Major refactoring + web adaptation

shaders/spark.fragment

@@ -1,12 +1,9 @@
-//precision mediump float;
+precision mediump float;
 uniform sampler2D Texture;
 varying vec2 texCoord;
 
 void main() 
 {
 	vec4 color = texture2D(Texture,texCoord).rgba;
-    //gl_FragColor = vec4(color.rgb*0.9 + vec3(0.1, 0.1, 0.1), 1.0);
-	
 	gl_FragColor = color;
-	
 }