Merge pull request #246 from StarArawn/shader-with-opacity

Shader with opacity

examples/custom_shader.rs

@@ -28,40 +28,24 @@ fn startup(
 
     let my_material = MyUIMaterial {};
     let my_material_handle = materials.add(my_material);
-    let my_material_handle1 = my_material_handle.clone();
-    let my_material_handle2 = my_material_handle.clone();
 
     let mut widget_context = KayakRootContext::new(camera_entity);
     widget_context.add_plugin(KayakWidgetsContextPlugin);
     let parent_id = None;
     rsx! {
         <KayakAppBundle>
-            <TextWidgetBundle
-                styles={KStyle {
-                    position_type: KPositionType::SelfDirected.into(),
-                    material: MaterialHandle::new(move |commands, entity| {
-                        commands.entity(entity).insert(my_material_handle1.clone_weak());
-                    }).into(),
-                    ..Default::default()
-                }}
-                text={TextProps {
-                    content: "Hello Shader!".into(),
-                    size: 20.0,
-                    ..Default::default()
-                }}
-            />
             <TextWidgetBundle
                 styles={KStyle {
                     position_type: KPositionType::SelfDirected.into(),
                     left: Units::Pixels(20.0).into(),
                     top: Units::Pixels(5.0).into(),
                     material: MaterialHandle::new(move |commands, entity| {
-                        commands.entity(entity).insert(my_material_handle2.clone_weak());
+                        commands.entity(entity).insert(my_material_handle.clone_weak());
                     }).into(),
                     ..Default::default()
                 }}
                 text={TextProps {
-                    content: "Hello World!".into(),
+                    content: "Hello Shader!".into(),
                     size: 20.0,
                     ..Default::default()
                 }}

examples/modal.rs

-use bevy::prelude::*;
+use bevy::{prelude::*, reflect::TypeUuid, render::render_resource::AsBindGroup};
 use kayak_ui::prelude::{widgets::*, *};
 
+#[derive(AsBindGroup, TypeUuid, Debug, Clone)]
+#[uuid = "94c4e6f9-6f10-422c-85ec-6d582d471afc"]
+pub struct MyUIMaterial {}
+impl MaterialUI for MyUIMaterial {
+    fn fragment_shader() -> bevy::render::render_resource::ShaderRef {
+        "rainbow_shader.wgsl".into()
+    }
+}
+
 #[derive(Component, Default, PartialEq, Clone)]
 struct MyWidget;
 
@@ -33,9 +42,12 @@ fn my_widget_render(
     widget_context: Res<KayakWidgetContext>,
     mut commands: Commands,
     query: Query<&MyWidgetState>,
+    mut materials: ResMut<Assets<MyUIMaterial>>,
 ) -> bool {
     let state_entity = widget_context.use_state(&mut commands, entity, MyWidgetState::default());
     if let Ok(state) = query.get(state_entity) {
+        let my_material = MyUIMaterial {};
+        let my_material_handle = materials.add(my_material);
         let parent_id = Some(entity);
         rsx! {
             <ElementBundle>
@@ -76,8 +88,21 @@ fn my_widget_render(
                         ..Default::default()
                     }}
                 >
+                    <TextWidgetBundle
+                        styles={KStyle {
+                            material: MaterialHandle::new(move |commands, entity| {
+                                commands.entity(entity).insert(my_material_handle.clone_weak());
+                            }).into(),
+                            ..Default::default()
+                        }}
+                        text={TextProps {
+                            content: "Hello Modal!".into(),
+                            size: 20.0,
+                            ..Default::default()
+                        }}
+                    />
                     <KButtonBundle
-                        button={KButton { text: "Hide Window".into() }}
+                        button={KButton { text: "Hide Modal".into() }}
                         on_event={OnEvent::new(
                             move |In(_entity): In<Entity>,
                             mut event: ResMut<KEvent>,
@@ -135,6 +160,7 @@ fn main() {
         .add_plugins(DefaultPlugins)
         .add_plugin(KayakContextPlugin)
         .add_plugin(KayakWidgets)
+        .add_plugin(MaterialUIPlugin::<MyUIMaterial>::default())
         .add_startup_system(startup)
         .run()
 }