diff --git a/cocos/gfx/webgl/webgl-commands.ts b/cocos/gfx/webgl/webgl-commands.ts
index dab636ac826..6c9cc178790 100644
--- a/cocos/gfx/webgl/webgl-commands.ts
+++ b/cocos/gfx/webgl/webgl-commands.ts
@@ -2772,8 +2772,8 @@ export function WebGLCmdFuncCopyBuffersToTexture (
 
             offset.x =  regionTexOffset.x === 0 ? 0 : alignTo(regionTexOffset.x, blockSizeWidth);
             offset.y =  regionTexOffset.y === 0 ? 0 : alignTo(regionTexOffset.y, blockSizeHeight);
-            extent.width = regionTexExtentWidth < blockSizeWidth ? regionTexExtent.width : alignTo(regionTexExtentWidth, blockSizeWidth);
-            extent.height = regionTexExtentHeight < blockSizeHeight ? regionTexExtent.width
+            extent.width = regionTexExtentWidth < blockSizeWidth ? regionTexExtentWidth : alignTo(regionTexExtentWidth, blockSizeWidth);
+            extent.height = regionTexExtentHeight < blockSizeHeight ? regionTexExtentWidth
                 : alignTo(regionTexExtentHeight, blockSizeHeight);
             stride.width = region.buffStride > 0 ?  region.buffStride : extent.width;
             stride.height = region.buffTexHeight > 0 ? region.buffTexHeight : extent.height;
diff --git a/cocos/gfx/webgl2/webgl2-commands.ts b/cocos/gfx/webgl2/webgl2-commands.ts
index 28a298053ad..1fcd056094f 100644
--- a/cocos/gfx/webgl2/webgl2-commands.ts
+++ b/cocos/gfx/webgl2/webgl2-commands.ts
@@ -2884,7 +2884,7 @@ export function WebGL2CmdFuncCopyBuffersToTexture (
             offset.y =  regionTexOffset.y === 0 ? 0 : alignTo(regionTexOffset.y, blockSizeHeight);
             extent.width = regionTexExtentWidth < blockSizeWidth ? regionTexExtentWidth : alignTo(regionTexExtentWidth, blockSizeWidth);
             extent.height = regionTexExtentHeight < blockSizeHeight ? regionTexExtentWidth
-                : alignTo(regionTexExtent.height, blockSizeHeight);
+                : alignTo(regionTexExtentHeight, blockSizeHeight);
             extent.depth = 1;
             stride.width = regionBuffStride > 0 ?  regionBuffStride : extent.width;
             stride.height = region.buffTexHeight > 0 ? region.buffTexHeight : extent.height;