From 746ba9f2d2156cc143edd12b84b9c91d8a08876c Mon Sep 17 00:00:00 2001
From: David Rosca <david.rosca@amd.com>
Date: Tue, 7 Jan 2025 10:17:02 +0100
Subject: [PATCH] gallium/vl: Fix sampler view components for Y8_400 format

Copy sampler view for last component to remaining components.
Fixes sampling from Y8_400 luma-only format.

Fixes: 8a20e634ce5 ("gallium/vl: Add plane order for Y8_400 format")
Reviewed-by: Thong Thai <thong.thai@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32919>
---
 src/gallium/auxiliary/vl/vl_video_buffer.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/gallium/auxiliary/vl/vl_video_buffer.c b/src/gallium/auxiliary/vl/vl_video_buffer.c
index 55057475b49..f2e086fdfaf 100644
--- a/src/gallium/auxiliary/vl/vl_video_buffer.c
+++ b/src/gallium/auxiliary/vl/vl_video_buffer.c
@@ -328,6 +328,11 @@ vl_video_buffer_sampler_view_components(struct pipe_video_buffer *buffer)
       }
    }
 
+   assert(component != 0);
+
+   for (i = component; i < VL_NUM_COMPONENTS; ++i)
+      pipe_sampler_view_reference(&buf->sampler_view_components[i], buf->sampler_view_components[component - 1]);
+
    return buf->sampler_view_components;
 
 error: