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r_surf.c
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/* Copyright (C) 1996-1997 Id Software, Inc.
Copyright (C) 1999-2012 other authors as noted in code comments
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 3 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"
#include "d_local.h" //qb: ftestain
extern shadow_t cl_shadows[MAX_SHADOWS];
drawsurf_t r_drawsurf;
int coloredlights; //qb: sanity check ala engoo
static int lightleft, lightright, lightleftstep, lightrightstep;
static int sourcesstep, blocksize, sourcetstep;
static int blockdivshift;
void *prowdestbase;
byte *pbasesource;
static int surfrowbytes; // used by ASM files
unsigned *r_lightptr;
unsigned *r_colorptr; //qb: color
static int r_stepback;
static int r_lightwidth;
int r_numhblocks, r_numvblocks;
byte *r_source, *r_sourcemax;
byte *vidcolmap; //qb: color
unsigned blocklights[18*18];
unsigned blockcolors[18*18]; //qb: color
const byte dithercolor[] = //qb: fast randomish dither
{ 0, 2, 1, 3, 2, 3, 1, 0, 3, 0, 2, 1, 1, 2, 0, 3, 0, 3, 1, 2, 1, 2, 3, 0, 0, 1, 3, 2, 3, 2, 0, 1, 3, 2, 0, 1, 0, 3, 1, 2, 0};
void R_DrawSurfaceBlockColor8_mip0 (void);
void R_DrawSurfaceBlockColor8_mip1 (void);
void R_DrawSurfaceBlockColor8_mip2 (void);
void R_DrawSurfaceBlockColor8_mip3 (void);
void R_DrawSurfaceBlock8_mip0 (void);
void R_DrawSurfaceBlock8_mip1 (void);
void R_DrawSurfaceBlock8_mip2 (void);
void R_DrawSurfaceBlock8_mip3 (void);
static void (*surfmiptableColor[4])(void) = //qb
{
R_DrawSurfaceBlockColor8_mip0,
R_DrawSurfaceBlockColor8_mip1,
R_DrawSurfaceBlockColor8_mip2,
R_DrawSurfaceBlockColor8_mip3
};
static void (*surfmiptable[4])(void) =
{
R_DrawSurfaceBlock8_mip0,
R_DrawSurfaceBlock8_mip1,
R_DrawSurfaceBlock8_mip2,
R_DrawSurfaceBlock8_mip3
};
//qb: ftestain begin
extern cvar_t r_stains;
extern cvar_t r_stainfadetime;
extern cvar_t r_stainfadeamount;
#define LMBLOCK_WIDTH 128
#define LMBLOCK_HEIGHT 128
#define MAX_LIGHTMAPS 512 //qb: was 64
typedef byte stmap;
stmap stainmaps[MAX_LIGHTMAPS*LMBLOCK_WIDTH*LMBLOCK_HEIGHT]; //added to lightmap for speed.
int allocated[MAX_LIGHTMAPS][LMBLOCK_WIDTH];
int last_lightmap_allocated; //qb: from QS- ericw -- optimization: remember the index of the last lightmap AllocBlock stored a surf in
//radius, x y z, a
void R_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;
int lim;
mtexinfo_t *tex;
stmap *stainbase;
lim = 255 - (r_stains.value*255);
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(lim, 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 R_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))
{
R_Q1BSP_StainNode (node->children[0], parms);
return;
}
if (dist < (-*parms))
{
R_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;
R_StainSurf(surf, parms);
}
R_Q1BSP_StainNode (node->children[0], parms);
R_Q1BSP_StainNode (node->children[1], parms);
}
void R_AddStain(vec3_t org, float tint, float radius)
{
entity_t *pe;
int i;
float parms[5];
if (r_stains.value <= 0 || !cl.worldmodel)
return;
parms[0] = radius;
parms[1] = org[0];
parms[2] = org[1];
parms[3] = org[2];
parms[4] = tint;
R_Q1BSP_StainNode(cl.worldmodel->nodes+cl.worldmodel->hulls[0].firstclipnode, parms);
//now stain bsp models other than world.
for (i=1 ; i< cl.num_entities ; i++) //0 is world...
{
pe = &cl_entities[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];
R_Q1BSP_StainNode(pe->model->nodes+pe->model->hulls[0].firstclipnode, parms);
}
}
}
void R_WipeStains(void)
{
memset(stainmaps, 255, sizeof(stainmaps));
}
void R_LessenStains(void)
{
int i, j;
msurface_t *surf;
int smax, tmax;
int s, t;
stmap *stain;
int stride;
int amount, limit;
static float time;
if (r_stains.value <= 0 || cl.paused)
{
time = 0;
return;
}
time += host_frametime;
if (time < r_stainfadetime.value)
return;
time-=r_stainfadetime.value;
amount = r_stainfadeamount.value;
limit = 255 - amount;
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 += amount;
surf->stained=true;
}
else //reset to 255.
