From f21dae63390aa872062bcfc96fc6817b0fcfe601 Mon Sep 17 00:00:00 2001
From: Thomas--S <Thomas--S@users.noreply.github.com>
Date: Sat, 2 Jul 2016 17:58:08 +0200
Subject: Add an [opacity:<r> texture modifier. Makes the base image
 transparent according to the given ratio. r must be between 0 and 255. 0
 means totally transparent. 255 means totally opaque. Useful for texture
 overlaying.

---
 doc/lua_api.txt | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'doc')

diff --git a/doc/lua_api.txt b/doc/lua_api.txt
index ce40e082c..182f5c821 100644
--- a/doc/lua_api.txt
+++ b/doc/lua_api.txt
@@ -292,6 +292,16 @@ Example:
 
     default_sandstone.png^[resize:16x16
 
+#### `[opacity:<r>`
+    Makes the base image transparent according to the given ratio.
+    r must be between 0 and 255.
+    0 means totally transparent.
+    255 means totally opaque.
+
+Example:
+
+    default_sandstone.png^[opacity:127
+
 #### `[brighten`
 Brightens the texture.
 
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