Comment # 6
on bug 57875
from Stefan Dösinger
I can reproduce the bug, and after a quick investigation it seems to be a legitimate problem how depth clamping is handled. The application enables it, it enables it only if the extension is available and if I don't set the GPUs CLIP_DISABLE flag but keep the extension the bugs go away(so having the extension doesn't trigger a different codepath that is broken in some other way). Marek, in 09109c11d9efd78c0f87fc55911e03eda5fd980b you mention GB_TILE_CONFIG.Z_EXTENDED. From looking at the code of this application and the comments therein, I suspect the clamping part of GL_ARB_depth_clamp is required here. Do you have some code left over from your previous DEPTH_CLAMP experiments?
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