diff options
Diffstat (limited to 'Source/external/SDL2/src/video/x11/SDL_x11modes.c')
| -rw-r--r-- | Source/external/SDL2/src/video/x11/SDL_x11modes.c | 1112 |
1 files changed, 1112 insertions, 0 deletions
diff --git a/Source/external/SDL2/src/video/x11/SDL_x11modes.c b/Source/external/SDL2/src/video/x11/SDL_x11modes.c new file mode 100644 index 0000000..5eafe73 --- /dev/null +++ b/Source/external/SDL2/src/video/x11/SDL_x11modes.c @@ -0,0 +1,1112 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org> + + This software is provided 'as-is', without any express or implied + warranty. In no event will the authors be held liable for any damages + arising from the use of this software. + + Permission is granted to anyone to use this software for any purpose, + including commercial applications, and to alter it and redistribute it + freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + 3. This notice may not be removed or altered from any source distribution. +*/ +#include "../../SDL_internal.h" + +#if SDL_VIDEO_DRIVER_X11 + +#include "SDL_hints.h" +#include "SDL_x11video.h" +#include "SDL_timer.h" +#include "edid.h" + +/* #define X11MODES_DEBUG */ + +/* I'm becoming more and more convinced that the application should never + * use XRandR, and it's the window manager's responsibility to track and + * manage display modes for fullscreen windows. Right now XRandR is completely + * broken with respect to window manager behavior on every window manager that + * I can find. For example, on Unity 3D if you show a fullscreen window while + * the resolution is changing (within ~250 ms) your window will retain the + * fullscreen state hint but be decorated and windowed. + * + * However, many people swear by it, so let them swear at it. :) +*/ +/* #define XRANDR_DISABLED_BY_DEFAULT */ + + +static int +get_visualinfo(Display * display, int screen, XVisualInfo * vinfo) +{ + const char *visual_id = SDL_getenv("SDL_VIDEO_X11_VISUALID"); + int depth; + + /* Look for an exact visual, if requested */ + if (visual_id) { + XVisualInfo *vi, template; + int nvis; + + SDL_zero(template); + template.visualid = SDL_strtol(visual_id, NULL, 0); + vi = X11_XGetVisualInfo(display, VisualIDMask, &template, &nvis); + if (vi) { + *vinfo = *vi; + X11_XFree(vi); + return 0; + } + } + + depth = DefaultDepth(display, screen); + if ((X11_UseDirectColorVisuals() && + X11_XMatchVisualInfo(display, screen, depth, DirectColor, vinfo)) || + X11_XMatchVisualInfo(display, screen, depth, TrueColor, vinfo) || + X11_XMatchVisualInfo(display, screen, depth, PseudoColor, vinfo) || + X11_XMatchVisualInfo(display, screen, depth, StaticColor, vinfo)) { + return 0; + } + return -1; +} + +int +X11_GetVisualInfoFromVisual(Display * display, Visual * visual, XVisualInfo * vinfo) +{ + XVisualInfo *vi; + int nvis; + + vinfo->visualid = X11_XVisualIDFromVisual(visual); + vi = X11_XGetVisualInfo(display, VisualIDMask, vinfo, &nvis); + if (vi) { + *vinfo = *vi; + X11_XFree(vi); + return 0; + } + return -1; +} + +Uint32 +X11_GetPixelFormatFromVisualInfo(Display * display, XVisualInfo * vinfo) +{ + if (vinfo->class == DirectColor || vinfo->class == TrueColor) { + int bpp; + Uint32 Rmask, Gmask, Bmask, Amask; + + Rmask = vinfo->visual->red_mask; + Gmask = vinfo->visual->green_mask; + Bmask = vinfo->visual->blue_mask; + if (vinfo->depth == 32) { + Amask = (0xFFFFFFFF & ~(Rmask | Gmask | Bmask)); + } else { + Amask = 0; + } + + bpp = vinfo->depth; + if (bpp == 24) { + int i, n; + XPixmapFormatValues *p = X11_XListPixmapFormats(display, &n); + if (p) { + for (i = 0; i < n; ++i) { + if (p[i].depth == 24) { + bpp = p[i].bits_per_pixel; + break; + } + } + X11_XFree(p); + } + } + + return SDL_MasksToPixelFormatEnum(bpp, Rmask, Gmask, Bmask, Amask); + } + + if (vinfo->class == PseudoColor || vinfo->class == StaticColor) { + switch (vinfo->depth) { + case 8: + return SDL_PIXELTYPE_INDEX8; + case 4: + if (BitmapBitOrder(display) == LSBFirst) { + return SDL_PIXELFORMAT_INDEX4LSB; + } else { + return SDL_PIXELFORMAT_INDEX4MSB; + } + /* break; -Wunreachable-code-break */ + case 1: + if (BitmapBitOrder(display) == LSBFirst) { + return SDL_PIXELFORMAT_INDEX1LSB; + } else { + return SDL_PIXELFORMAT_INDEX1MSB; + } + /* break; -Wunreachable-code-break */ + } + } + + return SDL_PIXELFORMAT_UNKNOWN; +} + +#if SDL_VIDEO_DRIVER_X11_XINERAMA +static SDL_bool +CheckXinerama(Display * display, int *major, int *minor) +{ + int event_base = 0; + int error_base = 0; + + /* Default the extension not available */ + *major = *minor = 0; + + /* Allow environment override */ + if (!SDL_GetHintBoolean(SDL_HINT_VIDEO_X11_XINERAMA, SDL_TRUE)) { +#ifdef X11MODES_DEBUG + printf("Xinerama disabled due to hint\n"); +#endif + return SDL_FALSE; + } + + if (!SDL_X11_HAVE_XINERAMA) { +#ifdef X11MODES_DEBUG + printf("Xinerama support not available\n"); +#endif + return SDL_FALSE; + } + + /* Query the extension version */ + if (!X11_XineramaQueryExtension(display, &event_base, &error_base) || + !X11_XineramaQueryVersion(display, major, minor) || + !X11_XineramaIsActive(display)) { +#ifdef X11MODES_DEBUG + printf("Xinerama not active on the display\n"); +#endif + return SDL_FALSE; + } +#ifdef X11MODES_DEBUG + printf("Xinerama available at version %d.%d!\n", *major, *minor); +#endif + return SDL_TRUE; +} + +/* !!! FIXME: remove this later. */ +/* we have a weird bug where XineramaQueryScreens() throws an X error, so this + is here to help track it down (and not crash, too!). */ +static SDL_bool xinerama_triggered_error = SDL_FALSE; +static int +X11_XineramaFailed(Display * d, XErrorEvent * e) +{ + xinerama_triggered_error = SDL_TRUE; + fprintf(stderr, "XINERAMA X ERROR: type=%d serial=%lu err=%u req=%u minor=%u\n", + e->type, e->serial, (unsigned int) e->error_code, + (unsigned int) e->request_code, (unsigned int) e->minor_code); + fflush(stderr); + return 0; +} +#endif /* SDL_VIDEO_DRIVER_X11_XINERAMA */ + +#if SDL_VIDEO_DRIVER_X11_XRANDR +static SDL_bool +CheckXRandR(Display * display, int *major, int *minor) +{ + /* Default the extension not available */ + *major = *minor = 0; + + /* Allow environment override */ +#ifdef XRANDR_DISABLED_BY_DEFAULT + if (!SDL_GetHintBoolean(SDL_HINT_VIDEO_X11_XRANDR, SDL_FALSE)) { +#ifdef X11MODES_DEBUG + printf("XRandR disabled by default due to window manager issues\n"); +#endif + return SDL_FALSE; + } +#else + if (!SDL_GetHintBoolean(SDL_HINT_VIDEO_X11_XRANDR, SDL_TRUE)) { +#ifdef X11MODES_DEBUG + printf("XRandR disabled due to hint\n"); +#endif + return SDL_FALSE; + } +#endif /* XRANDR_ENABLED_BY_DEFAULT */ + + if (!SDL_X11_HAVE_XRANDR) { +#ifdef X11MODES_DEBUG + printf("XRandR support not available\n"); +#endif + return SDL_FALSE; + } + + /* Query the extension version */ + *major = 1; *minor = 3; /* we want 1.3 */ + if (!X11_XRRQueryVersion(display, major, minor)) { +#ifdef X11MODES_DEBUG + printf("XRandR not active on the display\n"); +#endif + *major = *minor = 0; + return SDL_FALSE; + } +#ifdef X11MODES_DEBUG + printf("XRandR available at version %d.%d!\n", *major, *minor); +#endif + return SDL_TRUE; +} + +#define XRANDR_ROTATION_LEFT (1 << 1) +#define XRANDR_ROTATION_RIGHT (1 << 3) + +static int +CalculateXRandRRefreshRate(const XRRModeInfo *info) +{ + return (info->hTotal && info->vTotal) ? + round(((double)info->dotClock / (double)(info->hTotal * info->vTotal))) : 0; +} + +static SDL_bool +SetXRandRModeInfo(Display *display, XRRScreenResources *res, RRCrtc crtc, + RRMode modeID, SDL_DisplayMode *mode) +{ + int i; + for (i = 0; i < res->nmode; ++i) { + const XRRModeInfo *info = &res->modes[i]; + if (info->id == modeID) { + XRRCrtcInfo *crtcinfo; + Rotation rotation = 0; + + crtcinfo = X11_XRRGetCrtcInfo(display, res, crtc); + if (crtcinfo) { + rotation = crtcinfo->rotation; + X11_XRRFreeCrtcInfo(crtcinfo); + } + + if (rotation & (XRANDR_ROTATION_LEFT|XRANDR_ROTATION_RIGHT)) { + mode->w = info->height; + mode->h = info->width; + } else { + mode->w = info->width; + mode->h = info->height; + } + mode->refresh_rate = CalculateXRandRRefreshRate(info); + ((SDL_DisplayModeData*)mode->driverdata)->xrandr_mode = modeID; +#ifdef X11MODES_DEBUG + printf("XRandR mode %d: %dx%d@%dHz\n", (int) modeID, mode->w, mode->h, mode->refresh_rate); +#endif + return SDL_TRUE; + } + } + return SDL_FALSE; +} + +static void +SetXRandRDisplayName(Display *dpy, Atom EDID, char *name, const size_t namelen, RROutput output, const unsigned long widthmm, const unsigned long heightmm) +{ + /* See if we can get the EDID data for the real monitor name */ + int inches; + int nprop; + Atom *props = X11_XRRListOutputProperties(dpy, output, &nprop); + int i; + + for (i = 0; i < nprop; ++i) { + unsigned char *prop; + int actual_format; + unsigned long nitems, bytes_after; + Atom actual_type; + + if (props[i] == EDID) { + if (X11_XRRGetOutputProperty(dpy, output, props[i], 0, 100, False, + False, AnyPropertyType, &actual_type, + &actual_format, &nitems, &bytes_after, + &prop) == Success) { + MonitorInfo *info = decode_edid(prop); + if (info) { +#ifdef X11MODES_DEBUG + printf("Found EDID data for %s\n", name); + dump_monitor_info(info); +#endif + SDL_strlcpy(name, info->dsc_product_name, namelen); + free(info); + } + X11_XFree(prop); + } + break; + } + } + + if (props) { + X11_XFree(props); + } + + inches = (int)((SDL_sqrtf(widthmm * widthmm + heightmm * heightmm) / 25.4f) + 0.5f); + if (*name && inches) { + const size_t len = SDL_strlen(name); + SDL_snprintf(&name[len], namelen-len, " %d\"", inches); + } + +#ifdef X11MODES_DEBUG + printf("Display name: %s\n", name); +#endif +} + + +static int +X11_InitModes_XRandR(_THIS) +{ + 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); + XRRScreenResources *res = NULL; + Uint32 pixelformat; + XVisualInfo vinfo; + XPixmapFormatValues *pixmapformats; + int looking_for_primary; + int scanline_pad; + int output; + 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)) { + continue; + } + + if (get_visualinfo(dpy, screen, &vinfo) < 0) { + continue; /* uh, skip this screen? */ + } + + pixelformat = X11_GetPixelFormatFromVisualInfo(dpy, &vinfo); + if (SDL_ISPIXELFORMAT_INDEXED(pixelformat)) { + continue; /* Palettized video modes are no longer supported */ + } + + scanline_pad = SDL_BYTESPERPIXEL(pixelformat) * 8; + pixmapformats = X11_XListPixmapFormats(dpy, &n); + if (pixmapformats) { + for (i = 0; i < n; ++i) { + if (pixmapformats[i].depth == vinfo.depth) { + scanline_pad = pixmapformats[i].scanline_pad; + break; + } + } + X11_XFree(pixmapformats); + } + + res = X11_XRRGetScreenResourcesCurrent(dpy, RootWindow(dpy, screen)); + if (!res || res->noutput == 0) { + if (res) { + X11_XRRFreeScreenResources(res); + } + + res = X11_XRRGetScreenResources(dpy, RootWindow(dpy, screen)); + if (!res) { + continue; + } + } + + for (output = 0; output < res->noutput; output++) { + XRROutputInfo *output_info; + int display_x, display_y; + unsigned long display_mm_width, display_mm_height; + SDL_DisplayData *displaydata; + char display_name[128]; + SDL_DisplayMode mode; + SDL_DisplayModeData *modedata; + SDL_VideoDisplay display; + RRMode modeID; + RRCrtc output_crtc; + 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 && (screen == default_screen) && (res->outputs[output] == primary))) { + continue; + } + + output_info = X11_XRRGetOutputInfo(dpy, res, res->outputs[output]); + if (!output_info || !output_info->crtc || output_info->connection == RR_Disconnected) { + X11_XRRFreeOutputInfo(output_info); + continue; + } + + SDL_strlcpy(display_name, output_info->name, sizeof(display_name)); + display_mm_width = output_info->mm_width; + display_mm_height = output_info->mm_height; + output_crtc = output_info->crtc; + X11_XRRFreeOutputInfo(output_info); + + crtc = X11_XRRGetCrtcInfo(dpy, res, output_crtc); + if (!crtc) { + continue; + } + + SDL_zero(mode); + modeID = crtc->mode; + mode.w = crtc->width; + mode.h = crtc->height; + mode.format = pixelformat; + + display_x = crtc->x; + display_y = crtc->y; + + X11_XRRFreeCrtcInfo(crtc); + + displaydata = (SDL_DisplayData *) SDL_calloc(1, sizeof(*displaydata)); + if (!displaydata) { + return SDL_OutOfMemory(); + } + + modedata = (SDL_DisplayModeData *) SDL_calloc(1, sizeof(SDL_DisplayModeData)); + if (!modedata) { + SDL_free(displaydata); + return SDL_OutOfMemory(); + } + modedata->xrandr_mode = modeID; + mode.driverdata = modedata; + + displaydata->screen = screen; + displaydata->visual = vinfo.visual; + displaydata->depth = vinfo.depth; + displaydata->hdpi = display_mm_width ? (((float) mode.w) * 25.4f / display_mm_width) : 0.0f; + displaydata->vdpi = display_mm_height ? (((float) mode.h) * 25.4f / display_mm_height) : 0.0f; + displaydata->ddpi = SDL_ComputeDiagonalDPI(mode.w, mode.h, ((float) display_mm_width) / 25.4f,((float) display_mm_height) / 25.4f); + displaydata->scanline_pad = scanline_pad; + displaydata->x = display_x; + displaydata->y = display_y; + displaydata->use_xrandr = 1; + displaydata->xrandr_output = res->outputs[output]; + + SetXRandRModeInfo(dpy, res, output_crtc, modeID, &mode); + SetXRandRDisplayName(dpy, EDID, display_name, sizeof (display_name), res->outputs[output], display_mm_width, display_mm_height); + + SDL_zero(display); + if (*display_name) { + display.name = display_name; + } + display.desktop_mode = mode; + display.current_mode = mode; + display.driverdata = displaydata; + SDL_AddVideoDisplay(&display); + } + + X11_XRRFreeScreenResources(res); + } + } + + if (_this->num_displays == 0) { + return SDL_SetError("No available displays"); + } + + return 0; +} +#endif /* SDL_VIDEO_DRIVER_X11_XRANDR */ + +#if SDL_VIDEO_DRIVER_X11_XVIDMODE +static SDL_bool +CheckVidMode(Display * display, int *major, int *minor) +{ + int vm_event, vm_error = -1; + /* Default the extension not available */ + *major = *minor = 0; + + /* Allow environment override */ + if (!SDL_GetHintBoolean(SDL_HINT_VIDEO_X11_XVIDMODE, SDL_TRUE)) { +#ifdef X11MODES_DEBUG + printf("XVidMode disabled due to hint\n"); +#endif + return SDL_FALSE; + } + + if (!SDL_X11_HAVE_XVIDMODE) { +#ifdef X11MODES_DEBUG + printf("XVidMode support not available\n"); +#endif + return SDL_FALSE; + } + + /* Query the extension version */ + if (!X11_XF86VidModeQueryExtension(display, &vm_event, &vm_error) + || !X11_XF86VidModeQueryVersion(display, major, minor)) { +#ifdef X11MODES_DEBUG + printf("XVidMode not active on the display\n"); +#endif + return SDL_FALSE; + } +#ifdef X11MODES_DEBUG + printf("XVidMode available at version %d.%d!\n", *major, *minor); +#endif + return SDL_TRUE; +} + +static +Bool XF86VidModeGetModeInfo(Display * dpy, int scr, + XF86VidModeModeInfo* info) +{ + Bool retval; + int dotclock; + XF86VidModeModeLine l; + SDL_zerop(info); + SDL_zero(l); + retval = X11_XF86VidModeGetModeLine(dpy, scr, &dotclock, &l); + info->dotclock = dotclock; + info->hdisplay = l.hdisplay; + info->hsyncstart = l.hsyncstart; + info->hsyncend = l.hsyncend; + info->htotal = l.htotal; + info->hskew = l.hskew; + info->vdisplay = l.vdisplay; + info->vsyncstart = l.vsyncstart; + info->vsyncend = l.vsyncend; + info->vtotal = l.vtotal; + info->flags = l.flags; + info->privsize = l.privsize; + info->private = l.private; + return retval; +} + +static int +CalculateXVidModeRefreshRate(const XF86VidModeModeInfo * info) +{ + return (info->htotal + && info->vtotal) ? (1000 * info->dotclock / (info->htotal * + info->vtotal)) : 0; +} + +static SDL_bool +SetXVidModeModeInfo(const XF86VidModeModeInfo *info, SDL_DisplayMode *mode) +{ + mode->w = info->hdisplay; + mode->h = info->vdisplay; + mode->refresh_rate = CalculateXVidModeRefreshRate(info); + ((SDL_DisplayModeData*)mode->driverdata)->vm_mode = *info; + return SDL_TRUE; +} +#endif /* SDL_VIDEO_DRIVER_X11_XVIDMODE */ + +int +X11_InitModes(_THIS) +{ + SDL_VideoData *data = (SDL_VideoData *) _this->driverdata; + int snum, screen, screencount = 0; +#if SDL_VIDEO_DRIVER_X11_XINERAMA + int xinerama_major, xinerama_minor; + int use_xinerama = 0; + XineramaScreenInfo *xinerama = NULL; +#endif +#if SDL_VIDEO_DRIVER_X11_XRANDR + int xrandr_major, xrandr_minor; +#endif +#if SDL_VIDEO_DRIVER_X11_XVIDMODE + int vm_major, vm_minor; + int use_vidmode = 0; +#endif + +/* XRandR is the One True Modern Way to do this on X11. If it's enabled and + available, don't even look at other ways of doing things. */ +#if SDL_VIDEO_DRIVER_X11_XRANDR + /* require at least XRandR v1.3 */ + if (CheckXRandR(data->display, &xrandr_major, &xrandr_minor) && + (xrandr_major >= 2 || (xrandr_major == 1 && xrandr_minor >= 3))) { + if (X11_InitModes_XRandR(_this) == 0) + return 0; + } +#endif /* SDL_VIDEO_DRIVER_X11_XRANDR */ + +/* !!! FIXME: eventually remove support for Xinerama and XVidMode (everything below here). */ + + /* This is a workaround for some apps (UnrealEngine4, for example) until + we sort out the ramifications of removing XVidMode support outright. + This block should be removed with the XVidMode support. */ + { + if (SDL_GetHintBoolean("SDL_VIDEO_X11_REQUIRE_XRANDR", SDL_FALSE)) { + #if SDL_VIDEO_DRIVER_X11_XRANDR + return SDL_SetError("XRandR support is required but not available"); + #else + return SDL_SetError("XRandR support is required but not built into SDL!"); + #endif + } + } + +#if SDL_VIDEO_DRIVER_X11_XINERAMA + /* Query Xinerama extention + * NOTE: This works with Nvidia Twinview correctly, but you need version 302.17 (released on June 2012) + * or newer of the Nvidia binary drivers + */ + if (CheckXinerama(data->display, &xinerama_major, &xinerama_minor)) { + int (*handler) (Display *, XErrorEvent *); + X11_XSync(data->display, False); + handler = X11_XSetErrorHandler(X11_XineramaFailed); + xinerama = X11_XineramaQueryScreens(data->display, &screencount); + X11_XSync(data->display, False); + X11_XSetErrorHandler(handler); + if (xinerama_triggered_error) { + xinerama = 0; + } + if (xinerama) { + use_xinerama = xinerama_major * 100 + xinerama_minor; + } + } + if (!xinerama) { + screencount = ScreenCount(data->display); + } +#else + screencount = ScreenCount(data->display); +#endif /* SDL_VIDEO_DRIVER_X11_XINERAMA */ + +#if SDL_VIDEO_DRIVER_X11_XVIDMODE + if (CheckVidMode(data->display, &vm_major, &vm_minor)) { + use_vidmode = vm_major * 100 + vm_minor; + } +#endif /* SDL_VIDEO_DRIVER_X11_XVIDMODE */ + + for (snum = 0; snum < screencount; ++snum) { + XVisualInfo vinfo; + SDL_VideoDisplay display; + SDL_DisplayData *displaydata; + SDL_DisplayMode mode; + SDL_DisplayModeData *modedata; + XPixmapFormatValues *pixmapFormats; + char display_name[128]; + int i, n; + + /* Re-order screens to always put default screen first */ + if (snum == 0) { + screen = DefaultScreen(data->display); + } else if (snum == DefaultScreen(data->display)) { + screen = 0; + } else { + screen = snum; + } + +#if SDL_VIDEO_DRIVER_X11_XINERAMA + if (xinerama) { + if (get_visualinfo(data->display, 0, &vinfo) < 0) { + continue; + } + } else { + if (get_visualinfo(data->display, screen, &vinfo) < 0) { + continue; + } + } +#else + if (get_visualinfo(data->display, screen, &vinfo) < 0) { + continue; + } +#endif + + displaydata = (SDL_DisplayData *) SDL_calloc(1, sizeof(*displaydata)); + if (!displaydata) { + continue; + } + display_name[0] = '\0'; + + mode.format = X11_GetPixelFormatFromVisualInfo(data->display, &vinfo); + if (SDL_ISPIXELFORMAT_INDEXED(mode.format)) { + /* We don't support palettized modes now */ + SDL_free(displaydata); + continue; + } +#if SDL_VIDEO_DRIVER_X11_XINERAMA + if (xinerama) { + mode.w = xinerama[screen].width; + mode.h = xinerama[screen].height; + } else { + mode.w = DisplayWidth(data->display, screen); + mode.h = DisplayHeight(data->display, screen); + } +#else + mode.w = DisplayWidth(data->display, screen); + mode.h = DisplayHeight(data->display, screen); +#endif + mode.refresh_rate = 0; + + modedata = (SDL_DisplayModeData *) SDL_calloc(1, sizeof(SDL_DisplayModeData)); + if (!modedata) { + SDL_free(displaydata); + continue; + } + mode.driverdata = modedata; + +#if SDL_VIDEO_DRIVER_X11_XINERAMA + /* Most of SDL's calls to X11 are unwaware of Xinerama, and to X11 standard calls, when Xinerama is active, + * there's only one screen available. So we force the screen number to zero and + * let Xinerama specific code handle specific functionality using displaydata->xinerama_info + */ + if (use_xinerama) { + displaydata->screen = 0; + displaydata->use_xinerama = use_xinerama; + displaydata->xinerama_info = xinerama[screen]; + displaydata->xinerama_screen = screen; + } + else displaydata->screen = screen; +#else + displaydata->screen = screen; +#endif + displaydata->visual = vinfo.visual; + displaydata->depth = vinfo.depth; + + /* We use the displaydata screen index here so that this works + for both the Xinerama case, where we get the overall DPI, + and the regular X11 screen info case. */ + displaydata->hdpi = (float)DisplayWidth(data->display, displaydata->screen) * 25.4f / + DisplayWidthMM(data->display, displaydata->screen); + displaydata->vdpi = (float)DisplayHeight(data->display, displaydata->screen) * 25.4f / + DisplayHeightMM(data->display, displaydata->screen); + displaydata->ddpi = SDL_ComputeDiagonalDPI(DisplayWidth(data->display, displaydata->screen), + DisplayHeight(data->display, displaydata->screen), + (float)DisplayWidthMM(data->display, displaydata->screen) / 25.4f, + (float)DisplayHeightMM(data->display, displaydata->screen) / 25.4f); + + displaydata->scanline_pad = SDL_BYTESPERPIXEL(mode.format) * 8; + pixmapFormats = X11_XListPixmapFormats(data->display, &n); + if (pixmapFormats) { + for (i = 0; i < n; ++i) { + if (pixmapFormats[i].depth == displaydata->depth) { + displaydata->scanline_pad = pixmapFormats[i].scanline_pad; + break; + } + } + X11_XFree(pixmapFormats); + } + +#if SDL_VIDEO_DRIVER_X11_XINERAMA + if (use_xinerama) { + displaydata->x = xinerama[screen].x_org; + displaydata->y = xinerama[screen].y_org; + } + else +#endif + { + displaydata->x = 0; + displaydata->y = 0; + } + +#if SDL_VIDEO_DRIVER_X11_XVIDMODE + if (!displaydata->use_xrandr && +#if SDL_VIDEO_DRIVER_X11_XINERAMA + /* XVidMode only works on the screen at the origin */ + (!displaydata->use_xinerama || + (displaydata->x == 0 && displaydata->y == 0)) && +#endif + use_vidmode) { + displaydata->use_vidmode = use_vidmode; + if (displaydata->use_xinerama) { + displaydata->vidmode_screen = 0; + } else { + displaydata->vidmode_screen = screen; + } + XF86VidModeGetModeInfo(data->display, displaydata->vidmode_screen, &modedata->vm_mode); + } +#endif /* SDL_VIDEO_DRIVER_X11_XVIDMODE */ + + SDL_zero(display); + if (*display_name) { + display.name = display_name; + } + display.desktop_mode = mode; + display.current_mode = mode; + display.driverdata = displaydata; + SDL_AddVideoDisplay(&display); + } + +#if SDL_VIDEO_DRIVER_X11_XINERAMA + if (xinerama) X11_XFree(xinerama); +#endif + + if (_this->num_displays == 0) { + return SDL_SetError("No available displays"); + } + return 0; +} + +void +X11_GetDisplayModes(_THIS, SDL_VideoDisplay * sdl_display) +{ + Display *display = ((SDL_VideoData *) _this->driverdata)->display; + SDL_DisplayData *data = (SDL_DisplayData *) sdl_display->driverdata; +#if SDL_VIDEO_DRIVER_X11_XVIDMODE + int nmodes; + XF86VidModeModeInfo ** modes; +#endif + SDL_DisplayMode mode; + + /* Unfortunately X11 requires the window to be created with the correct + * visual and depth ahead of time, but the SDL API allows you to create + * a window before setting the fullscreen display mode. This means that + * we have to use the same format for all windows and all display modes. + * (or support recreating the window with a new visual