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Explain usage of prepass shaders in docs for Material trait #9025

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Oct 16, 2023
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Explain usage of prepass shaders in docs for Material trait #9025

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6 changes: 6 additions & 0 deletions crates/bevy_pbr/src/material.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -136,12 +136,18 @@ pub trait Material: AsBindGroup + Send + Sync + Clone + TypeUuid + TypePath + Si

/// Returns this material's prepass vertex shader. If [`ShaderRef::Default`] is returned, the default prepass vertex shader
/// will be used.
///
/// This is used for the various [prepasses](bevy_core_pipeline::prepass) as well as for generating the depth maps
/// required for shadow mapping.
fn prepass_vertex_shader() -> ShaderRef {
ShaderRef::Default
}

/// Returns this material's prepass fragment shader. If [`ShaderRef::Default`] is returned, the default prepass fragment shader
/// will be used.
///
/// This is used for the various [prepasses](bevy_core_pipeline::prepass) as well as for generating the depth maps
/// required for shadow mapping.
#[allow(unused_variables)]
fn prepass_fragment_shader() -> ShaderRef {
ShaderRef::Default
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