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fteqw/engine/sw/r_surf.c

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/*
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.
*/
// r_surf.c: surface-related refresh code
#include "quakedef.h"
#include "r_local.h"
#ifdef SWSTAINS
#include "d_local.h"
#endif
//#define MAX_SWDECALS (1<<8)
#if MAX_SWDECALS
decal_t decals[MAX_SWDECALS];
int nextdecal;
void SWR_AddDecal(vec3_t org);
#endif
drawsurf_t r_drawsurf;
int lightleft, sourcesstep, blocksize, sourcetstep;
int lightdelta, lightdeltastep;
int lightright, lightleftstep, lightrightstep, blockdivshift;
unsigned blockdivmask;
void *prowdestbase;
unsigned char *pbasesource;
int surfrowbytes; // used by ASM files
unsigned *r_lightptr;
int r_stepback;
int r_lightwidth;
int r_numhblocks, r_numvblocks;
unsigned char *r_source, *r_sourcemax;
void R_DrawSurfaceBlock8_mip0 (void);
void R_DrawSurfaceBlock8_mip1 (void);
void R_DrawSurfaceBlock8_mip2 (void);
void R_DrawSurfaceBlock8_mip3 (void);
void R_DrawSurfaceBlock16From8 (void);
void R_DrawSurfaceBlock32From8 (void);
void R_DrawSurfaceBlock32From8Lit (void);
void R_DrawSurfaceBlock32From32Lit (void);
static void (*surfmiptable[4])(void) = {
R_DrawSurfaceBlock8_mip0,
R_DrawSurfaceBlock8_mip1,
R_DrawSurfaceBlock8_mip2,
R_DrawSurfaceBlock8_mip3
};
unsigned blocklights[18*18*3];
#ifdef SWSTAINS
extern cvar_t r_stains;
extern cvar_t r_stainfadetime;
extern cvar_t r_stainfadeammount;
#define LMBLOCK_WIDTH 128
#define LMBLOCK_HEIGHT 128
#define MAX_LIGHTMAPS 64
typedef unsigned char stmap;
stmap stainmaps[MAX_LIGHTMAPS*LMBLOCK_WIDTH*LMBLOCK_HEIGHT]; //added to lightmap for added (hopefully) speed.
int allocated[MAX_LIGHTMAPS][LMBLOCK_WIDTH];
//radius, x y z, a
void SWR_StainSurf (msurface_t *surf, float *parms)
{
int sd, td;
float dist, rad, minlight;
vec3_t impact, local;
int s, t;
int i;
int smax, tmax;
float amm;
mtexinfo_t *tex;
stmap *stainbase;
smax = (surf->extents[0]>>4)+1;
tmax = (surf->extents[1]>>4)+1;
tex = surf->texinfo;
stainbase = stainmaps + surf->lightmaptexturenum*LMBLOCK_WIDTH*LMBLOCK_HEIGHT;
stainbase += (surf->light_t * LMBLOCK_WIDTH + surf->light_s);
rad = *parms;
dist = DotProduct ((parms+1), surf->plane->normal) - surf->plane->dist;
rad -= fabs(dist);
minlight = 0;
if (rad < minlight) //not hit
return;
minlight = rad - minlight;
for (i=0 ; i<3 ; i++)
{
impact[i] = (parms+1)[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)
{
amm = stainbase[(s)] - (dist - rad)*parms[4];
stainbase[(s)] = bound(0, amm, 255);
surf->stained = true;
}
}
stainbase += LMBLOCK_WIDTH;
}
if (surf->stained)
{
for (i = 0; i < 4; i++)
if (surf->cachespots[i])
surf->cachespots[i]->dlight = -1;
}
}
//combination of R_AddDynamicLights and R_MarkLights
void SWR_Q1BSP_StainNode (mnode_t *node, float *parms)
{
mplane_t *splitplane;
float dist;
msurface_t *surf;
int i;
if (node->contents < 0)
return;
splitplane = node->plane;
dist = DotProduct ((parms+1), splitplane->normal) - splitplane->dist;
if (dist > (*parms))
{
SWR_Q1BSP_StainNode (node->children[0], parms);
return;
}
if (dist < (-*parms))
{
SWR_Q1BSP_StainNode (node->children[1], parms);
return;
}
// mark the polygons
surf = cl.worldmodel->surfaces + node->firstsurface;
for (i=0 ; i<node->numsurfaces ; i++, surf++)
{
if (surf->flags&~(SURF_DRAWTURB|SURF_PLANEBACK))
continue;
SWR_StainSurf(surf, parms);
}
SWR_Q1BSP_StainNode (node->children[0], parms);
SWR_Q1BSP_StainNode (node->children[1], parms);
}
void SWR_AddStain(vec3_t org, float red, float green, float blue, float radius)
{
physent_t *pe;
int i;
float parms[5];
#if MAX_SWDECALS
SWR_AddDecal(org);
#endif
if (red != green && red != blue) //sw only does luminance of stain maps
return; //a mix would look wrong.
if (!r_stains.value || !cl.worldmodel)
return;
parms[0] = radius;
parms[1] = org[0];
parms[2] = org[1];
parms[3] = org[2];
parms[4] = (red + green + blue)/3;
cl.worldmodel->funcs.StainNode(cl.worldmodel->nodes+cl.worldmodel->hulls[0].firstclipnode, parms);
//now stain bsp models other than world.
for (i=1 ; i< pmove.numphysent ; i++) //0 is world...