*stain = 255;
stain++;
}
}
}
}
}
// 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;
//qb: from QS
// ericw -- rather than searching starting at lightmap 0 every time,
// start at the last lightmap we allocated a surface in.
// This makes AllocBlock much faster on large levels (can shave off 3+ seconds
// of load time on a level with 180 lightmaps), at a cost of not quite packing
// lightmaps as tightly vs. not doing this (uses ~5% more lightmaps)
for (texnum=last_lightmap_allocated ; texnum<MAX_LIGHTMAPS ; texnum++, last_lightmap_allocated++)
{
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;
}
//qb: unusual "fixes" to get bsp2 on the screen = bsp2hack
//Sys_Error("AllocBlock: full at %i %i x %i", last_lightmap_allocated, w, h); //qb: remove for bsp2hack
return 0; //johnfitz -- shut up compiler
}
void R_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 R_BuildLightmaps(void)
{
int i;
msurface_t *surf;
memset(allocated, 0, sizeof(allocated));
R_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]);
R_CreateSurfaceLightmap(surf);
}
}
//qb: ftestain end
/*
===============
R_AddDynamicLights
===============
*/
void R_AddDynamicLights (void)
{
msurface_t *surf;
int lnum;
int sd, td;
float dist, rad, minlight;
vec3_t impact, local;
vec3_t origin_for_ent; //qb: from inside3d post: mankrip - dynamic lights on moving brush models fix
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_DLIGHTS ; lnum++)
{
if (!(surf->dlightbits[lnum >> 5] & (1 << (lnum & 31)))) continue; //qb: from MH
rad = cl_dlights[lnum].radius;
VectorSubtract (cl_dlights[lnum].origin, currententity->origin, origin_for_ent); //qb: from inside3d post: mankrip - dynamic lights on moving brush models fix
dist = DotProduct (origin_for_ent, surf->plane->normal) - //qb: from inside3d post: mankrip - dynamic lights on moving brush models fix - edited
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] = origin_for_ent[i] - //qb: from inside3d post: mankrip - dynamic lights on moving brush models fix - edited
surf->plane->normal[i]*dist;
// {
// 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)
{
unsigned temp;
temp = (rad - dist)*256;
i = t*smax + s;
if (!cl_dlights[lnum].dark)
blocklights[i] += temp;
else
{
if (blocklights[i] > temp)
blocklights[i] -= temp;
else
blocklights[i] = 0;
}
if(coloredlights == 1)
{
blockcolors[i]= cl_dlights[lnum].color;
}
}
}
}
}
}
void R_AddShadows (void) //qb: engoo shadowhack
{
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;
surf = r_drawsurf.surf;
smax = (surf->extents[0]>>4)+1;
tmax = (surf->extents[1]>>4)+1;
tex = surf->texinfo;
for (lnum=0 ; lnum<MAX_SHADOWS ; lnum++)
{
if ( !(surf->shadowbits & (1<<lnum) ) )
continue; // not lit by this light
rad = cl_shadows[lnum].radius;
dist = DotProduct (cl_shadows[lnum].origin, surf->plane->normal) -
surf->plane->dist;
rad -= fabs(dist);
minlight = cl_shadows[lnum].minlight;
if (rad < minlight)
continue;
minlight = rad - minlight;
for (i=0 ; i<3 ; i++)
{
impact[i] = cl_shadows[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)
{
unsigned temp;
temp = (rad - dist)*256;
i = t*smax + s;
//if (!cl_shadows[lnum].dark)
// blocklights[i] += temp;
// else
{
if (blocklights[i] > temp)
blocklights[i] -= temp;
else
blocklights[i] = 0;
}
}
// blocklights[t*smax + s] += (rad - dist)*256;
}
}
}
}
/*
===============
R_BuildLightMap
Combine and scale multiple lightmaps into the 8.8 format in blocklights
===============
*/
void R_BuildLightMap (void)
{
int smax, tmax;
int t, i, surfsize;
byte *lightmap;
byte *colormap; //qb: indexed colored
int r,g,b;
float coladd, colbase;
