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macOS: more robust detection and switching of exclusive-fullscreen display modes (bug #4822).

Alex Szpakowski 2019-10-26 15:27:51 -03:00
parent a9b867ab07
commit a963e36e2d
2 changed files with 218 additions and 116 deletions
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2
src/video/cocoa/SDL_cocoamodes.h
View File

@ -30,7 +30,7 @@ typedef struct
typedef struct
{
CGDisplayModeRef moderef;
CFMutableArrayRef modes;
} SDL_DisplayModeData;
extern void Cocoa_InitModes(_THIS);

332
src/video/cocoa/SDL_cocoamodes.m
View File

@ -103,90 +103,12 @@ CG_SetError(const char *prefix, CGDisplayErr result)
return SDL_SetError("%s: %s", prefix, error);
}
static SDL_bool
GetDisplayMode(_THIS, CGDisplayModeRef vidmode, CFArrayRef modelist, CVDisplayLinkRef link, SDL_DisplayMode *mode)
static int
GetDisplayModeRefreshRate(CGDisplayModeRef vidmode, CVDisplayLinkRef link)
{
SDL_DisplayModeData *data;
bool usableForDesktop = CGDisplayModeIsUsableForDesktopGUI(vidmode);
int width = (int) CGDisplayModeGetWidth(vidmode);
int height = (int) CGDisplayModeGetHeight(vidmode);
int bpp = 0;
int refreshRate = 0;
CFStringRef fmt;
int refreshRate = (int) (CGDisplayModeGetRefreshRate(vidmode) + 0.5);
/* If a list of possible diplay modes is passed in, use it to filter out
* modes that have duplicate sizes. We don't just rely on SDL's higher level
* duplicate filtering because this code can choose what properties are
* prefered.
* CGDisplayModeGetPixelWidth and friends are only available in 10.8+. */
#ifdef MAC_OS_X_VERSION_10_8
if (modelist != NULL && floor(NSAppKitVersionNumber) > NSAppKitVersionNumber10_7) {
int pixelW = (int) CGDisplayModeGetPixelWidth(vidmode);
int pixelH = (int) CGDisplayModeGetPixelHeight(vidmode);
if (width == pixelW && height == pixelH) {
CFIndex modescount = CFArrayGetCount(modelist);
for (int i = 0; i < modescount; i++) {
CGDisplayModeRef othermode = (CGDisplayModeRef) CFArrayGetValueAtIndex(modelist, i);
if (CFEqual(vidmode, othermode)) {
continue;
}
int otherW = (int) CGDisplayModeGetWidth(othermode);
int otherH = (int) CGDisplayModeGetHeight(othermode);
int otherpixelW = (int) CGDisplayModeGetPixelWidth(othermode);
int otherpixelH = (int) CGDisplayModeGetPixelHeight(othermode);
/* Ignore this mode if it's low-dpi (@1x) and we have a high-dpi
* mode in the list with the same size in points.
*/
if (width == otherW && height == otherH
&& (otherpixelW != otherW || otherpixelH != otherH)) {
return SDL_FALSE;
}
/* Ignore this mode if it's not usable for desktop UI and its
* pixel and point dimensions are equal to another GUI-capable
* mode in the list.
