mirror of
https://github.com/Relintai/sdl2_frt.git
synced 2024-12-16 11:06:49 +01:00
X11: Fixed XRandR display detection.
Previously this only worked on X11 when Xinerama was carrying the weight. Fixes Bugzilla #3062.
This commit is contained in:
Ryan C. Gordon
parent
344fbe61b3
commit
c67213f331
@ -244,10 +244,12 @@ CheckXRandR(Display * display, int *major, int *minor)
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}
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/* Query the extension version */
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*major = 1; *minor = 3; /* we want 1.3 */
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if (!X11_XRRQueryVersion(display, major, minor)) {
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#ifdef X11MODES_DEBUG
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printf("XRandR not active on the display\n");
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#endif
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*major = *minor = 0;
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return SDL_FALSE;
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}
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#ifdef X11MODES_DEBUG
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@ -267,20 +269,20 @@ CalculateXRandRRefreshRate(const XRRModeInfo *info)
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}
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static SDL_bool
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SetXRandRModeInfo(Display *display, XRRScreenResources *res, XRROutputInfo *output_info,
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SetXRandRModeInfo(Display *display, XRRScreenResources *res, RRCrtc crtc,
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RRMode modeID, SDL_DisplayMode *mode)
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{
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int i;
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for (i = 0; i < res->nmode; ++i) {
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if (res->modes[i].id == modeID) {
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XRRCrtcInfo *crtc;
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const XRRModeInfo *info = &res->modes[i];
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if (info->id == modeID) {
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XRRCrtcInfo *crtcinfo;
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Rotation rotation = 0;
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const XRRModeInfo *info = &res->modes[i];
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crtc = X11_XRRGetCrtcInfo(display, res, output_info->crtc);
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if (crtc) {
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rotation = crtc->rotation;
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X11_XRRFreeCrtcInfo(crtc);
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crtcinfo = X11_XRRGetCrtcInfo(display, res, crtc);
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if (crtcinfo) {
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rotation = crtcinfo->rotation;
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X11_XRRFreeCrtcInfo(crtcinfo);
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}
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if (rotation & (XRANDR_ROTATION_LEFT|XRANDR_ROTATION_RIGHT)) {
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@ -300,6 +302,203 @@ SetXRandRModeInfo(Display *display, XRRScreenResources *res, XRROutputInfo *outp
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}
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return SDL_FALSE;
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}
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static void
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SetXRandRDisplayName(Display *dpy, Atom EDID, char *name, const size_t namelen, RROutput output, const unsigned long widthmm, const unsigned long heightmm)
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{
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/* See if we can get the EDID data for the real monitor name */
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int inches;
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int nprop;
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Atom *props = X11_XRRListOutputProperties(dpy, output, &nprop);
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int i;
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for (i = 0; i < nprop; ++i) {
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unsigned char *prop;
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int actual_format;
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unsigned long nitems, bytes_after;
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Atom actual_type;
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if (props[i] == EDID) {
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if (X11_XRRGetOutputProperty(dpy, output, props[i], 0, 100, False,
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False, AnyPropertyType, &actual_type,
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&actual_format, &nitems, &bytes_after,
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&prop) == Success) {
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MonitorInfo *info = decode_edid(prop);
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if (info) {
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#ifdef X11MODES_DEBUG
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printf("Found EDID data for %s\n", name);
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dump_monitor_info(info);
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#endif
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SDL_strlcpy(name, info->dsc_product_name, namelen);
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free(info);
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}
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X11_XFree(prop);
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}
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break;
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}
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}
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if (props) {
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X11_XFree(props);
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}
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inches = (int)((SDL_sqrt(widthmm * widthmm + heightmm * heightmm) / 25.4f) + 0.5f);
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if (*name && inches) {
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const size_t len = SDL_strlen(name);
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SDL_snprintf(&name[len], namelen-len, " %d\"", inches);
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}
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#ifdef X11MODES_DEBUG
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printf("Display name: %s\n", name);
