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Fixed display detection after the monitor resolution changed on X11

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This commit is contained in:
Sam Lantinga
2024-07-24 17:46:25 -07:00
parent b98e1e9ef0
commit 9e6d5babce
1 changed files with 79 additions and 30 deletions
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109
src/video/x11/SDL_x11modes.c
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@@ -25,6 +25,7 @@
#include "SDL_x11video.h"
#include "SDL_x11settings.h"
#include "edid.h"
#include "../../events/SDL_displayevents_c.h"
/* #define X11MODES_DEBUG */
@@ -529,17 +530,15 @@ static void SetXRandRDisplayName(Display *dpy, Atom EDID, char *name, const size
#endif
}
static int X11_AddXRandRDisplay(SDL_VideoDevice *_this, Display *dpy, int screen, RROutput outputid, XRRScreenResources *res, SDL_bool send_event)
static int X11_FillXRandRDisplayInfo(SDL_VideoDevice *_this, Display *dpy, int screen, RROutput outputid, XRRScreenResources *res, SDL_VideoDisplay *display, char *display_name, size_t display_name_size)
{
Atom EDID = X11_XInternAtom(dpy, "EDID", False);
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;
@@ -549,13 +548,17 @@ static int X11_AddXRandRDisplay(SDL_VideoDevice *_this, Display *dpy, int screen
int scanline_pad;
int i, n;
if (!display || !display_name) {
return -1; /* invalid parameters */
}
if (get_visualinfo(dpy, screen, &vinfo) < 0) {
return 0; /* uh, skip this screen? */
return -1; /* uh, skip this screen? */
}
pixelformat = X11_GetPixelFormatFromVisualInfo(dpy, &vinfo);
if (SDL_ISPIXELFORMAT_INDEXED(pixelformat)) {
return 0; /* Palettized video modes are no longer supported, ignore this one. */
return -1; /* Palettized video modes are no longer supported, ignore this one. */
}
scanline_pad = SDL_BYTESPERPIXEL(pixelformat) * 8;
@@ -573,10 +576,10 @@ static int X11_AddXRandRDisplay(SDL_VideoDevice *_this, Display *dpy, int screen
output_info = X11_XRRGetOutputInfo(dpy, res, outputid);
if (!output_info || !output_info->crtc || output_info->connection == RR_Disconnected) {
X11_XRRFreeOutputInfo(output_info);
return 0; /* ignore this one. */
return -1; /* ignore this one. */
}
SDL_strlcpy(display_name, output_info->name, sizeof(display_name));
SDL_strlcpy(display_name, output_info->name, display_name_size);
display_mm_width = output_info->mm_width;
display_mm_height = output_info->mm_height;
output_crtc = output_info->crtc;
@@ -584,7 +587,7 @@ static int X11_AddXRandRDisplay(SDL_VideoDevice *_this, Display *dpy, int screen
crtc = X11_XRRGetCrtcInfo(dpy, res, output_crtc);
if (!crtc) {
return 0; /* oh well, ignore it. */
return -1; /* oh well, ignore it. */
}
SDL_zero(mode);
@@ -622,18 +625,62 @@ static int X11_AddXRandRDisplay(SDL_VideoDevice *_this, Display *dpy, int screen
displaydata->xrandr_output = outputid;
SetXRandRModeInfo(dpy, res, output_crtc, modeID, &mode);
SetXRandRDisplayName(dpy, EDID, display_name, sizeof(display_name), outputid, display_mm_width, display_mm_height);
SetXRandRDisplayName(dpy, EDID, display_name, display_name_size, outputid, display_mm_width, display_mm_height);
SDL_zero(display);
SDL_zero(*display);
if (*display_name) {
display.name = display_name;
display->name = display_name;
}
display.desktop_mode = mode;
display.content_scale = GetGlobalContentScale(_this);
display.internal = displaydata;
display->desktop_mode = mode;
display->content_scale = GetGlobalContentScale(_this);
display->internal = displaydata;
return 0;
}
static int X11_AddXRandRDisplay(SDL_VideoDevice *_this, Display *dpy, int screen, RROutput outputid, XRRScreenResources *res, SDL_bool send_event)
{
SDL_VideoDisplay display;
char display_name[128];
if (X11_FillXRandRDisplayInfo(_this, dpy, screen, outputid, res, &display, display_name, sizeof(display_name)) == -1) {
return 0; /* failed to query data, skip this display */
}
if (SDL_AddVideoDisplay(&display, send_event) == 0) {
return -1;
}
return 0;
}
static int X11_UpdateXRandRDisplay(SDL_VideoDevice *_this, Display *dpy, int screen, RROutput outputid, XRRScreenResources *res, SDL_VideoDisplay *existing_display)
{
SDL_VideoDisplay display;
char display_name[128];
if (X11_FillXRandRDisplayInfo(_this, dpy, screen, outputid, res, &display, display_name, sizeof(display_name)) == -1) {
return -1; /* failed to query current display state */
}
/* update mode - this call takes ownership of display.desktop_mode.internal */
SDL_SetDesktopDisplayMode(existing_display, &display.desktop_mode);
/* update bounds */
if (existing_display->internal->x != display.internal->x ||
existing_display->internal->y != display.internal->y) {
existing_display->internal->x = display.internal->x;
existing_display->internal->y = display.internal->y;
SDL_SendDisplayEvent(existing_display, SDL_EVENT_DISPLAY_MOVED, 0, 0);
}
/* update scale */
SDL_SetDisplayContentScale(existing_display, display.content_scale);
/* SDL_DisplayData is updated piece-meal above, free our local copy of this data */
SDL_free( display.internal );
return 0;
}
@@ -664,25 +711,27 @@ static void X11_HandleXRandROutputChange(SDL_VideoDevice *_this, const XRROutput
SDL_DelVideoDisplay(display->id, SDL_TRUE);
}
} else if (ev->connection == RR_Connected) { /* output is coming online */
if (display) {
/* !!! FIXME: update rotation or current mode of existing display? */
} else {
Display *dpy = ev->display;
const int screen = DefaultScreen(dpy);
XVisualInfo vinfo;
if (get_visualinfo(dpy, screen, &vinfo) == 0) {
XRRScreenResources *res = X11_XRRGetScreenResourcesCurrent(dpy, RootWindow(dpy, screen));
if (!res || res->noutput == 0) {
if (res) {
X11_XRRFreeScreenResources(res);
}
res = X11_XRRGetScreenResources(dpy, RootWindow(dpy, screen));
}
Display *dpy = ev->display;
const int screen = DefaultScreen(dpy);
XVisualInfo vinfo;
if (get_visualinfo(dpy, screen, &vinfo) == 0) {
XRRScreenResources *res = X11_XRRGetScreenResourcesCurrent(dpy, RootWindow(dpy, screen));
if (!res || res->noutput == 0) {
if (res) {
X11_AddXRandRDisplay(_this, dpy, screen, ev->output, res, SDL_TRUE);
X11_XRRFreeScreenResources(res);
}
res = X11_XRRGetScreenResources(dpy, RootWindow(dpy, screen));
}
if (res) {
if (display) {
X11_UpdateXRandRDisplay(_this, dpy, screen, ev->output, res, display);
}
else {
X11_AddXRandRDisplay(_this, dpy, screen, ev->output, res, SDL_TRUE);
}
X11_XRRFreeScreenResources(res);
}
}
}