diff --git a/include/gfx/gfx.h b/include/gfx/gfx.h
index 893bac1..e897d18 100644
--- a/include/gfx/gfx.h
+++ b/include/gfx/gfx.h
@@ -154,6 +154,7 @@ void gfx_copy_rot_zoom_amap(Texture *dst, Texture *src, int sx, int sy, int w, i
 void gfx_copy_rot_zoom_use_amap(Texture *dst, Texture *src, int sx, int sy, int w, int h, float rotate, float mag);
 void gfx_copy_root_zoom2(Texture *dst, float cx, float cy, Texture *src, float scx, float scy, float rot, float mag);
 void gfx_copy_reverse_LR(Texture *dst, int dx, int dy, Texture *src, int sx, int sy, int w, int h);
+void gfx_copy_reverse_UD(Texture *dst, int dx, int dy, Texture *src, int sx, int sy, int w, int h);
 void gfx_copy_reverse_amap_LR(Texture *dst, int dx, int dy, Texture *src, int sx, int sy, int w, int h);
 void gfx_copy_rotate_y(Texture *dst, Texture *front, Texture *back, int sx, int sy, int w, int h, float rot, float mag);
 void gfx_copy_rotate_y_use_amap(Texture *dst, Texture *front, Texture *back, int sx, int sy, int w, int h, float rot, float mag);
diff --git a/src/draw.c b/src/draw.c
index 165380e..ecfbf45 100644
--- a/src/draw.c
+++ b/src/draw.c
@@ -891,6 +891,23 @@ void gfx_copy_reverse_LR(Texture *dst, int dx, int dy, Texture *src, int sx, int
 	restore_blend_mode();
 }
 
+void gfx_copy_reverse_UD(Texture *dst, int dx, int dy, Texture *src, int sx, int sy, int w, int h)
+{
+	mat4 mw_transform = MAT4(
+	     src->w, 0,       0, -sx,
+	     0,      -src->h, 0, sy + h,
+	     0,      0,       1, 0,
+	     0,      0,       0, 1);
+	mat4 wv_transform = WV_TRANSFORM(w, h);
+
+	glBlendFuncSeparate(GL_ONE, GL_ZERO, GL_ZERO, GL_ONE);
+
+	struct copy_data data = COPY_DATA(dx, dy, sx, sy, w, h);
+	run_draw_shader(&copy_shader.s, dst, src, mw_transform, wv_transform, &data);
+
+	restore_blend_mode();
+}
+
 void gfx_copy_reverse_amap_LR(Texture *dst, int dx, int dy, Texture *src, int sx, int sy, int w, int h)
 {
 	mat4 mw_transform = MAT4(
diff --git a/src/hll/DrawGraph.c b/src/hll/DrawGraph.c
index e4ba504..d8de2b5 100644
--- a/src/hll/DrawGraph.c
+++ b/src/hll/DrawGraph.c
@@ -338,7 +338,10 @@ static void DrawGraph_CopyReverseLR(int dst, int dx, int dy, int src, int sx, in
 	gfx_copy_reverse_LR(DTEX(dst), dx, dy, STEX(src), sx, sy, w, h);
 }
 
-//void DrawGraph_CopyReverseUD(int dst, int dx, int dy, int src, int sx, int sy, int w, int h);
+static void DrawGraph_CopyReverseUD(int dst, int dx, int dy, int src, int sx, int sy, int w, int h)
+{
+	gfx_copy_reverse_UD(DTEX(dst), dx, dy, STEX(src), sx, sy, w, h);
+}
 
 static void DrawGraph_CopyReverseAMapLR(int dst, int dx, int dy, int src, int sx, int sy, int w, int h)
 {
@@ -495,7 +498,7 @@ HLL_LIBRARY(DrawGraph,
 	    //HLL_EXPORT(CopyRotateXFixUUseAMap, DrawGraph_CopyRotateXFixUUseAMap),
 	    //HLL_EXPORT(CopyRotateXFixDUseAMap, DrawGraph_CopyRotateXFixDUseAMap),
 	    HLL_EXPORT(CopyReverseLR, DrawGraph_CopyReverseLR),
-	    //HLL_EXPORT(CopyReverseUD, DrawGraph_CopyReverseUD),
+	    HLL_EXPORT(CopyReverseUD, DrawGraph_CopyReverseUD),
 	    HLL_EXPORT(CopyReverseAMapLR, DrawGraph_CopyReverseAMapLR),
 	    //HLL_EXPORT(CopyReverseAMapUD, DrawGraph_CopyReverseAMapUD),
 	    HLL_EXPORT(CopyWidthBlur, DrawGraph_CopyWidthBlur),
diff --git a/src/hll/Gpx2Plus.c b/src/hll/Gpx2Plus.c
index e59105b..2a3458c 100644
--- a/src/hll/Gpx2Plus.c
+++ b/src/hll/Gpx2Plus.c
@@ -372,7 +372,14 @@ static void Gpx2Plus_CopyReverseLR(int destSurface, int dx, int dy, int srcSurfa
 	gfx_copy_reverse_LR(dst, dx, dy, src, sx, sy, width, height);
 }
 
-// void CopyReverseUD(int nDestSurface, int nDx, int nDy, int nSrcSurface, int nSx, int nSy, int nWidth, int nHeight);
+static void Gpx2Plus_CopyReverseUD(int destSurface, int dx, int dy, int srcSurface, int sx, int sy, int width, int height)
+{
+	struct texture *dst = get_texture(destSurface);
+	struct texture *src = get_texture(srcSurface);
+	if (!dst || !src)
+		return;
+	gfx_copy_reverse_UD(dst, dx, dy, src, sx, sy, width, height);
+}
 
 static void Gpx2Plus_CopyReverseAMapLR(int destSurface, int dx, int dy, int srcSurface, int sx, int sy, int width, int height)
 {
@@ -745,7 +752,7 @@ HLL_LIBRARY(Gpx2Plus,
 			HLL_EXPORT(CopyStretchReduce, Gpx2Plus_CopyStretchReduce),
 			HLL_EXPORT(CopyStretchReduceAMap, Gpx2Plus_CopyStretchReduceAMap),
 			HLL_EXPORT(CopyReverseLR, Gpx2Plus_CopyReverseLR),
-			// HLL_EXPORT(CopyReverseUD, Gpx2Plus_CopyReverseUD),
+			HLL_EXPORT(CopyReverseUD, Gpx2Plus_CopyReverseUD),
 			HLL_EXPORT(CopyReverseAMapLR, Gpx2Plus_CopyReverseAMapLR),
 			// HLL_EXPORT(CopyReverseAMapUD, Gpx2Plus_CopyReverseAMapUD),
 			// HLL_EXPORT(BlendScreenWDS, Gpx2Plus_BlendScreenWDS),