radv/winsys: do not count visible VRAM buffers twice in the budget
The VRAM size returned to apps is computed as follows:
vram_size = real_hw_vram_size - visible_vram_size.
Visible VRAM buffers should be counted only in the visible VRAM
counter and not twice. Buffers with the NO_CPU_ACCESS flag are
known to not be mappable, so they are counted in the VRAM counter.
Other buffers, with the CPU_ACCESS flag, or without any of both
(imported buffers) are counted in the visible VRAM counter because
they are mappable.
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4834>
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