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fteqw/engine/sw/d_trans.c

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//contains routines for blending images (as well as blitting 32bit to 8bit type stuff)
#include "quakedef.h"
#include "d_local.h"
#include "r_local.h"
void MakeVideoPalette(void);
int t_numtables;
qbyte p1multitable[] = {1, 99, 49, 97, 48, 19, 47, 93, 23, 91, 9, 89, 22, 87, 43, 17, 21, 83, 41, 81, 4, 79, 39, 77, 19, 3, 37, 73, 18, 71, 7, 69, 17, 67, 33, 13, 16, 63, 31, 61, 3, 59, 29, 57, 14, 11, 27, 53, 13, 51, 1, 49, 12, 47, 23, 9, 11, 43, 21, 41, 2, 39, 19, 37, 9, 7, 17, 33, 8, 31, 3, 29, 7, 27, 13, 1, 6, 23, 11, 21, 1, 19, 9, 17, 4, 3, 7, 13, 3, 11, 1, 9, 2, 7, 3, 1, 1, 3, 1, 1, 0};
qbyte p2multitable[] = {0, 1, 1, 3, 2, 1, 3, 7, 2, 9, 1, 11, 3, 13, 7, 3, 4, 17, 9, 19, 1, 21, 11, 23, 6, 1, 13, 27, 7, 29, 3, 31, 8, 33, 17, 7, 9, 37, 19, 39, 2, 41, 21, 43, 11, 9, 23, 47, 12, 49, 1, 51, 13, 53, 27, 11, 14, 57, 29, 59, 3, 61, 31, 63, 16, 13, 33, 67, 17, 69, 7, 71, 18, 73, 37, 3, 19, 77, 39, 79, 4, 81, 41, 83, 21, 17, 43, 87, 22, 89, 9, 91, 23, 93, 47, 19, 24, 97, 49, 99, 1};
tlookup *t_lookup;
tlookupp *t_curlookupp;
int t_curtable;
int t_numtables;
int t_numtablesinv;//numtables/65546
int t_state;
#define palette host_basepal
#define _abs(x) ((x)*(x))
void R_ReverseTable(int table)
{
int p, p2, temp;
for (p = 0; p < 256; p++)
for (p2 = p+1; p2 < 256; p2++)
{
temp = (t_lookup[table])[p][p2];
(t_lookup[table])[p][p2] = (t_lookup[table])[p2][p];
(t_lookup[table])[p2][p] = temp;
}
}
void R_CalcTransTable(int table, int level)
{
FILE * f;
int p;
int p2;
int r, g, b, j;
int i;
unsigned char *pa;
int m, rvr;
int dif, curdif;
qbyte p1multi;
qbyte p2multi;
qbyte pixdivide;
p1multi = p1multitable[level];
p2multi = p2multitable[level];
pixdivide = p1multi + p2multi;
if (level > 99) // trivial generate for p2
{
for (p = 0; p < 256; p++)
for (p2 = 0; p2 < 256; p2++)
(t_lookup[table])[p][p2] = p2;
return;
}
if (level < 1) // trivial generate for p
{
for (p = 0; p < 256; p++)
for (p2 = 0; p2 < 256; p2++)
(t_lookup[table])[p][p2] = p;
return;
}
if (level > 50)
{
level = 100 - level;
rvr = 1;
}
else
rvr = 0;
COM_FOpenFile (va("tables/ttable%i.dat", (int) level) , &f); //we can ignore the filesize return value
if (f)
{
if (fread (t_lookup[table], 256, 256, f) == 256)
{
if (rvr)
R_ReverseTable(table);
fclose(f);
return;
}
fclose(f);
}
Con_Printf("Generating transtable %i%%\n", level);
for (p = 0; p < 256; p++)
{
j = p*3;
for (p2 = 0; p2 < 256; p2++)
{
dif = 0x7fffffff;
m=0;
i = p2*3;
r = (palette[j+0] * p1multi + palette[i+0] * p2multi) / pixdivide;
g = (palette[j+1] * p1multi + palette[i+1] * p2multi) / pixdivide;
b = (palette[j+2] * p1multi + palette[i+2] * p2multi) / pixdivide;
for (i = 0,pa=palette; i < 256-16; i++,pa+=3)
{
curdif = _abs(r - pa[0]) + _abs(g - pa[1]) + _abs(b - pa[2]);
if (curdif <= 0) //force 0
{
m = i;
break;
}
if (curdif < dif)
{
dif = curdif;
m = i;
}
}
(t_lookup[table])[p][p2] = m;
}
}
if (r_transtablewrite.value)
{
COM_CreatePath(va("%s/tables/", com_gamedir));
#if 1
f = fopen (va("%s/tables/ttable%i.dat", com_gamedir, (int) level), "wb");
if (f)
{
if (fwrite (t_lookup[table], 256, 256, f) != 256)
{
Con_Printf("Couldn't write data to \"tables/ttable%i.dat\"\n", (int) level);
fclose(f);
if (rvr)
R_ReverseTable(table); // make sure it gets reversed if needed
return;
}
fclose(f);
}
else
Con_Printf("Couldn't write data to \"tables/ttable%i.dat\"\n", (int) level);
#else
COM_WriteFile(va("tables/ttable%i.dat", (int)level, t_lookup[table], 256*256);
#endif
}
if (rvr) // just reverse it here instead of having to do reversed writes
R_ReverseTable(table);
}
void D_InitTrans(void)
{
int i;
int table;
if (t_lookup)
BZ_Free(t_lookup);
//no trans palette yet..
