mirror of
https://github.com/bevyengine/bevy
synced 2024-12-20 01:53:12 +00:00
1005 lines
38 KiB
Rust
1005 lines
38 KiB
Rust
#[cfg(feature = "meshlet")]
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use crate::meshlet::{
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prepare_material_meshlet_meshes_main_opaque_pass, queue_material_meshlet_meshes,
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InstanceManager,
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};
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use crate::*;
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use bevy_asset::{Asset, AssetId, AssetServer};
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use bevy_core_pipeline::{
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core_3d::{
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AlphaMask3d, Camera3d, Opaque3d, Opaque3dBinKey, ScreenSpaceTransmissionQuality,
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Transmissive3d, Transparent3d,
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},
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prepass::{
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DeferredPrepass, DepthPrepass, MotionVectorPrepass, NormalPrepass, OpaqueNoLightmap3dBinKey,
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},
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tonemapping::{DebandDither, Tonemapping},
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};
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use bevy_derive::{Deref, DerefMut};
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use bevy_ecs::{
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prelude::*,
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system::{lifetimeless::SRes, SystemParamItem},
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};
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use bevy_reflect::std_traits::ReflectDefault;
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use bevy_reflect::Reflect;
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use bevy_render::{
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camera::TemporalJitter,
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extract_instances::{ExtractInstancesPlugin, ExtractedInstances},
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extract_resource::ExtractResource,
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mesh::{MeshVertexBufferLayoutRef, RenderMesh},
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render_asset::{PrepareAssetError, RenderAsset, RenderAssetPlugin, RenderAssets},
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render_phase::*,
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render_resource::*,
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renderer::RenderDevice,
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view::{ExtractedView, Msaa, RenderVisibilityRanges, VisibleEntities, WithMesh},
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};
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use bevy_utils::tracing::error;
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use std::marker::PhantomData;
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use std::sync::atomic::{AtomicU32, Ordering};
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use std::{hash::Hash, num::NonZero};
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use self::{irradiance_volume::IrradianceVolume, prelude::EnvironmentMapLight};
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/// Materials are used alongside [`MaterialPlugin`] and [`MaterialMeshBundle`]
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/// to spawn entities that are rendered with a specific [`Material`] type. They serve as an easy to use high level
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/// way to render [`Mesh`](bevy_render::mesh::Mesh) entities with custom shader logic.
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///
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/// Materials must implement [`AsBindGroup`] to define how data will be transferred to the GPU and bound in shaders.
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/// [`AsBindGroup`] can be derived, which makes generating bindings straightforward. See the [`AsBindGroup`] docs for details.
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///
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/// # Example
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///
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/// Here is a simple Material implementation. The [`AsBindGroup`] derive has many features. To see what else is available,
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/// check out the [`AsBindGroup`] documentation.
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/// ```
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/// # use bevy_pbr::{Material, MaterialMeshBundle};
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/// # use bevy_ecs::prelude::*;
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/// # use bevy_reflect::TypePath;
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/// # use bevy_render::{render_resource::{AsBindGroup, ShaderRef}, texture::Image};
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/// # use bevy_color::LinearRgba;
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/// # use bevy_color::palettes::basic::RED;
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/// # use bevy_asset::{Handle, AssetServer, Assets, Asset};
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///
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/// #[derive(AsBindGroup, Debug, Clone, Asset, TypePath)]
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/// pub struct CustomMaterial {
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/// // Uniform bindings must implement `ShaderType`, which will be used to convert the value to
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/// // its shader-compatible equivalent. Most core math types already implement `ShaderType`.
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/// #[uniform(0)]
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/// color: LinearRgba,
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/// // Images can be bound as textures in shaders. If the Image's sampler is also needed, just
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/// // add the sampler attribute with a different binding index.
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/// #[texture(1)]
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/// #[sampler(2)]
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/// color_texture: Handle<Image>,
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/// }
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///
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/// // All functions on `Material` have default impls. You only need to implement the
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/// // functions that are relevant for your material.
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/// impl Material for CustomMaterial {
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/// fn fragment_shader() -> ShaderRef {
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/// "shaders/custom_material.wgsl".into()
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/// }
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/// }
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///
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/// // Spawn an entity using `CustomMaterial`.
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/// fn setup(mut commands: Commands, mut materials: ResMut<Assets<CustomMaterial>>, asset_server: Res<AssetServer>) {
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/// commands.spawn(MaterialMeshBundle {
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/// material: materials.add(CustomMaterial {
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/// color: RED.into(),
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/// color_texture: asset_server.load("some_image.png"),
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/// }),
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/// ..Default::default()
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/// });
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/// }
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/// ```
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/// In WGSL shaders, the material's binding would look like this:
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///
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/// ```wgsl
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/// @group(2) @binding(0) var<uniform> color: vec4<f32>;
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/// @group(2) @binding(1) var color_texture: texture_2d<f32>;
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/// @group(2) @binding(2) var color_sampler: sampler;
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/// ```
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pub trait Material: Asset + AsBindGroup + Clone + Sized {
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/// Returns this material's vertex shader. If [`ShaderRef::Default`] is returned, the default mesh vertex shader
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/// will be used.
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fn vertex_shader() -> ShaderRef {
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ShaderRef::Default
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}
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/// Returns this material's fragment shader. If [`ShaderRef::Default`] is returned, the default mesh fragment shader
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/// will be used.
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#[allow(unused_variables)]
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fn fragment_shader() -> ShaderRef {
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ShaderRef::Default
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}
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/// Returns this material's [`AlphaMode`]. Defaults to [`AlphaMode::Opaque`].
