From d72cd62aa2f3d1233d13dd144ef871d9c11468c6 Mon Sep 17 00:00:00 2001
From: Jonas Matser <github@jonasmatser.nl>
Date: Mon, 22 Feb 2021 09:38:28 +0100
Subject: [PATCH 1/3] Adds UiRenderGraphConfig

---
 crates/bevy_ui/src/lib.rs        | 17 ++++++++++++++---
 crates/bevy_ui/src/render/mod.rs | 32 +++++++++++++++++++++++---------
 2 files changed, 37 insertions(+), 12 deletions(-)

diff --git a/crates/bevy_ui/src/lib.rs b/crates/bevy_ui/src/lib.rs
index b066e1d29ea7b..463976518cb6c 100644
--- a/crates/bevy_ui/src/lib.rs
+++ b/crates/bevy_ui/src/lib.rs
@@ -24,8 +24,17 @@ use bevy_ecs::{IntoSystem, ParallelSystemDescriptorCoercion, SystemStage};
 use bevy_render::render_graph::RenderGraph;
 use update::ui_z_system;
 
-#[derive(Default)]
-pub struct UiPlugin;
+pub struct UiPlugin {
+    ui_render_graph_config: Option<UiRenderGraphConfig>,
+}
+
+impl Default for UiPlugin {
+    fn default() -> Self {
+        Self {
+            ui_render_graph_config: Some(UiRenderGraphConfig::default()),
+        }
+    }
+}
 
 pub mod stage {
     pub const UI: &str = "ui";
@@ -56,6 +65,8 @@ impl Plugin for UiPlugin {
 
         let resources = app.resources();
         let mut render_graph = resources.get_mut::<RenderGraph>().unwrap();
-        render_graph.add_ui_graph(resources);
+        if let Some(ref config) = self.ui_render_graph_config {
+            render_graph.add_ui_graph(config, resources);
+        }
     }
 }
diff --git a/crates/bevy_ui/src/render/mod.rs b/crates/bevy_ui/src/render/mod.rs
index 50e92d883d899..f947347bbe715 100644
--- a/crates/bevy_ui/src/render/mod.rs
+++ b/crates/bevy_ui/src/render/mod.rs
@@ -77,12 +77,24 @@ pub mod camera {
     pub const CAMERA_UI: &str = "CameraUi";
 }
 
+pub struct UiRenderGraphConfig {
+    connect_ui_pass_to_main_depth_texture: bool,
+}
+
+impl Default for UiRenderGraphConfig {
+    fn default() -> Self {
+        Self {
+            connect_ui_pass_to_main_depth_texture: true,
+        }
+    }
+}
+
 pub trait UiRenderGraphBuilder {
-    fn add_ui_graph(&mut self, resources: &Resources) -> &mut Self;
+    fn add_ui_graph(&mut self, config: &UiRenderGraphConfig, resources: &Resources) -> &mut Self;
 }
 
 impl UiRenderGraphBuilder for RenderGraph {
-    fn add_ui_graph(&mut self, resources: &Resources) -> &mut Self {
+    fn add_ui_graph(&mut self, config: &UiRenderGraphConfig, resources: &Resources) -> &mut Self {
         let mut pipelines = resources.get_mut::<Assets<PipelineDescriptor>>().unwrap();
         let mut shaders = resources.get_mut::<Assets<Shader>>().unwrap();
         let msaa = resources.get::<Msaa>().unwrap();
@@ -123,13 +135,15 @@ impl UiRenderGraphBuilder for RenderGraph {
         )
         .unwrap();
 
-        self.add_slot_edge(
-            base::node::MAIN_DEPTH_TEXTURE,
-            WindowTextureNode::OUT_TEXTURE,
-            node::UI_PASS,
-            "depth",
-        )
-        .unwrap();
+        if config.connect_ui_pass_to_main_depth_texture {
+            self.add_slot_edge(
+                base::node::MAIN_DEPTH_TEXTURE,
+                WindowTextureNode::OUT_TEXTURE,
+                node::UI_PASS,
+                "depth",
+            )
+            .unwrap();
+        }
 
         if msaa.samples > 1 {
             self.add_slot_edge(

From 94d5cc01fbe2b1563276deb700bbe3e15e572e2d Mon Sep 17 00:00:00 2001
From: Jonas Matser <github@jonasmatser.nl>
Date: Mon, 22 Feb 2021 10:16:46 +0100
Subject: [PATCH 2/3] Make config field pub

---
 crates/bevy_ui/src/render/mod.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/crates/bevy_ui/src/render/mod.rs b/crates/bevy_ui/src/render/mod.rs
index f947347bbe715..dc4302bdd00b9 100644
--- a/crates/bevy_ui/src/render/mod.rs
+++ b/crates/bevy_ui/src/render/mod.rs
@@ -78,7 +78,7 @@ pub mod camera {
 }
 
 pub struct UiRenderGraphConfig {
-    connect_ui_pass_to_main_depth_texture: bool,
+    pub connect_ui_pass_to_main_depth_texture: bool,
 }
 
 impl Default for UiRenderGraphConfig {

From d0887e612b82f846b726d9f1884ad640a21d6b68 Mon Sep 17 00:00:00 2001
From: Jonas Matser <github@jonasmatser.nl>
Date: Mon, 22 Feb 2021 10:24:21 +0100
Subject: [PATCH 3/3] Make another field public

---
 crates/bevy_ui/src/lib.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/crates/bevy_ui/src/lib.rs b/crates/bevy_ui/src/lib.rs
index 463976518cb6c..d3c9b4040ea29 100644
--- a/crates/bevy_ui/src/lib.rs
+++ b/crates/bevy_ui/src/lib.rs
@@ -25,7 +25,7 @@ use bevy_render::render_graph::RenderGraph;
 use update::ui_z_system;
 
 pub struct UiPlugin {
-    ui_render_graph_config: Option<UiRenderGraphConfig>,
+    pub ui_render_graph_config: Option<UiRenderGraphConfig>,
 }
 
 impl Default for UiPlugin {