Enum ParticleRender 

#[non_exhaustive]
pub enum ParticleRender {
    Sprite {
        texture_id: Option<TextureId>,
        blend: SpriteBlend,
        size_mode: SpriteSizeMode,
        depth_write: bool,
        lit: bool,
        lit_params: SpriteLitParams,
        normal_texture_id: Option<TextureId>,
    },
    Mesh {
        mesh_id: MeshId,
        texture_id: Option<TextureId>,
        blend: SpriteBlend,
        align: ParticleMeshAlign,
    },
}

How a particle system draws its live particles.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Sprite

Draw each particle as a camera-facing billboard sprite.

Fields

texture_id: Option<TextureId>

Optional texture sampled per fragment. None renders solid quads tinted by the particle colour.

blend: SpriteBlend

GPU blend state.

size_mode: SpriteSizeMode

Screen-space or world-space sizing for the per-particle size.

depth_write: bool

Whether the draw writes to depth.

lit: bool

When true, the draw runs through the lit particle sprite pipeline and picks up the scene lighting environment. Default false preserves the emissive billboard look.

lit_params: SpriteLitParams

Lighting parameters used when lit is true.

normal_texture_id: Option<TextureId>

Optional tangent-space normal map for the NormalMap mode.

Mesh

Draw each particle as an instance of an uploaded mesh. The vertex shader composes the per-instance transform from the live particle’s position, velocity, size, and (for Random align) the spawn seed. Unlit; the particle colour multiplies an optional albedo sample.

Fields

mesh_id: MeshId

Mesh handle returned by DeviceResources::upload_mesh_data.

texture_id: Option<TextureId>

Optional albedo texture handle. None renders flat-tinted.

blend: SpriteBlend

GPU blend state.

align: ParticleMeshAlign

How per-particle rotation is derived.

Trait Implementations

impl Clone for ParticleRender

fn clone(&self) -> ParticleRender

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ParticleRender

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for ParticleRender

fn default() -> Self

Returns the “default value” for a type.