[Webkit-unassigned] [Bug 209118] [GTK] UI process crash when entering compositing mode when WPE_RENDERER is enabled

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=209118

--- Comment #21 from Michael Catanzaro <mcatanzaro at gnome.org> ---
Hmmm... from about:gpu, using Boxes 3.36.2 and a Fedora 32 VM:

EGL_VERSION
1.4

EGL_VENDOR
Mesa Project

EGL_EXTENSIONS
EGL_EXT_device_base EGL_EXT_device_enumeration EGL_EXT_device_query EGL_EXT_platform_base EGL_KHR_client_get_all_proc_addresses EGL_EXT_client_extensions EGL_KHR_debug EGL_EXT_platform_wayland EGL_EXT_platform_x11 EGL_MESA_platform_gbm EGL_MESA_platform_surfaceless EGL_EXT_platform_device EGL_KHR_cl_event2 EGL_KHR_config_attribs EGL_KHR_context_flush_control EGL_KHR_create_context EGL_KHR_create_context_no_error EGL_KHR_fence_sync EGL_KHR_get_all_proc_addresses EGL_KHR_gl_colorspace EGL_KHR_gl_renderbuffer_image EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_3D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_image_base EGL_KHR_no_config_context EGL_KHR_reusable_sync EGL_KHR_surfaceless_context EGL_EXT_pixel_format_float EGL_KHR_wait_sync EGL_MESA_configless_context EGL_MESA_drm_image EGL_MESA_query_driver

Notice: no EGL_WL_bind_wayland_display (why not?). Prior to that commit, that would cause WS::Instance::initialize to fail. After, initialization continues and we get this runtime crash.

(I notice my VM also has no EGL_EXT_image_dma_buf_import or EGL_EXT_image_dma_buf_import_modifiers, which wpebackend-fdo also uses, but that seems to be optional and OK. My Fedora 32 host system does not even have EGL_EXT_image_dma_buf_import_modifiers.)

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