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#[inline]
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fn alpha_mode(&self) -> AlphaMode {
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AlphaMode::Opaque
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}
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/// Returns if this material should be rendered by the deferred or forward renderer.
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/// for `AlphaMode::Opaque` or `AlphaMode::Mask` materials.
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/// If `OpaqueRendererMethod::Auto`, it will default to what is selected in the `DefaultOpaqueRendererMethod` resource.
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#[inline]
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fn opaque_render_method(&self) -> OpaqueRendererMethod {
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OpaqueRendererMethod::Forward
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}
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#[inline]
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/// Add a bias to the view depth of the mesh which can be used to force a specific render order.
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/// for meshes with similar depth, to avoid z-fighting.
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/// The bias is in depth-texture units so large values may be needed to overcome small depth differences.
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fn depth_bias(&self) -> f32 {
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0.0
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}
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#[inline]
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/// Returns whether the material would like to read from [`ViewTransmissionTexture`](bevy_core_pipeline::core_3d::ViewTransmissionTexture).
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///
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/// This allows taking color output from the [`Opaque3d`] pass as an input, (for screen-space transmission) but requires
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/// rendering to take place in a separate [`Transmissive3d`] pass.
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fn reads_view_transmission_texture(&self) -> bool {
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false
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}
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/// Returns this material's prepass vertex shader. If [`ShaderRef::Default`] is returned, the default prepass vertex shader
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/// will be used.
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///
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/// This is used for the various [prepasses](bevy_core_pipeline::prepass) as well as for generating the depth maps
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/// required for shadow mapping.
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fn prepass_vertex_shader() -> ShaderRef {
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ShaderRef::Default
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}
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/// Returns this material's prepass fragment shader. If [`ShaderRef::Default`] is returned, the default prepass fragment shader
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/// will be used.
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///
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/// This is used for the various [prepasses](bevy_core_pipeline::prepass) as well as for generating the depth maps
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/// required for shadow mapping.
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#[allow(unused_variables)]
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fn prepass_fragment_shader() -> ShaderRef {
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ShaderRef::Default
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}
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/// Returns this material's deferred vertex shader. If [`ShaderRef::Default`] is returned, the default deferred vertex shader
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/// will be used.
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fn deferred_vertex_shader() -> ShaderRef {
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ShaderRef::Default
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}
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/// Returns this material's deferred fragment shader. If [`ShaderRef::Default`] is returned, the default deferred fragment shader
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/// will be used.
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#[allow(unused_variables)]
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fn deferred_fragment_shader() -> ShaderRef {
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ShaderRef::Default
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}
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/// Returns this material's [`crate::meshlet::MeshletMesh`] fragment shader. If [`ShaderRef::Default`] is returned,
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/// the default meshlet mesh fragment shader will be used.
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///
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/// This is part of an experimental feature, and is unnecessary to implement unless you are using `MeshletMesh`'s.
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#[allow(unused_variables)]
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#[cfg(feature = "meshlet")]
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fn meshlet_mesh_fragment_shader() -> ShaderRef {
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ShaderRef::Default
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}
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/// Returns this material's [`crate::meshlet::MeshletMesh`] prepass fragment shader. If [`ShaderRef::Default`] is returned,
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/// the default meshlet mesh prepass fragment shader will be used.
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///
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/// This is part of an experimental feature, and is unnecessary to implement unless you are using `MeshletMesh`'s.
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#[allow(unused_variables)]
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#[cfg(feature = "meshlet")]
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fn meshlet_mesh_prepass_fragment_shader() -> ShaderRef {
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ShaderRef::Default
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}
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/// Returns this material's [`crate::meshlet::MeshletMesh`] deferred fragment shader. If [`ShaderRef::Default`] is returned,
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/// the default meshlet mesh deferred fragment shader will be used.
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///
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/// This is part of an experimental feature, and is unnecessary to implement unless you are using `MeshletMesh`'s.
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#[allow(unused_variables)]
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#[cfg(feature = "meshlet")]
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fn meshlet_mesh_deferred_fragment_shader() -> ShaderRef {
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ShaderRef::Default
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}
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/// Customizes the default [`RenderPipelineDescriptor`] for a specific entity using the entity's
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/// [`MaterialPipelineKey`] and [`MeshVertexBufferLayoutRef`] as input.
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#[allow(unused_variables)]
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#[inline]
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fn specialize(
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pipeline: &MaterialPipeline<Self>,
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descriptor: &mut RenderPipelineDescriptor,
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layout: &MeshVertexBufferLayoutRef,
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key: MaterialPipelineKey<Self>,
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) -> Result<(), SpecializedMeshPipelineError> {
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Ok(())
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}
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}
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/// Adds the necessary ECS resources and render logic to enable rendering entities using the given [`Material`]
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/// asset type.
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pub struct MaterialPlugin<M: Material> {
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/// Controls if the prepass is enabled for the Material.
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/// For more information about what a prepass is, see the [`bevy_core_pipeline::prepass`] docs.
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///
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/// When it is enabled, it will automatically add the [`PrepassPlugin`]
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/// required to make the prepass work on this Material.
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pub prepass_enabled: bool,
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/// Controls if shadows are enabled for the Material.
