experimental map shaders

modules/game_shaders/shaders/party.frag

@@ -0,0 +1,13 @@
+uniform float u_Time;
+uniform sampler2D u_Tex0;
+varying vec2 v_TexCoord;
+
+void main()
+{
+    vec4 col = texture2D(u_Tex0, v_TexCoord);
+    float d = u_Time * 2;
+    col.x += (1.0 + sin(d))*0.25;
+    col.y += (1.0 + sin(d*2))*0.25;
+    col.z += (1.0 + sin(d*4))*0.25;
+    gl_FragColor = col;
+}