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#define BLOCK_SIZE ( 1 << BLOCK_SHIFT )
void BLOCK_FUNC( void ){
int v, i, b, lightstep, lighttemp, light;
byte 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) >> BLOCK_SHIFT;
lightrightstep = (r_lightptr[1] - lightright) >> BLOCK_SHIFT;
for (i=0 ; i<BLOCK_SIZE ; i++)
{
lighttemp = lightleft - lightright;
lightstep = lighttemp >> BLOCK_SHIFT;
light = lightright;
for (b=BLOCK_SIZE-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;
}
}
#undef BLOCK_FUNC
#undef BLOCK_SIZE
#undef BLOCK_SHIFT
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