Mesa (master): iris: Do not advertise multisampled image load/store.

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Module: Mesa
Branch: master
Commit: b15f5cfd20c8b079918dd19bed32de7cc9617100
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=b15f5cfd20c8b079918dd19bed32de7cc9617100

Author: Rafael Antognolli <rafael.antognolli at intel.com>
Date:   Mon Apr 29 16:02:58 2019 -0700

iris: Do not advertise multisampled image load/store.

Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>

---

 src/gallium/drivers/iris/iris_formats.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/gallium/drivers/iris/iris_formats.c b/src/gallium/drivers/iris/iris_formats.c
index 91a5e9e5982..1c32f1a6aa1 100644
--- a/src/gallium/drivers/iris/iris_formats.c
+++ b/src/gallium/drivers/iris/iris_formats.c
@@ -454,6 +454,11 @@ iris_is_format_supported(struct pipe_screen *pscreen,
    }
 
    if (usage & PIPE_BIND_SHADER_IMAGE) {
+      /* Dataport doesn't support compression, and we can't resolve an MCS
+       * compressed surface.
+       */
+      supported &= sample_count == 1;
+
       // XXX: allow untyped reads
       supported &= isl_format_supports_typed_reads(devinfo, format) &&
                    isl_format_supports_typed_writes(devinfo, format);