From de9c66d74979f71844036db132d61d99504d4029 Mon Sep 17 00:00:00 2001
From: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
Date: Wed, 2 Jun 2021 07:05:35 -0400
Subject: [PATCH] r300: explicitly advertise index buffer format support
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Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11132>
---
 src/gallium/drivers/r300/r300_screen.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/gallium/drivers/r300/r300_screen.c b/src/gallium/drivers/r300/r300_screen.c
index 31878b3f5a2..bff7a40328e 100644
--- a/src/gallium/drivers/r300/r300_screen.c
+++ b/src/gallium/drivers/r300/r300_screen.c
@@ -652,6 +652,13 @@ static bool r300_is_format_supported(struct pipe_screen* screen,
         }
     }
 
+    if (usage & PIPE_BIND_INDEX_BUFFER) {
+       if (format == PIPE_FORMAT_R8_UINT ||
+           format == PIPE_FORMAT_R16_UINT ||
+           format == PIPE_FORMAT_R32_UINT)
+          retval |= PIPE_BIND_INDEX_BUFFER;
+    }
+
     return retval == usage;
 }