelta, lightdeltastep;
int lightright, lightleftstep, lightrightstep, blockdivshift;
unsigned int blockdivmask;
byte *prowdestbase;
byte *psource;
int surfrowbytes; // used by ASM files
int *r_lightptr;
int r_stepback;
int r_lightwidth;
int r_numhblocks, r_numvblocks;
byte *r_source, *r_sourcemax;
static void (*surfmiptable8[4]) (void) = {
R_DrawSurfaceBlock8_mip0,
R_DrawSurfaceBlock8_mip1,
R_DrawSurfaceBlock8_mip2,
R_DrawSurfaceBlock8_mip3
};
static void (*surfmiptable16[4]) (void) = {
R_DrawSurfaceBlock16_mip0,
R_DrawSurfaceBlock16_mip1,
R_DrawSurfaceBlock16_mip2,
R_DrawSurfaceBlock16_mip3
};
static void (*surfmiptable32[4]) (void) = {
R_DrawSurfaceBlock32_mip0,
R_DrawSurfaceBlock32_mip1,
R_DrawSurfaceBlock32_mip2,
R_DrawSurfaceBlock32_mip3
};
int blocklights[34 * 34]; //FIXME make dynamic
static void
R_AddDynamicLights (void)
{
msurface_t *surf;
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unsigned int lnum;
int sd, td;
float dist, rad, minlight;
vec3_t impact, local, lightorigin;
int s, t;
int i;
int smax, tmax;
mtexinfo_t *tex;
surf = r_drawsurf.surf;
smax = (surf->extents[0] >> 4) + 1;
tmax = (surf->extents[1] >> 4) + 1;
tex = surf->texinfo;
for (lnum = 0; lnum < r_maxdlights; lnum++) {
if (!(surf->dlightbits & (1 << lnum)))
continue; // not lit by this light
VectorSubtract (r_dlights[lnum].origin, currententity->origin,
lightorigin);
rad = r_dlights[lnum].radius;
dist = DotProduct (lightorigin, surf->plane->normal) -
surf->plane->dist;
rad -= fabs (dist);
minlight = r_dlights[lnum].minlight;
if (rad < minlight)
continue;
minlight = rad - minlight;
for (i = 0; i < 3; i++)
impact[i] = lightorigin[i] - surf->plane->normal[i] * dist;
local[0] = DotProduct (impact, tex->vecs[0]) + tex->vecs[0][3];
local[1] = DotProduct (impact, tex->vecs[1]) + tex->vecs[1][3];
local[0] -= surf->texturemins[0];
local[1] -= surf->texturemins[1];
for (t = 0; t < tmax; t++) {
td = local[1] - t * 16;
if (td < 0)
td = -td;
for (s = 0; s < smax; s++) {
sd = local[0] - s * 16;
if (sd < 0)
sd = -sd;
if (sd > td)
dist = sd + (td >> 1);
else
dist = td + (sd >> 1);
if (dist < minlight)
blocklights[t * smax + s] += (rad - dist) * 256;
}
}
}
}
/*
R_BuildLightMap
Combine and scale multiple lightmaps into the 8.8 format in blocklights
*/
static void
R_BuildLightMap (void)
{
int smax, tmax;
int t;
int i, size;
byte *lightmap;
unsigned int scale;
int maps;
msurface_t *surf;
surf = r_drawsurf.surf;
smax = (surf->extents[0] >> 4) + 1;
tmax = (surf->extents[1] >> 4) + 1;
size = smax * tmax;
lightmap = surf->samples;
if (!r_worldentity.model->lightdata) {
for (i = 0; i < size; i++)
blocklights[i] = 0;
return;
}
// clear to ambient
for (i = 0; i < size; i++)
blocklights[i] = r_refdef.ambientlight << 8;
// add all the lightmaps
if (lightmap)
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for (maps = 0; maps < MAXLIGHTMAPS && surf->styles[maps] != 255; maps++) {
scale = r_drawsurf.lightadj[maps]; // 8.8 fraction
for (i = 0; i < size; i++)
blocklights[i] += lightmap[i] * scale;
lightmap += size; // skip to next lightmap
}
// add all the dynamic lights
if (surf->dlightframe == r_framecount)
R_AddDynamicLights ();
// LordHavoc: changed to positive (not inverse) lighting
for (i = 0; i < size; i++) {
t = bound(256, blocklights[i] >> (8 - VID_CBITS),
