Fix black viewport on Linux .deb install and Wayland systems#153
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fernandotonon merged 1 commit intomasterfrom Feb 25, 2026
Merged
Fix black viewport on Linux .deb install and Wayland systems#153fernandotonon merged 1 commit intomasterfrom
fernandotonon merged 1 commit intomasterfrom
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The .deb package had an incorrect PluginFolder path in plugins.cfg (pointing to /usr/local/lib/OGRE from the CI build instead of /usr/lib/qtmesheditor where the .deb installs plugins), preventing Ogre from loading any render system. Additionally, on Wayland desktops Ogre's externalWindowHandle requires X11 window IDs which are unavailable under the Wayland compositor, so we now force the XCB platform plugin on Linux. - Fix PluginFolder path in .deb packaging via sed in deploy.yml - Add QT_QPA_PLATFORM=xcb to .deb launcher script - Force XCB platform in main.cpp on Linux before QApplication init - Bump version to 2.7.4 Co-authored-by: Cursor <cursoragent@cursor.com>
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Summary
/usr/local/lib/OGREinplugins.cfg, but the .deb installs plugins to/usr/lib/qtmesheditor/. Ogre couldn't load any render system, resulting in a black viewport.externalWindowHandlerequires X11 window IDs. Under Wayland,winId()returns an incompatible surface handle. AddedQT_QPA_PLATFORM=xcbboth inmain.cppand the .deb launcher script.Root cause
The render timer in
MainWindowcallsrenderOneFrame()and catches exceptions — when the render system fails to load (wrong plugin path) or materials fail (if GL3Plus is used without shaders), the exception handler silently stops the timer. The viewport stays black with no visible error.Test plan
plugins.cfgpathMade with Cursor