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-3D API drivers need to write NV_PGRAPH_PRI_GPCS_ZCULL_CTX_DEBUG_ZF32_AS_Z16 and NV_PGRAPH_PRI_GPCS_SETUP_DEBUG_Z_GAMUT_OFFSET_ZF32_AS_Z16 fields to get ZCULL for ZF32 depth values less than 0.25 -GM20B is already added bug 2427703 bug 2704313 Change-Id: I07a4d7b3a1e09183c56d4c72533bc5d280bc7782 Signed-off-by: David Li <davli@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2279674 Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> Reviewed-by: svc-mobile-misra <svc-mobile-misra@nvidia.com> Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com> Reviewed-by: Deepak Nibade <dnibade@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> GVS: Gerrit_Virtual_Submit Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>