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pub shadows_enabled: bool,
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pub _marker: PhantomData<M>,
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}
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impl<M: Material> Default for MaterialPlugin<M> {
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fn default() -> Self {
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Self {
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prepass_enabled: true,
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shadows_enabled: true,
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_marker: Default::default(),
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}
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}
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}
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impl<M: Material> Plugin for MaterialPlugin<M>
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where
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M::Data: PartialEq + Eq + Hash + Clone,
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{
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fn build(&self, app: &mut App) {
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app.init_asset::<M>().add_plugins((
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ExtractInstancesPlugin::<AssetId<M>>::extract_visible(),
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RenderAssetPlugin::<PreparedMaterial<M>>::default(),
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));
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if let Some(render_app) = app.get_sub_app_mut(RenderApp) {
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render_app
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.init_resource::<DrawFunctions<Shadow>>()
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.add_render_command::<Shadow, DrawPrepass<M>>()
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.add_render_command::<Transmissive3d, DrawMaterial<M>>()
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.add_render_command::<Transparent3d, DrawMaterial<M>>()
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.add_render_command::<Opaque3d, DrawMaterial<M>>()
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.add_render_command::<AlphaMask3d, DrawMaterial<M>>()
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.init_resource::<SpecializedMeshPipelines<MaterialPipeline<M>>>()
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.add_systems(
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Render,
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queue_material_meshes::<M>
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.in_set(RenderSet::QueueMeshes)
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.after(prepare_assets::<PreparedMaterial<M>>),
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);
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if self.shadows_enabled {
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render_app.add_systems(
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Render,
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queue_shadows::<M>
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.in_set(RenderSet::QueueMeshes)
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.after(prepare_assets::<PreparedMaterial<M>>),
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);
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}
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#[cfg(feature = "meshlet")]
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render_app.add_systems(
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Render,
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queue_material_meshlet_meshes::<M>
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.in_set(RenderSet::QueueMeshes)
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.run_if(resource_exists::<InstanceManager>),
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);
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#[cfg(feature = "meshlet")]
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render_app.add_systems(
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Render,
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prepare_material_meshlet_meshes_main_opaque_pass::<M>
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.in_set(RenderSet::QueueMeshes)
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.after(prepare_assets::<PreparedMaterial<M>>)
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.before(queue_material_meshlet_meshes::<M>)
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.run_if(resource_exists::<InstanceManager>),
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);
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}
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if self.shadows_enabled || self.prepass_enabled {
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// PrepassPipelinePlugin is required for shadow mapping and the optional PrepassPlugin
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app.add_plugins(PrepassPipelinePlugin::<M>::default());
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}
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if self.prepass_enabled {
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app.add_plugins(PrepassPlugin::<M>::default());
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}
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}
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fn finish(&self, app: &mut App) {
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if let Some(render_app) = app.get_sub_app_mut(RenderApp) {
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render_app.init_resource::<MaterialPipeline<M>>();
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}
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}
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}
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/// A key uniquely identifying a specialized [`MaterialPipeline`].
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pub struct MaterialPipelineKey<M: Material> {
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pub mesh_key: MeshPipelineKey,
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pub bind_group_data: M::Data,
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}
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impl<M: Material> Eq for MaterialPipelineKey<M> where M::Data: PartialEq {}
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impl<M: Material> PartialEq for MaterialPipelineKey<M>
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where
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M::Data: PartialEq,
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{
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fn eq(&self, other: &Self) -> bool {
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self.mesh_key == other.mesh_key && self.bind_group_data == other.bind_group_data
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}
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}
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impl<M: Material> Clone for MaterialPipelineKey<M>
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where
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M::Data: Clone,
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{
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fn clone(&self) -> Self {
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Self {
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mesh_key: self.mesh_key,
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bind_group_data: self.bind_group_data.clone(),
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}
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}
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}
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impl<M: Material> Hash for MaterialPipelineKey<M>
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where
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M::Data: Hash,
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{
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fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
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self.mesh_key.hash(state);
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self.bind_group_data.hash(state);
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}
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}
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/// Render pipeline data for a given [`Material`].
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#[derive(Resource)]
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pub struct MaterialPipeline<M: Material> {
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pub mesh_pipeline: MeshPipeline,
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pub material_layout: BindGroupLayout,
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pub vertex_shader: Option<Handle<Shader>>,
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pub fragment_shader: Option<Handle<Shader>>,
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pub marker: PhantomData<M>,
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}
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impl<M: Material> Clone for MaterialPipeline<M> {
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fn clone(&self) -> Self {
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Self {
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mesh_pipeline: self.mesh_pipeline.clone(),
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material_layout: self.material_layout.clone(),
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vertex_shader: self.vertex_shader.clone(),
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fragment_shader: self.fragment_shader.clone(),
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marker: PhantomData,
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}
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}
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}
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impl<M: Material> SpecializedMeshPipeline for MaterialPipeline<M>
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where
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M::Data: PartialEq + Eq + Hash + Clone,
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{
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type Key = MaterialPipelineKey<M>;
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fn specialize(
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&self,
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key: Self::Key,
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layout: &MeshVertexBufferLayoutRef,
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) -> Result<RenderPipelineDescriptor, SpecializedMeshPipelineError> {
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let mut descriptor = self.mesh_pipeline.specialize(key.mesh_key, layout)?;
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if let Some(vertex_shader) = &self.vertex_shader {
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descriptor.vertex.shader = vertex_shader.clone();
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}
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if let Some(fragment_shader) = &self.fragment_shader {
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descriptor.fragment.as_mut().unwrap().shader = fragment_shader.clone();
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}
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descriptor.layout.insert(2, self.material_layout.clone());
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M::specialize(self, &mut descriptor, layout, key)?;
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Ok(descriptor)
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}
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}
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impl<M: Material> FromWorld for MaterialPipeline<M> {
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fn from_world(world: &mut World) -> Self {
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let asset_server = world.resource::<AssetServer>();
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let render_device = world.resource::<RenderDevice>();
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MaterialPipeline {
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mesh_pipeline: world.resource::<MeshPipeline>().clone(),
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material_layout: M::bind_group_layout(render_device),
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vertex_shader: match M::vertex_shader() {
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ShaderRef::Default => None,
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ShaderRef::Handle(handle) => Some(handle),
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ShaderRef::Path(path) => Some(asset_server.load(path)),
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},
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fragment_shader: match M::fragment_shader() {
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ShaderRef::Default => None,
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ShaderRef::Handle(handle) => Some(handle),
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ShaderRef::Path(path) => Some(asset_server.load(path)),
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},
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marker: PhantomData,
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}
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}
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}
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type DrawMaterial<M> = (
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SetItemPipeline,
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SetMeshViewBindGroup<0>,
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SetMeshBindGroup<1>,
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SetMaterialBindGroup<M, 2>,
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DrawMesh,
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);
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/// Sets the bind group for a given [`Material`] at the configured `I` index.
