From fa4ae7800b700ce429822abb734a39556035c946 Mon Sep 17 00:00:00 2001
From: lightningterror <lightningterror@yahoo.com>
Date: Mon, 14 Jan 2019 17:01:17 +0100
Subject: [PATCH] tfx.fx: Adjust some blending factors

255.0f / 128.0f gives us 1.9921875.
128.0f / 255.0f gives us 0.50196078431.
Which are more accurate.
Fixes regression in dbz bt3 where characters appeared darker.
---
 plugins/GSdx/res/tfx.fx | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/plugins/GSdx/res/tfx.fx b/plugins/GSdx/res/tfx.fx
index ea07c03b10..11769ac2fd 100644
--- a/plugins/GSdx/res/tfx.fx
+++ b/plugins/GSdx/res/tfx.fx
@@ -890,7 +890,7 @@ PS_OUTPUT ps_main(PS_INPUT input)
 		}
 	}
 
-	output.c1 = c.a * 2; // used for alpha blending
+	output.c1 = c.a * 255.0f / 128.0f; // used for alpha blending
 
 	if((PS_DFMT == FMT_16) || PS_AOUT) // 16 bit output
 	{
@@ -900,7 +900,7 @@ PS_OUTPUT ps_main(PS_INPUT input)
 	}
 	else if((PS_DFMT == FMT_32) && PS_FBA)
 	{
-		if(c.a < 0.5) c.a += 0.5;
+		if(c.a < 0.5) c.a += 128.0f/255.0f;
 	}
 
 	output.c0 = c;