lspci -k | grep -EA3 'VGA|DISPLAY'
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Pitcairn PRO [Radeon HD 7850 / R7 265 / R9 270 1024SP]
        Subsystem: Apple Inc. Device 014e
        Kernel driver in use: radeon
        Kernel modules: radeon, amdgpu

export QT_LOGGING_RULES="qt.webenginecontext=true;qt.webengine.compositor=true"
export QT_XCB_GL_INTEGRATION=xcb_egl

./simplebrowser

qt.webenginecontext:
Chromium GL Backend: angle
Chromium ANGLE Backend: gl-egl
Chromium Vulkan Backend: disabled

QSG RHI Backend: OpenGL
QSG RHI Backend Supported: yes
GPU Vendor: AMD

Using GLX: no
Using EGL: yes
Using Shared GL: no

Init Parameters:
 *  application-name simplebrowser
 *  browser-subprocess-path /usr/lib/qt6/QtWebEngineProcess
 *  disable-blink-features WebOTP
 *  disable-features EyeDropper,BackgroundFetch,InstalledApp,WebOTP,WebPayments,WebUSB,StandardCompliantNonSpecialSchemeURLParsing
 *  disable-setuid-sandbox
 *  disable-speech-api
 *  enable-features NetworkServiceInProcess2,TracingServiceInProcess
 *  in-process-gpu
 *  touch-events auto
 *  use-angle gl-egl
 *  use-gl angle

qt.webengine.compositor: Compositor Type: Native
qt.webengine.compositor: QPA Platform Plugin: xcb
qt.webengine.compositor: Skia Graphics Context Type: GaneshGL
qt.webengine.compositor: Native Buffer Supported: yes
qt.webengine.compositor: Native Skia Output Device: OpenGL
qt.webengine.compositor: Initializing buffer 0x62344454f960 with SharedImage:
qt.webengine.compositor:   Usage: Gles2Read|DisplayRead|DisplayWrite|Scanout
qt.webengine.compositor:   Pixels size: 2559x1268
qt.webengine.compositor:   Format: RGBA_8888
qt.webengine.compositor:   Backing: OzoneImageBacking
qt.webengine.compositor: EGL: Importing NativePixmap into GL Texture.
qt.webengine.compositor: Initializing buffer 0x716ad40173e0 with SharedImage:
qt.webengine.compositor:   Usage: Gles2Read|DisplayRead|DisplayWrite|Scanout
qt.webengine.compositor:   Pixels size: 2559x1227
qt.webengine.compositor:   Format: RGBA_8888
qt.webengine.compositor:   Backing: OzoneImageBacking
qt.webengine.compositor: EGL: Importing NativePixmap into GL Texture.
qt.webengine.compositor: Initializing buffer 0x623444593ba0 with SharedImage:
qt.webengine.compositor:   Usage: Gles2Read|DisplayRead|DisplayWrite|Scanout
qt.webengine.compositor:   Pixels size: 2559x1227
qt.webengine.compositor:   Format: RGBA_8888
qt.webengine.compositor:   Backing: OzoneImageBacking
qt.webengine.compositor: EGL: Importing NativePixmap into GL Texture.
qt.webengine.compositor: EGL: Importing NativePixmap into GL Texture.
qt.webengine.compositor: EGL: Importing NativePixmap into GL Texture.
qt.webengine.compositor: EGL: Importing NativePixmap into GL Texture.
qt.webengine.compositor: EGL: Importing NativePixmap into GL Texture.