RD dump generation can be expensive and can only be desired for some
specific part of execution. Trigger file mechanism helps with this to a
certain degree but is still somewhat inexact.
FD_RD_DUMP_SUBMITS environment variable can be used to specify ranges of
submit indices for which RD dumps of command streams should be generated.
FD_RD_DUMP_FRAMES environment variable can similarly be used to specify
ranges of frames under which RD dumps for submitted command streams should
be generated. Frame ranges only really work with Turnip since the frame
count data is available there.
Signed-off-by: Zan Dobersek <zdobersek@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/37499>
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