From e92a1308d5fe6ebeeef0e1ee227c1dbbb3e458b3 Mon Sep 17 00:00:00 2001
From: Erik Faye-Lund <erik.faye-lund@collabora.com>
Date: Wed, 10 Aug 2022 08:27:19 +0200
Subject: [PATCH] mesa: add format-helper for latc

Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18564>
---
 src/mesa/main/formats.c | 10 ++++++++++
 src/mesa/main/formats.h |  3 +++
 2 files changed, 13 insertions(+)

diff --git a/src/mesa/main/formats.c b/src/mesa/main/formats.c
index f48c782a022..a46572513f0 100644
--- a/src/mesa/main/formats.c
+++ b/src/mesa/main/formats.c
@@ -665,6 +665,16 @@ _mesa_is_format_rgtc(mesa_format format)
 }
 
 
+/**
+ * Return TRUE if format is an LATC compressed format.
+ */
+bool
+_mesa_is_format_latc(mesa_format format)
+{
+   return _mesa_get_format_layout(format) == MESA_FORMAT_LAYOUT_LATC;
+}
+
+
 /**
  * Return TRUE if format is an BPTC compressed format.
  */
diff --git a/src/mesa/main/formats.h b/src/mesa/main/formats.h
index acc69c1654d..aee6217621d 100644
--- a/src/mesa/main/formats.h
+++ b/src/mesa/main/formats.h
@@ -701,6 +701,9 @@ _mesa_is_format_s3tc(mesa_format format);
 bool
 _mesa_is_format_rgtc(mesa_format format);
 
+bool
+_mesa_is_format_latc(mesa_format format);
+
 bool
 _mesa_is_format_bptc(mesa_format format);