*/
if (width == otherW && height == otherH && pixelW == otherpixelW
&& pixelH == otherpixelH && usableForDesktop
&& CGDisplayModeIsUsableForDesktopGUI(othermode)) {
return SDL_FALSE;
}
}
}
}
#endif
data = (SDL_DisplayModeData *) SDL_malloc(sizeof(*data));
if (!data) {
return SDL_FALSE;
}
data->moderef = vidmode;
fmt = CGDisplayModeCopyPixelEncoding(vidmode);
refreshRate = (int) (CGDisplayModeGetRefreshRate(vidmode) + 0.5);
if (CFStringCompare(fmt, CFSTR(IO32BitDirectPixels),
kCFCompareCaseInsensitive) == kCFCompareEqualTo) {
bpp = 32;
} else if (CFStringCompare(fmt, CFSTR(IO16BitDirectPixels),
kCFCompareCaseInsensitive) == kCFCompareEqualTo) {
bpp = 16;
} else if (CFStringCompare(fmt, CFSTR(kIO30BitDirectPixels),
kCFCompareCaseInsensitive) == kCFCompareEqualTo) {
bpp = 30;
} else {
bpp = 0; /* ignore 8-bit and such for now. */
}
CFRelease(fmt);
/* CGDisplayModeGetRefreshRate returns 0 for many non-CRT displays. */
/* CGDisplayModeGetRefreshRate can return 0 (eg for built-in displays). */
if (refreshRate == 0 && link != NULL) {
CVTime time = CVDisplayLinkGetNominalOutputVideoRefreshPeriod(link);
if ((time.flags & kCVTimeIsIndefinite) == 0 && time.timeValue != 0) {
@ -194,25 +116,181 @@ GetDisplayMode(_THIS, CGDisplayModeRef vidmode, CFArrayRef modelist, CVDisplayLi
}
}
mode->format = SDL_PIXELFORMAT_UNKNOWN;
switch (bpp) {
case 16:
mode->format = SDL_PIXELFORMAT_ARGB1555;
break;
case 30:
mode->format = SDL_PIXELFORMAT_ARGB2101010;
break;
case 32:
mode->format = SDL_PIXELFORMAT_ARGB8888;
break;
case 8: /* We don't support palettized modes now */
default: /* Totally unrecognizable bit depth. */
SDL_free(data);
return refreshRate;
}
static SDL_bool
HasValidDisplayModeFlags(CGDisplayModeRef vidmode)
{
uint32_t ioflags = CGDisplayModeGetIOFlags(vidmode);
/* Filter out modes which have flags that we don't want. */
if (ioflags & (kDisplayModeNeverShowFlag | kDisplayModeNotGraphicsQualityFlag)) {
return SDL_FALSE;
}
/* Filter out modes which don't have flags that we want. */
if (!(ioflags & kDisplayModeValidFlag) || !(ioflags & kDisplayModeSafeFlag)) {
return SDL_FALSE;
}
return SDL_TRUE;
}
static Uint32
GetDisplayModePixelFormat(CGDisplayModeRef vidmode)
{
/* This API is deprecated in 10.11 with no good replacement (as of 10.15). */
CFStringRef fmt = CGDisplayModeCopyPixelEncoding(vidmode);
Uint32 pixelformat = SDL_PIXELFORMAT_UNKNOWN;
if (CFStringCompare(fmt, CFSTR(IO32BitDirectPixels),
kCFCompareCaseInsensitive) == kCFCompareEqualTo) {
pixelformat = SDL_PIXELFORMAT_ARGB8888;
} else if (CFStringCompare(fmt, CFSTR(IO16BitDirectPixels),
kCFCompareCaseInsensitive) == kCFCompareEqualTo) {
pixelformat = SDL_PIXELFORMAT_ARGB1555;
} else if (CFStringCompare(fmt, CFSTR(kIO30BitDirectPixels),
kCFCompareCaseInsensitive) == kCFCompareEqualTo) {
pixelformat = SDL_PIXELFORMAT_ARGB2101010;
} else {
/* ignore 8-bit and such for now. */
}
CFRelease(fmt);
return pixelformat;
}
static SDL_bool
GetDisplayMode(_THIS, CGDisplayModeRef vidmode, CFArrayRef modelist, CVDisplayLinkRef link, SDL_DisplayMode *mode)
{
SDL_DisplayModeData *data;
bool usableForGUI = CGDisplayModeIsUsableForDesktopGUI(vidmode);
int width = (int) CGDisplayModeGetWidth(vidmode);
int height = (int) CGDisplayModeGetHeight(vidmode);
uint32_t ioflags = CGDisplayModeGetIOFlags(vidmode);
int refreshrate = GetDisplayModeRefreshRate(vidmode, link);
Uint32 format = GetDisplayModePixelFormat(vidmode);
bool interlaced = (ioflags & kDisplayModeInterlacedFlag) != 0;
CFMutableArrayRef modes;
if (format == SDL_PIXELFORMAT_UNKNOWN) {
return SDL_FALSE;
}
if (!HasValidDisplayModeFlags(vidmode)) {
return SDL_FALSE;
}
modes = CFArrayCreateMutable(NULL, 0, &kCFTypeArrayCallBacks);
CFArrayAppendValue(modes, vidmode);
/* If a list of possible diplay modes is passed in, use it to filter out
* modes that have duplicate sizes. We don't just rely on SDL's higher level
* duplicate filtering because this code can choose what properties are
* prefered, and it can add CGDisplayModes to the DisplayModeData's list of
* modes to try (see comment below for why that's necessary).