{
pe = &pmove.physents[i];
if (pe->model && pe->model->surfaces == cl.worldmodel->surfaces)
{
parms[1] = org[0] - pe->origin[0];
parms[2] = org[1] - pe->origin[1];
parms[3] = org[2] - pe->origin[2];
pe->model->funcs.StainNode(pe->model->nodes+pe->model->hulls[0].firstclipnode, parms);
}
}
}
void SWR_WipeStains(void)
{
memset(stainmaps, 255, sizeof(stainmaps));
}
void SWR_LessenStains(void)
{
int i, j;
msurface_t *surf;
int smax, tmax;
int s, t;
stmap *stain;
int stride;
int ammount, limit;
static float time;
if (!r_stains.value || cl.paused)
{
time = 0;
return;
}
time += host_frametime;
if (time < r_stainfadetime.value)
return;
time-=r_stainfadetime.value;
ammount = r_stainfadeammount.value;
limit = 255 - ammount;
surf = cl.worldmodel->surfaces;
for (i=0 ; i<cl.worldmodel->numsurfaces ; i++, surf++)
{
if (surf->stained)
{
for (j = 0; j < 4; j++)
if (surf->cachespots[j])
surf->cachespots[j]->dlight = -1;
smax = (surf->extents[0]>>4)+1;
tmax = (surf->extents[1]>>4)+1;
stain = stainmaps + surf->lightmaptexturenum*LMBLOCK_WIDTH*LMBLOCK_HEIGHT;
stain += (surf->light_t * LMBLOCK_WIDTH + surf->light_s);
stride = (LMBLOCK_WIDTH-smax);
surf->stained = false;
for (t = 0 ; t<tmax ; t++, stain+=stride)
{
for (s=0 ; s<smax ; s++)
{
if (*stain < limit)
{
*stain += ammount;
surf->stained=true;
}
else //reset to 255.
*stain = 255;
stain++;
}
}
}
}
/*
int i;
msurface_t *surf;
if (rand()&31)
return;
surf = cl.worldmodel->surfaces;
for (i=0 ; i<cl.worldmodel->numsurfaces ; i++, surf++)
{
if (surf->stained)
{
surf->stained=2;
}
}
*/
}
// returns a texture number and the position inside it
int SWAllocBlock (int w, int h, int *x, int *y)
{
int i, j;
int best, best2;
int texnum;
if (!w || !h)
Sys_Error ("AllocBlock: bad size");
for (texnum=0 ; texnum<MAX_LIGHTMAPS ; texnum++)
{
best = LMBLOCK_HEIGHT;
for (i=0 ; i<LMBLOCK_WIDTH-w ; i++)
{
best2 = 0;
for (j=0 ; j<w ; j++)
{
if (allocated[texnum][i+j] >= best)
break;
if (allocated[texnum][i+j] > best2)
best2 = allocated[texnum][i+j];
}
if (j == w)
{ // this is a valid spot
*x = i;
*y = best = best2;
}
}
if (best + h > LMBLOCK_HEIGHT)
continue;
for (i=0 ; i<w ; i++)
allocated[texnum][*x + i] = best + h;
return texnum;
}
Sys_Error ("AllocBlock: full");
return 0;
}
void SWR_CreateSurfaceLightmap (msurface_t *surf)
{
int smax, tmax;
if (surf->flags & (SURF_DRAWSKY|SURF_DRAWTURB))
return;
if (surf->texinfo->flags & (TEX_SPECIAL))
return;
smax = (surf->extents[0]>>4)+1;
tmax = (surf->extents[1]>>4)+1;
surf->lightmaptexturenum = SWAllocBlock (smax, tmax, &surf->light_s, &surf->light_t);
}
void SWR_BuildLightmaps(void)
{
int i;
msurface_t *surf;
memset(allocated, 0, sizeof(allocated));
SWR_WipeStains();
surf = cl.worldmodel->surfaces;
for (i=0 ; i<cl.worldmodel->numsurfaces ; i++, surf++)
{
// if ( cl.worldmodel->surfaces[i].flags & SURF_DRAWSKY )
// P_EmitSkyEffectTris(cl.worldmodel, &cl.worldmodel->surfaces[i]);
SWR_CreateSurfaceLightmap(surf);
}
}
#endif
//retrieves the next decal to be used, unlinking if needed.
#if MAX_SWDECALS
decal_t *R_GetFreeDecal(void)
{
decal_t *dec = &decals[nextdecal];
if (dec->owner)
{ //already in use.
if (dec->prev)
dec->prev->next = dec->next;
else
dec->owner->decal = dec->next;
if (dec->next)
dec->next->prev = dec->prev;
dec->owner->cached_dlight = -1; //get the surface to redraw.
