Applies on top of Jason's patch :
https://patchwork.freedesktop.org/patch/139603/
Signed-off-by: Lionel Landwerlin <lionel.g.landwer...@intel.com>
Cc: Jason Ekstrand <ja...@jlekstrand.net>
---
src/intel/isl/isl.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/src/intel/isl/isl.c b/src/intel/isl/isl.c
index 1a47da5257..b7f3aaee1c 100644
--- a/src/intel/isl/isl.c
+++ b/src/intel/isl/isl.c
@@ -1417,6 +1417,15 @@ isl_surf_get_mcs_surf(const struct isl_device *dev,
assert(surf->levels == 1);
assert(surf->logical_level0_px.depth == 1);
+ /* Internal documentation says (not found in PRMs) :
+ *
+ * "If Number of Multisamples is MULTISAMPLECOUNT_16, then Width must be
+ * 8K texels or less, or the surface must not use the a multisample
+ * control surface (MCS)."
+ */
+ if (surf->samples == 16 && surf->width > 8192)
+ return false;
+
enum isl_format mcs_format;
switch (surf->samples) {
case 2: mcs_format = ISL_FORMAT_MCS_2X; break;
--
2.11.0
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