From e5116104261fe3649c56ecc2baf5d8a8636d33fb Mon Sep 17 00:00:00 2001
From: "Prof. 9" <prof9@outlook.com>
Date: Mon, 13 Mar 2017 18:49:51 +0100
Subject: [PATCH] Fix Wii U shader for OpenGL ES 2.0/OpenGL 2.1.

---
 res/shaders/wiiu.shader/wiiu.fs | 37 ++++++++++++++++++++-------------
 1 file changed, 22 insertions(+), 15 deletions(-)

diff --git a/res/shaders/wiiu.shader/wiiu.fs b/res/shaders/wiiu.shader/wiiu.fs
index 268c5d229..fcfb60bb7 100644
--- a/res/shaders/wiiu.shader/wiiu.fs
+++ b/res/shaders/wiiu.shader/wiiu.fs
@@ -2,21 +2,28 @@ varying vec2 texCoord;
 uniform sampler2D tex;
 uniform vec2 texSize;
 
-const float scale[32] = float[](
-	  0.0/255.0,   6.0/255.0,  12.0/255.0,  18.0/255.0,  24.0/255.0,  31.0/255.0,  37.0/255.0,  43.0/255.0,
-	 49.0/255.0,  55.0/255.0,  61.0/255.0,  67.0/255.0,  73.0/255.0,  79.0/255.0,  86.0/255.0,  92.0/255.0,
-	 98.0/255.0, 104.0/255.0, 111.0/255.0, 117.0/255.0, 123.0/255.0, 129.0/255.0, 135.0/255.0, 141.0/255.0,
-	148.0/255.0, 154.0/255.0, 159.0/255.0, 166.0/255.0, 172.0/255.0, 178.0/255.0, 184.0/255.0, 191.0/255.0
-);
-
 void main() {
+	float scale[32];
+	scale[ 0] =   0.0/255.0; scale[ 1] = 6.0/255.0;
+	scale[ 2] =  12.0/255.0; scale[ 3] = 18.0/255.0;
+	scale[ 4] =  24.0/255.0; scale[ 5] = 31.0/255.0;
+	scale[ 6] =  37.0/255.0; scale[ 7] = 43.0/255.0;
+	scale[ 8] =  49.0/255.0; scale[ 9] = 55.0/255.0;
+	scale[10] =  61.0/255.0; scale[11] = 67.0/255.0;
+	scale[12] =  73.0/255.0; scale[13] = 79.0/255.0;
+	scale[14] =  86.0/255.0; scale[15] = 92.0/255.0;
+	scale[16] =  98.0/255.0; scale[17] = 104.0/255.0;
+	scale[18] = 111.0/255.0; scale[19] = 117.0/255.0;
+	scale[20] = 123.0/255.0; scale[21] = 129.0/255.0;
+	scale[22] = 135.0/255.0; scale[23] = 141.0/255.0;
+	scale[24] = 148.0/255.0; scale[25] = 154.0/255.0;
+	scale[26] = 159.0/255.0; scale[27] = 166.0/255.0;
+	scale[28] = 172.0/255.0; scale[29] = 178.0/255.0;
+	scale[30] = 184.0/255.0; scale[31] = 191.0/255.0;
+	
 	vec4 color = texture2D(tex, texCoord);
-	color.rgb = round(color.rgb * 31.0);
-	color = vec4(
-		scale[int(color.r)],
-		scale[int(color.g)],
-		scale[int(color.b)],
-		1.0
-	);
+	color.r = scale[int(floor(color.r * 31.0 + 0.5))];
+	color.g = scale[int(floor(color.g * 31.0 + 0.5))];
+	color.b = scale[int(floor(color.b * 31.0 + 0.5))];
 	gl_FragColor = color;
-}
\ No newline at end of file
+}