256 * (VID_GRADES - 1));
blocklights[i] = t;
}
/*
// bound, invert, and shift
for (i = 0; i < size; i++) {
t = (255 * 256 - blocklights[i]) >> (8 - VID_CBITS);
if (t < (1 << 6))
t = (1 << 6);
blocklights[i] = t;
}
*/
}
/*
R_TextureAnimation
Returns the proper texture for a given time and base texture
*/
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texture_t *
R_TextureAnimation (msurface_t *surf)
{
texture_t *base = surf->texinfo->texture;
int relative;
int count;
if (currententity->frame) {
if (base->alternate_anims)
base = base->alternate_anims;
}
if (!base->anim_total)
return base;
relative = (int) (r_realtime * 10) % base->anim_total;
count = 0;
while (base->anim_min > relative || base->anim_max <= relative) {
base = base->anim_next;
if (!base)
Sys_Error ("R_TextureAnimation: broken cycle");
if (++count > 100)
Sys_Error ("R_TextureAnimation: infinite cycle");
}
return base;
}
void
R_DrawSurface (void)
{
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byte *basetptr;
int smax, tmax, twidth;
int u;
int soffset, basetoffset, texwidth;
int horzblockstep;
byte *pcolumndest;
void (*pblockdrawer) (void);
texture_t *mt;
// calculate the lightings
R_BuildLightMap ();
surfrowbytes = r_drawsurf.rowbytes;
mt = r_drawsurf.texture;
r_source = (byte *) mt + mt->offsets[r_drawsurf.surfmip];
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// the fractional light values should range from 0 to
// (VID_GRADES - 1) << 16 from a source range of 0 - 255
texwidth = mt->width >> r_drawsurf.surfmip;
blocksize = 16 >> r_drawsurf.surfmip;
blockdivshift = 4 - r_drawsurf.surfmip;
blockdivmask = (1 << blockdivshift) - 1;
r_lightwidth = (r_drawsurf.surf->extents[0] >> 4) + 1;
r_numhblocks = r_drawsurf.surfwidth >> blockdivshift;
r_numvblocks = r_drawsurf.surfheight >> blockdivshift;
//==============================
smax = mt->width >> r_drawsurf.surfmip;
twidth = texwidth;
tmax = mt->height >> r_drawsurf.surfmip;
sourcetstep = texwidth;
r_stepback = tmax * twidth;
soffset = r_drawsurf.surf->texturemins[0];
basetoffset = r_drawsurf.surf->texturemins[1];
switch (r_pixbytes) {
case 1:
pblockdrawer = surfmiptable8[r_drawsurf.surfmip];
break;
case 2:
pblockdrawer = surfmiptable16[r_drawsurf.surfmip];
break;
case 4:
pblockdrawer = surfmiptable32[r_drawsurf.surfmip];
break;
default:
Sys_Error("R_DrawSurface: unsupported r_pixbytes %i", r_pixbytes);
pblockdrawer = NULL;
}
horzblockstep = blocksize * r_pixbytes;
r_sourcemax = r_source + (tmax * smax);
// << 16 components are to guarantee positive values for %
basetptr = r_source + (((basetoffset >> r_drawsurf.surfmip) +
(tmax << 16)) % tmax) * twidth;
soffset = (((soffset >> r_drawsurf.surfmip) + (smax << 16)) % smax);
pcolumndest = (byte *) r_drawsurf.surfdat;
for (u = 0; u < r_numhblocks; u++) {
r_lightptr = blocklights + u;
prowdestbase = pcolumndest;
psource = basetptr + soffset;
(*pblockdrawer) ();
soffset = soffset + blocksize;
if (soffset >= smax)
soffset = 0;
pcolumndest += horzblockstep;
}
}
//=============================================================================
void
R_DrawSurfaceBlock8_mip0 (void)
{
int v, i, b, lightstep, light;
unsigned char pix, *prowdest;
prowdest = prowdestbase;
for (v = 0; v < r_numvblocks; v++) {
// FIXME: make these locals?