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#endif
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}
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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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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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XPixmapFormatValues *pixmapformats;
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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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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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/* 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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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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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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X11_XRRFreeScreenResources(res);
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if (_this->num_displays == 0) {
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return SDL_SetError("No available displays");
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}
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return 0;
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}
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#endif /* SDL_VIDEO_DRIVER_X11_XRANDR */
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#if SDL_VIDEO_DRIVER_X11_XVIDMODE
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@ -399,14 +598,24 @@ X11_InitModes(_THIS)
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#endif
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#if SDL_VIDEO_DRIVER_X11_XRANDR
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int xrandr_major, xrandr_minor;
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int use_xrandr = 0;
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XRRScreenResources *res = NULL;
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#endif
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#if SDL_VIDEO_DRIVER_X11_XVIDMODE
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int vm_major, vm_minor;
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int use_vidmode = 0;
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#endif
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/* XRandR is the One True Modern Way to do this on X11. If it's enabled and
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available, don't even look at other ways of doing things. */
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#if SDL_VIDEO_DRIVER_X11_XRANDR
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/* require at least XRandR v1.3 */
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if (CheckXRandR(data->display, &xrandr_major, &xrandr_minor) &&
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(xrandr_major >= 2 || (xrandr_major == 1 && xrandr_minor >= 3))) {
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return X11_InitModes_XRandR(_this);
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}
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#endif /* SDL_VIDEO_DRIVER_X11_XRANDR */
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/* !!! FIXME: eventually remove support for Xinerama and XVidMode (everything below here). */
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#if SDL_VIDEO_DRIVER_X11_XINERAMA
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/* Query Xinerama extention
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* NOTE: This works with Nvidia Twinview correctly, but you need version 302.17 (released on June 2012)
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@ -433,14 +642,6 @@ X11_InitModes(_THIS)
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screencount = ScreenCount(data->display);
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#endif /* SDL_VIDEO_DRIVER_X11_XINERAMA */
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#if SDL_VIDEO_DRIVER_X11_XRANDR
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/* require at least XRandR v1.2 */
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if (CheckXRandR(data->display, &xrandr_major, &xrandr_minor) &&
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(xrandr_major >= 2 || (xrandr_major == 1 && xrandr_minor >= 2))) {
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use_xrandr = xrandr_major * 100 + xrandr_minor;
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}
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#endif /* SDL_VIDEO_DRIVER_X11_XRANDR */
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#if SDL_VIDEO_DRIVER_X11_XVIDMODE
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if (CheckVidMode(data->display, &vm_major, &vm_minor)) {
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use_vidmode = vm_major * 100 + vm_minor;
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@ -569,106 +770,6 @@ X11_InitModes(_THIS)
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displaydata->y = 0;
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}
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#if SDL_VIDEO_DRIVER_X11_XRANDR
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if (use_xrandr) {
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res = X11_XRRGetScreenResources(data->display, RootWindow(data->display, displaydata->screen));
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}
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if (res) {
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XRROutputInfo *output_info;
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XRRCrtcInfo *crtc;
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int output;
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Atom EDID = X11_XInternAtom(data->display, "EDID", False);
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Atom *props;
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int nprop;
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unsigned long width_mm;
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unsigned long height_mm;
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int inches = 0;
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for (output = 0; output < res->noutput; output++) {
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output_info = X11_XRRGetOutputInfo(data->display, res, res->outputs[output]);
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if (!output_info || !output_info->crtc ||
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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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/* Is this the output that corresponds to the current screen?
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We're checking the crtc position, but that may not be a valid test
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in all cases. Anybody want to give this some love?
