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Disable EGL on Nvidia XWayland environments too

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It renders a black window, just like native X11.
This commit is contained in:
Cameron Gutman
2025-12-11 20:10:37 -06:00
parent bd6a1d9a9b
commit 54163e30d0
4 changed files with 16 additions and 22 deletions
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21
app/wm.cpp
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@@ -20,6 +20,10 @@
#ifdef HAVE_EGL
#include <EGL/egl.h>
#ifndef EGL_PLATFORM_X11_KHR
#define EGL_PLATFORM_X11_KHR 0x31D5
#endif
#endif
#define VALUE_SET 0x01
@@ -51,7 +55,7 @@ bool WMUtils::isRunningX11()
#endif
}
bool WMUtils::isRunningNvidiaProprietaryDriver()
bool WMUtils::isRunningNvidiaProprietaryDriverX11()
{
#ifdef HAVE_EGL
static SDL_atomic_t isRunningOnNvidiaDriver;
@@ -61,7 +65,10 @@ bool WMUtils::isRunningNvidiaProprietaryDriver()
if (!(val & VALUE_SET)) {
bool nvidiaDriver = false;
EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
// Open the default X11 display. This is critical for accurate detection of the
// Nvidia driver under XWayland because eglGetDisplay(EGL_DEFAULT_DISPLAY) will
// return the Wayland display but Qt will use the X11 display.
EGLDisplay display = eglGetPlatformDisplay(EGL_PLATFORM_X11_KHR, EGL_DEFAULT_DISPLAY, nullptr);
if (display != EGL_NO_DISPLAY && eglInitialize(display, nullptr, nullptr)) {
const char* vendorString = eglQueryString(display, EGL_VENDOR);
nvidiaDriver = vendorString && strstr(vendorString, "NVIDIA") != NULL;
@@ -177,13 +184,9 @@ QString WMUtils::getDrmCardOverride()
return QString();
}
bool WMUtils::isEGLSafe()
bool WMUtils::isX11EGLSafe()
{
// We can use EGL if:
// a) We're not using X11/Wayland (EGLFS requires it)
// b) We're using Wayland (even XWayland is fine)
// c) We're using X11 but not the Nvidia proprietary driver
//
// Nvidia's driver has broken EGL support on X11 and XWayland
// https://github.com/moonlight-stream/moonlight-qt/issues/1751
return !WMUtils::isRunningWindowManager() || WMUtils::isRunningWayland() || !WMUtils::isRunningNvidiaProprietaryDriver();
return !WMUtils::isRunningNvidiaProprietaryDriverX11();
}