Con_SafePrintf("Making/loading transparency lookup tables\nPlease wait...\n");
MakeVideoPalette();
t_numtables = 5;
i = r_transtables.value;
if (i > 0 && i < 50) // might need a max bound sanity check here
{
t_numtables = i;
}
if ((i = COM_CheckParm("-ttables")) != 0)
{
t_numtables = Q_atoi(com_argv[i+1]);
if (t_numtables < 1)
t_numtables = 1;
if (t_numtables > 50)
t_numtables = 50;
}
t_numtablesinv = ((float)65536/t_numtables)+1;//65546/numtables
t_state = TT_ZERO;
t_curtable=0;
//t_lookup = Hunk_AllocName(sizeof(tlookup)*t_numtables, "Transtables");
t_lookup = BZ_Malloc(sizeof(tlookup)*t_numtables);
t_curlookupp = t_lookup[t_curtable];
if (r_transtablehalf.value)
{
t_state = TT_ZERO|TT_USEHALF;
for (table = 0; table < t_numtables; table++)
R_CalcTransTable(table, (int)floor(((table+1)/(float)(t_numtables*2+1))*100 + 0.5));
}
else
{
if (t_numtables == 1)
R_CalcTransTable(0, 50);
else if (t_numtables == 2)
{
R_CalcTransTable(0, 33);
R_CalcTransTable(1, 67);
}
else
{
for (table = 0; table < t_numtables; table++)
R_CalcTransTable(table, (int)floor(100/((float)(t_numtables-1)/table) + 0.5));
}
}
Con_Printf("Done\n");
}
#ifndef Trans
byte _fastcall Trans(byte p, byte p2)
{
return t_curlookupp[p][p2];
}
#endif
/*
void Set_TransLevelI(int level)
{
t_curtable = level/(100.0f/(t_numtables-1));
t_curlookupp = t_lookup[t_curtable];
}
*/
void Set_TransLevelF(float level) //MUST be between 0 and 1
{
if (level>1)
level = 1;
if (t_state & TT_USEHALF)
{
t_state = TT_ZERO;
t_curtable = floor(level*(t_numtables*2+1) + 0.5);
if (t_curtable > t_numtables)
{
t_curtable = (t_numtables*2+1)-t_curtable;
t_state = TT_REVERSE|TT_ONE;
}
if (t_curtable > 0)
{
t_state &= ~(TT_ZERO|TT_ONE);
t_curlookupp = t_lookup[t_curtable-1];
}
t_state |= TT_USEHALF;
}
else if (t_numtables == 1)
{
if (level < 0.33)
t_state = TT_ZERO;
else if (level > 0.67)
t_state = TT_ONE;
else
t_state = 0;
}
else if (t_numtables == 2)
{
if (level > 0.75)
t_state = TT_ONE;
else if (level > 0.50)
{
t_state = 0;
t_curtable = 1;
t_curlookupp = t_lookup[t_curtable];
}
else if (level > 0.25)
{
t_state = 0;
t_curtable = 0;
t_curlookupp = t_lookup[t_curtable];
}
else
t_state = TT_ZERO;
}
else
{
t_curtable = level*t_numtables;
if (t_curtable >= t_numtables)
t_state = TT_ONE;
else if (t_curtable <= 0)
t_state = TT_ZERO;
else
{
t_state = 0;
t_curlookupp = t_lookup[t_curtable];
}
}
}
qbyte *palxxxto8;
int palmask[3];
int palshift[3];
#define FindPallete(r,g,b) palxxxto8[((r&palmask[0])>>palshift[0]) | ((g&palmask[1])<<palshift[1]) | ((b&palmask[2])<<palshift[2])]
//#define FindPallete(r,g,b) (pal777to8[r>>1][g>>1][b>>1])
qbyte GetPalette(int red, int green, int blue)
{
if (palxxxto8) //fast precalculated method
return FindPallete(red,green,blue);
else //slow, horrible method.
