gbm: Add USE_FRONT_RENDERING flag
Provide a use flag to let the driver know that the allocated buffer will
be used for frontbuffer rendering. For example, bandwidth compressed
formats should usually be avoided for frontbuffer rendering to avoid the
visual corruption that results from this display racing with the GPU
writing header data vs. pixel data.
Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Emma Anholt <emma@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17799>