behind the scenes) + */ + mode.format = sdl_display->current_mode.format; + mode.driverdata = NULL; + +#if SDL_VIDEO_DRIVER_X11_XINERAMA + if (data->use_xinerama) { + int screen_w; + int screen_h; + + screen_w = DisplayWidth(display, data->screen); + screen_h = DisplayHeight(display, data->screen); + + if (data->use_vidmode && !data->xinerama_info.x_org && !data->xinerama_info.y_org && + (screen_w > data->xinerama_info.width || screen_h > data->xinerama_info.height)) { + SDL_DisplayModeData *modedata; + /* Add the full (both screens combined) xinerama mode only on the display that starts at 0,0 + * if we're using vidmode. + */ + mode.w = screen_w; + mode.h = screen_h; + mode.refresh_rate = 0; + modedata = (SDL_DisplayModeData *) SDL_calloc(1, sizeof(SDL_DisplayModeData)); + if (modedata) { + *modedata = *(SDL_DisplayModeData *)sdl_display->desktop_mode.driverdata; + } + mode.driverdata = modedata; + if (!SDL_AddDisplayMode(sdl_display, &mode)) { + SDL_free(modedata); + } + } + else if (!data->use_xrandr) + { + SDL_DisplayModeData *modedata; + /* Add the current mode of each monitor otherwise if we can't get them from xrandr */ + mode.w = data->xinerama_info.width; + mode.h = data->xinerama_info.height; + mode.refresh_rate = 0; + modedata = (SDL_DisplayModeData *) SDL_calloc(1, sizeof(SDL_DisplayModeData)); + if (modedata) { + *modedata = *(SDL_DisplayModeData *)sdl_display->desktop_mode.driverdata; + } + mode.driverdata = modedata; + if (!SDL_AddDisplayMode(sdl_display, &mode)) { + SDL_free(modedata); + } + } + + } +#endif /* SDL_VIDEO_DRIVER_X11_XINERAMA */ + +#if SDL_VIDEO_DRIVER_X11_XRANDR + if (data->use_xrandr) { + XRRScreenResources *res; + + res = X11_XRRGetScreenResources (display, RootWindow(display, data->screen)); + if (res) { + SDL_DisplayModeData *modedata; + XRROutputInfo *output_info; + int i; + + output_info = X11_XRRGetOutputInfo(display, res, data->xrandr_output); + if (output_info && output_info->connection != RR_Disconnected) { + for (i = 0; i < output_info->nmode; ++i) { + modedata = (SDL_DisplayModeData *) SDL_calloc(1, sizeof(SDL_DisplayModeData)); + if (!modedata) { + continue; + } + mode.driverdata = modedata; + + if (!SetXRandRModeInfo(display, res, output_info->crtc, output_info->modes[i], &mode) || + !SDL_AddDisplayMode(sdl_display, &mode)) { + SDL_free(modedata); + } + } + } + X11_XRRFreeOutputInfo(output_info); + X11_XRRFreeScreenResources(res); + } + return; + } +#endif /* SDL_VIDEO_DRIVER_X11_XRANDR */ + +#if SDL_VIDEO_DRIVER_X11_XVIDMODE + if (data->use_vidmode && + X11_XF86VidModeGetAllModeLines(display, data->vidmode_screen, &nmodes, &modes)) { + int i; + SDL_DisplayModeData *modedata; + +#ifdef X11MODES_DEBUG + printf("VidMode modes: (unsorted)\n"); + for (i = 0; i < nmodes; ++i) { + printf("Mode %d: %d x %d @ %d, flags: 0x%x\n", i, + modes[i]->hdisplay, modes[i]->vdisplay, + CalculateXVidModeRefreshRate(modes[i]), modes[i]->flags); + } +#endif + for (i = 0; i < nmodes; ++i) { + modedata = (SDL_DisplayModeData *) SDL_calloc(1, sizeof(SDL_DisplayModeData)); + if (!modedata) { + continue; + } + mode.driverdata = modedata; + + if (!SetXVidModeModeInfo(modes[i], &mode) || !SDL_AddDisplayMode(sdl_display, &mode)) { + SDL_free(modedata); + } + } + X11_XFree(modes); + return; + } +#endif /* SDL_VIDEO_DRIVER_X11_XVIDMODE */ + + if (!data->use_xrandr && !data->use_vidmode) { + SDL_DisplayModeData *modedata; + /* Add the desktop mode */ + mode = sdl_display->desktop_mode; + modedata = (SDL_DisplayModeData *) SDL_calloc(1, sizeof(SDL_DisplayModeData)); + if (modedata) { + *modedata = *(SDL_DisplayModeData *)sdl_display->desktop_mode.driverdata; + } + mode.driverdata = modedata; + if (!SDL_AddDisplayMode(sdl_display, &mode)) { + SDL_free(modedata); + } + } +} + +int +X11_SetDisplayMode(_THIS, SDL_VideoDisplay * sdl_display, SDL_DisplayMode * mode) +{ + SDL_VideoData *viddata = (SDL_VideoData *) _this->driverdata; + Display *display = viddata->display; + SDL_DisplayData *data = (SDL_DisplayData *) sdl_display->driverdata; + SDL_DisplayModeData *modedata = (SDL_DisplayModeData *)mode->driverdata; + + viddata->last_mode_change_deadline = SDL_GetTicks() + (PENDING_FOCUS_TIME * 2); + +#if SDL_VIDEO_DRIVER_X11_XRANDR + if (data->use_xrandr) { + XRRScreenResources *res; + XRROutputInfo *output_info; + XRRCrtcInfo *crtc; + Status status; + + res = X11_XRRGetScreenResources (display, RootWindow(display, data->screen)); + if (!res) { + return SDL_SetError("Couldn't get XRandR screen resources"); + } + + output_info = X11_XRRGetOutputInfo(display, res, data->xrandr_output); + if (!output_info || output_info->connection == RR_Disconnected) { + X11_XRRFreeScreenResources(res); + return SDL_SetError("Couldn't get XRandR output info"); + } + + crtc = X11_XRRGetCrtcInfo(display, res, output_info->crtc); + if (!crtc) { + X11_XRRFreeOutputInfo(output_info); + X11_XRRFreeScreenResources(res); + return SDL_SetError("Couldn't get XRandR crtc info"); + } + + status = X11_XRRSetCrtcConfig (display, res, output_info->crtc, CurrentTime, + crtc->x, crtc->y, modedata->xrandr_mode, crtc->rotation, + &data->xrandr_output, 1); + + X11_XRRFreeCrtcInfo(crtc); + X11_XRRFreeOutputInfo(output_info); + X11_XRRFreeScreenResources(res); + + if (status != Success) { + return SDL_SetError("X11_XRRSetCrtcConfig failed"); + } + } +#endif /* SDL_VIDEO_DRIVER_X11_XRANDR */ + +#if SDL_VIDEO_DRIVER_X11_XVIDMODE + if (data->use_vidmode) { + X11_XF86VidModeSwitchToMode(display, data->vidmode_screen, &modedata->vm_mode); + } +#endif /* SDL_VIDEO_DRIVER_X11_XVIDMODE */ + + return 0; +} + +void +X11_QuitModes(_THIS) +{ +} + +int +X11_GetDisplayBounds(_THIS, SDL_VideoDisplay * sdl_display, SDL_Rect * rect) +{ + SDL_DisplayData *data = (SDL_DisplayData *) sdl_display->driverdata; + + rect->x = data->x; + rect->y = data->y; + rect->w = sdl_display->current_mode.w; + rect->h = sdl_display->current_mode.h; + +#if SDL_VIDEO_DRIVER_X11_XINERAMA + /* Get the real current bounds of the display */ + if (data->use_xinerama) { + Display *display = ((SDL_VideoData *) _this->driverdata)->display; + int screencount; + XineramaScreenInfo *xinerama = X11_XineramaQueryScreens(display, &screencount); + if (xinerama) { + rect->x = xinerama[data->xinerama_screen].x_org; + rect->y = xinerama[data->xinerama_screen].y_org; + X11_XFree(xinerama); + } + } +#endif /* SDL_VIDEO_DRIVER_X11_XINERAMA */ + return 0; +} + +int +X11_GetDisplayDPI(_THIS, SDL_VideoDisplay * sdl_display, float * ddpi, float * hdpi, float * vdpi) +{ + SDL_DisplayData *data = (SDL_DisplayData *) sdl_display->driverdata; + + if (ddpi) { + *ddpi = data->ddpi; + } + if (hdpi) { + *hdpi = data->hdpi; + } + if (vdpi) { + *vdpi = data->vdpi; + } + + return data->ddpi != 0.0f ? 0 : SDL_SetError("Couldn't get DPI"); +} + +int +X11_GetDisplayUsableBounds(_THIS, SDL_VideoDisplay * sdl_display, SDL_Rect * rect) +{ + SDL_VideoData *data = (SDL_VideoData *) _this->driverdata; + Display *display = data->display; + Atom _NET_WORKAREA; + int status, real_format; + int retval = -1; + Atom real_type; + unsigned long items_read = 0, items_left = 0; + unsigned char *propdata = NULL; + + if (X11_GetDisplayBounds(_this, sdl_display, rect) < 0) { + return -1; + } + + _NET_WORKAREA = X11_XInternAtom(display, "_NET_WORKAREA", False); + status = X11_XGetWindowProperty(display, DefaultRootWindow(display), + _NET_WORKAREA, 0L, 4L, False, XA_CARDINAL, + &real_type, &real_format, &items_read, + &items_left, &propdata); + if ((status == Success) && (items_read >= 4)) { + const long *p = (long*) propdata; + const SDL_Rect usable = { (int)p[0], (int)p[1], (int)p[2], (int)p[3] }; + retval = 0; + if (!SDL_IntersectRect(rect, &usable, rect)) { + SDL_zerop(rect); + } + } + + if (propdata) { + X11_XFree(propdata); + } + + return retval; +} + +#endif /* SDL_VIDEO_DRIVER_X11 */ + +/* vi: set ts=4 sw=4 expandtab: */ |