From 62c186e14b35d896d67172bc5092df2af59e715e Mon Sep 17 00:00:00 2001
From: iwubcode <iwubcode@users.noreply.github.com>
Date: Sat, 25 Jun 2022 00:42:17 -0500
Subject: [PATCH] VideoCommon: add UninitializeEFBMemory to mirror XFB function

---
 Source/Core/VideoCommon/TextureCacheBase.cpp | 24 ++++++++++++--------
 Source/Core/VideoCommon/TextureCacheBase.h   |  1 +
 2 files changed, 16 insertions(+), 9 deletions(-)

diff --git a/Source/Core/VideoCommon/TextureCacheBase.cpp b/Source/Core/VideoCommon/TextureCacheBase.cpp
index 0ed5ffe014..195e4f9443 100644
--- a/Source/Core/VideoCommon/TextureCacheBase.cpp
+++ b/Source/Core/VideoCommon/TextureCacheBase.cpp
@@ -2225,15 +2225,7 @@ void TextureCacheBase::CopyRenderTargetToTexture(
     }
     else
     {
-      // Hack: Most games don't actually need the correct texture data in RAM
-      //       and we can just keep a copy in VRAM. We zero the memory so we
-      //       can check it hasn't changed before using our copy in VRAM.
-      u8* ptr = dst;
-      for (u32 i = 0; i < num_blocks_y; i++)
-      {
-        std::memset(ptr, 0, bytes_per_row);
-        ptr += dstStride;
-      }
+      UninitializeEFBMemory(dst, dstStride, bytes_per_row, num_blocks_y);
     }
   }
 
@@ -2403,6 +2395,20 @@ void TextureCacheBase::ReleaseEFBCopyStagingTexture(std::unique_ptr<AbstractStag
   m_efb_copy_staging_texture_pool.push_back(std::move(tex));
 }
 
+void TextureCacheBase::UninitializeEFBMemory(u8* dst, u32 stride, u32 bytes_per_row,
+                                             u32 num_blocks_y)
+{
+  // Hack: Most games don't actually need the correct texture data in RAM
+  //       and we can just keep a copy in VRAM. We zero the memory so we
+  //       can check it hasn't changed before using our copy in VRAM.
+  u8* ptr = dst;
+  for (u32 i = 0; i < num_blocks_y; i++)
+  {
+    std::memset(ptr, 0, bytes_per_row);
+    ptr += stride;
+  }
+}
+
 void TextureCacheBase::UninitializeXFBMemory(u8* dst, u32 stride, u32 bytes_per_row,
                                              u32 num_blocks_y)
 {
diff --git a/Source/Core/VideoCommon/TextureCacheBase.h b/Source/Core/VideoCommon/TextureCacheBase.h
index 503d2544b5..3247c9f929 100644
--- a/Source/Core/VideoCommon/TextureCacheBase.h
+++ b/Source/Core/VideoCommon/TextureCacheBase.h
@@ -331,6 +331,7 @@ private:
   TexAddrCache::iterator InvalidateTexture(TexAddrCache::iterator t_iter,
                                            bool discard_pending_efb_copy = false);
 
+  void UninitializeEFBMemory(u8* dst, u32 stride, u32 bytes_per_row, u32 num_blocks_y);
   void UninitializeXFBMemory(u8* dst, u32 stride, u32 bytes_per_row, u32 num_blocks_y);
 
   // Precomputing the coefficients for the previous, current, and next lines for the copy filter.