diff --git a/Assets/common/shader_datas.arm b/Assets/common/shader_datas.arm
index 39a339b9..8c2f40eb 100644
Binary files a/Assets/common/shader_datas.arm and b/Assets/common/shader_datas.arm differ
diff --git a/Sources/arm/History.hx b/Sources/arm/History.hx
index 5efcffbc..28b1b4ae 100644
--- a/Sources/arm/History.hx
+++ b/Sources/arm/History.hx
@@ -418,7 +418,7 @@ class History {
 		if (isMask) {
 			path.setTarget("texpaint_mask_undo" + toId);
 			path.bindTarget("texpaint_mask" + fromId, "tex");
-			path.drawShader("shader_datas/copy_pass/copy_pass");
+			path.drawShader("shader_datas/copy_pass/copyR8_pass");
 		}
 		else {
 			path.setTarget("texpaint_undo" + toId, ["texpaint_nor_undo" + toId, "texpaint_pack_undo" + toId]);
diff --git a/Sources/arm/render/RenderPathDeferred.hx b/Sources/arm/render/RenderPathDeferred.hx
index f96bb2f5..746c2f25 100644
--- a/Sources/arm/render/RenderPathDeferred.hx
+++ b/Sources/arm/render/RenderPathDeferred.hx
@@ -134,6 +134,7 @@ class RenderPathDeferred {
 		path.loadShader("deferred_light/deferred_light/deferred_light");
 		path.loadShader("shader_datas/compositor_pass/compositor_pass");
 		path.loadShader("shader_datas/copy_pass/copy_pass");
+		path.loadShader("shader_datas/copy_pass/copyR8_pass");
 		path.loadShader("shader_datas/smaa_edge_detect/smaa_edge_detect");
 		path.loadShader("shader_datas/smaa_blend_weight/smaa_blend_weight");
 		path.loadShader("shader_datas/smaa_neighborhood_blend/smaa_neighborhood_blend");
diff --git a/Sources/arm/render/RenderPathPaint.hx b/Sources/arm/render/RenderPathPaint.hx
index 413decdc..11205fa5 100644
--- a/Sources/arm/render/RenderPathPaint.hx
+++ b/Sources/arm/render/RenderPathPaint.hx
@@ -197,7 +197,7 @@ class RenderPathPaint {
 
 				path.setTarget("texpaint_blend1");
 				path.bindTarget("texpaint_blend0", "tex");
-				path.drawShader("shader_datas/copy_pass/copy_pass");
+				path.drawShader("shader_datas/copy_pass/copyR8_pass");
 
 				var isMask = Context.layerIsMask;
 				var texpaint = isMask ? "texpaint_mask" + tid : "texpaint" + tid;