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*/
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crtc = X11_XRRGetCrtcInfo(data->display, res, output_info->crtc);
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if (!crtc || crtc->x != displaydata->x || crtc->y != displaydata->y ||
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crtc->width != mode.w || crtc->height != mode.h) {
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X11_XRRFreeOutputInfo(output_info);
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X11_XRRFreeCrtcInfo(crtc);
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continue;
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}
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displaydata->use_xrandr = use_xrandr;
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displaydata->xrandr_output = res->outputs[output];
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SetXRandRModeInfo(data->display, res, output_info, crtc->mode, &mode);
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/* Get the name of this display */
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width_mm = output_info->mm_width;
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height_mm = output_info->mm_height;
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inches = (int)((sqrt(width_mm * width_mm +
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height_mm * height_mm) / 25.4f) + 0.5f);
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SDL_strlcpy(display_name, output_info->name, sizeof(display_name));
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/* See if we can get the EDID data for the real monitor name */
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props = X11_XRRListOutputProperties(data->display, res->outputs[output], &nprop);
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for (i = 0; i < nprop; ++i) {
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unsigned char *prop;
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int actual_format;
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unsigned long nitems, bytes_after;
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Atom actual_type;
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if (props[i] == EDID) {
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if (X11_XRRGetOutputProperty(data->display,
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res->outputs[output], props[i],
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0, 100, False, False,
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AnyPropertyType,
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&actual_type, &actual_format,
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&nitems, &bytes_after, &prop) == Success ) {
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MonitorInfo *info = decode_edid(prop);
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if (info) {
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#ifdef X11MODES_DEBUG
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printf("Found EDID data for %s\n", output_info->name);
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dump_monitor_info(info);
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#endif
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SDL_strlcpy(display_name, info->dsc_product_name, sizeof(display_name));
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free(info);
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}
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X11_XFree(prop);
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}
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break;
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}
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}
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if (props) {
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X11_XFree(props);
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}
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if (*display_name && inches) {
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size_t len = SDL_strlen(display_name);
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SDL_snprintf(&display_name[len], sizeof(display_name)-len, " %d\"", inches);
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}
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#ifdef X11MODES_DEBUG
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printf("Display name: %s\n", display_name);
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#endif
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X11_XRRFreeOutputInfo(output_info);
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X11_XRRFreeCrtcInfo(crtc);
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break;
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}
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#ifdef X11MODES_DEBUG
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if (output == res->noutput) {
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printf("Couldn't find XRandR CRTC at %d,%d\n", displaydata->x, displaydata->y);
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}
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#endif
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X11_XRRFreeScreenResources(res);
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}
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#endif /* SDL_VIDEO_DRIVER_X11_XRANDR */
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#if SDL_VIDEO_DRIVER_X11_XVIDMODE
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if (!displaydata->use_xrandr &&
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#if SDL_VIDEO_DRIVER_X11_XINERAMA
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@ -791,7 +892,7 @@ X11_GetDisplayModes(_THIS, SDL_VideoDisplay * sdl_display)
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}
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mode.driverdata = modedata;
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if (!SetXRandRModeInfo(display, res, output_info, output_info->modes[i], &mode) ||
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if (!SetXRandRModeInfo(display, res, output_info->crtc, output_info->modes[i], &mode) ||
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!SDL_AddDisplayMode(sdl_display, &mode)) {
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SDL_free(modedata);
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}
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@ -283,6 +283,7 @@ SDL_X11_SYM(Status,XRRSetCrtcConfig,(Display *dpy, XRRScreenResources *resources
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SDL_X11_SYM(Atom*,XRRListOutputProperties,(Display *dpy, RROutput output, int *nprop),(dpy,output,nprop),return)
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SDL_X11_SYM(XRRPropertyInfo*,XRRQueryOutputProperty,(Display *dpy,RROutput output, Atom property),(dpy,output,property),return)
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SDL_X11_SYM(int,XRRGetOutputProperty,(Display *dpy,RROutput output, Atom property, long offset, long length, Bool _delete, Bool pending, Atom req_type, Atom *actual_type, int *actual_format, unsigned long *nitems, unsigned long *bytes_after, unsigned char **prop),(dpy,output,property,offset,length, _delete, pending, req_type, actual_type, actual_format, nitems, bytes_after, prop),return)
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SDL_X11_SYM(RROutput,XRRGetOutputPrimary,(Display *dpy,Window window),(dpy,window),return)
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#endif
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/* MIT-SCREEN-SAVER support */
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