}
nextdecal = (nextdecal+1)&(MAX_SWDECALS-1);
memset(dec, 0, sizeof(decal_t));
return dec;
}
#endif
void R_WipeDecals(void)
{
#if MAX_SWDECALS
int i;
memset(decals, 0, sizeof(decals));
for (i=0 ; i<cl.worldmodel->numsurfaces ; i++)
cl.worldmodel->surfaces[i].decal = NULL;
#endif
}
#if MAX_SWDECALS
static vec3_t decalorg;
static float decalradius;
void SWR_AddSurfDecal (msurface_t *surf)
{
int sd, td;
float dist, rad, minlight;
vec3_t impact, local;
int s, t;
int i;
int smax, tmax;
float amm;
mtexinfo_t *tex;
decal_t *dec;
decal_t *prev;
smax = (surf->extents[0]>>4)+1;
tmax = (surf->extents[1]>>4)+1;
tex = surf->texinfo;
rad = decalradius;
dist = DotProduct (decalorg, surf->plane->normal) - surf->plane->dist;
rad -= fabs(dist);
minlight = 0;
if (rad < minlight) //not hit
return;
minlight = rad - minlight;
for (i=0 ; i<3 ; i++)
{
impact[i] = decalorg[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];
dec = R_GetFreeDecal();
if (surf->decal) //add to the end of the linked list.
{
prev = surf->decal;
while(prev->next)
prev = prev->next;
prev->next = dec;
dec->prev = prev;
}
else
surf->decal = dec; //no list yet
dec->owner = surf;
surf->cached_dlight = -1;
dec->xpos = local[0];
dec->ypos = local[1];
}
void SWR_Q1BSP_AddNodeDecal (mnode_t *node)
{
mplane_t *splitplane;
float dist;
msurface_t *surf;
int i;
if (node->contents < 0)
return;
splitplane = node->plane;
dist = DotProduct (decalorg, splitplane->normal) - splitplane->dist;
if (dist > (decalradius))
{
SWR_Q1BSP_AddNodeDecal (node->children[0]);
return;
}
if (dist < (-decalradius))
{
SWR_Q1BSP_AddNodeDecal (node->children[1]);
return;
}
// mark the polygons
surf = cl.worldmodel->surfaces + node->firstsurface;
for (i=0 ; i<node->numsurfaces ; i++, surf++)
{
if (surf->flags&~(SURF_DRAWTURB|SURF_PLANEBACK))
continue;
SWR_AddSurfDecal(surf);
}
SWR_Q1BSP_AddNodeDecal (node->children[0]);
SWR_Q1BSP_AddNodeDecal (node->children[1]);
}
void SWR_AddDecal(vec3_t org)
{
// VectorCopy(org, decalorg);
// decalradius = 320;
// SWR_Q1BSP_AddNodeDecal(cl.worldmodel->nodes+cl.worldmodel->hulls[0].firstclipnode);
}
void SWR_DrawDecal8(decal_t *dec)
{
mpic_t *srcpic = (mpic_t *)Draw_SafeCachePic ("gfx/conback.lmp");
qbyte *srcimg = srcpic->data;
int srcw=16, srch=16;
int s, t;
int stride; //horizontal pixels to copy
int lines; //vertical pixels to copy
qbyte *dest = r_drawsurf.surfdat;
int dw = r_drawsurf.surfwidth, dh = r_drawsurf.surfheight;
stride = dw;
lines = dh;
s=0;t=0;
/*
s = dec->xpos - srcw/2;
t = dec->ypos - srch/2;
if (s < 0)
{
stride-=s;
s = 0;
}
if (t < 0)
{
stride-=t;
t = 0;
}
*/
//s and t are at the top left of the image.
dest += s; //align to the left
srcimg += s;
for (t = 0; t < lines; t++)
{
for (s = 0; s < stride; s++)
{
dest[s] = srcimg[s];
}
dest += dw;
srcimg += srcw;
}
/*
pixel_t *surfdat; // destination for generated surface
int rowbytes; // destination logical width in bytes
msurface_t *surf; // description for surface to generate
fixed8_t lightadj[MAXLIGHTMAPS];
// adjust for lightmap levels for dynamic lighting
texture_t *texture; // corrected for animating textures
int surfmip; // mipmapped ratio of surface texels / world pixels
int surfwidth; // in mipmapped texels
int surfheight; // in mipmapped texels
*/
}
#endif
/*
===============
R_AddDynamicLights
===============
*/
void SWR_AddDynamicLights (void)
{
msurface_t *surf;
int lnum;
int sd, td;
float dist, rad, minlight;
vec3_t impact, local;
int s, t;
int i;
int smax, tmax;
mtexinfo_t *tex;
float a;
surf = r_drawsurf.surf;
smax = (surf->extents[0]>>4)+1;
tmax = (surf->extents[1]>>4)+1;
tex = surf->texinfo;
for (lnum=0 ; lnum<MAX_SWLIGHTS ; lnum++)
{
if ( !(surf->dlightbits & (1<<lnum) ) )
continue; // not lit by this light
rad = cl_dlights[lnum].radius;
dist = DotProduct (cl_dlights[lnum].origin, surf->plane->normal) -
surf->plane->dist;
rad -= fabs(dist);
minlight = cl_dlights[lnum].minlight;
if (rad < minlight)
continue;
minlight = rad - minlight;
a = 256*(cl_dlights[lnum].color[0]*1.5 + cl_dlights[lnum].color[1]*2.95 + cl_dlights[lnum].color[2]*0.55);
for (i=0 ; i<3 ; i++)
{
impact[i] = cl_dlights[lnum].origin[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)*a;
}
}
}
}
void SWR_AddDynamicLightsRGB (void)
