Demos/SecondReality
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This commit is contained in:
Frater 2017-09-24 01:45:36 +02:00
commit 43352ff262
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54
DDSTARS/DOIT3.C Normal file
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#include <stdio.h>
#include <math.h>
char *vram=(char *)0xa0000000L;
main()
{
FILE *f1;
char *vp;
int a,b,c,r,x,y;
double l1,l2;
_asm mov ax,13h
_asm int 10h
outp(0x3c8,0);
for(a=0;a<8;a++)
{
outp(0x3c9,a*8);
outp(0x3c9,a*8);
outp(0x3c9,a*8);
}
for(y=0;y<200;y++) for(x=0;x<320;x++)
{
a=((long)((x-160)*(long)(320-y)+1600L)/3200L)&1;
vram[x+y*320]=a;
}
c=1;
f1=fopen("pic3.ega","wb");
for(y=0;y<200;y++)
{
for(c=1;c<=4;c<<=1)
{
for(x=0;x<320;x+=8)
{
vp=vram+x+y*320;
a=0;
if(vp[0]&c) a|=128;
if(vp[1]&c) a|=64;
if(vp[2]&c) a|=32;
if(vp[3]&c) a|=16;
if(vp[4]&c) a|=8;
if(vp[5]&c) a|=4;
if(vp[6]&c) a|=2;
if(vp[7]&c) a|=1;
putc(a,f1);
}
}
vram[y*320]=15;
vram[y*320+1]=0;
}
fclose(f1);
getch();
_asm mov ax,3
_asm int 10h
}