// FIXME: use delta rather than both right and left, like ASM?
lightleft = r_lightptr[0];
lightright = r_lightptr[1];
r_lightptr += r_lightwidth;
lightleftstep = (r_lightptr[0] - lightleft) >> 4;
lightrightstep = (r_lightptr[1] - lightright) >> 4;
for (i = 0; i < 16; i++) {
lightstep = (lightleft - lightright) >> 4;
light = lightright;
for (b = 15; b >= 0; b--) {
pix = psource[b];
prowdest[b] = vid.colormap8[(light & 0xFF00) + pix];
light += lightstep;
}
psource += sourcetstep;
lightright += lightrightstep;
lightleft += lightleftstep;
prowdest += surfrowbytes;
}
if (psource >= r_sourcemax)
psource -= r_stepback;
}
}
void
R_DrawSurfaceBlock8_mip1 (void)
{
int v, i, b, lightstep, light;
unsigned char pix, *prowdest;
prowdest = prowdestbase;
for (v = 0; v < r_numvblocks; v++) {
// FIXME: make these locals?
// FIXME: use delta rather than both right and left, like ASM?
lightleft = r_lightptr[0];
lightright = r_lightptr[1];
r_lightptr += r_lightwidth;
lightleftstep = (r_lightptr[0] - lightleft) >> 3;
lightrightstep = (r_lightptr[1] - lightright) >> 3;
for (i = 0; i < 8; i++) {
lightstep = (lightleft - lightright) >> 3;
light = lightright;
for (b = 7; b >= 0; b--) {
pix = psource[b];
prowdest[b] = vid.colormap8[(light & 0xFF00) + pix];
light += lightstep;
}
psource += sourcetstep;
lightright += lightrightstep;
lightleft += lightleftstep;
prowdest += surfrowbytes;
}
if (psource >= r_sourcemax)
psource -= r_stepback;
}
}
void
R_DrawSurfaceBlock8_mip2 (void)
{
int v, i, b, lightstep, light;
unsigned char pix, *prowdest;
prowdest = prowdestbase;
for (v = 0; v < r_numvblocks; v++) {
// FIXME: make these locals?
// FIXME: use delta rather than both right and left, like ASM?
lightleft = r_lightptr[0];
lightright = r_lightptr[1];
r_lightptr += r_lightwidth;
lightleftstep = (r_lightptr[0] - lightleft) >> 2;
lightrightstep = (r_lightptr[1] - lightright) >> 2;
for (i = 0; i < 4; i++) {
lightstep = (lightleft - lightright) >> 2;
light = lightright;
for (b = 3; b >= 0; b--) {
pix = psource[b];
prowdest[b] = vid.colormap8[(light & 0xFF00) + pix];
light += lightstep;
}
psource += sourcetstep;
lightright += lightrightstep;
lightleft += lightleftstep;
prowdest += surfrowbytes;
}
if (psource >= r_sourcemax)
psource -= r_stepback;
}
}
void
R_DrawSurfaceBlock8_mip3 (void)
{
int v, i, b, lightstep, light;
unsigned char pix, *prowdest;
prowdest = prowdestbase;
for (v = 0; v < r_numvblocks; v++) {
// FIXME: make these locals?
// FIXME: use delta rather than both right and left, like ASM?
lightleft = r_lightptr[0];
lightright = r_lightptr[1];
r_lightptr += r_lightwidth;
lightleftstep = (r_lightptr[0] - lightleft) >> 1;
lightrightstep = (r_lightptr[1] - lightright) >> 1;
for (i = 0; i < 2; i++) {
lightstep = (lightleft - lightright) >> 1;
light = lightright;
for (b = 1; b >= 0; b--) {
pix = psource[b];
prowdest[b] = vid.colormap8[(light & 0xFF00) + pix];
light += lightstep;
}
psource += sourcetstep;
lightright += lightrightstep;
lightleft += lightleftstep;
prowdest += surfrowbytes;
}
if (psource >= r_sourcemax)
psource -= r_stepback;
}
}
void
R_DrawSurfaceBlock16_mip0 (void)
{
int k, v;
int lightstep, light;
unsigned short *prowdest;
prowdest = (unsigned short *) prowdestbase;
for (v = 0; v < r_numvblocks; v++)
{
lightleft = r_lightptr[0];
lightright = r_lightptr[1];
r_lightptr += r_lightwidth;
lightleftstep = (r_lightptr[0] - lightleft) >> 4;
lightrightstep = (r_lightptr[1] - lightright) >> 4;
for (k = 0; k < 16; k++)
{
