Struct MaterialManager 

pub struct MaterialManager {
    pub max_frames_not_used: usize,
    /* private fields */
}

Manages compiled GPU materials (shaders), caching them by fragment source.

Equivalent to TextureManager but for materials. The renderer creates and uses this to avoid recompiling shaders every frame.

Also holds a runtime shader storage (name → source) for [ShaderAsset::Stored] shaders. Update stored sources with set_source; the old compiled material is evicted automatically when the source changes.

Fields

max_frames_not_used: usize

How many frames a material can go unused before being evicted.

Implementations

impl MaterialManager

pub fn new() -> Self

pub fn get_or_create(&mut self, config: &ShaderConfig) -> &Material

Get or create a material for the given shader config. The material is cached by fragment source string.

pub fn clean(&mut self)

Evict materials that haven’t been used recently.

pub fn set_source(&mut self, name: &str, fragment: &str)

Store or update a named shader source.

If the source changed compared to the previously stored value, the old compiled material is evicted from the cache so the next render pass recompiles automatically. No-ops if the source is unchanged.

pub fn get_source(&self, name: &str) -> Option<&str>

Look up a stored shader source by name.