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RADV Lands Workaround For Buggy HiZ/HiS On AMD RDNA4 GPUs

It turns out the Hierarchical Z "HiZ" implementation with AMD RDNA4 GPUs with the GFX12 graphics engine for early rejection of fragments before hitting the rendering pipeline is slightly buggy. Driver workarounds are needed for the HiZ/HiS support with RDNA4 GPUs to avoid potential hangs...

Apr 8, 2025 - 11:46
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RADV Lands Workaround For Buggy HiZ/HiS On AMD RDNA4 GPUs
It turns out the Hierarchical Z "HiZ" implementation with AMD RDNA4 GPUs with the GFX12 graphics engine for early rejection of fragments before hitting the rendering pipeline is slightly buggy. Driver workarounds are needed for the HiZ/HiS support with RDNA4 GPUs to avoid potential hangs...
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