{
msurface_t *surf;
int lnum;
int sd, td;
float dist, rad, minlight, r, g, b;
vec3_t impact, local;
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<MAX_SWLIGHTS ; lnum++)
{
if ( !(surf->dlightbits & (1<<lnum) ) )
continue; // not lit by this light
rad = cl_dlights[lnum].radius;
dist = DotProduct (cl_dlights[lnum].origin, surf->plane->normal) -
surf->plane->dist;
rad -= fabs(dist);
minlight = cl_dlights[lnum].minlight;
if (rad < minlight)
continue;
minlight = rad - minlight;
for (i=0 ; i<3 ; i++)
{
impact[i] = cl_dlights[lnum].origin[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];
r = cl_dlights[lnum].color[0]*3*256;
g = cl_dlights[lnum].color[1]*3*256;
b = cl_dlights[lnum].color[2]*3*256;
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)*3] += (rad - dist)*r;
blocklights[(t*smax + s)*3+1] += (rad - dist)*g;
blocklights[(t*smax + s)*3+2] += (rad - dist)*b;
}
}
}
}
}
/*
===============
R_BuildLightMap
Combine and scale multiple lightmaps into the 8.8 format in blocklights
===============
*/
void SWR_BuildLightMap (void)
{
int smax, tmax;
int t;
int i, size;
qbyte *lightmap;
unsigned 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_fullbright.value || */ !cl.worldmodel->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)
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)
SWR_AddDynamicLights ();
#ifdef SWSTAINS
if (surf->stained)
{
stmap *stain;
int sstride;
int x, y;
stain = stainmaps + surf->lightmaptexturenum*LMBLOCK_WIDTH*LMBLOCK_HEIGHT;
stain += (surf->light_t * LMBLOCK_WIDTH + surf->light_s);
sstride = LMBLOCK_WIDTH - smax;
i=0;
for (x = 0; x < tmax; x++, stain+=sstride)
{
for (y = 0; y < smax; y++, i++, stain++)
{
t = (255*256*256-127*256-(int)blocklights[i]*(*stain)) >> (16 - VID_CBITS);
if (t < (1 << 6))
t = (1 << 6);
blocklights[i] = t;
}
}
return;
}
#endif
// bound, invert, and shift
for (i=0 ; i<size ; i++)
{
t = (255*256 - (int)blocklights[i]) >> (8 - VID_CBITS);
if (t < (1 << 6))
t = (1 << 6);
blocklights[i] = t;
}
}
void SWR_BuildLightMapRGB (void)
{
int smax, tmax;
int i, size;
qbyte *lightmap;
unsigned scale;
int maps;
msurface_t *surf;
int r,g,b, cr, cg, cb;
surf = r_drawsurf.surf;
smax = (surf->extents[0]>>4)+1;
tmax = (surf->extents[1]>>4)+1;
size = smax*tmax*3;
lightmap = surf->samples;
if (/* r_fullbright.value || */ !cl.worldmodel->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)
for (maps = 0 ; maps < MAXLIGHTMAPS && surf->styles[maps] != 255 ;
maps++)
{
scale = r_drawsurf.lightadj[maps]; // 8.8 fraction
for (i=0 ; i<size ; i+=3)
{
blocklights[i] += lightmap[i] * scale;
blocklights[i+1] += lightmap[i+1] * scale;
blocklights[i+2] += lightmap[i+2] * scale;
}
lightmap += size; // skip to next lightmap
}
// add all the dynamic lights
if (surf->dlightframe == r_framecount)
SWR_AddDynamicLightsRGB ();
#ifdef SWSTAINS
if (surf->stained)
{
stmap *stain;
int sstride;
int x, y;
stain = stainmaps + surf->lightmaptexturenum*LMBLOCK_WIDTH*LMBLOCK_HEIGHT;
stain += (surf->light_t * LMBLOCK_WIDTH + surf->light_s);
sstride = LMBLOCK_WIDTH - smax;
i=0;
for (x = 0; x < tmax; x++, stain+=sstride)
{
for (y = 0; y < smax; y++, i+=3, stain++)
{
r = (255*256*256-127*256-(int)blocklights[i]*(*stain)) >> 16 - VID_CBITS;
g = (255*256*256-127*256-(int)blocklights[i+1]*(*stain)) >> 16 - VID_CBITS;
b = (255*256*256-127*256-(int)blocklights[i+2]*(*stain)) >> 16 - VID_CBITS;
#define MINL (1<<6)
#define MAXL ((255*256) >> (8 - VID_CBITS))
cr = 0;
cg = 0;
cb = 0;
if (r < MINL)
{
cg += (MINL-r);
cb += (MINL-r);
r = MINL;
}
if (g < MINL)
{
cr += (MINL-g);
cb += (MINL-g);
g = MINL;
}
if (b < MINL)
{
cg += (MINL-b);
cr += (MINL-b);
b = MINL;
}
if (cr + r < MINL)
blocklights[i] = MINL;
else if (cr + r > MAXL)
blocklights[i] = MAXL;
else
blocklights[i] = cr+r;
if (cg + g < MINL)
blocklights[i+1] = MINL;
else if (cg + g > MAXL)
blocklights[i+1] = MAXL;
else
blocklights[i+1] = cg+g;
if (cb + b < MINL)
blocklights[i+2] = MINL;
else if (cb + b > MAXL)
blocklights[i+2] = MAXL;
else
blocklights[i+2] = cb+b;
}
}
return;
}
#endif
// bound, invert, and shift
for (i=0 ; i<size ; i+=3) //this rather bulky and overcomplicated formula allows too much red to reduce the green+blue to give a more satisfying glow.
