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isl/gen12: add reminder comment about missing WA with 3D surfaces

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Signed-off-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Tested-by: Marge Bot <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3441>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3441>
This commit is contained in:
Tapani Pälli 2020-01-17 10:30:03 +02:00
parent d8a3501f1b
commit 31feae1c21
1 changed files with 13 additions and 0 deletions
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13
src/intel/isl/isl.c
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@ -1980,6 +1980,19 @@ isl_surf_get_ccs_surf(const struct isl_device *dev,
return false;
}
/* GEN:BUG:1207137018
*
* TODO: implement following workaround currently covered by the restriction
* above. If following conditions are met:
*
* - RENDER_SURFACE_STATE.Surface Type == 3D
* - RENDER_SURFACE_STATE.Auxiliary Surface Mode != AUX_NONE
* - RENDER_SURFACE_STATE.Tiled ResourceMode is TYF or TYS
*
* Set the value of RENDER_SURFACE_STATE.Mip Tail Start LOD to a mip that
* larger than those present in the surface (i.e. 15)
*/
/* TODO: More conditions where it can fail. */
/* From the Ivy Bridge PRM, Vol2 Part1 11.7 "MCS Buffer for Render