From 9d3104fe9606ba0abd80b914ed690e6c5a5da4c4 Mon Sep 17 00:00:00 2001
From: miku-666 <74728189+NessieHax@users.noreply.github.com>
Date: Sun, 9 Apr 2023 19:20:12 +0200
Subject: [PATCH] Added 'BlendMode.Screen'

---
 PCK-Studio/Classes/Extensions/BlendMode.cs       | 3 ++-
 PCK-Studio/Classes/Extensions/ImageExtensions.cs | 1 +
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/PCK-Studio/Classes/Extensions/BlendMode.cs b/PCK-Studio/Classes/Extensions/BlendMode.cs
index 96cfc36e..7fb02709 100644
--- a/PCK-Studio/Classes/Extensions/BlendMode.cs
+++ b/PCK-Studio/Classes/Extensions/BlendMode.cs
@@ -7,6 +7,7 @@
         Multiply,
         Average,
         DescendingOrder,
-        AscendingOrder
+        AscendingOrder,
+        Screen
     }
 }
\ No newline at end of file
diff --git a/PCK-Studio/Classes/Extensions/ImageExtensions.cs b/PCK-Studio/Classes/Extensions/ImageExtensions.cs
index 180ff5dc..ee800247 100644
--- a/PCK-Studio/Classes/Extensions/ImageExtensions.cs
+++ b/PCK-Studio/Classes/Extensions/ImageExtensions.cs
@@ -201,6 +201,7 @@ namespace PckStudio.Extensions
                 BlendMode.Average => (source + overlay) / 2.0f,
                 BlendMode.AscendingOrder => source > overlay ? overlay : source,
                 BlendMode.DescendingOrder => source < overlay ? overlay : source,
+                BlendMode.Screen => 1f - (1f - source)*(1f - overlay),
                 _ => 0.0f
             };
             return (byte)Clamp(resultValue * 255, 0, 255);