add quirk-tests for ARB_depth_clamp
This verifies a few quirks of ARB_depth_clamp.
Signed-off-by: Erik Faye-Lund erik.faye-lund@collabora.com
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This verifies a few quirks of ARB_depth_clamp.
Signed-off-by: Erik Faye-Lund erik.faye-lund@collabora.com