{
int i, best=15;
int bestdif=256*256*256, curdif;
extern qbyte *host_basepal;
qbyte *pa;
#define _abs(x) ((x)*(x))
pa = host_basepal;
for (i = 0; i < 256; i++, pa+=3)
{
curdif = _abs(red - pa[0]) + _abs(green - pa[1]) + _abs(blue - pa[2]);
if (curdif < bestdif)
{
if (curdif<1)
return i;
bestdif = curdif;
best = i;
}
}
return best;
}
}
void MakeVideoPalette(void)
{
// pal77 *temp;
qbyte *temp;
int r, g, b;
int rs, gs, bs, size;
int rstep, gstep, bstep;
int gshift, bshift;
FILE *f;
char filename[11];
if (strlen(r_palconvbits.string) != 3)
{
// r5g6b5 is default
rs = 5;
gs = 6;
bs = 5;
}
else
{
// convert to int
rs = r_palconvbits.string[0] - '0';
gs = r_palconvbits.string[1] - '0';
bs = r_palconvbits.string[2] - '0';
// limit to 4-8 (can't have 3 because the forumla breaks)
if (rs < 4)
rs = 4;
else if (rs > 8)
rs = 8;
if (gs < 4)
gs = 4;
else if (gs > 8)
gs = 8;
if (bs < 4)
bs = 4;
else if (bs > 8)
bs = 8;
}
Q_strcpy(filename, "rgb000.pal");
filename[3] = rs + '0';
filename[4] = gs + '0';
filename[5] = bs + '0';
palshift[0] = 1<<rs;
palshift[1] = 1<<gs;
palshift[2] = 1<<bs;
size = palshift[0]*palshift[1]*palshift[2];
gshift = rs;
bshift = rs+gs;
rs = 8-rs;
gs = 8-gs;
bs = 8-bs;
rstep = 1<<rs;
gstep = 1<<gs;
bstep = 1<<bs;
palmask[0] = 0xff ^ (rstep - 1);
palmask[1] = 0xff ^ (gstep - 1);
palmask[2] = 0xff ^ (bstep - 1);
palxxxto8 = Hunk_AllocName(size, "RGB data");
if (!palxxxto8)
BZ_Free(palxxxto8);
palxxxto8 = NULL;
temp = BZ_Malloc(size);
COM_FOpenFile (filename, &f);
if (f)
{
fread(temp, 1, size, f); //cached
fclose(f);
palxxxto8 = temp;
// update shifts
palshift[0] = rs;
palshift[1] = (8 - palshift[0]) - gs;
palshift[2] = palshift[1] + (8 - bs);
return;
}
rstep >>= 1;
gstep >>= 1;
bstep >>= 1;
for (r = palshift[0] - 1; r >= 0; r--)
for (g = palshift[1] - 1; g >= 0; g--)
for (b = palshift[2] - 1; b >= 0; b--)
{
temp[r+(g<<gshift)+(b<<bshift)] = GetPalette((r<<rs)+rstep, (g<<gs)+gstep, (b<<bs)+bstep);
}
palxxxto8 = temp;
// update shifts
palshift[0] = rs;
palshift[1] = (8 - palshift[0]) - gs;
palshift[2] = palshift[1] + (8 - bs);
if (r_palconvwrite.value)
COM_WriteFile(filename, palxxxto8, size);
}
void MediaSW_ShowFrame8bit(qbyte *framedata, int inwidth, int inheight, qbyte *palette)
{
int y, x;
D_EnableBackBufferAccess (); // of all overlay stuff if drawing directly
if (r_pixbytes == 1)
{
qbyte *dest, *src;
int lines=vid.conheight;
int v;
int f, fstep;
dest = vid.conbuffer;
for (y=0 ; y<lines ; y++, dest += vid.conrowbytes)
{
v = (vid.conheight - lines + y)*inheight/vid.conheight;
src = framedata + v*inwidth;
{
f = 0;
fstep = (inwidth<<16)/vid.conwidth;
for (x=0 ; x<vid.conwidth ; x+=4)
{
dest[x] = FindPallete(palette[src[(f>>16)]*3], palette[src[(f>>16)]*3+1], palette[src[(f>>16)]*3+2]);
f += fstep;
dest[x+1] = FindPallete(palette[src[(f>>16)]*3], palette[src[(f>>16)]*3+1], palette[src[(f>>16)]*3+2]);
f += fstep;
dest[x+2] = FindPallete(palette[src[(f>>16)]*3], palette[src[(f>>16)]*3+1], palette[src[(f>>16)]*3+2]);
f += fstep;
