[deploy] pref: auto enable text pre render mode

KiwanoEngine · Sep 13, 2023 · 946bada · 946bada
1 parent 6f880db
commit 946bada
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Showing 3 changed files with 29 additions and 12 deletions.
diff --git a/src/kiwano/2d/TextActor.cpp b/src/kiwano/2d/TextActor.cpp
@@ -222,16 +222,20 @@ void TextActor::SetTextLayout(TextLayoutPtr layout)
 
 void TextActor::SetPreRenderEnabled(bool enable)
 {
-    if (enable)
+    const bool enabled = texture_cached_ != nullptr;
+    if (enabled != enable)
     {
-        texture_cached_ = MakePtr<Texture>();
-    }
-    else
-    {
-        texture_cached_ = nullptr;
+        if (enable)
+        {
+            texture_cached_ = MakePtr<Texture>();
+        }
+        else
+        {
+            texture_cached_ = nullptr;
+        }
+        render_ctx_     = nullptr;
+        is_cache_dirty_ = true;
     }
-    render_ctx_     = nullptr;
-    is_cache_dirty_ = true;
 }
 
 void TextActor::Update(Duration dt)
@@ -273,6 +277,10 @@ void TextActor::ForceUpdateLayout()
 
 void TextActor::UpdateCachedTexture()
 {
+    // 有文字描边或其他额外渲染时，需要开启预渲染以提升性能
+    this->SetPreRenderEnabled(outline_brush_ || style_.show_strikethrough || style_.show_underline
+                              || (layout_ && layout_->GetContentLength() > 30));
+
     if (!texture_cached_)
     {
         return;

diff --git a/src/kiwano/2d/TextActor.h b/src/kiwano/2d/TextActor.h
@@ -142,10 +142,6 @@ class KGE_API TextActor : public Actor
     /// @brief 设置文本布局
     void SetTextLayout(TextLayoutPtr layout);
 
-    /// \~chinese
-    /// @brief 设置预渲染模式，在描边等情况下会有更好的性能
-    void SetPreRenderEnabled(bool enable);
-
     /// \~chinese
     /// @brief 更新脏文字布局
     /// @details 仅当文字布局脏时更新
@@ -165,6 +161,10 @@ class KGE_API TextActor : public Actor
 
     void UpdateCachedTexture();
 
+    /// \~chinese
+    /// @brief 设置预渲染模式，在描边等情况下会有更好的性能
+    void SetPreRenderEnabled(bool enable);
+
 private:
     bool             is_cache_dirty_;
     String           content_;

diff --git a/src/kiwano/render/TextLayout.h b/src/kiwano/render/TextLayout.h
@@ -68,6 +68,10 @@ class KGE_API TextLayout : public NativeObject
     /// @brief 获取文本行数
     uint32_t GetLineCount() const;
 
+    /// \~chinese
+    /// @brief 获取文本长度
+    uint32_t GetContentLength() const;
+
     /// \~chinese
     /// @brief 设置字体
     /// @param font 字体
@@ -136,6 +140,11 @@ inline void TextLayout::Clear()
     ResetNativePointer();
 }
 
+inline uint32_t TextLayout::GetContentLength() const
+{
+    return content_length_;
+}
+
 inline TextLayout::DirtyFlag TextLayout::GetDirtyFlag() const
 {
     return dirty_flag_;