* CGDisplayModeGetPixelWidth and friends are only available in 10.8+. */
#ifdef MAC_OS_X_VERSION_10_8
if (modelist != NULL && floor(NSAppKitVersionNumber) > NSAppKitVersionNumber10_7) {
int pixelW = (int) CGDisplayModeGetPixelWidth(vidmode);
int pixelH = (int) CGDisplayModeGetPixelHeight(vidmode);
CFIndex modescount = CFArrayGetCount(modelist);
for (int i = 0; i < modescount; i++) {
CGDisplayModeRef othermode = (CGDisplayModeRef) CFArrayGetValueAtIndex(modelist, i);
uint32_t otherioflags = CGDisplayModeGetIOFlags(othermode);
if (CFEqual(vidmode, othermode)) {
continue;
}
if (!HasValidDisplayModeFlags(othermode)) {
continue;
}
int otherW = (int) CGDisplayModeGetWidth(othermode);
int otherH = (int) CGDisplayModeGetHeight(othermode);
int otherpixelW = (int) CGDisplayModeGetPixelWidth(othermode);
int otherpixelH = (int) CGDisplayModeGetPixelHeight(othermode);
int otherrefresh = GetDisplayModeRefreshRate(othermode, link);
Uint32 otherformat = GetDisplayModePixelFormat(othermode);
bool otherGUI = CGDisplayModeIsUsableForDesktopGUI(othermode);
/* Ignore this mode if it's low-dpi (@1x) and we have a high-dpi
* mode in the list with the same size in points.
*/
if (width == pixelW && height == pixelH
&& width == otherW && height == otherH
&& refreshrate == otherrefresh && format == otherformat
&& (otherpixelW != otherW || otherpixelH != otherH)) {
CFRelease(modes);
return SDL_FALSE;
}
/* Ignore this mode if it's interlaced and there's a non-interlaced
* mode in the list with the same properties.
*/
if (interlaced && ((otherioflags & kDisplayModeInterlacedFlag) == 0)
&& width == otherW && height == otherH && pixelW == otherpixelW
&& pixelH == otherpixelH && refreshrate == otherrefresh
&& format == otherformat && usableForGUI == otherGUI) {
CFRelease(modes);
return SDL_FALSE;
}
/* Ignore this mode if it's not usable for desktop UI and its
* properties are equal to another GUI-capable mode in the list.
*/
if (width == otherW && height == otherH && pixelW == otherpixelW
&& pixelH == otherpixelH && !usableForGUI && otherGUI
&& refreshrate == otherrefresh && format == otherformat) {
CFRelease(modes);
return SDL_FALSE;
}
/* If multiple modes have the exact same properties, they'll all
* go in the list of modes to try when SetDisplayMode is called.
* This is needed because kCGDisplayShowDuplicateLowResolutionModes
* (which is used to expose highdpi display modes) can make the
* list of modes contain duplicates (according to their properties
* obtained via public APIs) which don't work with SetDisplayMode.
* Those duplicate non-functional modes *do* have different pixel
* formats according to their internal data structure viewed with
* NSLog, but currently no public API can detect that.
* https://bugzilla.libsdl.org/show_bug.cgi?id=4822
*
* As of macOS 10.15.0, those duplicates have the exact same
* properties via public APIs in every way (even their IO flags and
* CGDisplayModeGetIODisplayModeID is the same), so we could test
* those for equality here too, but I'm intentionally not doing that
* in case there are duplicate modes with different IO flags or IO
* display mode IDs in the future. In that case I think it's better
* to try them all in SetDisplayMode than to risk one of them being
* correct but it being filtered out by SDL_AddDisplayMode as being
* a duplicate.