dest[x+3] = FindPallete(palette[src[(f>>16)]*3], palette[src[(f>>16)]*3+1], palette[src[(f>>16)]*3+2]);
f += fstep;
}
}
}
}
else if (r_pixbytes == 2)
{
/* this still expects 32bit input
extern int redbits, redshift;
extern int greenbits, greenshift;
extern int bluebits, blueshift;
unsigned short *dest;
qbyte *src;
int lines=vid.conheight;
int v;
int f, fstep;
dest = (unsigned short *)vid.conbuffer;
for (y=0 ; y<lines ; y++, dest += vid.conrowbytes)
{
v = (vid.conheight - lines + y)*inheight/vid.conheight;
src = framedata + v*inwidth*4;
{
f = 0;
fstep = ((inwidth)*0x10000)/vid.conwidth;
for (x=0 ; x<vid.conwidth; x++) //sw 32 bit rendering is bgrx
{
dest[x] = (((src[(f>>16)*4]*(1<<redbits))/256)<<redshift) + (((src[(f>>16)*4+1]*(1<<greenbits))/256)<<greenshift) + (((src[(f>>16)*4+2]*(1<<bluebits))/256)<<blueshift);
f += fstep;
}
}
}
*/
}
else if (r_pixbytes == 4)
{
qbyte *dest, *src;
int lines=vid.conheight;
int v;
int f, fstep;
dest = vid.conbuffer;
for (y=0 ; y<lines ; y++, dest += vid.conrowbytes*4)
{
v = (vid.conheight - lines + y)*inheight/vid.conheight;
src = framedata + v*inwidth;
{
f = 0;
fstep = ((inwidth)*0x10000)/vid.conwidth;
for (x=0 ; x<vid.conwidth*4 ; x+=4) //sw 32 bit rendering is bgrx
{
dest[x] = palette[src[(f>>16)]*3+2];
dest[x+1] = palette[src[(f>>16)]*3+1];
dest[x+2] = palette[src[(f>>16)]*3];
f += fstep;
}
}
}
}
else
Sys_Error("24 bit rendering?");
D_DisableBackBufferAccess (); // for adapters that can't stay mapped in
SCR_SetUpToDrawConsole();
if (scr_con_current)
SCR_DrawConsole (false);
M_Draw(0);
}
void MediaSW_ShowFrameRGBA_32(qbyte *framedata, int inwidth, int inheight) //top down
{
int y, x;
D_EnableBackBufferAccess (); // of all overlay stuff if drawing directly
if (r_pixbytes == 1)
{
qbyte *dest, *src;
int lines=vid.conheight;
int v;
int f, fstep;
dest = vid.conbuffer;
for (y=0 ; y<lines ; y++, dest += vid.conrowbytes)
{
v = (vid.conheight - lines + y)*inheight/vid.conheight;
src = framedata + v*inwidth*4;
{
f = 0;
fstep = ((inwidth)*0x10000)/vid.conwidth;
for (x=0 ; x<vid.conwidth ; x+=4)
{
dest[x] = FindPallete(src[(f>>16)*4], src[(f>>16)*4+1], src[(f>>16)*4+2]);
f += fstep;
dest[x+1] = FindPallete(src[(f>>16)*4], src[(f>>16)*4+1], src[(f>>16)*4+2]);
f += fstep;
dest[x+2] = FindPallete(src[(f>>16)*4], src[(f>>16)*4+1], src[(f>>16)*4+2]);
f += fstep;
dest[x+3] = FindPallete(src[(f>>16)*4], src[(f>>16)*4+1], src[(f>>16)*4+2]);
f += fstep;
}
}
}
}
else if (r_pixbytes == 2)
{
extern int redbits, redshift;
extern int greenbits, greenshift;
extern int bluebits, blueshift;
unsigned short *dest;
qbyte *src;
int lines=vid.conheight;
int v;
int f, fstep;
dest = (unsigned short *)vid.conbuffer;
for (y=0 ; y<lines ; y++, dest += vid.conrowbytes)
{
v = (vid.conheight - lines + y)*inheight/vid.conheight;
src = framedata + v*inwidth*4;
{
f = 0;
fstep = ((inwidth)*0x10000)/vid.conwidth;
for (x=0 ; x<vid.conwidth; x++) //sw 32 bit rendering is bgrx
{