unsigned scale;
int maps;
msurface_t *surf;
surf = r_drawsurf.surf;
smax = (surf->extents[0]>>4)+1;
tmax = (surf->extents[1]>>4)+1;
surfsize = smax*tmax;
lightmap = surf->samples;
if (coloredlights == 1)
colormap = surf->colorsamples; //qb:
if (r_fullbright.value || !cl.worldmodel->lightdata)
{
for (i=0 ; i<surfsize ; i++)
blocklights[i] = 31<<8;//0; // Manoel Kasimier - fullbright BSP textures fix
return;
}
// clear to ambient
for (i=0 ; i<surfsize ; 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<surfsize ; i++)
{
if (coloredlights == 1)
{
colbase = blocklights[i]/(blocklights[i] + lightmap[i] * scale + 0.1);
coladd = 1.0-colbase;
r = host_basepal[blockcolors[i]*3]*colbase + host_basepal[colormap[i]*3] * coladd * 0.85;
g = host_basepal[blockcolors[i]*3+1]*colbase + host_basepal[colormap[i]*3+1] * coladd *0.75;
b = host_basepal[blockcolors[i]*3+2]*colbase + host_basepal[colormap[i]*3+2] * coladd * 0.65;
blockcolors[i] = palmap[r>>2][g>>2][b>>2]; //qb: need to blend somehow
}
blocklights[i] += lightmap[i] * scale;
}
lightmap += surfsize; // skip to next lightmap
if (coloredlights == 1)
colormap += surfsize; //qb: skip to next colormap
}
// add all the dynamic lights
if (surf->dlightframe == r_framecount)
R_AddDynamicLights ();
if (surf->shadowframe == r_framecount)
{
R_AddShadows ();
}
// and shadows
//qb: ftestains begin
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;
}
//qb: ftestains end
// bound, invert, and shift
for (i=0 ; i<surfsize ; i++)
{
t = (255*256 - (int)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
===============
*/
texture_t *R_TextureAnimation (texture_t *base)
{
int relative;
int count;
if (currententity->frame)
{
if (base->alternate_anims)
base = base->alternate_anims;
}
if (!base->anim_total)
return base;
relative = (int)(cl.ctime*10) % base->anim_total; //DEMO_REWIND - qb: Baker change
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;
}
/*
===============
R_DrawSurface
===============
*/
void R_DrawSurface (void)
{
byte *basetptr;
int smax, tmax, twidth;
int u;
int soffset, basetoffset, texwidth;
int horzblockstep;
byte *pcolumndest;
void (*pblockdrawer)(void);
texture_t *mt;
vidcolmap = (byte *)vid.colormap; //qb
// calculate the lightings
R_BuildLightMap ();
surfrowbytes = r_drawsurf.rowbytes;
mt = r_drawsurf.texture;
r_source = (byte *)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;
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)
{
if (coloredlights == 1)
pblockdrawer = surfmiptableColor[r_drawsurf.surfmip];
else
pblockdrawer = surfmiptable[r_drawsurf.surfmip];
// TODO: only needs to be set when there is a display settings change
horzblockstep = blocksize;
}
else
{
pblockdrawer = R_DrawSurfaceBlock16;
// 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;
r_colorptr = blockcolors + u; //qb:
prowdestbase = pcolumndest;
pbasesource = basetptr + soffset;
(*pblockdrawer)();
soffset = soffset + blocksize;
if (soffset >= smax)
soffset = 0;
pcolumndest += horzblockstep;
}
}
//=============================================================================
/*
================
R_DrawSurfaceBlockColor8 //qb: combine standard lightmap and indexed color lightmap
================
*/
//qbism: macroize idea from mankrip
#define WRITEPROWDEST(i) { prowdest[i] = vidcolmap[((light += lightstep) & 0xFF00)+ lightcolormap[psource[i] + blend[dithercolor[(byte)light%41]]]];}
#define WRITEPROWLAST { prowdest[0] = vidcolmap[(light & 0xFF00)+ lightcolormap[psource[0] + blend[dithercolor[(byte)light%41]]]];}
static int lightstep, light;
static int colorL, colorR, colorL2, colorR2, blend[4]; //qb: indexed lit
