From dce14a84490769afaac408ff6ce4678596980eda Mon Sep 17 00:00:00 2001
From: Hermet Park <hermet@lottiefiles.com>
Date: Mon, 26 Jun 2023 12:40:03 +0900
Subject: [PATCH] common: promote MULTIPLY() to a common helper macro.

it's useful among the modules.
---
 src/lib/sw_engine/tvgSwCommon.h | 5 -----
 src/lib/tvgPaint.cpp            | 2 +-
 src/lib/tvgRender.h             | 6 ++++++
 3 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/src/lib/sw_engine/tvgSwCommon.h b/src/lib/sw_engine/tvgSwCommon.h
index 3e482771..a39d4798 100644
--- a/src/lib/sw_engine/tvgSwCommon.h
+++ b/src/lib/sw_engine/tvgSwCommon.h
@@ -307,11 +307,6 @@ static inline SwCoord HALF_STROKE(float width)
     return TO_SWCOORD(width * 0.5f);
 }
 
-static inline uint8_t MULTIPLY(uint8_t c, uint8_t a)
-{
-    return (((c) * (a) + 0xff) >> 8);
-}
-
 static inline uint8_t A(uint32_t c)
 {
     return ((c) >> 24);
diff --git a/src/lib/tvgPaint.cpp b/src/lib/tvgPaint.cpp
index 6580b53a..f5dca0f1 100644
--- a/src/lib/tvgPaint.cpp
+++ b/src/lib/tvgPaint.cpp
@@ -245,7 +245,7 @@ RenderData Paint::Impl::update(RenderMethod& renderer, const RenderTransform* pT
     RenderData rd = nullptr;
     auto newFlag = static_cast<RenderUpdateFlag>(pFlag | renderFlag);
     renderFlag = RenderUpdateFlag::None;
-    opacity = ((opacity * this->opacity + 0xff) >> 8);      //opacity = (opacity * this->opacity) / 255;
+    opacity = MULTIPLY(opacity, this->opacity);
 
     if (rTransform && pTransform) {
         RenderTransform outTransform(pTransform, rTransform);
diff --git a/src/lib/tvgRender.h b/src/lib/tvgRender.h
index e0fb43d8..9106ba76 100644
--- a/src/lib/tvgRender.h
+++ b/src/lib/tvgRender.h
@@ -316,6 +316,12 @@ static inline ColorSpace COMPOSITE_TO_COLORSPACE(RenderMethod& renderer, Composi
     }
 }
 
+static inline uint8_t MULTIPLY(uint8_t c, uint8_t a)
+{
+    return (((c) * (a) + 0xff) >> 8);
+}
+
+
 }
 
 #endif //_TVG_RENDER_H_