Remove textures from cache on unmap if not mapped and modified (#4211)

Ryujinx.Graphics.Gpu/Image/TextureGroup.cs

@@ -434,6 +434,32 @@ namespace Ryujinx.Graphics.Gpu.Image
             }
         }
 
+        /// <summary>
+        /// Checks if a texture was modified by the GPU.
+        /// </summary>
+        /// <param name="texture">The texture to be checked</param>
+        /// <returns>True if any region of the texture was modified by the GPU, false otherwise</returns>
+        public bool AnyModified(Texture texture)
+        {
+            bool anyModified = false;
+
+            EvaluateRelevantHandles(texture, (baseHandle, regionCount, split) =>
+            {
+                for (int i = 0; i < regionCount; i++)
+                {
+                    TextureGroupHandle group = _handles[baseHandle + i];
+
+                    if (group.Modified)
+                    {
+                        anyModified = true;
+                        break;
+                    }
+                }
+            });
+
+            return anyModified;
+        }
+
         /// <summary>
         /// Flush modified ranges for a given texture.
         /// </summary>