From f906eb06c28880c20160cb4a969e3f6fddb3029b Mon Sep 17 00:00:00 2001
From: gdkchan <gab.dark.100@gmail.com>
Date: Wed, 21 Dec 2022 20:39:58 -0300
Subject: Implement a software ETC2 texture decoder (#4121)

* Implement a software ETC2 texture decoder

* Fix output size calculation for non-2D textures

* Address PR feedback
---
 Ryujinx.Graphics.GAL/Format.cs | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

(limited to 'Ryujinx.Graphics.GAL/Format.cs')

diff --git a/Ryujinx.Graphics.GAL/Format.cs b/Ryujinx.Graphics.GAL/Format.cs
index 8a50f22d..87d08803 100644
--- a/Ryujinx.Graphics.GAL/Format.cs
+++ b/Ryujinx.Graphics.GAL/Format.cs
@@ -516,6 +516,27 @@ namespace Ryujinx.Graphics.GAL
             return false;
         }
 
+        /// <summary>
+        /// Checks if the texture format is an ETC2 format.
+        /// </summary>
+        /// <param name="format">Texture format</param>
+        /// <returns>True if the texture format is an ETC2 format, false otherwise</returns>
+        public static bool IsEtc2(this Format format)
+        {
+            switch (format)
+            {
+                case Format.Etc2RgbaSrgb:
+                case Format.Etc2RgbaUnorm:
+                case Format.Etc2RgbPtaSrgb:
+                case Format.Etc2RgbPtaUnorm:
+                case Format.Etc2RgbSrgb:
+                case Format.Etc2RgbUnorm:
+                    return true;
+            }
+
+            return false;
+        }
+
         /// <summary>
         /// Checks if the texture format is a BGR format.
         /// </summary>
-- 
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