static byte *psource, *prowdest;
void R_DrawSurfaceBlockColor8_mip0 (void)
{
int v,i;
psource = pbasesource;
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) >> 4;
lightrightstep = (r_lightptr[1] - lightright) >> 4;
colorL = r_colorptr[0];
colorR = r_colorptr[1];
r_colorptr += r_lightwidth;
colorL2 = r_colorptr[0];
colorR2 = r_colorptr[1];
blend[0] = alpha50map[colorL+colorL2*256]*256;
blend[1] = alpha50map[colorR+colorR2*256]*256;
blend[2] = alpha50map[colorL+colorR*256]*256;
blend[3] = alpha50map[colorL2+colorR2*256]*256;
for (i=0 ; i<16 ; i++)
{
lightstep = (lightleft - lightright) >> 4;
light = lightright;
WRITEPROWDEST(15);
WRITEPROWDEST(14);
WRITEPROWDEST(13);
WRITEPROWDEST(12);
WRITEPROWDEST(11);
WRITEPROWDEST(10);
WRITEPROWDEST(9);
WRITEPROWDEST(8);
WRITEPROWDEST(7);
WRITEPROWDEST(6);
WRITEPROWDEST(5);
WRITEPROWDEST(4);
WRITEPROWDEST(3);
WRITEPROWDEST(2);
WRITEPROWDEST(1);
WRITEPROWLAST;
//prowdest[1] = vidcolmap[((light += lightstep) & 0xFF00) + lightcolormap[psource[1] + blend[dithercolor[(byte)light%41]]]];
//prowdest[0] = vidcolmap[(light & 0xFF00) + lightcolormap[psource[0] + blend[dithercolor[(byte)light%41]]]];
psource += sourcetstep;
lightright += lightrightstep;
lightleft += lightleftstep;
prowdest += surfrowbytes;
}
if (psource >= r_sourcemax)
psource -= r_stepback;
}
}
void R_DrawSurfaceBlockColor8_mip1 (void)
{
int v,i;
psource = pbasesource;
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) >> 3;
lightrightstep = (r_lightptr[1] - lightright) >> 3;
colorL = r_colorptr[0];
colorR = r_colorptr[1];
r_colorptr += r_lightwidth;
colorL2 = r_colorptr[0];
colorR2 = r_colorptr[1];
blend[0] = alpha50map[colorL+colorL2*256]*256;
blend[1] = alpha50map[colorR+colorR2*256]*256;
blend[2] = alpha50map[colorL+colorR*256]*256;
blend[3] = alpha50map[colorL2+colorR2*256]*256;
for (i=0 ; i<8 ; i++)
{
lightstep = (lightleft - lightright) >> 3;
light = lightright;
WRITEPROWDEST(7);
WRITEPROWDEST(6);
WRITEPROWDEST(5);
WRITEPROWDEST(4);
WRITEPROWDEST(3);
WRITEPROWDEST(2);
WRITEPROWDEST(1);
WRITEPROWLAST;
psource += sourcetstep;
lightright += lightrightstep;
lightleft += lightleftstep;
prowdest += surfrowbytes;
}
if (psource >= r_sourcemax)
psource -= r_stepback;
}
}
void R_DrawSurfaceBlockColor8_mip2(void)
{
int v,i;
psource = pbasesource;
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) >> 2;
lightrightstep = (r_lightptr[1] - lightright) >> 2;
colorL = r_colorptr[0];
colorR = r_colorptr[1];
r_colorptr += r_lightwidth;
colorL2 = r_colorptr[0];
colorR2 = r_colorptr[1];
blend[0] = alpha50map[colorL+colorL2*256]*256;
blend[1] = alpha50map[colorR+colorR2*256]*256;
blend[2] = alpha50map[colorL+colorR*256]*256;
blend[3] = alpha50map[colorL2+colorR2*256]*256;
for (i=0 ; i<4 ; i++)
{
lightstep = (lightleft - lightright) >> 2;
light = lightright;
WRITEPROWDEST(3);
WRITEPROWDEST(2);
WRITEPROWDEST(1);
WRITEPROWLAST;
psource += sourcetstep;
lightright += lightrightstep;
lightleft += lightleftstep;
prowdest += surfrowbytes;
}
if (psource >= r_sourcemax)
psource -= r_stepback;
}
}
void R_DrawSurfaceBlockColor8_mip3 (void)
{
int v,i;
psource = pbasesource;
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) >> 1;
lightrightstep = (r_lightptr[1] - lightright) >> 1;
colorL = r_colorptr[0];
colorR = r_colorptr[1];
r_colorptr += r_lightwidth;
colorL2 = r_colorptr[0];
colorR2 = r_colorptr[1];
blend[0] = alpha50map[colorL+colorL2*256]*256;
blend[1] = alpha50map[colorR+colorR2*256]*256;
blend[2] = alpha50map[colorL+colorR*256]*256;
blend[3] = alpha50map[colorL2+colorR2*256]*256;
for (i=0; i<2 ; i++)
{