mirror of https://github.com/encounter/SDL.git
X11: Let XRandR respect multiple screens (DISPLAY=:0.0 vs :0.1, etc).
This commit is contained in:
Ryan C. Gordon
parent
11f2a9f8c4
commit
5224dfcc9a
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@ -357,16 +357,12 @@ SetXRandRDisplayName(Display *dpy, Atom EDID, char *name, const size_t namelen,
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int
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X11_InitModes_XRandR(_THIS)
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{
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/* In theory, you _could_ have multiple screens (like DISPLAY=:0.0
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and DISPLAY=:0.1) but no XRandR system we care about is like this,
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as all the physical displays would be separate XRandR "outputs" on
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the one X11 virtual "screen". So we don't use ScreenCount() here. */
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SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
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Display *dpy = data->display;
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const int screencount = ScreenCount(dpy);
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const int default_screen = DefaultScreen(dpy);
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RROutput primary = X11_XRRGetOutputPrimary(dpy, RootWindow(dpy, default_screen));
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Atom EDID = X11_XInternAtom(dpy, "EDID", False);
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const int screen = DefaultScreen(dpy);
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RROutput primary;
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XRRScreenResources *res = NULL;
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Uint32 pixelformat;
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XVisualInfo vinfo;
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@ -374,120 +370,127 @@ X11_InitModes_XRandR(_THIS)
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int looking_for_primary;
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int scanline_pad;
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int output;
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int i, n;
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if (get_visualinfo(dpy, screen, &vinfo) < 0) {
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return -1;
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}
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pixelformat = X11_GetPixelFormatFromVisualInfo(dpy, &vinfo);
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if (SDL_ISPIXELFORMAT_INDEXED(pixelformat)) {
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return SDL_SetError("Palettized video modes are no longer supported");
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}
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scanline_pad = SDL_BYTESPERPIXEL(pixelformat) * 8;
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pixmapformats = X11_XListPixmapFormats(dpy, &n);
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if (pixmapformats) {
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for (i = 0; i < n; ++i) {
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if (pixmapformats[i].depth == vinfo.depth) {
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scanline_pad = pixmapformats[i].scanline_pad;
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break;
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}
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}
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X11_XFree(pixmapformats);
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}
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res = X11_XRRGetScreenResources(dpy, RootWindow(dpy, screen));
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if (!res) {
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return -1;
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}
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primary = X11_XRRGetOutputPrimary(dpy, RootWindow(dpy, screen));
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int screen, i, n;
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for (looking_for_primary = 1; looking_for_primary >= 0; looking_for_primary--) {
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for (output = 0; output < res->noutput; output++) {
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XRROutputInfo *output_info;
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int display_x, display_y;
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unsigned long display_mm_width, display_mm_height;
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SDL_DisplayData *displaydata;
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char display_name[128];
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SDL_DisplayMode mode;
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SDL_DisplayModeData *modedata;
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SDL_VideoDisplay display;
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RRMode modeID;
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RRCrtc output_crtc;
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XRRCrtcInfo *crtc;
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for (screen = 0; screen < screencount; screen++) {
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/* The primary output _should_ always be sorted first, but just in case... */
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if ((looking_for_primary && (res->outputs[output] != primary)) ||
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(!looking_for_primary && (res->outputs[output] == primary))) {
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/* we want the primary output first, and then skipped later. */
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if ((looking_for_primary && (screen != default_screen)) ||
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(!looking_for_primary && (screen == default_screen))) {
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continue;
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}
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output_info = X11_XRRGetOutputInfo(dpy, res, res->outputs[output]);
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if (!output_info || !output_info->crtc || output_info->connection == RR_Disconnected) {
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if (get_visualinfo(dpy, screen, &vinfo) < 0) {
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continue; /* uh, skip this screen? */
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}
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pixelformat = X11_GetPixelFormatFromVisualInfo(dpy, &vinfo);
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if (SDL_ISPIXELFORMAT_INDEXED(pixelformat)) {
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continue; /* Palettized video modes are no longer supported */
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}
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scanline_pad = SDL_BYTESPERPIXEL(pixelformat) * 8;
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pixmapformats = X11_XListPixmapFormats(dpy, &n);
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if (pixmapformats) {
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for (i = 0; i < n; ++i) {
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if (pixmapformats[i].depth == vinfo.depth) {
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scanline_pad = pixmapformats[i].scanline_pad;
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break;
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}
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}
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X11_XFree(pixmapformats);
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}
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res = X11_XRRGetScreenResources(dpy, RootWindow(dpy, screen));
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if (!res) {
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continue;
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}
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for (output = 0; output < res->noutput; output++) {
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XRROutputInfo *output_info;
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int display_x, display_y;
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unsigned long display_mm_width, display_mm_height;
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SDL_DisplayData *displaydata;
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char display_name[128];
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SDL_DisplayMode mode;
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SDL_DisplayModeData *modedata;
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SDL_VideoDisplay display;
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RRMode modeID;
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RRCrtc output_crtc;
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XRRCrtcInfo *crtc;
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/* The primary output _should_ always be sorted first, but just in case... */
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if ((looking_for_primary && ((screen != default_screen) || (res->outputs[output] != primary))) ||