{
r = (255*256-(int)blocklights[i]) >> (8 - VID_CBITS);
g = (255*256-(int)blocklights[i+1]) >> (8 - VID_CBITS);
b = (255*256-(int)blocklights[i+2]) >> (8 - VID_CBITS);
#define MINL (1<<6)
#define MAXL ((255*256) >> (8 - VID_CBITS))
cr = 0;
cg = 0;
cb = 0;
if (r < MINL)
{
cg += (MINL-r);
cb += (MINL-r);
r = MINL;
}
if (g < MINL)
{
cr += (MINL-g);
cb += (MINL-g);
g = MINL;
}
if (b < MINL)
{
cg += (MINL-b);
cr += (MINL-b);
b = MINL;
}
if (cr + r < MINL)
blocklights[i] = MINL;
else if (cr + r > MAXL)
blocklights[i] = MAXL;
else
blocklights[i] = cr+r;
if (cg + g < MINL)
blocklights[i+1] = MINL;
else if (cg + g > MAXL)
blocklights[i+1] = MAXL;
else
blocklights[i+1] = cg+g;
if (cb + b < MINL)
blocklights[i+2] = MINL;
else if (cb + b > MAXL)
blocklights[i+2] = MAXL;
else
blocklights[i+2] = cb+b;
}
}
/*
===============
R_TextureAnimation
Returns the proper texture for a given time and base texture
===============
*/
texture_t *SWR_TextureAnimation (texture_t *base)
{
int reletive;
int count;
if (currententity->frame)
{
if (base->alternate_anims)
base = base->alternate_anims;
}
if (!base->anim_total)
return base;
reletive = (int)(cl.time*10) % base->anim_total;
count = 0;
while (base->anim_min > reletive || base->anim_max <= reletive)
{
base = base->anim_next;
if (!base)
Sys_Error ("R_TextureAnimation: broken cycle");
if (++count > 100)
Sys_Error ("R_TextureAnimation: infinite cycle");
}
return base;
}
/*
===============
R_DrawSurface
===============
*/
void R_DrawSurface (void)
{
unsigned char *basetptr;
int smax, tmax, twidth;
int u;
int soffset, basetoffset, texwidth;
int horzblockstep;
unsigned char *pcolumndest;
void (*pblockdrawer)(void);
texture_t *mt;
#if MAX_SWDECALS
decal_t *dec;
#endif
// calculate the lightings
SWR_BuildLightMap ();
surfrowbytes = r_drawsurf.rowbytes;
mt = r_drawsurf.texture;
r_source = (qbyte *)mt + mt->offsets[r_drawsurf.surfmip];
// 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;
//==============================
if (r_pixbytes == 1 || r_pixbytes == 4) //if we are using 4, textures are stored as 1 and expanded acording to palette
{
pblockdrawer = surfmiptable[r_drawsurf.surfmip];
// TODO: only needs to be set when there is a display settings change
horzblockstep = blocksize;
}
else
{
pblockdrawer = R_DrawSurfaceBlock16From8;//16bit rendering uses 16bit caches.
// TODO: only needs to be set when there is a display settings change
horzblockstep = blocksize << 1;
}
smax = mt->width >> r_drawsurf.surfmip;
twidth = texwidth;
tmax = mt->height >> r_drawsurf.surfmip;
sourcetstep = texwidth;
r_stepback = tmax * twidth;
r_sourcemax = r_source + (tmax * smax);
soffset = r_drawsurf.surf->texturemins[0];
basetoffset = r_drawsurf.surf->texturemins[1];
// << 16 components are to guarantee positive values for %
soffset = ((soffset >> r_drawsurf.surfmip) + (smax << 16)) % smax;
basetptr = &r_source[((((basetoffset >> r_drawsurf.surfmip)
+ (tmax << 16)) % tmax) * twidth)];
pcolumndest = r_drawsurf.surfdat;
for (u=0 ; u<r_numhblocks; u++)
{
r_lightptr = blocklights + u;
prowdestbase = pcolumndest;
pbasesource = basetptr + soffset;
(*pblockdrawer)();
soffset = soffset + blocksize;
if (soffset >= smax)
soffset = 0;
pcolumndest += horzblockstep;
}
#if MAX_SWDECALS
if (r_drawsurf.surf->decal && !r_drawsurf.surfmip)
{
if (r_pixbytes == 1 || r_pixbytes == 4)
{
for (dec = r_drawsurf.surf->decal; dec; dec = dec->next)
{
int x, y;
x = rand()%smax;
y = rand()%tmax;
pcolumndest = r_drawsurf.surfdat;
pcolumndest[y*smax+x] = 15;
SWR_DrawDecal8(dec);
}
}
}
#endif
}
void R_DrawSurface32 (void)
{
unsigned char *basetptr;
int smax, tmax, twidth;
int u;
int soffset, basetoffset, texwidth;
int horzblockstep;
unsigned char *pcolumndest;
texture_t *mt;
// calculate the lightings
SWR_BuildLightMapRGB ();
surfrowbytes = r_drawsurf.rowbytes;
mt = r_drawsurf.texture;
r_source = (qbyte *)mt + mt->offsets[r_drawsurf.surfmip];
// the fractional light values should range from 0 to (VID_GRADES - 1) << 16
