Minor optimization

src/render/mod.rs

@@ -189,6 +189,7 @@ impl Renderer {
         // Clouds
 
         gl::blend_func(gl::SRC_ALPHA, gl::ONE_MINUS_SRC_ALPHA);
+        gl::depth_func(gl::LESS_OR_EQUAL);
 
         Renderer {
             resource_version: version,

src/render/ui.rs

@@ -144,7 +144,6 @@ impl UIState {
         }
         // Prevent clipping with the world
         gl::clear(gl::ClearFlags::Depth);
-        gl::depth_func(gl::LESS_OR_EQUAL);
         gl::enable(gl::BLEND);
         gl::blend_func(gl::SRC_ALPHA, gl::ONE_MINUS_SRC_ALPHA);