ref: 804836b5a78086c89ac32bdab8e9884418c8b62f
dir: /cmprocess.c/
#include "quakedef.h"
#include "colormatrix.h"
void
cmprocess(s16int cm[4*4], void *in_, void *out_, int n)
{
u32int *in, *out;
int i;
in = in_;
out = out_;
for(i = 0; i < n; i++, in++){
s32int x[4] = {
(*in>>0)&0xff,
(*in>>8)&0xff,
(*in>>16)&0xff,
0xff,
};
s32int y[4] = {
(x[0]*cm[4*0+0] + x[1]*cm[4*0+1] + x[2]*cm[4*0+2] + x[3]*cm[4*0+3])/CM(1),
(x[0]*cm[4*1+0] + x[1]*cm[4*1+1] + x[2]*cm[4*1+2] + x[3]*cm[4*1+3])/CM(1),
(x[0]*cm[4*2+0] + x[1]*cm[4*2+1] + x[2]*cm[4*2+2] + x[3]*cm[4*2+3])/CM(1),
0xff,
};
u8int z[4] = {
clamp(y[0], 0, 255),
clamp(y[1], 0, 255),
clamp(y[2], 0, 255),
0xff,
};
*out++ = z[0]<<0 | z[1]<<8 | z[2]<<16 | z[3]<<24;
}
}