Mesa (main): r300: explicitly advertise index buffer format support

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Module: Mesa
Branch: main
Commit: de9c66d74979f71844036db132d61d99504d4029
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=de9c66d74979f71844036db132d61d99504d4029

Author: Mike Blumenkrantz <michael.blumenkrantz at gmail.com>
Date:   Wed Jun  2 07:05:35 2021 -0400

r300: explicitly advertise index buffer format support

Reviewed-by: Erik Faye-Lund <erik.faye-lund at collabora.com>
Reviewed-by: Marek Olšák <marek.olsak at 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;
 }