claunia/86Box
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Reworked the force 4:3 code a bit to reduce rounding errors.

Browse Source
This commit is contained in:
OBattler
2017-07-20 21:05:27 +02:00
parent 76222651ba
commit 807631ca01
1 changed files with 13 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
src/WIN/win.c
View File

@@ -165,6 +165,8 @@ void updatewindowsize(int x, int y)
int temp_overscan_x = overscan_x;
int temp_overscan_y = overscan_y;
double dx, dy, dtx, dty;
if (vid_resize) return;
if (x < 160) x = 160;
@@ -182,30 +184,37 @@ void updatewindowsize(int x, int y)
if (force_43)
{
dx = (double) x;
dtx = (double) temp_overscan_x;
dy = (double) y;
dty = (double) temp_overscan_y;
/* Account for possible overscan. */
if (temp_overscan_y == 16)
{
/* CGA */
unscaled_size_y = ((int) (((double) (x - temp_overscan_x) / 4.0) * 3.0)) + temp_overscan_y;
dy = (((dx - dtx) / 4.0) * 3.0) + dty;
}
else if (temp_overscan_y < 16)
{
/* MDA/Hercules */
unscaled_size_y = ((int) (((double) (x) / 4.0) * 3.0));
dy = (x / 4.0) * 3.0;
}
else
{
if (enable_overscan)
{
/* EGA/(S)VGA with overscan */
unscaled_size_y = ((int) (((double) (x - temp_overscan_x) / 4.0) * 3.0)) + temp_overscan_y;
dy = (((dx - dtx) / 4.0) * 3.0) + dty;
}
else
{
/* EGA/(S)VGA without overscan */
unscaled_size_y = ((int) (((double) (x) / 4.0) * 3.0));
dy = (x / 4.0) * 3.0;
}
}
unscaled_size_y = (int) dy;
}
else
{