light = lightleft;
lightstep = (lightright - lightleft) >> 4;
prowdest[0] = vid.colormap16[(light & 0xFF00) + psource[0]];
light += lightstep;
prowdest[1] = vid.colormap16[(light & 0xFF00) + psource[1]];
light += lightstep;
prowdest[2] = vid.colormap16[(light & 0xFF00) + psource[2]];
light += lightstep;
prowdest[3] = vid.colormap16[(light & 0xFF00) + psource[3]];
light += lightstep;
prowdest[4] = vid.colormap16[(light & 0xFF00) + psource[4]];
light += lightstep;
prowdest[5] = vid.colormap16[(light & 0xFF00) + psource[5]];
light += lightstep;
prowdest[6] = vid.colormap16[(light & 0xFF00) + psource[6]];
light += lightstep;
prowdest[7] = vid.colormap16[(light & 0xFF00) + psource[7]];
light += lightstep;
prowdest[8] = vid.colormap16[(light & 0xFF00) + psource[8]];
light += lightstep;
prowdest[9] = vid.colormap16[(light & 0xFF00) + psource[9]];
light += lightstep;
prowdest[10] = vid.colormap16[(light & 0xFF00) + psource[10]];
light += lightstep;
prowdest[11] = vid.colormap16[(light & 0xFF00) + psource[11]];
light += lightstep;
prowdest[12] = vid.colormap16[(light & 0xFF00) + psource[12]];
light += lightstep;
prowdest[13] = vid.colormap16[(light & 0xFF00) + psource[13]];
light += lightstep;
prowdest[14] = vid.colormap16[(light & 0xFF00) + psource[14]];
light += lightstep;
prowdest[15] = vid.colormap16[(light & 0xFF00) + psource[15]];
psource += sourcetstep;
lightright += lightrightstep;
lightleft += lightleftstep;
prowdest += (surfrowbytes >> 1);
}
if (psource >= r_sourcemax)
psource -= r_stepback;
}
}
void
R_DrawSurfaceBlock16_mip1 (void)
{
int k, v;
int lightstep, light;
unsigned short *prowdest;
prowdest = (unsigned short *) prowdestbase;
for (v = 0; v < r_numvblocks; v++)
{
lightleft = r_lightptr[0];
lightright = r_lightptr[1];
r_lightptr += r_lightwidth;
lightleftstep = (r_lightptr[0] - lightleft) >> 3;
lightrightstep = (r_lightptr[1] - lightright) >> 3;
for (k = 0; k < 8; k++)
{
light = lightleft;
lightstep = (lightright - lightleft) >> 3;
prowdest[0] = vid.colormap16[(light & 0xFF00) + psource[0]];
light += lightstep;
prowdest[1] = vid.colormap16[(light & 0xFF00) + psource[1]];
light += lightstep;
prowdest[2] = vid.colormap16[(light & 0xFF00) + psource[2]];
light += lightstep;
prowdest[3] = vid.colormap16[(light & 0xFF00) + psource[3]];
light += lightstep;
prowdest[4] = vid.colormap16[(light & 0xFF00) + psource[4]];
light += lightstep;
prowdest[5] = vid.colormap16[(light & 0xFF00) + psource[5]];
light += lightstep;
prowdest[6] = vid.colormap16[(light & 0xFF00) + psource[6]];
light += lightstep;
prowdest[7] = vid.colormap16[(light & 0xFF00) + psource[7]];
psource += sourcetstep;
lightright += lightrightstep;
lightleft += lightleftstep;
prowdest += (surfrowbytes >> 1);
}
if (psource >= r_sourcemax)
psource -= r_stepback;
}
}
void
R_DrawSurfaceBlock16_mip2 (void)
{
int k, v;
int lightstep, light;
unsigned short *prowdest;
prowdest = (unsigned short *) prowdestbase;
for (v = 0; v < r_numvblocks; v++)
{
lightleft = r_lightptr[0];
lightright = r_lightptr[1];
r_lightptr += r_lightwidth;
lightleftstep = (r_lightptr[0] - lightleft) >> 2;
lightrightstep = (r_lightptr[1] - lightright) >> 2;
for (k = 0; k < 4; k++)
{
light = lightleft;
lightstep = (lightright - lightleft) >> 2;
prowdest[0] = vid.colormap16[(light & 0xFF00) + psource[0]];
light += lightstep;
prowdest[1] = vid.colormap16[(light & 0xFF00) + psource[1]];
light += lightstep;
prowdest[2] = vid.colormap16[(light & 0xFF00) + psource[2]];
light += lightstep;