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(!looking_for_primary && (screen == default_screen) && (res->outputs[output] == primary))) {
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continue;
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}
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output_info = X11_XRRGetOutputInfo(dpy, res, res->outputs[output]);
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if (!output_info || !output_info->crtc || output_info->connection == RR_Disconnected) {
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X11_XRRFreeOutputInfo(output_info);
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continue;
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}
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SDL_strlcpy(display_name, output_info->name, sizeof(display_name));
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display_mm_width = output_info->mm_width;
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display_mm_height = output_info->mm_height;
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output_crtc = output_info->crtc;
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X11_XRRFreeOutputInfo(output_info);
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continue;
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crtc = X11_XRRGetCrtcInfo(dpy, res, output_crtc);
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if (!crtc) {
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continue;
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}
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SDL_zero(mode);
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modeID = crtc->mode;
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mode.w = crtc->width;
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mode.h = crtc->height;
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mode.format = pixelformat;
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display_x = crtc->x;
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display_y = crtc->y;
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X11_XRRFreeCrtcInfo(crtc);
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displaydata = (SDL_DisplayData *) SDL_calloc(1, sizeof(*displaydata));
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if (!displaydata) {
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return SDL_OutOfMemory();
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}
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modedata = (SDL_DisplayModeData *) SDL_calloc(1, sizeof(SDL_DisplayModeData));
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if (!modedata) {
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SDL_free(displaydata);
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return SDL_OutOfMemory();
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}
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modedata->xrandr_mode = modeID;
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mode.driverdata = modedata;
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displaydata->screen = screen;
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displaydata->visual = vinfo.visual;
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displaydata->depth = vinfo.depth;
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displaydata->hdpi = ((float) mode.w) * 25.4f / display_mm_width;
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displaydata->vdpi = ((float) mode.h) * 25.4f / display_mm_height;
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displaydata->ddpi = SDL_ComputeDiagonalDPI(mode.w, mode.h, ((float) display_mm_width) / 25.4f,((float) display_mm_height) / 25.4f);
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displaydata->scanline_pad = scanline_pad;
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displaydata->x = display_x;
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displaydata->y = display_y;
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displaydata->use_xrandr = 1;
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displaydata->xrandr_output = res->outputs[output];
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SetXRandRModeInfo(dpy, res, output_crtc, modeID, &mode);
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SetXRandRDisplayName(dpy, EDID, display_name, sizeof (display_name), res->outputs[output], display_mm_width, display_mm_height);
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SDL_zero(display);
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if (*display_name) {
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display.name = display_name;
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}
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display.desktop_mode = mode;
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display.current_mode = mode;
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display.driverdata = displaydata;
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SDL_AddVideoDisplay(&display);
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}
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SDL_strlcpy(display_name, output_info->name, sizeof(display_name));
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display_mm_width = output_info->mm_width;
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display_mm_height = output_info->mm_height;
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output_crtc = output_info->crtc;
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X11_XRRFreeOutputInfo(output_info);
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crtc = X11_XRRGetCrtcInfo(dpy, res, output_crtc);
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if (!crtc) {
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continue;
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}
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SDL_zero(mode);
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modeID = crtc->mode;
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mode.w = crtc->width;
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mode.h = crtc->height;
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mode.format = pixelformat;
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display_x = crtc->x;
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display_y = crtc->y;
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X11_XRRFreeCrtcInfo(crtc);
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displaydata = (SDL_DisplayData *) SDL_calloc(1, sizeof(*displaydata));
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if (!displaydata) {
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return SDL_OutOfMemory();
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}
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modedata = (SDL_DisplayModeData *) SDL_calloc(1, sizeof(SDL_DisplayModeData));
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if (!modedata) {
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SDL_free(displaydata);
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return SDL_OutOfMemory();
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}
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modedata->xrandr_mode = modeID;
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mode.driverdata = modedata;
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displaydata->screen = screen;
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displaydata->visual = vinfo.visual;
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displaydata->depth = vinfo.depth;
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displaydata->hdpi = ((float) mode.w) * 25.4f / display_mm_width;
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displaydata->vdpi = ((float) mode.h) * 25.4f / display_mm_height;
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displaydata->ddpi = SDL_ComputeDiagonalDPI(mode.w, mode.h, ((float) display_mm_width) / 25.4f,((float) display_mm_height) / 25.4f);
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displaydata->scanline_pad = scanline_pad;
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displaydata->x = display_x;
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displaydata->y = display_y;
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displaydata->use_xrandr = 1;
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displaydata->xrandr_output = res->outputs[output];
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SetXRandRModeInfo(dpy, res, output_crtc, modeID, &mode);
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SetXRandRDisplayName(dpy, EDID, display_name, sizeof (display_name), res->outputs[output], display_mm_width, display_mm_height);
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SDL_zero(display);
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if (*display_name) {
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display.name = display_name;
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}
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display.desktop_mode = mode;
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display.current_mode = mode;
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display.driverdata = displaydata;
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SDL_AddVideoDisplay(&display);
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}
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}
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