Temporal Antialiasing (TAA)

Cargo.toml

@@ -13,7 +13,11 @@ repository = "https://github.com/bevyengine/bevy"
 rust-version = "1.67.0"
 
 [workspace]
-exclude = ["benches", "crates/bevy_ecs_compile_fail_tests", "crates/bevy_reflect_compile_fail_tests"]
+exclude = [
+  "benches",
+  "crates/bevy_ecs_compile_fail_tests",
+  "crates/bevy_reflect_compile_fail_tests",
+]
 members = [
   "crates/*",
   "examples/android",
@@ -296,6 +300,16 @@ description = "A scene showcasing the built-in 3D shapes"
 category = "3D Rendering"
 wasm = true
 
+[[example]]
+name = "anti_aliasing"
+path = "examples/3d/anti_aliasing.rs"
+
+[package.metadata.example.anti_aliasing]
+name = "Anti Aliasing"
+description = "Compares different anti aliasing methods"
+category = "3D Rendering"
+wasm = false
+
 [[example]]
 name = "atmospheric_fog"
 path = "examples/3d/atmospheric_fog.rs"
@@ -376,26 +390,6 @@ description = "Loads and renders a glTF file as a scene"
 category = "3D Rendering"
 wasm = true
 
-[[example]]
-name = "fxaa"
-path = "examples/3d/fxaa.rs"
-
-[package.metadata.example.fxaa]
-name = "FXAA"
-description = "Compares MSAA (Multi-Sample Anti-Aliasing) and FXAA (Fast Approximate Anti-Aliasing)"
-category = "3D Rendering"
-wasm = true
-
-[[example]]
-name = "msaa"
-path = "examples/3d/msaa.rs"
-
-[package.metadata.example.msaa]
-name = "MSAA"
-description = "Configures MSAA (Multi-Sample Anti-Aliasing) for smoother edges"
-category = "3D Rendering"
-wasm = true
-
 [[example]]
 name = "orthographic"
 path = "examples/3d/orthographic.rs"
@@ -1259,7 +1253,6 @@ description = "A shader that uses the depth texture generated in a prepass"
 category = "Shaders"
 wasm = false
 
-
 [[example]]
 name = "shader_material_screenspace_texture"
 path = "examples/shader/shader_material_screenspace_texture.rs"

crates/bevy_core_pipeline/Cargo.toml

@@ -20,6 +20,7 @@ webgl = []
 # bevy
 bevy_app = { path = "../bevy_app", version = "0.9.0" }
 bevy_asset = { path = "../bevy_asset", version = "0.9.0" }
+bevy_core = { path = "../bevy_core", version = "0.9.0" }
 bevy_derive = { path = "../bevy_derive", version = "0.9.0" }
 bevy_ecs = { path = "../bevy_ecs", version = "0.9.0" }
 bevy_reflect = { path = "../bevy_reflect", version = "0.9.0" }

crates/bevy_core_pipeline/src/lib.rs

@@ -5,6 +5,7 @@ pub mod core_3d;
 pub mod fullscreen_vertex_shader;
 pub mod fxaa;
 pub mod prepass;
+pub mod taa;
 pub mod tonemapping;
 pub mod upscaling;
 

crates/bevy_core_pipeline/src/prepass/mod.rs

@@ -1,4 +1,4 @@
-//! Run a prepass before the main pass to generate depth and/or normals texture, sometimes called a thin g-buffer.
+//! Run a prepass before the main pass to generate depth, normals, and/or velocity texture, sometimes called a thin g-buffer.
 //! These textures are useful for various screen-space effects and reducing overdraw in the main pass.
 //!
 //! The prepass only runs for opaque meshes or meshes with an alpha mask. Transparent meshes are ignored.
@@ -7,6 +7,7 @@
 //!
 //! [`DepthPrepass`]
 //! [`NormalPrepass`]
+//! [`VelocityPrepass`]
 //!
 //! The textures are automatically added to the default mesh view bindings. You can also get the raw textures
 //! by querying the [`ViewPrepassTextures`] component on any camera with a prepass component.
@@ -15,9 +16,9 @@
 //! to a separate texture unless the [`DepthPrepass`] is activated. This means that if any prepass component is present
 //! it will always create a depth buffer that will be used by the main pass.
 //!
-//! When using the default mesh view bindings you should be able to use `prepass_depth()`
-//! and `prepass_normal()` to load the related textures. These functions are defined in `bevy_pbr::prepass_utils`.
-//! See the `shader_prepass` example that shows how to use it.
+//! When using the default mesh view bindings you should be able to use `prepass_depth()`,
+//! `prepass_normal()`, and `prepass_velocity()` to load the related textures.
+//! These functions are defined in `bevy_pbr::prepass_utils`. See the `shader_prepass` example that shows how to use them.
 //!
 //! The prepass runs for each `Material`. You can control if the prepass should run per-material by setting the `prepass_enabled`
 //! flag on the `MaterialPlugin`.
@@ -37,6 +38,7 @@ use bevy_utils::FloatOrd;
 
 pub const DEPTH_PREPASS_FORMAT: TextureFormat = TextureFormat::Depth32Float;
 pub const NORMAL_PREPASS_FORMAT: TextureFormat = TextureFormat::Rgb10a2Unorm;
+pub const VELOCITY_PREPASS_FORMAT: TextureFormat = TextureFormat::Rg32Float;
 
 /// If added to a [`crate::prelude::Camera3d`] then depth values will be copied to a separate texture available to the main pass.
 #[derive(Component, Default, Reflect)]
@@ -47,6 +49,10 @@ pub struct DepthPrepass;
 #[derive(Component, Default, Reflect)]
 pub struct NormalPrepass;
 
+/// If added to a [`crate::prelude::Camera3d`] then screen space velocities will be copied to a separate texture available to the main pass.
+#[derive(Component, Default, Reflect)]
+pub struct VelocityPrepass;
+
 /// Textures that are written to by the prepass.
 ///
 /// This component will only be present if any of the relevant prepass components are also present.
@@ -58,6 +64,9 @@ pub struct ViewPrepassTextures {
     /// The normals texture generated by the prepass.
     /// Exists only if [`NormalPrepass`] is added to the `ViewTarget`
     pub normal: Option<CachedTexture>,
+    /// The velocities texture generated by the prepass.
+    /// Exists only if [`VelocityPrepass`] is added to the `ViewTarget`
+    pub velocity: Option<CachedTexture>,
     /// The size of the textures.
     pub size: Extent3d,
 }

crates/bevy_core_pipeline/src/prepass/node.rs

@@ -84,6 +84,16 @@ impl Node for PrepassNode {
                 },
             }));
         }
+        if let Some(view_velocities_texture) = &view_prepass_textures.velocity {
+            color_attachments.push(Some(RenderPassColorAttachment {
+                view: &view_velocities_texture.default_view,
+                resolve_target: None,
+                ops: Operations {
+                    load: LoadOp::Clear(Color::rgb_linear(1.0, 1.0, 0.0).into()),
+                    store: true,
+                },
+            }));
+        }
 
         {
             // Set up the pass descriptor with the depth attachment and optional color attachments