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)
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)