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pub struct SetMaterialBindGroup<M: Material, const I: usize>(PhantomData<M>);
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impl<P: PhaseItem, M: Material, const I: usize> RenderCommand<P> for SetMaterialBindGroup<M, I> {
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type Param = (
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SRes<RenderAssets<PreparedMaterial<M>>>,
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SRes<RenderMaterialInstances<M>>,
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);
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type ViewQuery = ();
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type ItemQuery = ();
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#[inline]
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fn render<'w>(
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item: &P,
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_view: (),
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_item_query: Option<()>,
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(materials, material_instances): SystemParamItem<'w, '_, Self::Param>,
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pass: &mut TrackedRenderPass<'w>,
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) -> RenderCommandResult {
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let materials = materials.into_inner();
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let material_instances = material_instances.into_inner();
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let Some(material_asset_id) = material_instances.get(&item.entity()) else {
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return RenderCommandResult::Skip;
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};
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let Some(material) = materials.get(*material_asset_id) else {
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return RenderCommandResult::Skip;
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};
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pass.set_bind_group(I, &material.bind_group, &[]);
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RenderCommandResult::Success
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}
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}
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pub type RenderMaterialInstances<M> = ExtractedInstances<AssetId<M>>;
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pub const fn alpha_mode_pipeline_key(alpha_mode: AlphaMode, msaa: &Msaa) -> MeshPipelineKey {
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match alpha_mode {
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// Premultiplied and Add share the same pipeline key
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// They're made distinct in the PBR shader, via `premultiply_alpha()`
|
|
AlphaMode::Premultiplied | AlphaMode::Add => MeshPipelineKey::BLEND_PREMULTIPLIED_ALPHA,
|
|
AlphaMode::Blend => MeshPipelineKey::BLEND_ALPHA,
|
|
AlphaMode::Multiply => MeshPipelineKey::BLEND_MULTIPLY,
|
|
AlphaMode::Mask(_) => MeshPipelineKey::MAY_DISCARD,
|
|
AlphaMode::AlphaToCoverage => match *msaa {
|
|
Msaa::Off => MeshPipelineKey::MAY_DISCARD,
|
|
_ => MeshPipelineKey::BLEND_ALPHA_TO_COVERAGE,
|
|
},
|
|
_ => MeshPipelineKey::NONE,
|
|
}
|
|
}
|
|
|
|
pub const fn tonemapping_pipeline_key(tonemapping: Tonemapping) -> MeshPipelineKey {
|
|
match tonemapping {
|
|
Tonemapping::None => MeshPipelineKey::TONEMAP_METHOD_NONE,
|
|
Tonemapping::Reinhard => MeshPipelineKey::TONEMAP_METHOD_REINHARD,
|
|
Tonemapping::ReinhardLuminance => MeshPipelineKey::TONEMAP_METHOD_REINHARD_LUMINANCE,
|
|
Tonemapping::AcesFitted => MeshPipelineKey::TONEMAP_METHOD_ACES_FITTED,
|
|
Tonemapping::AgX => MeshPipelineKey::TONEMAP_METHOD_AGX,
|
|
Tonemapping::SomewhatBoringDisplayTransform => {
|
|
MeshPipelineKey::TONEMAP_METHOD_SOMEWHAT_BORING_DISPLAY_TRANSFORM
|
|
}
|
|
Tonemapping::TonyMcMapface => MeshPipelineKey::TONEMAP_METHOD_TONY_MC_MAPFACE,
|
|
Tonemapping::BlenderFilmic => MeshPipelineKey::TONEMAP_METHOD_BLENDER_FILMIC,
|
|
}
|
|
}
|
|
|
|
pub const fn screen_space_specular_transmission_pipeline_key(
|
|
screen_space_transmissive_blur_quality: ScreenSpaceTransmissionQuality,
|
|
) -> MeshPipelineKey {
|
|
match screen_space_transmissive_blur_quality {
|
|
ScreenSpaceTransmissionQuality::Low => {
|
|
MeshPipelineKey::SCREEN_SPACE_SPECULAR_TRANSMISSION_LOW
|
|
}
|
|
ScreenSpaceTransmissionQuality::Medium => {
|
|
MeshPipelineKey::SCREEN_SPACE_SPECULAR_TRANSMISSION_MEDIUM
|
|
}
|
|
ScreenSpaceTransmissionQuality::High => {
|
|
MeshPipelineKey::SCREEN_SPACE_SPECULAR_TRANSMISSION_HIGH
|
|
}
|
|
ScreenSpaceTransmissionQuality::Ultra => {
|
|
MeshPipelineKey::SCREEN_SPACE_SPECULAR_TRANSMISSION_ULTRA
|
|
}
|
|
}
|
|
}
|
|
|
|
/// For each view, iterates over all the meshes visible from that view and adds
|
|
/// them to [`BinnedRenderPhase`]s or [`SortedRenderPhase`]s as appropriate.
