[9082] in Athena Bugs
decmips 7.3P: XFillRectangle fails on bitmaps wider than 32 bits
daemon@ATHENA.MIT.EDU (Barr3y Jaspan)
Thu Mar 12 21:54:57 1992
To: bugs@Athena.MIT.EDU
Date: Thu, 12 Mar 92 21:54:38 EST
From: "Barr3y Jaspan" <bjaspan@Athena.MIT.EDU>
System name: hodge
Type and version: KN01 7.3P (1 update(s) to same version)
Display type: PMAX-MFB
What were you trying to do?
Use XFillRectangle to fill a region with copies of a bitmap that is
wider than 32 bits.
What's wrong:
It's failing. Portions of the rectangle to be filled in are drawn as
solid. This happens *only* on a DECstation.
What should have happened:
The bitmap should have been drawn correctly.
The following program demonstrates the problem. It does an XCopyArea
to show a normal copy of the bitmap (which works fine), and then an
XFillRectanngle to demonstrate the failure.
--- snip snip ---
#include <stdio.h>
#include <X11/Xlib.h>
#define t_wall_width 52
#define t_wall_height 26
static char t_wall_bits[] = {
0xff,0x3f,0x08,0x21,0xf8,0xff,0x0f,0xff,0xdf,0x66,0xcc,0xf6,0xff,0x0f,0x00,
0xa0,0x67,0xcc,0x0b,0x00,0x00,0xff,0x4f,0x67,0xcc,0xe5,0xff,0x0f,0xaa,0xaa,
0x67,0xcc,0xab,0xaa,0x0a,0x55,0xc5,0x66,0xcc,0x46,0x55,0x05,0xaa,0xaa,0x67,
0xcc,0xab,0xaa,0x0a,0x55,0x45,0x67,0xcc,0x45,0x55,0x05,0xbb,0xab,0x67,0xcc,
0xab,0xbb,0x0b,0xee,0xce,0x66,0xcc,0xe6,0xee,0x0e,0xbb,0xab,0x67,0xcc,0xab,
0xbb,0x0b,0xff,0x4f,0x67,0xcc,0xe5,0xff,0x0f,0xff,0xaf,0x67,0xcc,0xeb,0xff,
0x0f,0xff,0xcf,0x66,0xcc,0xe6,0xff,0x0f,0xff,0xaf,0x67,0xcc,0xeb,0xff,0x0f,
0xbb,0x4b,0x67,0xcc,0xa5,0xbb,0x0b,0xee,0xae,0x67,0xcc,0xeb,0xee,0x0e,0xbb,
0xcb,0x66,0xcc,0xa6,0xbb,0x0b,0x55,0xa5,0x67,0xcc,0x4b,0x55,0x05,0xaa,0x4a,
0x67,0xcc,0xa5,0xaa,0x0a,0x44,0xa4,0x67,0xcc,0x4b,0x44,0x04,0x00,0xc0,0x66,
0xcc,0x06,0x00,0x00,0x00,0xa0,0x67,0xcc,0x0b,0x00,0x00,0xff,0x4f,0x67,0xcc,
0xe5,0xff,0x0f,0xff,0x9f,0x67,0xcc,0xf3,0xff,0x0f,0xff,0x3f,0x08,0x21,0xf8,
0xff,0x0f};
void Fail(s)
char *s;
{
fprintf(stderr, "%s\n", s);
exit(1);
}
main()
{
Display *dpy;
XEvent event;
Window w;
Pixmap p;
XGCValues GCValues;
GC aGC;
int ret;
dpy = XOpenDisplay(NULL);
if (! dpy) Fail("Cannot open display.");
w = XCreateSimpleWindow(dpy, RootWindow(dpy, DefaultScreen(dpy)),
0, 0,
500, 100,
2,
WhitePixel(dpy, DefaultScreen(dpy)),
BlackPixel(dpy, DefaultScreen(dpy)));
if (! w) Fail("Cannot open window.");
XSelectInput(dpy, w, ExposureMask);
XMapWindow(dpy, w);
GCValues.foreground = WhitePixel(dpy, DefaultScreen(dpy));
GCValues.background = BlackPixel(dpy, DefaultScreen(dpy));
GCValues.graphics_exposures = False;
GCValues.function = GXcopy;
GCValues.fill_style = FillStippled;
aGC = XCreateGC(dpy, w,
(GCFunction | GCForeground | GCBackground |
GCGraphicsExposures | GCLineWidth | GCFillStyle),
&GCValues);
if (! aGC) Fail("Can't create graphics context");
p = XCreatePixmapFromBitmapData(dpy, w, t_wall_bits,
t_wall_width, t_wall_height,
WhitePixel(dpy, DefaultScreen(dpy)),
BlackPixel(dpy, DefaultScreen(dpy)),
1);
if (! p) Fail("Can't create pixmap!");
XSetStipple(dpy, aGC, p);
XSetTSOrigin(dpy, aGC, 10, 46);
while (1) {
XNextEvent(dpy, &event);
if (event.xany.type == Expose) {
XCopyArea(dpy, p, w, aGC, 0, 0, t_wall_width,
t_wall_height, 10, 10);
XFillRectangle(dpy, w, aGC, 10, 46, 480, 26);
}
}
}
