From 252e93cc9c59efd8175a48002c70d8ce3e88ea25 Mon Sep 17 00:00:00 2001
From: Variable <77773850+Variable-ind@users.noreply.github.com>
Date: Wed, 27 Apr 2022 22:03:56 +0100
Subject: [PATCH] Transparency improvements (#680)

* add limit change with brush

* Delete Draw.gd

* Delete BaseTool.gd

* added error calculation

* revert last commit

* Error calculations

* Update UITransparency.gdshader

* Update UITransparency.gdshader

* Update UITransparency.gdshader

* used "screen_uv" instead of "UV"
---
 src/Shaders/UITransparency.gdshader | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/src/Shaders/UITransparency.gdshader b/src/Shaders/UITransparency.gdshader
index f94461555..baf420116 100644
--- a/src/Shaders/UITransparency.gdshader
+++ b/src/Shaders/UITransparency.gdshader
@@ -5,15 +5,17 @@ uniform float alpha = 0.0;
 uniform vec2 screen_resolution = vec2(1280, 720);
 uniform vec2 position = vec2(100.0, 100.0);
 uniform vec2 size = vec2(100.0, 100.0);
-//1280, 720
+
 
 void fragment(){
 	
 	if (
-	UV.x >= (position.x)/(screen_resolution.x) && UV.y >= (position.y)/(screen_resolution.y)
-		&& 
-	UV.x <= (position.x + size.x)/(screen_resolution.x) && UV.y <= (position.y + size.y)/(screen_resolution.y)
+	SCREEN_UV.x >= (position.x)/(screen_resolution.x) 
+	&& (1.0 - SCREEN_UV.y) >= (position.y)/(screen_resolution.y)
+
+	&& SCREEN_UV.x <= (position.x + size.x)/(screen_resolution.x)
+	&& (1.0 - SCREEN_UV.y) <= (position.y + size.y)/(screen_resolution.y)
 	){
 		COLOR.a = alpha;
 	}
-}
\ No newline at end of file
+}