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Fix the CLI 3MF Export Crash After Rendering a Plate Thumbnail

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Since the CLI can open an OpenGL context (#15745) it renders plate
thumbnails on export, and the viewport restore at the end of
render_thumbnail_internal (#15674) then reads the plater through the wx
application. The CLI has neither, so every --export-3mf on a machine
with a display died with a segmentation fault after the first
thumbnail. Skip the restore when there is no application or no plater;
the GUI path is unchanged.
This commit is contained in:
Hanif Koh
2026-09-30 14:46:44 +08:00
committed by SoftFever
parent 7d42ad17a4
commit 561737f407
1 changed files with 5 additions and 2 deletions
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src/slic3r/GUI/GLCanvas3D.cpp
+5 -2
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@@ -6546,8 +6546,11 @@ void GLCanvas3D::render_thumbnail_internal(ThumbnailData& thumbnail_data, const
// glsafe(::glClearColor(1.0f, 1.0f, 1.0f, 1.0f));
BOOST_LOG_TRIVIAL(info) << boost::format("render_thumbnail: finished");
// Puts the canvas viewport back in place of the thumbnail one set above.
wxGetApp().plater()->get_camera().apply_viewport();
// Puts the canvas viewport back in place of the thumbnail one set above. The CLI renders
// thumbnails with no application and no plater, so there is no canvas viewport to restore.
if (wxTheApp != nullptr)
if (Plater *plater = wxGetApp().plater(); plater != nullptr)
plater->get_camera().apply_viewport();
}
void GLCanvas3D::render_thumbnail_framebuffer(ThumbnailData& thumbnail_data, unsigned int w, unsigned int h, const ThumbnailsParams& thumbnail_params,