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X11: Let XRandR respect multiple screens (DISPLAY=:0.0 vs :0.1, etc).

This commit is contained in:
Ryan C. Gordon 2015-11-17 12:15:35 -05:00
parent 11f2a9f8c4
commit 5224dfcc9a
1 changed files with 116 additions and 113 deletions
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35
src/video/x11/SDL_x11modes.c
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@ -357,16 +357,12 @@ SetXRandRDisplayName(Display *dpy, Atom EDID, char *name, const size_t namelen,
int
X11_InitModes_XRandR(_THIS)
{
/* In theory, you _could_ have multiple screens (like DISPLAY=:0.0
and DISPLAY=:0.1) but no XRandR system we care about is like this,
as all the physical displays would be separate XRandR "outputs" on
the one X11 virtual "screen". So we don't use ScreenCount() here. */
SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
Display *dpy = data->display;
const int screencount = ScreenCount(dpy);
const int default_screen = DefaultScreen(dpy);
RROutput primary = X11_XRRGetOutputPrimary(dpy, RootWindow(dpy, default_screen));
Atom EDID = X11_XInternAtom(dpy, "EDID", False);
const int screen = DefaultScreen(dpy);
RROutput primary;
XRRScreenResources *res = NULL;
Uint32 pixelformat;
XVisualInfo vinfo;
@ -374,15 +370,24 @@ X11_InitModes_XRandR(_THIS)
int looking_for_primary;
int scanline_pad;
int output;
int i, n;
int screen, i, n;
for (looking_for_primary = 1; looking_for_primary >= 0; looking_for_primary--) {
for (screen = 0; screen < screencount; screen++) {
/* we want the primary output first, and then skipped later. */
if ((looking_for_primary && (screen != default_screen)) ||
(!looking_for_primary && (screen == default_screen))) {
continue;
}
if (get_visualinfo(dpy, screen, &vinfo) < 0) {
return -1;
continue; /* uh, skip this screen? */
}
pixelformat = X11_GetPixelFormatFromVisualInfo(dpy, &vinfo);
if (SDL_ISPIXELFORMAT_INDEXED(pixelformat)) {
return SDL_SetError("Palettized video modes are no longer supported");
continue; /* Palettized video modes are no longer supported */
}
scanline_pad = SDL_BYTESPERPIXEL(pixelformat) * 8;
@ -399,12 +404,9 @@ X11_InitModes_XRandR(_THIS)
res = X11_XRRGetScreenResources(dpy, RootWindow(dpy, screen));
if (!res) {
return -1;
continue;
}
primary = X11_XRRGetOutputPrimary(dpy, RootWindow(dpy, screen));
for (looking_for_primary = 1; looking_for_primary >= 0; looking_for_primary--) {
for (output = 0; output < res->noutput; output++) {
XRROutputInfo *output_info;
int display_x, display_y;
@ -419,8 +421,8 @@ X11_InitModes_XRandR(_THIS)
XRRCrtcInfo *crtc;
/* The primary output _should_ always be sorted first, but just in case... */
if ((looking_for_primary && (res->outputs[output] != primary)) ||
(!looking_for_primary && (res->outputs[output] == primary))) {
if ((looking_for_primary && ((screen != default_screen) || (res->outputs[output] != primary))) ||
(!looking_for_primary && (screen == default_screen) && (res->outputs[output] == primary))) {
continue;
}
@ -490,6 +492,7 @@ X11_InitModes_XRandR(_THIS)
SDL_AddVideoDisplay(&display);
}
}
}
X11_XRRFreeScreenResources(res);