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Revert "Use the physical desktop size in pixels rather than the native resolution on macOS"

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Let's wait until functionality is confirmed on a 5K iMac before doing this.

This reverts commit 8fe3474589.
This commit is contained in:
Cameron Gutman
2020-05-09 16:51:18 -07:00
parent 8fe3474589
commit 3cb3c1c6d8
1 changed files with 17 additions and 36 deletions
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53
app/streaming/streamutils.cpp
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@@ -83,54 +83,35 @@ bool StreamUtils::getRealDesktopMode(int displayIndex, SDL_DisplayMode* mode)
return false;
}
// Grab the (possibly scaled) desktop resolution
if (SDL_GetDesktopDisplayMode(displayIndex, mode) != 0) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
"SDL_GetDesktopDisplayMode() failed: %s",
SDL_GetError());
return false;
}
// This is required to ensure we get the high DPI display modes
const CFStringRef dictKeys[] = {kCGDisplayShowDuplicateLowResolutionModes};
const CFBooleanRef dictValues[] = {kCFBooleanTrue};
CFDictionaryRef dict = CFDictionaryCreate(NULL,
(const void**)dictKeys,
(const void**)dictValues,
SDL_arraysize(dictValues),
&kCFCopyStringDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
SDL_zerop(mode);
// Retina displays have non-native resolutions both below and above (!) their
// native resolution, so it's impossible for us to figure out what's actually
// native on macOS using the SDL API alone. We'll talk to CoreGraphics to
// find the correct resolution and match it in our SDL list.
CFArrayRef modeList = CGDisplayCopyAllDisplayModes(displayIds[displayIndex], dict);
CFRelease(dict);
// Get the physical size of the matching logical resolution
CFArrayRef modeList = CGDisplayCopyAllDisplayModes(displayIds[displayIndex], nullptr);
CFIndex count = CFArrayGetCount(modeList);
for (CFIndex i = 0; i < count; i++) {
auto cgMode = (CGDisplayModeRef)(CFArrayGetValueAtIndex(modeList, i));
auto modeWidth = static_cast<int>(CGDisplayModeGetWidth(cgMode));
auto modeHeight = static_cast<int>(CGDisplayModeGetHeight(cgMode));
if (mode->w == modeWidth && mode->h == modeHeight) {
SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
"Matching desktop resolution is: %zux%zu (scaled size: %zux%zu) (flags: %x)",
CGDisplayModeGetPixelWidth(cgMode),
CGDisplayModeGetPixelHeight(cgMode),
CGDisplayModeGetWidth(cgMode),
CGDisplayModeGetHeight(cgMode),
CGDisplayModeGetIOFlags(cgMode));
mode->w = static_cast<int>(CGDisplayModeGetPixelWidth(cgMode));
mode->h = static_cast<int>(CGDisplayModeGetPixelHeight(cgMode));
if ((CGDisplayModeGetIOFlags(cgMode) & kDisplayModeNativeFlag) != 0) {
mode->w = static_cast<int>(CGDisplayModeGetWidth(cgMode));
mode->h = static_cast<int>(CGDisplayModeGetHeight(cgMode));
break;
}
}
CFRelease(modeList);
// Now find the SDL mode that matches the CG native mode
for (int i = 0; i < SDL_GetNumDisplayModes(displayIndex); i++) {
SDL_DisplayMode thisMode;
if (SDL_GetDisplayMode(displayIndex, i, &thisMode) == 0) {
if (thisMode.w == mode->w && thisMode.h == mode->h &&
thisMode.refresh_rate >= mode->refresh_rate) {
*mode = thisMode;
break;
}
}
}
#else
if (SDL_GetDesktopDisplayMode(displayIndex, mode) != 0) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,