|
|
#[allow(clippy::too_many_arguments)]
|
|
pub fn queue_material_meshes<M: Material>(
|
|
(
|
|
opaque_draw_functions,
|
|
alpha_mask_draw_functions,
|
|
transmissive_draw_functions,
|
|
transparent_draw_functions,
|
|
): (
|
|
Res<DrawFunctions<Opaque3d>>,
|
|
Res<DrawFunctions<AlphaMask3d>>,
|
|
Res<DrawFunctions<Transmissive3d>>,
|
|
Res<DrawFunctions<Transparent3d>>,
|
|
),
|
|
material_pipeline: Res<MaterialPipeline<M>>,
|
|
mut pipelines: ResMut<SpecializedMeshPipelines<MaterialPipeline<M>>>,
|
|
pipeline_cache: Res<PipelineCache>,
|
|
render_meshes: Res<RenderAssets<RenderMesh>>,
|
|
render_materials: Res<RenderAssets<PreparedMaterial<M>>>,
|
|
render_mesh_instances: Res<RenderMeshInstances>,
|
|
render_material_instances: Res<RenderMaterialInstances<M>>,
|
|
render_lightmaps: Res<RenderLightmaps>,
|
|
render_visibility_ranges: Res<RenderVisibilityRanges>,
|
|
mut opaque_render_phases: ResMut<ViewBinnedRenderPhases<Opaque3d>>,
|
|
mut alpha_mask_render_phases: ResMut<ViewBinnedRenderPhases<AlphaMask3d>>,
|
|
mut transmissive_render_phases: ResMut<ViewSortedRenderPhases<Transmissive3d>>,
|
|
mut transparent_render_phases: ResMut<ViewSortedRenderPhases<Transparent3d>>,
|
|
views: Query<(
|
|
Entity,
|
|
&ExtractedView,
|
|
&VisibleEntities,
|
|
&Msaa,
|
|
Option<&Tonemapping>,
|
|
Option<&DebandDither>,
|
|
Option<&ShadowFilteringMethod>,
|
|
Has<ScreenSpaceAmbientOcclusion>,
|
|
(
|
|
Has<NormalPrepass>,
|
|
Has<DepthPrepass>,
|
|
Has<MotionVectorPrepass>,
|
|
Has<DeferredPrepass>,
|
|
),
|
|
Option<&Camera3d>,
|
|
Has<TemporalJitter>,
|
|
Option<&Projection>,
|
|
(
|
|
Has<RenderViewLightProbes<EnvironmentMapLight>>,
|
|
Has<RenderViewLightProbes<IrradianceVolume>>,
|
|
),
|
|
)>,
|
|
) where
|
|
M::Data: PartialEq + Eq + Hash + Clone,
|
|
{
|
|
for (
|
|
view_entity,
|
|
view,
|
|
visible_entities,
|
|
msaa,
|
|
tonemapping,
|
|
dither,
|
|
shadow_filter_method,
|
|
ssao,
|
|
(normal_prepass, depth_prepass, motion_vector_prepass, deferred_prepass),
|
|
camera_3d,
|
|
temporal_jitter,
|
|
projection,
|
|
(has_environment_maps, has_irradiance_volumes),
|
|
) in &views
|
|
{
|
|
let (
|
|
Some(opaque_phase),
|
|
Some(alpha_mask_phase),
|
|
Some(transmissive_phase),
|
|
Some(transparent_phase),
|
|
) = (
|
|
opaque_render_phases.get_mut(&view_entity),
|
|
alpha_mask_render_phases.get_mut(&view_entity),
|
|
transmissive_render_phases.get_mut(&view_entity),
|
|
transparent_render_phases.get_mut(&view_entity),
|
|
)
|
|
else {
|
|
continue;
|
|
};
|
|
|
|
let draw_opaque_pbr = opaque_draw_functions.read().id::<DrawMaterial<M>>();
|
|
let draw_alpha_mask_pbr = alpha_mask_draw_functions.read().id::<DrawMaterial<M>>();
|
|
let draw_transmissive_pbr = transmissive_draw_functions.read().id::<DrawMaterial<M>>();
|
|
let draw_transparent_pbr = transparent_draw_functions.read().id::<DrawMaterial<M>>();
|
|
|
|
let mut view_key = MeshPipelineKey::from_msaa_samples(msaa.samples())
|
|
| MeshPipelineKey::from_hdr(view.hdr);
|
|
|
|
if normal_prepass {
|
|
view_key |= MeshPipelineKey::NORMAL_PREPASS;
|
|
}
|
|
|
|
if depth_prepass {
|
|
view_key |= MeshPipelineKey::DEPTH_PREPASS;
|
|
}
|
|
|
|
if motion_vector_prepass {
|
|
view_key |= MeshPipelineKey::MOTION_VECTOR_PREPASS;
|
|
}
|
|
|
|
if deferred_prepass {
|
|
view_key |= MeshPipelineKey::DEFERRED_PREPASS;
|
|
}
|
|
|
|
if temporal_jitter {
|
|
view_key |= MeshPipelineKey::TEMPORAL_JITTER;
|
|
}
|
|
|
|
if has_environment_maps {
|
|
view_key |= MeshPipelineKey::ENVIRONMENT_MAP;
|
|
}
|
|
|
|
if has_irradiance_volumes {
|
|
view_key |= MeshPipelineKey::IRRADIANCE_VOLUME;
|
|
}
|
|
|
|
if let Some(projection) = projection {
|
|
view_key |= match projection {
|
|
Projection::Perspective(_) => MeshPipelineKey::VIEW_PROJECTION_PERSPECTIVE,
|
|
Projection::Orthographic(_) => MeshPipelineKey::VIEW_PROJECTION_ORTHOGRAPHIC,
|
|
};
|
|
}
|
|
|
|
match shadow_filter_method.unwrap_or(&ShadowFilteringMethod::default()) {
|
|
ShadowFilteringMethod::Hardware2x2 => {
|
|
view_key |= MeshPipelineKey::SHADOW_FILTER_METHOD_HARDWARE_2X2;