// from a source range of 0 - 255
texwidth = (mt->width*mt->pixbytes) >> 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)*3;
r_numhblocks = r_drawsurf.surfwidth >> blockdivshift;
r_numvblocks = r_drawsurf.surfheight >> blockdivshift;
//==============================
horzblockstep = blocksize*4;
smax = (mt->width*mt->pixbytes) >> r_drawsurf.surfmip;
twidth = texwidth;
tmax = mt->height >> r_drawsurf.surfmip;
sourcetstep = texwidth;
r_stepback = tmax * twidth;
r_sourcemax = r_source + (tmax * smax);
soffset = r_drawsurf.surf->texturemins[0]*mt->pixbytes;
basetoffset = r_drawsurf.surf->texturemins[1];
// << 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 = r_drawsurf.surfdat;
if (mt->pixbytes == 4)
{
for (u=0 ; u<r_numhblocks; u++)
{
r_lightptr = blocklights + u*3;
prowdestbase = pcolumndest;
pbasesource = basetptr + soffset;
R_DrawSurfaceBlock32From32Lit();
soffset = soffset + blocksize*4;
if (soffset >= smax)
soffset = 0;
pcolumndest += horzblockstep;
}
}
else
{
for (u=0 ; u<r_numhblocks; u++)
{
r_lightptr = blocklights + u*3;
prowdestbase = pcolumndest;
pbasesource = basetptr + soffset;
R_DrawSurfaceBlock32From8Lit();
soffset = soffset + blocksize;
if (soffset >= smax)
soffset = 0;
pcolumndest += horzblockstep;
}
}
}
//=============================================================================
#if !id386
/*
================
R_DrawSurfaceBlock8_mip0
================
*/
void R_DrawSurfaceBlock8_mip0 (void)
{
int v, i, b, lightstep, lighttemp, light;
unsigned char pix, *psource, *prowdest;
psource = pbasesource;
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++)
{
lighttemp = lightleft - lightright;
lightstep = lighttemp >> 4;
light = lightright;
for (b=15; b>=0; b--)
{
pix = psource[b];
prowdest[b] = ((unsigned char *)vid.colormap)
[(light & 0xFF00) + pix];
light += lightstep;
}
psource += sourcetstep;
lightright += lightrightstep;
lightleft += lightleftstep;
prowdest += surfrowbytes;
}
if (psource >= r_sourcemax)
psource -= r_stepback;
}
}
/*
================
R_DrawSurfaceBlock8_mip1
================
*/
void R_DrawSurfaceBlock8_mip1 (void)
{
int v, i, b, lightstep, lighttemp, light;
unsigned char pix, *psource, *prowdest;
psource = pbasesource;
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++)
{
lighttemp = lightleft - lightright;
lightstep = lighttemp >> 3;
light = lightright;
for (b=7; b>=0; b--)
{
pix = psource[b];
prowdest[b] = ((unsigned char *)vid.colormap)
[(light & 0xFF00) + pix];
light += lightstep;
}
psource += sourcetstep;
lightright += lightrightstep;
lightleft += lightleftstep;
prowdest += surfrowbytes;
}
if (psource >= r_sourcemax)
psource -= r_stepback;
}
}
/*
================
R_DrawSurfaceBlock8_mip2
================
*/
void R_DrawSurfaceBlock8_mip2 (void)
{
int v, i, b, lightstep, lighttemp, light;
unsigned char pix, *psource, *prowdest;
psource = pbasesource;
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++)
{
lighttemp = lightleft - lightright;
lightstep = lighttemp >> 2;
light = lightright;
for (b=3; b>=0; b--)
{
pix = psource[b];
prowdest[b] = ((unsigned char *)vid.colormap)
[(light & 0xFF00) + pix];
light += lightstep;
}
psource += sourcetstep;
lightright += lightrightstep;
lightleft += lightleftstep;
prowdest += surfrowbytes;
}
if (psource >= r_sourcemax)
psource -= r_stepback;
}
}
/*
================
R_DrawSurfaceBlock8_mip3
================
*/
void R_DrawSurfaceBlock8_mip3 (void)
{
int v, i, b, lightstep, lighttemp, light;
unsigned char pix, *psource, *prowdest;
psource = pbasesource;
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++)
{
lighttemp = lightleft - lightright;
lightstep = lighttemp >> 1;
light = lightright;
for (b=1; b>=0; b--)
{
pix = psource[b];
prowdest[b] = ((unsigned char *)vid.colormap)
[(light & 0xFF00) + pix];
light += lightstep;
}
psource += sourcetstep;
lightright += lightrightstep;
lightleft += lightleftstep;
prowdest += surfrowbytes;
}
if (psource >= r_sourcemax)
psource -= r_stepback;
}
}
#endif
//add lits?
