Update shader for android

shaders/sun_100.fs

@@ -1,17 +1,17 @@
-#version 100
+#version 300 es
 
 precision mediump float;
 
-varying vec2 fragTexCoord;
-varying vec4 fragColor;
-
+in vec2 fragTexCoord;
+in vec4 fragColor;
+out vec4 finalColor;
 
 uniform vec3 color;
-uniform float sun_radius;
-uniform float start_transperency;
-
 vec2 offset = vec2(1.0, 1.0);
-float sun_end = 1.0;
+
+float start_transparency = 0.40f;
+float sun_radius = 0.6f;
+float sun_end = 1.0f;
 
 void main()
 {
@@ -20,17 +20,13 @@ void main()
     float radius = length(offset);
 
     if(radius < sun_radius){
-
-        gl_FragColor = vec4(color, 1.0);
-
+        finalColor = vec4(color, 1.0);
     }else if(radius < sun_end){
-
         float gradient = radius;
         gradient -= sun_radius;
-        gradient = gradient / (sun_end - sun_radius) * start_transperency;
-        gl_FragColor = vec4(color, start_transperency - gradient);
-
+        gradient = gradient / 0.4f * start_transparency;
+        finalColor = vec4(color, start_transparency - gradient);
     }else{
-        gl_FragColor = vec4(color, 0.0);
+        finalColor = vec4(color, 0.0);
     }
-}
+}

shaders/sun_330.fs

@@ -5,9 +5,10 @@ in vec4 fragColor;
 out vec4 finalColor;
 
 uniform vec3 color;
-uniform float sun_radius;
-uniform float start_transperency;
-vec2 offset = vec2(1.0f, 1.0f);
+vec2 offset = vec2(1.0, 1.0);
+
+float start_transparency = 0.40f;
+float sun_radius = 0.6f;
 float sun_end = 1.0f;
 
 void main()
@@ -20,8 +21,8 @@ void main()
     }else if(radius < sun_end){
         float gradient = radius;
         gradient -= sun_radius;
-        gradient = gradient / (sun_end - sun_radius) * start_transperency;
-        finalColor = vec4(color, start_transperency - gradient);
+        gradient = gradient / 0.4f * start_transparency;
+        finalColor = vec4(color, start_transparency - gradient);
     }else{
         finalColor = vec4(color, 0.0f);
     }