|
|
}
|
|
ShadowFilteringMethod::Gaussian => {
|
|
view_key |= MeshPipelineKey::SHADOW_FILTER_METHOD_GAUSSIAN;
|
|
}
|
|
ShadowFilteringMethod::Temporal => {
|
|
view_key |= MeshPipelineKey::SHADOW_FILTER_METHOD_TEMPORAL;
|
|
}
|
|
}
|
|
|
|
if !view.hdr {
|
|
if let Some(tonemapping) = tonemapping {
|
|
view_key |= MeshPipelineKey::TONEMAP_IN_SHADER;
|
|
view_key |= tonemapping_pipeline_key(*tonemapping);
|
|
}
|
|
if let Some(DebandDither::Enabled) = dither {
|
|
view_key |= MeshPipelineKey::DEBAND_DITHER;
|
|
}
|
|
}
|
|
if ssao {
|
|
view_key |= MeshPipelineKey::SCREEN_SPACE_AMBIENT_OCCLUSION;
|
|
}
|
|
if let Some(camera_3d) = camera_3d {
|
|
view_key |= screen_space_specular_transmission_pipeline_key(
|
|
camera_3d.screen_space_specular_transmission_quality,
|
|
);
|
|
}
|
|
|
|
let rangefinder = view.rangefinder3d();
|
|
for visible_entity in visible_entities.iter::<WithMesh>() {
|
|
let Some(material_asset_id) = render_material_instances.get(visible_entity) else {
|
|
continue;
|
|
};
|
|
let Some(mesh_instance) = render_mesh_instances.render_mesh_queue_data(*visible_entity)
|
|
else {
|
|
continue;
|
|
};
|
|
let Some(mesh) = render_meshes.get(mesh_instance.mesh_asset_id) else {
|
|
continue;
|
|
};
|
|
let Some(material) = render_materials.get(*material_asset_id) else {
|
|
continue;
|
|
};
|
|
|
|
let mut mesh_pipeline_key_bits = material.properties.mesh_pipeline_key_bits;
|
|
mesh_pipeline_key_bits.insert(alpha_mode_pipeline_key(
|
|
material.properties.alpha_mode,
|
|
msaa,
|
|
));
|
|
let mut mesh_key = view_key
|
|
| MeshPipelineKey::from_bits_retain(mesh.key_bits.bits())
|
|
| mesh_pipeline_key_bits;
|
|
|
|
let lightmap_image = render_lightmaps
|
|
.render_lightmaps
|
|
.get(visible_entity)
|
|
.map(|lightmap| lightmap.image);
|
|
if lightmap_image.is_some() {
|
|
mesh_key |= MeshPipelineKey::LIGHTMAPPED;
|
|
}
|
|
|
|
if render_visibility_ranges.entity_has_crossfading_visibility_ranges(*visible_entity) {
|
|
mesh_key |= MeshPipelineKey::VISIBILITY_RANGE_DITHER;
|
|
}
|
|
|
|
if motion_vector_prepass {
|
|
// If the previous frame have skins or morph targets, note that.
|
|
if mesh_instance
|
|
.flags
|
|
.contains(RenderMeshInstanceFlags::HAS_PREVIOUS_SKIN)
|
|
{
|
|
mesh_key |= MeshPipelineKey::HAS_PREVIOUS_SKIN;
|
|
}
|
|
if mesh_instance
|
|
.flags
|
|
.contains(RenderMeshInstanceFlags::HAS_PREVIOUS_MORPH)
|
|
{
|
|
mesh_key |= MeshPipelineKey::HAS_PREVIOUS_MORPH;
|
|
}
|
|
}
|
|
|
|
let pipeline_id = pipelines.specialize(
|
|
&pipeline_cache,
|
|
&material_pipeline,
|
|
MaterialPipelineKey {
|
|
mesh_key,
|
|
bind_group_data: material.key.clone(),
|
|
},
|
|
&mesh.layout,
|
|
);
|
|
let pipeline_id = match pipeline_id {
|
|
Ok(id) => id,
|
|
Err(err) => {
|
|
error!("{}", err);
|
|
continue;
|
|
}
|
|
};
|
|
|
|
mesh_instance
|
|
.material_bind_group_id
|
|
.set(material.get_bind_group_id());
|
|
|
|
match mesh_key
|
|
.intersection(MeshPipelineKey::BLEND_RESERVED_BITS | MeshPipelineKey::MAY_DISCARD)
|
|
{
|
|
MeshPipelineKey::BLEND_OPAQUE | MeshPipelineKey::BLEND_ALPHA_TO_COVERAGE => {
|
|
if material.properties.reads_view_transmission_texture {
|
|
let distance = rangefinder.distance_translation(&mesh_instance.translation)
|
|
+ material.properties.depth_bias;
|
|
transmissive_phase.add(Transmissive3d {
|
|
entity: *visible_entity,
|
|
draw_function: draw_transmissive_pbr,
|
|
pipeline: pipeline_id,
|
|
distance,
|
|
batch_range: 0..1,
|
|
extra_index: PhaseItemExtraIndex::NONE,
|
|
});
|
|
} else if material.properties.render_method == OpaqueRendererMethod::Forward {
|
|
let bin_key = Opaque3dBinKey {
|
|
draw_function: draw_opaque_pbr,
|
|
pipeline: pipeline_id,
|
|
asset_id: mesh_instance.mesh_asset_id.into(),
|
|
material_bind_group_id: material.get_bind_group_id().0,
|
|
lightmap_image,
|
|
};
|
|
opaque_phase.add(
|
|
bin_key,
|
|
*visible_entity,
|
|
BinnedRenderPhaseType::mesh(mesh_instance.should_batch()),
|
|
);
|
|
}
|
|
}
|
|
// Alpha mask
|
|
MeshPipelineKey::MAY_DISCARD => {
|
|
if material.properties.reads_view_transmission_texture {