void R_DrawSurfaceBlock16From8 (void)
{
int v, i, b, lightstep, lighttemp, light;
unsigned char pix, *psource;
unsigned short *prowdest;
psource = pbasesource;
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) >> blockdivshift;
lightrightstep = (r_lightptr[1] - lightright) >> blockdivshift;
for (i=0 ; i<blocksize ; i++)
{
lighttemp = lightleft - lightright;
lightstep = lighttemp >> blockdivshift;
light = lightright;
for (b=blocksize-1; b>=0; b--)
{
pix = psource[b];
prowdest[b] = vid.colormap16[(light & 0xFF00) + pix];
light += lightstep;
}
psource += sourcetstep;
lightright += lightrightstep;
lightleft += lightleftstep;
prowdest += surfrowbytes;
}
if (psource >= r_sourcemax)
psource -= r_stepback;
}
}
//8 bit disk texture to 32 bit mem cache
void R_DrawSurfaceBlock32From8 (void)
{
int v, i, b, lightstep, lighttemp, light;
unsigned char pix, *psource;
unsigned int *prowdest;
psource = pbasesource;
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) >> blockdivshift;
lightrightstep = (r_lightptr[1] - lightright) >> blockdivshift;
for (i=0 ; i<blocksize ; i++)
{
lighttemp = lightleft - lightright;
lightstep = lighttemp >> blockdivshift;
light = lightright;
for (b=blocksize-1; b>=0; b--)
{
pix = psource[b];
prowdest[b] = d_8to32table[((unsigned char *)vid.colormap)[(light & 0xFF00) + pix]];
light += lightstep;
}
psource += sourcetstep;
lightright += lightrightstep;
lightleft += lightleftstep;
prowdest += surfrowbytes;
}
if (psource >= r_sourcemax)
psource -= r_stepback;
}
}
//8 bit disk texture to 32 bit mem cache, with added rgb lighting
void R_DrawSurfaceBlock32From8Lit (void)
{
//#define SMOOTHLIGHT
int v, i, b;
int lightstepr;
int lightleftr, lightrightr, lightleftstepr, lightrightstepr;
int lightstepg;
int lightleftg, lightrightg, lightleftstepg, lightrightstepg;
int lightstepb;
int lightleftb, lightrightb, lightleftstepb, lightrightstepb;
unsigned char pix, *psource;
unsigned int lightb, lightg, lightr;
#ifdef SMOOTHLIGHT
unsigned char *prowdest;
#else
unsigned int *prowdest;
#endif
psource = pbasesource;
prowdest = prowdestbase;
for (v=0 ; v<r_numvblocks ; v++)
{
// FIXME: make these locals?
// FIXME: use delta rather than both right and left, like ASM?
lightleftr = r_lightptr[0];
lightrightr = r_lightptr[3];
lightleftg = r_lightptr[0+1];
lightrightg = r_lightptr[3+1];
lightleftb = r_lightptr[0+2];
lightrightb = r_lightptr[3+2];
r_lightptr += r_lightwidth;
lightleftstepr = (r_lightptr[0] - lightleftr) >> blockdivshift;
lightrightstepr = (r_lightptr[3] - lightrightr) >> blockdivshift;
lightleftstepg = (r_lightptr[0+1] - lightleftg) >> blockdivshift;
lightrightstepg = (r_lightptr[3+1] - lightrightg) >> blockdivshift;
lightleftstepb = (r_lightptr[0+2] - lightleftb) >> blockdivshift;
lightrightstepb = (r_lightptr[3+2] - lightrightb) >> blockdivshift;
for (i=0 ; i<blocksize ; i++)
{
lightstepr = (lightleftr - lightrightr) >> blockdivshift;
lightstepg = (lightleftg - lightrightg) >> blockdivshift;
lightstepb = (lightleftb - lightrightb) >> blockdivshift;
lightr = lightrightr;
lightg = lightrightg;
lightb = lightrightb;
for (b=blocksize-1; b>=0; b--)
{
pix = psource[b];
#ifndef SMOOTHLIGHT
#if 1
prowdest[b] = (d_8to32table[((unsigned char *)vid.colormap)[(lightb & 0xFF00) + pix]]&0xff) |
(d_8to32table[((unsigned char *)vid.colormap)[(lightg & 0xFF00) + pix]]&0xff00) |
(d_8to32table[((unsigned char *)vid.colormap)[(lightr & 0xFF00) + pix]]&0xff0000);
#else
prowdest[b] = (d_8to32table[((unsigned char *)vid.colormap)[(lightb & 0xFF00) + 15]]&0xff) |
(d_8to32table[((unsigned char *)vid.colormap)[(lightg & 0xFF00) + 15]]&0xff00) |
(d_8to32table[((unsigned char *)vid.colormap)[(lightr & 0xFF00) + 15]]&0xff0000);
#endif
#else
#if 1
prowdest[b*4] = (((d_8to32table[pix]&0x0000ff) ) * (0x3f00-(lightb& 0x3fff)))>>13;
prowdest[b*4+1] = (((d_8to32table[pix]&0x00ff00)>>8 ) * (0x3f00-(lightg& 0x3fff)))>>13;
prowdest[b*4+2] = (((d_8to32table[pix]&0xff0000)>>16) * (0x3f00-(lightr& 0x3fff)))>>13;
#else
prowdest[b*4] = (((d_8to32table[pix]&0x0000ff) ) * (0x4000-(lightb& 0x4000)))>>15;
prowdest[b*4+1] = ((255) * (0xFFFF-(lightg& 0xFF00)))>>14;
prowdest[b*4+2] = ((255) * (0xFFFF-(lightr& 0xFF00)))>>14;
#endif
#endif
lightr += lightstepr;
lightg += lightstepg;
lightb += lightstepb;
}
psource += sourcetstep;
lightrightr += lightrightstepr;
lightleftr += lightleftstepr;
lightrightg += lightrightstepg;
lightleftg += lightleftstepg;
lightrightb += lightrightstepb;
lightleftb += lightleftstepb;
#ifdef SMOOTHLIGHT
prowdest += surfrowbytes*4;
#else
prowdest += surfrowbytes;
#endif
}
if (psource >= r_sourcemax)
psource -= r_stepback;
}
}
extern qbyte gammatable[];
//32 bit disk texture to 32 bit mem cache, with added rgb lighting
void R_DrawSurfaceBlock32From32Lit (void)
{
int v, i, b;
int lightstepr, lightr;
int lightleftr, lightrightr, lightleftstepr, lightrightstepr;
int lightstepg, lightg;
int lightleftg, lightrightg, lightleftstepg, lightrightstepg;
int lightstepb, lightb;
int lightleftb, lightrightb, lightleftstepb, lightrightstepb;
qbyte pix, *psource;
qbyte *prowdest;
psource = pbasesource;
prowdest = prowdestbase;
for (v=0 ; v<r_numvblocks ; v++)
{
// FIXME: make these locals?
