From f4b6bc79e2b280ec69d71709a330f43e1a6feed7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Branimir=20Karad=C5=BEi=C4=87?= <branimirkaradzic@gmail.com>
Date: Wed, 21 Jan 2026 12:31:19 -0800
Subject: [PATCH] D3D12: Fixed texture update crash. (#3560)

---
 src/renderer_d3d12.cpp | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/src/renderer_d3d12.cpp b/src/renderer_d3d12.cpp
index b35290def..d281eda21 100644
--- a/src/renderer_d3d12.cpp
+++ b/src/renderer_d3d12.cpp
@@ -5876,10 +5876,7 @@ namespace bgfx { namespace d3d12
 		D3D12_RANGE readRange = { 0, 0 };
 		DX_CHECK(staging->Map(0, &readRange, (void**)&dstData) );
 
-		for (uint32_t ii = 0, height = numRows; ii < height; ++ii)
-		{
-			bx::memCopy(&dstData[ii*rowPitch], &srcData[ii*srcpitch], srcpitch);
-		}
+		bx::memCopy(dstData, rowPitch, srcData, srcpitch, rectpitch, numRows);
 
 		if (NULL != temp)
 		{