From 4e36aa507e90241d2753891a6c0d238d87281016 Mon Sep 17 00:00:00 2001
From: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Date: Tue, 27 Jun 2023 14:42:52 +0300
Subject: [PATCH] isl: disable miptails on gfx12 with yuv formats

A number of CTS tests are failing, like :

   dEQP-VK.ycbcr.format.b8g8r8g8_422_unorm.vertex_optimal

Failures are reproduced on simulation.

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Nanley Chery <nanley.g.chery@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23620>
---
 src/intel/isl/isl.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/intel/isl/isl.c b/src/intel/isl/isl.c
index 6f168da14a4..7e7b8057d9c 100644
--- a/src/intel/isl/isl.c
+++ b/src/intel/isl/isl.c
@@ -1549,6 +1549,12 @@ isl_choose_miptail_start_level(const struct isl_device *dev,
    if (isl_format_is_planar(info->format))
       return 15;
 
+   /* TODO: figure out why having YUV formats in the miptail on Gfx12 does not
+    *       work.
+    */
+   if (ISL_GFX_VER(dev) == 12 && isl_format_is_yuv(info->format))
+      return 15;
+
    assert(tile_info->tiling == ISL_TILING_64 || isl_tiling_is_std_y(tile_info->tiling));
    assert(info->samples == 1);