dest[x] = (((src[(f>>16)*4]*(1<<redbits))/256)<<redshift) + (((src[(f>>16)*4+1]*(1<<greenbits))/256)<<greenshift) + (((src[(f>>16)*4+2]*(1<<bluebits))/256)<<blueshift);
f += fstep;
}
}
}
}
else if (r_pixbytes == 4)
{
qbyte *dest, *src;
int lines=vid.conheight;
int v;
int f, fstep;
dest = vid.conbuffer;
for (y=0 ; y<lines ; y++, dest += vid.conrowbytes*4)
{
v = (vid.conheight - lines + y)*inheight/vid.conheight;
src = framedata + v*inwidth*4;
{
f = 0;
fstep = ((inwidth)*0x10000)/vid.conwidth;
for (x=0 ; x<vid.conwidth*4 ; x+=4) //sw 32 bit rendering is bgrx
{
dest[x] = src[(f>>16)*4+2];
dest[x+1] = src[(f>>16)*4+1];
dest[x+2] = src[(f>>16)*4];
f += fstep;
}
}
}
}
else
Sys_Error("24 bit rendering?");
D_DisableBackBufferAccess (); // for adapters that can't stay mapped in
SCR_SetUpToDrawConsole();
if (scr_con_current)
SCR_DrawConsole (false);
}
void MediaSW_ShowFrameBGR_24_Flip(qbyte *framedata, int inwidth, int inheight) //input is bottom up...
{
int y, x;
D_EnableBackBufferAccess (); // of all overlay stuff if drawing directly
if (r_pixbytes == 1)
{
qbyte *dest, *src;
int lines=vid.conheight;
int v;
int f, fstep;
dest = vid.conbuffer;
for (y=0 ; y<lines ; y++, dest += vid.conrowbytes)
{
v = (lines - y)*inheight/vid.conheight;
src = framedata + v*inwidth*3;
{
f = 0;
fstep = ((inwidth)*0x10000)/vid.conwidth;
for (x=0 ; x<vid.conwidth ; x+=4)
{
dest[x] = FindPallete(src[(f>>16)*3+2], src[(f>>16)*3+1], src[(f>>16)*3]);
f += fstep;
dest[x+1] = FindPallete(src[(f>>16)*3+2], src[(f>>16)*3+1], src[(f>>16)*3]);
f += fstep;
dest[x+2] = FindPallete(src[(f>>16)*3+2], src[(f>>16)*3+1], src[(f>>16)*3]);
f += fstep;
dest[x+3] = FindPallete(src[(f>>16)*3+2], src[(f>>16)*3+1], src[(f>>16)*3]);
f += fstep;
}
}
}
}
else if (r_pixbytes == 2)
{
extern int redbits, redshift;
extern int greenbits, greenshift;
extern int bluebits, blueshift;
unsigned short *dest;
qbyte *src;
int lines=vid.conheight;
int v;
int f, fstep;
dest = (unsigned short *)vid.conbuffer;
for (y=0 ; y<lines ; y++, dest += vid.conrowbytes)
{
v = (lines - y)*inheight/vid.conheight;
src = framedata + v*inwidth*3;
{
f = 0;
fstep = ((inwidth)*0x10000)/vid.conwidth;
for (x=0 ; x<vid.conwidth; x++) //sw 32 bit rendering is bgrx
{
dest[x] = (((src[(f>>16)*3+2]*(1<<redbits))/256)<<redshift) + (((src[(f>>16)*3+1]*(1<<greenbits))/256)<<greenshift) + (((src[(f>>16)*3+0]*(1<<bluebits))/256)<<blueshift);
f += fstep;
}
}
}
}
else if (r_pixbytes == 4)
{
unsigned int *dest;
qbyte *src;
int lines=vid.conheight;
int v;
int f, fstep;
dest = (unsigned int *)vid.conbuffer;
for (y=0 ; y<lines ; y++, dest += vid.conrowbytes)
{
v = (lines - y)*inheight/vid.conheight;
src = framedata + v*inwidth*3;
{
f = 0;
fstep = ((inwidth)*0x10000)/vid.conwidth;
for (x=0 ; x<vid.conwidth ; x++) //sw 32 bit rendering is bgrx
{
*(dest+x) = *(int *)(src + (f>>16)*3);
f += fstep;
}
}
}
}
else
Sys_Error("24 bit rendering?");
D_DisableBackBufferAccess (); // for adapters that can't stay mapped in
SCR_SetUpToDrawConsole();
if (scr_con_current)
SCR_DrawConsole (false);
}
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