// FIXME: use delta rather than both right and left, like ASM?
lightleftr = r_lightptr[0];
lightrightr = r_lightptr[3];
lightleftg = r_lightptr[0+1];
lightrightg = r_lightptr[3+1];
lightleftb = r_lightptr[0+2];
lightrightb = r_lightptr[3+2];
r_lightptr += r_lightwidth;
lightleftstepr = (r_lightptr[0] - lightleftr) >> blockdivshift;
lightrightstepr = (r_lightptr[3] - lightrightr) >> blockdivshift;
lightleftstepg = (r_lightptr[0+1] - lightleftg) >> blockdivshift;
lightrightstepg = (r_lightptr[3+1] - lightrightg) >> blockdivshift;
lightleftstepb = (r_lightptr[0+2] - lightleftb) >> blockdivshift;
lightrightstepb = (r_lightptr[3+2] - lightrightb) >> blockdivshift;
for (i=0 ; i<blocksize ; i++)
{
lightstepr = (lightleftr - lightrightr) >> blockdivshift;
lightstepg = (lightleftg - lightrightg) >> blockdivshift;
lightstepb = (lightleftb - lightrightb) >> blockdivshift;
lightr = lightrightr;
lightg = lightrightg;
lightb = lightrightb;
for (b=(blocksize-1)<<2; b>=0; b-=4)
{
pix = psource[b+2];
prowdest[b+0] = pix;
pix = psource[b+1];
prowdest[b+1] = pix;
pix = psource[b+0];
prowdest[b+2] = pix;
prowdest[b+0] = gammatable[((int)psource[b+2]*(0x3FFF-(lightb & 0x3FFF))) / 0x3FFF];
prowdest[b+1] = gammatable[((int)psource[b+1]*(0x3FFF-(lightg & 0x3FFF))) / 0x3FFF];
prowdest[b+2] = gammatable[((int)psource[b+0]*(0x3FFF-(lightr & 0x3FFF))) / 0x3FFF];
prowdest[b+3] = psource[b+3];
lightr += lightstepr;
lightg += lightstepg;
lightb += lightstepb;
}
psource += sourcetstep;
lightrightr += lightrightstepr;
lightleftr += lightleftstepr;
lightrightg += lightrightstepg;
lightleftg += lightleftstepg;
lightrightb += lightrightstepb;
lightleftb += lightleftstepb;
prowdest += surfrowbytes<<2;
}
if (psource >= r_sourcemax)
psource -= r_stepback;
}
}
//============================================================================
/*
================
R_GenTurbTile
================
*/
void R_GenTurbTile (pixel_t *pbasetex, void *pdest)
{
int *turb;
int i, j, s, t;
qbyte *pd;
turb = sintable + ((int)(cl.time*SPEED)&(CYCLE-1));
pd = (qbyte *)pdest;
for (i=0 ; i<TILE_SIZE ; i++)
{
for (j=0 ; j<TILE_SIZE ; j++)
{
s = (((j << 16) + turb[i & (CYCLE-1)]) >> 16) & 63;
t = (((i << 16) + turb[j & (CYCLE-1)]) >> 16) & 63;
*pd++ = *(pbasetex + (t<<6) + s);
}
}
}
/*
================
R_GenTurbTile16
================
*/
void R_GenTurbTile16 (pixel_t *pbasetex, void *pdest)
{
int *turb;
int i, j, s, t;
unsigned short *pd;
turb = sintable + ((int)(cl.time*SPEED)&(CYCLE-1));
pd = (unsigned short *)pdest;
for (i=0 ; i<TILE_SIZE ; i++)
{
for (j=0 ; j<TILE_SIZE ; j++)
{
s = (((j << 16) + turb[i & (CYCLE-1)]) >> 16) & 63;
t = (((i << 16) + turb[j & (CYCLE-1)]) >> 16) & 63;
*pd++ = d_8to16table[*(pbasetex + (t<<6) + s)];
}
}
}
/*
================
R_GenTile
================
*/
void R_GenTile (msurface_t *psurf, void *pdest)
{
if (psurf->flags & SURF_DRAWTURB)
{
if (r_pixbytes == 1)
{
R_GenTurbTile ((pixel_t *)
((qbyte *)psurf->texinfo->texture + psurf->texinfo->texture->offsets[0]), pdest);
}
else
{
R_GenTurbTile16 ((pixel_t *)
((qbyte *)psurf->texinfo->texture + psurf->texinfo->texture->offsets[0]), pdest);
}
}
else if (psurf->flags & SURF_DRAWSKY)
{
if (r_pixbytes == 1)
{
R_GenSkyTile (pdest);
}
else
{
R_GenSkyTile16 (pdest);
}
}
else
{
Sys_Error ("Unknown tile type");
}
}
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