From 5f1958e62dc4644f0d1500933d5679117a5c5af9 Mon Sep 17 00:00:00 2001
From: Recrown <yunyangdeng@gmail.com>
Date: Tue, 18 Jul 2017 00:14:53 -0500
Subject: [PATCH] different glow shader test?

---
 android/assets/shaders/glow_frag.glsl         | 57 ++++++++++---------
 .../polyjet/ui/stages/GamePlayArea.java       |  2 +-
 2 files changed, 32 insertions(+), 27 deletions(-)

diff --git a/android/assets/shaders/glow_frag.glsl b/android/assets/shaders/glow_frag.glsl
index d31d8a0..cd77c39 100755
--- a/android/assets/shaders/glow_frag.glsl
+++ b/android/assets/shaders/glow_frag.glsl
@@ -1,37 +1,42 @@
 #ifdef GL_ES
 #define LOWP lowp
-    precision mediump float;
+precision mediump float;
 #else
-    #define LOWP
+#define LOWP
 #endif
+
 varying LOWP vec4 vColor;
 varying vec2 vTexCoord;
 
 uniform sampler2D u_texture;
-uniform float resolution;
-uniform float radius;
-uniform vec2 dir;
 
-void main() {
+void main()
+{
+   vec4 sum = vec4(0);
+   vec2 texcoord = vTexCoord;
+   int j;
+   int i;
 
-	vec4 sum = vec4(0.0);
-	vec2 tc = vTexCoord;
-	float blur = radius/resolution;
-
-	float hstep = dir.x;
-	float vstep = dir.y;
-
-	sum += texture2D(u_texture, vec2(tc.x - 4.0*blur*hstep, tc.y - 4.0*blur*vstep)) * 0.05;
-	sum += texture2D(u_texture, vec2(tc.x - 3.0*blur*hstep, tc.y - 3.0*blur*vstep)) * 0.09;
-	sum += texture2D(u_texture, vec2(tc.x - 2.0*blur*hstep, tc.y - 2.0*blur*vstep)) * 0.12;
-	sum += texture2D(u_texture, vec2(tc.x - 1.0*blur*hstep, tc.y - 1.0*blur*vstep)) * 0.15;
-
-	sum += texture2D(u_texture, vec2(tc.x, tc.y)) * 0.16;
-
-	sum += texture2D(u_texture, vec2(tc.x + 1.0*blur*hstep, tc.y + 1.0*blur*vstep)) * 0.15;
-	sum += texture2D(u_texture, vec2(tc.x + 2.0*blur*hstep, tc.y + 2.0*blur*vstep)) * 0.12;
-	sum += texture2D(u_texture, vec2(tc.x + 3.0*blur*hstep, tc.y + 3.0*blur*vstep)) * 0.09;
-	sum += texture2D(u_texture, vec2(tc.x + 4.0*blur*hstep, tc.y + 4.0*blur*vstep)) * 0.05;
-
-	gl_FragColor = vColor * vec4(sum.rgb, 1.0);
+   for( i= -4 ;i < 4; i++)
+   {
+        for (j = -3; j < 3; j++)
+        {
+            sum += texture2D(u_texture, texcoord + vec2(j, i)*0.004) * 0.25;
+        }
+   }
+       if (texture2D(u_texture, texcoord).r < 0.3)
+    {
+       gl_FragColor = sum*sum*0.012 + texture2D(u_texture, texcoord);
+    }
+    else
+    {
+        if (texture2D(u_texture, texcoord).r < 0.5)
+        {
+            gl_FragColor = sum*sum*0.009 + texture2D(u_texture, texcoord);
+        }
+        else
+        {
+            gl_FragColor = sum*sum*0.0075 + texture2D(u_texture, texcoord);
+        }
+    }
 }
diff --git a/core/src/zero1hd/polyjet/ui/stages/GamePlayArea.java b/core/src/zero1hd/polyjet/ui/stages/GamePlayArea.java
index 7c7f6e6..918567d 100755
--- a/core/src/zero1hd/polyjet/ui/stages/GamePlayArea.java
+++ b/core/src/zero1hd/polyjet/ui/stages/GamePlayArea.java
@@ -100,8 +100,8 @@ public class GamePlayArea extends Stage {
 		
 		if (bgShader != null) {
 			getBatch().setShader(bgShader);
-			bgShader.setUniformf("resolution", background.getWidth(), background.getHeight());
 			bgShader.setUniformf("time", time);
+			bgShader.setUniformf("resolution", background.getWidth(), background.getHeight());
 		}
 		getBatch().draw(background, 0f, 0f, Polyjet.GAME_AREA_WIDTH, Polyjet.GAME_AREA_HEIGHT);
 		getBatch().end();