|
|
let distance = rangefinder.distance_translation(&mesh_instance.translation)
|
|
+ material.properties.depth_bias;
|
|
transmissive_phase.add(Transmissive3d {
|
|
entity: *visible_entity,
|
|
draw_function: draw_transmissive_pbr,
|
|
pipeline: pipeline_id,
|
|
distance,
|
|
batch_range: 0..1,
|
|
extra_index: PhaseItemExtraIndex::NONE,
|
|
});
|
|
} else if material.properties.render_method == OpaqueRendererMethod::Forward {
|
|
let bin_key = OpaqueNoLightmap3dBinKey {
|
|
draw_function: draw_alpha_mask_pbr,
|
|
pipeline: pipeline_id,
|
|
asset_id: mesh_instance.mesh_asset_id.into(),
|
|
material_bind_group_id: material.get_bind_group_id().0,
|
|
};
|
|
alpha_mask_phase.add(
|
|
bin_key,
|
|
*visible_entity,
|
|
BinnedRenderPhaseType::mesh(mesh_instance.should_batch()),
|
|
);
|
|
}
|
|
}
|
|
_ => {
|
|
let distance = rangefinder.distance_translation(&mesh_instance.translation)
|
|
+ material.properties.depth_bias;
|
|
transparent_phase.add(Transparent3d {
|
|
entity: *visible_entity,
|
|
draw_function: draw_transparent_pbr,
|
|
pipeline: pipeline_id,
|
|
distance,
|
|
batch_range: 0..1,
|
|
extra_index: PhaseItemExtraIndex::NONE,
|
|
});
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/// Default render method used for opaque materials.
|
|
#[derive(Default, Resource, Clone, Debug, ExtractResource, Reflect)]
|
|
#[reflect(Resource, Default, Debug)]
|
|
pub struct DefaultOpaqueRendererMethod(OpaqueRendererMethod);
|
|
|
|
impl DefaultOpaqueRendererMethod {
|
|
pub fn forward() -> Self {
|
|
DefaultOpaqueRendererMethod(OpaqueRendererMethod::Forward)
|
|
}
|
|
|
|
pub fn deferred() -> Self {
|
|
DefaultOpaqueRendererMethod(OpaqueRendererMethod::Deferred)
|
|
}
|
|
|
|
pub fn set_to_forward(&mut self) {
|
|
self.0 = OpaqueRendererMethod::Forward;
|
|
}
|
|
|
|
pub fn set_to_deferred(&mut self) {
|
|
self.0 = OpaqueRendererMethod::Deferred;
|
|
}
|
|
}
|
|
|
|
/// Render method used for opaque materials.
|
|
///
|
|
/// The forward rendering main pass draws each mesh entity and shades it according to its
|
|
/// corresponding material and the lights that affect it. Some render features like Screen Space
|
|
/// Ambient Occlusion require running depth and normal prepasses, that are 'deferred'-like
|
|
/// prepasses over all mesh entities to populate depth and normal textures. This means that when
|
|
/// using render features that require running prepasses, multiple passes over all visible geometry
|
|
/// are required. This can be slow if there is a lot of geometry that cannot be batched into few
|
|
/// draws.
|
|
///
|
|
/// Deferred rendering runs a prepass to gather not only geometric information like depth and
|
|
/// normals, but also all the material properties like base color, emissive color, reflectance,
|
|
/// metalness, etc, and writes them into a deferred 'g-buffer' texture. The deferred main pass is
|
|
/// then a fullscreen pass that reads data from these textures and executes shading. This allows
|
|
/// for one pass over geometry, but is at the cost of not being able to use MSAA, and has heavier
|
|
/// bandwidth usage which can be unsuitable for low end mobile or other bandwidth-constrained devices.
|
|
///
|
|
/// If a material indicates `OpaqueRendererMethod::Auto`, `DefaultOpaqueRendererMethod` will be used.
|
|
#[derive(Default, Clone, Copy, Debug, PartialEq, Reflect)]
|
|
pub enum OpaqueRendererMethod {
|
|
#[default]
|
|
Forward,
|
|
Deferred,
|
|
Auto,
|
|
}
|
|
|
|
/// Common [`Material`] properties, calculated for a specific material instance.
|
|
pub struct MaterialProperties {
|
|
/// Is this material should be rendered by the deferred renderer when.
|
|
/// [`AlphaMode::Opaque`] or [`AlphaMode::Mask`]
|
|
pub render_method: OpaqueRendererMethod,
|
|
/// The [`AlphaMode`] of this material.
|
|
pub alpha_mode: AlphaMode,
|
|
/// The bits in the [`MeshPipelineKey`] for this material.
|
|
///
|
|
/// These are precalculated so that we can just "or" them together in
|
|
/// [`queue_material_meshes`].