*/
if (width == otherW && height == otherH && pixelW == otherpixelW
&& pixelH == otherpixelH && usableForGUI == otherGUI
&& refreshrate == otherrefresh && format == otherformat) {
CFArrayAppendValue(modes, othermode);
}
}
}
#endif
data = (SDL_DisplayModeData *) SDL_malloc(sizeof(*data));
if (!data) {
CFRelease(modes);
return SDL_FALSE;
}
data->modes = modes;
mode->format = format;
mode->w = width;
mode->h = height;
mode->refresh_rate = refreshRate;
mode->refresh_rate = refreshrate;
mode->driverdata = data;
return SDL_TRUE;
}
@ -220,7 +298,9 @@ GetDisplayMode(_THIS, CGDisplayModeRef vidmode, CFArrayRef modelist, CVDisplayLi
static const char *
Cocoa_GetDisplayName(CGDirectDisplayID displayID)
{
CFDictionaryRef deviceInfo = IODisplayCreateInfoDictionary(CGDisplayIOServicePort(displayID), kIODisplayOnlyPreferredName);
/* This API is deprecated in 10.9 with no good replacement (as of 10.15). */
io_service_t servicePort = CGDisplayIOServicePort(displayID);
CFDictionaryRef deviceInfo = IODisplayCreateInfoDictionary(servicePort, kIODisplayOnlyPreferredName);
NSDictionary *localizedNames = [(NSDictionary *)deviceInfo objectForKey:[NSString stringWithUTF8String:kDisplayProductName]];
const char* displayName = NULL;
@ -304,6 +384,7 @@ Cocoa_InitModes(_THIS)
}
CVDisplayLinkRelease(link);
CGDisplayModeRelease(moderef);
display.desktop_mode = mode;
display.current_mode = mode;
@ -406,29 +487,26 @@ Cocoa_GetDisplayModes(_THIS, SDL_VideoDisplay * display)
*/
if (desktopmoderef && GetDisplayMode(_this, desktopmoderef, NULL, link, &desktopmode)) {
if (!SDL_AddDisplayMode(display, &desktopmode)) {
CGDisplayModeRelease(desktopmoderef);
CFRelease(((SDL_DisplayModeData*)desktopmode.driverdata)->modes);
SDL_free(desktopmode.driverdata);
}
} else {
CGDisplayModeRelease(desktopmoderef);
}
CGDisplayModeRelease(desktopmoderef);
/* By default, CGDisplayCopyAllDisplayModes will only get a subset of the
* system's available modes. For example on a 15" 2016 MBP, users can
* choose 1920x1080@2x in System Preferences but it won't show up here,
* unless we specify the option below.
* The display modes returned by CGDisplayCopyAllDisplayModes are also not
* high dpi-capable unless this option is set.
