From 59752120d683394d9292895bcc61e4879d9c2e83 Mon Sep 17 00:00:00 2001
From: lightningterror <lightningterror@yahoo.com>
Date: Tue, 18 Dec 2018 08:31:20 +0100
Subject: [PATCH] tfx.fx: Add support for dfmt to pick the shader for 16bit
 alpha output.

---
 plugins/GSdx/res/tfx.fx | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/plugins/GSdx/res/tfx.fx b/plugins/GSdx/res/tfx.fx
index 002855c672..3208c85e29 100644
--- a/plugins/GSdx/res/tfx.fx
+++ b/plugins/GSdx/res/tfx.fx
@@ -39,6 +39,7 @@
 #define PS_POINT_SAMPLER 0
 #define PS_SHUFFLE 0
 #define PS_READ_BA 0
+#define PS_DFMT 0
 #define PS_DEPTH_FMT 0
 #define PS_PAL_FMT 0
 #define PS_CHANNEL_FETCH 0
@@ -1002,13 +1003,13 @@ PS_OUTPUT ps_main(PS_INPUT input)
 
 	output.c1 = c.a * 2; // used for alpha blending
 
-	if(PS_AOUT) // 16 bit output
+	if((PS_DFMT == FMT_16) || PS_AOUT) // 16 bit output
 	{
 		float a = 128.0f / 255; // alpha output will be 0x80
 
 		c.a = PS_FBA ? a : step(0.5, c.a) * a;
 	}
-	else if(PS_FBA)
+	else if((PS_DFMT == FMT_32) && PS_FBA)
 	{
 		if(c.a < 0.5) c.a += 0.5;
 	}