From b1618fe92a514fe57c062c678b8f769d9db72935 Mon Sep 17 00:00:00 2001
From: Mira Grudzinska <mira@lottiefiles.com>
Date: Tue, 2 Jul 2024 16:30:45 +0200
Subject: [PATCH] sw_engine: fix aa

For shapes with a stroke that has opacity, anti-aliasing
should be applied to a fill.
The use of a transparent gradient stroke will also be handled
correctly.
---
 src/renderer/sw_engine/tvgSwRenderer.cpp | 2 +-
 src/renderer/tvgShape.h                  | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/renderer/sw_engine/tvgSwRenderer.cpp b/src/renderer/sw_engine/tvgSwRenderer.cpp
index 0a3f5ef7..3181cf34 100644
--- a/src/renderer/sw_engine/tvgSwRenderer.cpp
+++ b/src/renderer/sw_engine/tvgSwRenderer.cpp
@@ -86,7 +86,7 @@ struct SwShapeTask : SwTask
        Additionally, the stroke style should not be dashed. */
     bool antialiasing(float strokeWidth)
     {
-        return strokeWidth < 2.0f || rshape->stroke->dashCnt > 0 || rshape->stroke->strokeFirst || rshape->strokeTrim();
+        return strokeWidth < 2.0f || rshape->stroke->dashCnt > 0 || rshape->stroke->strokeFirst || rshape->strokeTrim() || rshape->stroke->color[3] < 255;;
     }
 
     float validStrokeWidth()
diff --git a/src/renderer/tvgShape.h b/src/renderer/tvgShape.h
index c45995a6..ecc58b6c 100644
--- a/src/renderer/tvgShape.h
+++ b/src/renderer/tvgShape.h
@@ -296,6 +296,7 @@ struct Shape::Impl
         if (!rs.stroke) rs.stroke = new RenderStroke();
         if (rs.stroke->fill && rs.stroke->fill != p) delete(rs.stroke->fill);
         rs.stroke->fill = p;
+        rs.stroke->color[3] = 0;
 
         flag |= RenderUpdateFlag::Stroke;
         flag |= RenderUpdateFlag::GradientStroke;