Additional piglits to test ARB_depth_clamp
This merge request adds a number of piglits to test ARB_depth_clamp.
One of the main reasons to implement this was to test the implementation of TGSI lowering of depth_clamp provided in mesa!1450 (merged)
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This merge request adds a number of piglits to test ARB_depth_clamp.
One of the main reasons to implement this was to test the implementation of TGSI lowering of depth_clamp provided in mesa!1450 (merged)