prowdest[3] = vid.colormap16[(light & 0xFF00) + psource[3]];
psource += sourcetstep;
lightright += lightrightstep;
lightleft += lightleftstep;
prowdest += (surfrowbytes >> 1);
}
if (psource >= r_sourcemax)
psource -= r_stepback;
}
}
void
R_DrawSurfaceBlock16_mip3 (void)
{
int v;
unsigned short *prowdest;
prowdest = (unsigned short *) prowdestbase;
for (v = 0; v < r_numvblocks; v++)
{
lightleft = r_lightptr[0];
lightright = r_lightptr[1];
r_lightptr += r_lightwidth;
lightleftstep = (r_lightptr[0] - lightleft) >> 1;
lightrightstep = (r_lightptr[1] - lightright) >> 1;
prowdest[0] = vid.colormap16[(lightleft & 0xFF00) + psource[0]];
prowdest[1] = vid.colormap16[(((lightleft + lightright) >> 1) &
0xFF00) + psource[1]];
psource += sourcetstep;
lightright += lightrightstep;
lightleft += lightleftstep;
prowdest += (surfrowbytes >> 1);
prowdest[0] = vid.colormap16[(lightleft & 0xFF00) + psource[0]];
prowdest[1] = vid.colormap16[(((lightleft + lightright) >> 1) &
0xFF00) + psource[1]];
psource += sourcetstep;
prowdest += (surfrowbytes >> 1);
if (psource >= r_sourcemax)
psource -= r_stepback;
}
}
void
R_DrawSurfaceBlock32_mip0 (void)
{
int k, v;
int lightstep, light;
unsigned int *prowdest;
prowdest = (unsigned int *) prowdestbase;
for (v = 0; v < r_numvblocks; v++)
{
lightleft = r_lightptr[0];
lightright = r_lightptr[1];
r_lightptr += r_lightwidth;
lightleftstep = (r_lightptr[0] - lightleft) >> 4;
lightrightstep = (r_lightptr[1] - lightright) >> 4;
for (k = 0; k < 16; k++)
{
light = lightleft;
lightstep = (lightright - lightleft) >> 4;
prowdest[0] = vid.colormap32[(light & 0xFF00) + psource[0]];
light += lightstep;
prowdest[1] = vid.colormap32[(light & 0xFF00) + psource[1]];
light += lightstep;
prowdest[2] = vid.colormap32[(light & 0xFF00) + psource[2]];
light += lightstep;
prowdest[3] = vid.colormap32[(light & 0xFF00) + psource[3]];
light += lightstep;
prowdest[4] = vid.colormap32[(light & 0xFF00) + psource[4]];
light += lightstep;
prowdest[5] = vid.colormap32[(light & 0xFF00) + psource[5]];
light += lightstep;
prowdest[6] = vid.colormap32[(light & 0xFF00) + psource[6]];
light += lightstep;
prowdest[7] = vid.colormap32[(light & 0xFF00) + psource[7]];
light += lightstep;
prowdest[8] = vid.colormap32[(light & 0xFF00) + psource[8]];
light += lightstep;
prowdest[9] = vid.colormap32[(light & 0xFF00) + psource[9]];
light += lightstep;
prowdest[10] = vid.colormap32[(light & 0xFF00) + psource[10]];
light += lightstep;
prowdest[11] = vid.colormap32[(light & 0xFF00) + psource[11]];
light += lightstep;
prowdest[12] = vid.colormap32[(light & 0xFF00) + psource[12]];
light += lightstep;
prowdest[13] = vid.colormap32[(light & 0xFF00) + psource[13]];
light += lightstep;
prowdest[14] = vid.colormap32[(light & 0xFF00) + psource[14]];
light += lightstep;
prowdest[15] = vid.colormap32[(light & 0xFF00) + psource[15]];
psource += sourcetstep;
lightright += lightrightstep;
lightleft += lightleftstep;
prowdest += (surfrowbytes >> 2);
}
if (psource >= r_sourcemax)
psource -= r_stepback;
}
}
void
R_DrawSurfaceBlock32_mip1 (void)
{
int k, v;
int lightstep, light;
unsigned int *prowdest;
prowdest = (unsigned int *) prowdestbase;
for (v = 0; v < r_numvblocks; v++)
{
lightleft = r_lightptr[0];
lightright = r_lightptr[1];
r_lightptr += r_lightwidth;
lightleftstep = (r_lightptr[0] - lightleft) >> 3;
lightrightstep = (r_lightptr[1] - lightright) >> 3;
for (k = 0; k < 8; k++)
{
light = lightleft;
lightstep = (lightright - lightleft) >> 3;