|
|
pub mesh_pipeline_key_bits: MeshPipelineKey,
|
|
/// Add a bias to the view depth of the mesh which can be used to force a specific render order
|
|
/// for meshes with equal depth, to avoid z-fighting.
|
|
/// The bias is in depth-texture units so large values may be needed to overcome small depth differences.
|
|
pub depth_bias: f32,
|
|
/// Whether the material would like to read from [`ViewTransmissionTexture`](bevy_core_pipeline::core_3d::ViewTransmissionTexture).
|
|
///
|
|
/// This allows taking color output from the [`Opaque3d`] pass as an input, (for screen-space transmission) but requires
|
|
/// rendering to take place in a separate [`Transmissive3d`] pass.
|
|
pub reads_view_transmission_texture: bool,
|
|
}
|
|
|
|
/// Data prepared for a [`Material`] instance.
|
|
pub struct PreparedMaterial<T: Material> {
|
|
pub bindings: Vec<(u32, OwnedBindingResource)>,
|
|
pub bind_group: BindGroup,
|
|
pub key: T::Data,
|
|
pub properties: MaterialProperties,
|
|
}
|
|
|
|
impl<M: Material> RenderAsset for PreparedMaterial<M> {
|
|
type SourceAsset = M;
|
|
|
|
type Param = (
|
|
SRes<RenderDevice>,
|
|
SRes<MaterialPipeline<M>>,
|
|
SRes<DefaultOpaqueRendererMethod>,
|
|
M::Param,
|
|
);
|
|
|
|
fn prepare_asset(
|
|
material: Self::SourceAsset,
|
|
(render_device, pipeline, default_opaque_render_method, ref mut material_param): &mut SystemParamItem<Self::Param>,
|
|
) -> Result<Self, PrepareAssetError<Self::SourceAsset>> {
|
|
match material.as_bind_group(&pipeline.material_layout, render_device, material_param) {
|
|
Ok(prepared) => {
|
|
let method = match material.opaque_render_method() {
|
|
OpaqueRendererMethod::Forward => OpaqueRendererMethod::Forward,
|
|
OpaqueRendererMethod::Deferred => OpaqueRendererMethod::Deferred,
|
|
OpaqueRendererMethod::Auto => default_opaque_render_method.0,
|
|
};
|
|
let mut mesh_pipeline_key_bits = MeshPipelineKey::empty();
|
|
mesh_pipeline_key_bits.set(
|
|
MeshPipelineKey::READS_VIEW_TRANSMISSION_TEXTURE,
|
|
material.reads_view_transmission_texture(),
|
|
);
|
|
|
|
Ok(PreparedMaterial {
|
|
bindings: prepared.bindings,
|
|
bind_group: prepared.bind_group,
|
|
key: prepared.data,
|
|
properties: MaterialProperties {
|
|
alpha_mode: material.alpha_mode(),
|
|
depth_bias: material.depth_bias(),
|
|
reads_view_transmission_texture: mesh_pipeline_key_bits
|
|
.contains(MeshPipelineKey::READS_VIEW_TRANSMISSION_TEXTURE),
|
|
render_method: method,
|
|
mesh_pipeline_key_bits,
|
|
},
|
|
})
|
|
}
|
|
Err(AsBindGroupError::RetryNextUpdate) => {
|
|
Err(PrepareAssetError::RetryNextUpdate(material))
|
|
}
|
|
Err(other) => Err(PrepareAssetError::AsBindGroupError(other)),
|
|
}
|
|
}
|
|
}
|
|
|
|
#[derive(Component, Clone, Copy, Default, PartialEq, Eq, Deref, DerefMut)]
|
|
pub struct MaterialBindGroupId(pub Option<BindGroupId>);
|
|
|
|
impl MaterialBindGroupId {
|
|
pub fn new(id: BindGroupId) -> Self {
|
|
Self(Some(id))
|
|
}
|
|
}
|
|
|
|
impl From<BindGroup> for MaterialBindGroupId {
|
|
fn from(value: BindGroup) -> Self {
|
|
Self::new(value.id())
|
|
}
|
|
}
|
|
|
|
/// An atomic version of [`MaterialBindGroupId`] that can be read from and written to
|
|
/// safely from multiple threads.
|
|
#[derive(Default)]
|
|
pub struct AtomicMaterialBindGroupId(AtomicU32);
|
|
|
|
impl AtomicMaterialBindGroupId {
|
|
/// Stores a value atomically. Uses [`Ordering::Relaxed`] so there is zero guarantee of ordering
|
|
/// relative to other operations.
|
|
///
|
|
/// See also: [`AtomicU32::store`].
|
|
pub fn set(&self, id: MaterialBindGroupId) {
|
|
let id = if let Some(id) = id.0 {
|
|
NonZero::<u32>::from(id).get()
|
|
} else {
|
|
0
|
|
};
|
|
self.0.store(id, Ordering::Relaxed);
|
|
}
|
|
|
|
/// Loads a value atomically. Uses [`Ordering::Relaxed`] so there is zero guarantee of ordering
|
|
/// relative to other operations.
|
|
///
|
|
/// See also: [`AtomicU32::load`].
|
|
pub fn get(&self) -> MaterialBindGroupId {
|
|
MaterialBindGroupId(
|
|
NonZero::<u32>::new(self.0.load(Ordering::Relaxed)).map(BindGroupId::from),
|
|
)
|
|
}
|
|
}
|
|
|
|
impl<T: Material> PreparedMaterial<T> {
|
|
pub fn get_bind_group_id(&self) -> MaterialBindGroupId {
|
|
MaterialBindGroupId(Some(self.bind_group.id()))
|
|
}
|
|
}
|