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eglfs: Extend GBM surface creation probing

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Some graphics drivers do only create a surface with the help of
gbm_surface_create_with_modifiers and others do require to use
gbm_surface_create. So it is needed to probe these.

Change-Id: I9ea657f12f2ea23ec426a378cfd67e297cb2d310
Pick-to: 6.5 6.6
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
This commit is contained in:
Andreas Holzammer 2023-09-13 13:09:41 +02:00
parent 0bfb25d178
commit 86eb1f4413
1 changed files with 16 additions and 1 deletions
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17
src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsgbmscreen.cpp
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@ -142,11 +142,12 @@ gbm_surface *QEglFSKmsGbmScreen::createSurface(EGLConfig eglConfig)
}
}
const uint32_t gbmFormat = drmFormatToGbmFormat(m_output.drm_format);
// Fallback for older drivers, and when "format" is explicitly specified
// in the output config. (not guaranteed that the requested format works
// of course, but do what we are told to)
if (!m_gbm_surface) {
uint32_t gbmFormat = drmFormatToGbmFormat(m_output.drm_format);
if (queryFromEgl)
qCDebug(qLcEglfsKmsDebug, "Could not create surface with EGL_NATIVE_VISUAL_ID, falling back to format %x", gbmFormat);
m_gbm_surface = gbm_surface_create(gbmDevice,
@ -155,6 +156,20 @@ gbm_surface *QEglFSKmsGbmScreen::createSurface(EGLConfig eglConfig)
gbmFormat,
gbmFlags());
}
// Fallback for some drivers, its required to request with modifiers
if (!m_gbm_surface) {
uint64_t modifier = DRM_FORMAT_MOD_LINEAR;
m_gbm_surface = gbm_surface_create_with_modifiers(gbmDevice,
rawGeometry().width(),
rawGeometry().height(),
gbmFormat,
&modifier, 1);
}
// Fail here, as it would fail with the next usage of the GBM surface, which is very unexpected
if (!m_gbm_surface)
qFatal("Could not create GBM surface!");
}
return m_gbm_surface; // not owned, gets destroyed in QEglFSKmsGbmIntegration::destroyNativeWindow() via QEglFSKmsGbmWindow::invalidateSurface()
}