From 5bdb58553411a187e4c6bb4d0aecc58a30775977 Mon Sep 17 00:00:00 2001
From: Hermet Park <hermet@lottiefiles.com>
Date: Wed, 24 Jan 2024 01:38:46 +0900
Subject: [PATCH] sw_engine: Rectified dash line drawing issue.

Omit the dash line when its length falls below a minimal threshold.
This threshold is set to less than 0.0001 times the pixel size.
---
 src/renderer/sw_engine/tvgSwShape.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/renderer/sw_engine/tvgSwShape.cpp b/src/renderer/sw_engine/tvgSwShape.cpp
index 9aa95523..45322c07 100644
--- a/src/renderer/sw_engine/tvgSwShape.cpp
+++ b/src/renderer/sw_engine/tvgSwShape.cpp
@@ -132,7 +132,7 @@ static void _dashLineTo(SwDashStroke& dash, const Point* to, const Matrix* trans
             _outlineLineTo(*dash.outline, to, transform);
         }
     } else {
-        while (len > dash.curLen) {
+        while (len - dash.curLen > 0.0001f) {
             Line left, right;
             if (dash.curLen > 0) {
                 len -= dash.curLen;
@@ -189,7 +189,7 @@ static void _dashCubicTo(SwDashStroke& dash, const Point* ctrl1, const Point* ct
             _outlineCubicTo(*dash.outline, ctrl1, ctrl2, to, transform);
         }
     } else {
-        while (len > dash.curLen) {
+        while ((len - dash.curLen) > 0.0001f) {
             Bezier left, right;
             if (dash.curLen > 0) {
                 len -= dash.curLen;