prowdest[0] = vid.colormap32[(light & 0xFF00) + psource[0]];
light += lightstep;
prowdest[1] = vid.colormap32[(light & 0xFF00) + psource[1]];
light += lightstep;
prowdest[2] = vid.colormap32[(light & 0xFF00) + psource[2]];
light += lightstep;
prowdest[3] = vid.colormap32[(light & 0xFF00) + psource[3]];
light += lightstep;
prowdest[4] = vid.colormap32[(light & 0xFF00) + psource[4]];
light += lightstep;
prowdest[5] = vid.colormap32[(light & 0xFF00) + psource[5]];
light += lightstep;
prowdest[6] = vid.colormap32[(light & 0xFF00) + psource[6]];
light += lightstep;
prowdest[7] = vid.colormap32[(light & 0xFF00) + psource[7]];
psource += sourcetstep;
lightright += lightrightstep;
lightleft += lightleftstep;
prowdest += (surfrowbytes >> 2);
}
if (psource >= r_sourcemax)
psource -= r_stepback;
}
}
void
R_DrawSurfaceBlock32_mip2 (void)
{
int k, v;
int lightstep, light;
unsigned int *prowdest;
prowdest = (unsigned int *) prowdestbase;
for (v = 0; v < r_numvblocks; v++)
{
lightleft = r_lightptr[0];
lightright = r_lightptr[1];
r_lightptr += r_lightwidth;
lightleftstep = (r_lightptr[0] - lightleft) >> 2;
lightrightstep = (r_lightptr[1] - lightright) >> 2;
for (k = 0; k < 4; k++)
{
light = lightleft;
lightstep = (lightright - lightleft) >> 2;
prowdest[0] = vid.colormap32[(light & 0xFF00) + psource[0]];
light += lightstep;
prowdest[1] = vid.colormap32[(light & 0xFF00) + psource[1]];
light += lightstep;
prowdest[2] = vid.colormap32[(light & 0xFF00) + psource[2]];
light += lightstep;
prowdest[3] = vid.colormap32[(light & 0xFF00) + psource[3]];
psource += sourcetstep;
lightright += lightrightstep;
lightleft += lightleftstep;
prowdest += (surfrowbytes >> 2);
}
if (psource >= r_sourcemax)
psource -= r_stepback;
}
}
void
R_DrawSurfaceBlock32_mip3 (void)
{
int v;
unsigned int *prowdest;
prowdest = (unsigned int *) prowdestbase;
for (v = 0; v < r_numvblocks; v++)
{
lightleft = r_lightptr[0];
lightright = r_lightptr[1];
r_lightptr += r_lightwidth;
lightleftstep = (r_lightptr[0] - lightleft) >> 1;
lightrightstep = (r_lightptr[1] - lightright) >> 1;
prowdest[0] = vid.colormap32[(lightleft & 0xFF00) + psource[0]];
prowdest[1] = vid.colormap32[(((lightleft + lightright) >> 1) &
0xFF00) + psource[1]];
psource += sourcetstep;
lightright += lightrightstep;
lightleft += lightleftstep;
prowdest += (surfrowbytes >> 2);
prowdest[0] = vid.colormap32[(lightleft & 0xFF00) + psource[0]];
prowdest[1] = vid.colormap32[(((lightleft + lightright) >> 1) &
0xFF00) + psource[1]];
psource += sourcetstep;
lightright += lightrightstep;
lightleft += lightleftstep;
prowdest += (surfrowbytes >> 2);
if (psource >= r_sourcemax)
psource -= r_stepback;
}
}
/*
void
R_DrawSurfaceBlock32 (void)
{
int k, v;
int lightstep, light;
unsigned int *prowdest;
prowdest = prowdestbase;
for (v = 0; v < r_numvblocks; v++) {
lightleft = r_lightptr[0];
lightright = r_lightptr[1];
r_lightptr += r_lightwidth;
lightleftstep = (r_lightptr[0] - lightleft) >> blockdivshift;
lightrightstep = (r_lightptr[1] - lightright) >> blockdivshift;
for (k = 0; k < blocksize; k++) {
int b;
lightstep = (lightright - lightleft) >> blockdivshift;
light = lightleft;
for (b = 0;b < blocksize;b++, light += lightstep)
prowdest[b] = vid.colormap32[(light & 0xFF00) + psource[b]];
psource += sourcetstep;
lightright += lightrightstep;
lightleft += lightleftstep;
prowdest += (surfrowbytes >> 2);
}
if (psource >= r_sourcemax)
psource -= r_stepback;
}
}
*/
void
R_SurfacePatch (void)
{
}