From cd74ae1bbd491987d983bfff36545451e2e6764c Mon Sep 17 00:00:00 2001
From: gdkchan <gab.dark.100@gmail.com>
Date: Sun, 15 Sep 2024 18:12:05 -0300
Subject: Implement fast DMA texture to texture copy (#7299)

* Implement fast DMA texture to texture copy

* PR feedback
---
 src/Ryujinx.Graphics.Gpu/Image/TextureCache.cs | 47 ++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)

(limited to 'src/Ryujinx.Graphics.Gpu/Image/TextureCache.cs')

diff --git a/src/Ryujinx.Graphics.Gpu/Image/TextureCache.cs b/src/Ryujinx.Graphics.Gpu/Image/TextureCache.cs
index b6fa842e..5a3319b0 100644
--- a/src/Ryujinx.Graphics.Gpu/Image/TextureCache.cs
+++ b/src/Ryujinx.Graphics.Gpu/Image/TextureCache.cs
@@ -347,6 +347,53 @@ namespace Ryujinx.Graphics.Gpu.Image
             return texture;
         }
 
+        /// <summary>
+        /// Tries to find an existing texture, or create a new one if not found.
+        /// </summary>
+        /// <param name="memoryManager">GPU memory manager where the texture is mapped</param>
+        /// <param name="formatInfo">Format of the texture</param>
+        /// <param name="gpuAddress">GPU virtual address of the texture</param>
+        /// <param name="xCount">Texture width in bytes</param>
+        /// <param name="yCount">Texture height</param>
+        /// <param name="stride">Texture stride if linear, otherwise ignored</param>
+        /// <param name="isLinear">Indicates if the texture is linear or block linear</param>
+        /// <param name="gobBlocksInY">GOB blocks in Y for block linear textures</param>
+        /// <param name="gobBlocksInZ">GOB blocks in Z for 3D block linear textures</param>
+        /// <returns>The texture</returns>
+        public Texture FindOrCreateTexture(
+            MemoryManager memoryManager,
+            FormatInfo formatInfo,
+            ulong gpuAddress,
+            int xCount,
+            int yCount,
+            int stride,
+            bool isLinear,
+            int gobBlocksInY,
+            int gobBlocksInZ)
+        {
+            TextureInfo info = new(
+                gpuAddress,
+                xCount / formatInfo.BytesPerPixel,
+                yCount,
+                1,
+                1,
+                1,
+                1,
+                stride,
+                isLinear,
+                gobBlocksInY,
+                gobBlocksInZ,
+                1,
+                Target.Texture2D,
+                formatInfo);
+
+            Texture texture = FindOrCreateTexture(memoryManager, TextureSearchFlags.ForCopy, info, 0, sizeHint: new Size(xCount, yCount, 1));
+
+            texture?.SynchronizeMemory();
+
+            return texture;
+        }
+
         /// <summary>
         /// Tries to find an existing texture, or create a new one if not found.
         /// </summary>
-- 
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