* kCGDisplayShowDuplicateLowResolutionModes exists since 10.8, but macOS
* 10.11 and 10.12 have bugs with the modes returned when it's used:
* https://bugzilla.libsdl.org/show_bug.cgi?id=3949
* macOS 10.15 also seems to have a bug where entering, exiting, and
* re-entering exclusive fullscreen with a low dpi display mode can cause
* the content of the screen to move up, which this setting avoids:
* https://bugzilla.libsdl.org/show_bug.cgi?id=4822
*/
#ifdef MAC_OS_X_VERSION_10_8
if (floor(NSAppKitVersionNumber) > NSAppKitVersionNumber10_12) {
if (floor(NSAppKitVersionNumber) > NSAppKitVersionNumber10_7) {
const CFStringRef dictkeys[] = {kCGDisplayShowDuplicateLowResolutionModes};
const CFBooleanRef dictvalues[] = {kCFBooleanTrue};
dict = CFDictionaryCreate(NULL,
@ -441,7 +519,10 @@ Cocoa_GetDisplayModes(_THIS, SDL_VideoDisplay * display)
#endif
modes = CGDisplayCopyAllDisplayModes(data->display, dict);
CFRelease(dict);
if (dict) {
CFRelease(dict);
}
if (modes) {
CFIndex i;
@ -452,9 +533,8 @@ Cocoa_GetDisplayModes(_THIS, SDL_VideoDisplay * display)
SDL_DisplayMode mode;
if (GetDisplayMode(_this, moderef, modes, link, &mode)) {
if (SDL_AddDisplayMode(display, &mode)) {
CGDisplayModeRetain(moderef);
} else {
if (!SDL_AddDisplayMode(display, &mode)) {
CFRelease(((SDL_DisplayModeData*)mode.driverdata)->modes);
SDL_free(mode.driverdata);
}
}
@ -466,6 +546,25 @@ Cocoa_GetDisplayModes(_THIS, SDL_VideoDisplay * display)
CVDisplayLinkRelease(link);
}
static CGError
SetDisplayModeForDisplay(CGDirectDisplayID display, SDL_DisplayModeData *data)
{
/* SDL_DisplayModeData can contain multiple CGDisplayModes to try (with
* identical properties), some of which might not work. See GetDisplayMode.
*/
CGError result = kCGErrorFailure;
for (CFIndex i = 0; i < CFArrayGetCount(data->modes); i++) {
CGDisplayModeRef moderef = (CGDisplayModeRef)CFArrayGetValueAtIndex(data->modes, i);
result = CGDisplaySetDisplayMode(display, moderef, NULL);
if (result == kCGErrorSuccess) {
/* If this mode works, try it first next time. */
CFArrayExchangeValuesAtIndices(data->modes, i, 0);
break;
}
}
return result;
}
int
Cocoa_SetDisplayMode(_THIS, SDL_VideoDisplay * display, SDL_DisplayMode * mode)
{
@ -481,7 +580,7 @@ Cocoa_SetDisplayMode(_THIS, SDL_VideoDisplay * display, SDL_DisplayMode * mode)
if (data == display->desktop_mode.driverdata) {
/* Restoring desktop mode */
CGDisplaySetDisplayMode(displaydata->display, data->moderef, NULL);
SetDisplayModeForDisplay(displaydata->display, data);
if (CGDisplayIsMain(displaydata->display)) {
CGReleaseAllDisplays();
@ -506,7 +605,7 @@ Cocoa_SetDisplayMode(_THIS, SDL_VideoDisplay * display, SDL_DisplayMode * mode)
}
/* Do the physical switch */
result = CGDisplaySetDisplayMode(displaydata->display, data->moderef, NULL);
result = SetDisplayModeForDisplay(displaydata->display, data);
if (result != kCGErrorSuccess) {
CG_SetError("CGDisplaySwitchToMode()", result);
goto ERR_NO_SWITCH;
@ -528,7 +627,11 @@ Cocoa_SetDisplayMode(_THIS, SDL_VideoDisplay * display, SDL_DisplayMode * mode)
/* Since the blanking window covers *all* windows (even force quit) correct recovery is crucial */
ERR_NO_SWITCH:
CGDisplayRelease(displaydata->display);
if (CGDisplayIsMain(displaydata->display)) {
CGReleaseAllDisplays();
} else {
CGDisplayRelease(displaydata->display);
}
ERR_NO_CAPTURE:
if (fade_token != kCGDisplayFadeReservationInvalidToken) {
CGDisplayFade (fade_token, 0.5, kCGDisplayBlendSolidColor, kCGDisplayBlendNormal, 0.0, 0.0, 0.0, FALSE);
@ -551,13 +654,12 @@ Cocoa_QuitModes(_THIS)
}
mode = (SDL_DisplayModeData *) display->desktop_mode.driverdata;
CGDisplayModeRelease(mode->moderef);
CFRelease(mode->modes);
for (j = 0; j < display->num_display_modes; j++) {
mode = (SDL_DisplayModeData*) display->display_modes[j].driverdata;
CGDisplayModeRelease(mode->moderef);
CFRelease(mode->modes);
}
}
Cocoa_ToggleMenuBar(YES);
}