Shader cleanup

core/src/mindustry/core/Control.java

@@ -114,6 +114,7 @@ public class Control implements ApplicationListener, Loadable{
 
         //autohost for pvp maps
         Events.on(WorldLoadEvent.class, event -> app.post(() -> {
+            player.add();
             if(state.rules.pvp && !net.active()){
                 try{
                     net.host(port);

core/src/mindustry/core/Renderer.java

@@ -38,6 +38,8 @@ public class Renderer implements ApplicationListener{
     public Renderer(){
         camera = new Camera();
         Shaders.init();
+
+        fx.addEffect(new SnowFilter());
     }
 
     public void shake(float intensity, float duration){

core/src/mindustry/graphics/Shaders.java

@@ -229,7 +229,7 @@ public class Shaders{
 
     public static class LoadShader extends Shader{
         public LoadShader(String frag, String vert){
-            super(Core.files.internal("shaders/" + vert + ".vertex.glsl"), Core.files.internal("shaders/" + frag + ".fragment.glsl"));
+            super(Core.files.internal("shaders/" + vert + ".vert"), Core.files.internal("shaders/" + frag + ".frag"));
         }
     }
 }

core/src/mindustry/graphics/SnowFilter.java

@@ -0,0 +1,19 @@
+package mindustry.graphics;
+
+import arc.*;
+import arc.fx.*;
+
+public class SnowFilter extends FxFilter{
+
+    public SnowFilter(){
+        super(compileShader(Core.files.internal("shaders/screenspace.vert"), Core.files.internal("shaders/snow.frag")));
+        autobind = true;
+    }
+
+    @Override
+    public void setParams(){
+        shader.setUniformf("u_time", time / 60f);
+        shader.setUniformf("u_pos", Core.camera.position.x - Core.camera.width / 2, Core.camera.position.y - Core.camera.height / 2);
+        shader.setUniformf("u_resolution", Core.camera.width, Core.camera.height);
+    }
+}