pebble-engine 0.9.1

A modular, ECS-style graphics/app framework for Rust.
Documentation 
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#[derive(Clone, Copy, PartialEq, Eq, Hash)]
pub enum SamplerKind {
    LinearRepeat,
    LinearClamp,
    /// Like `LinearClamp`, but clamped to mip 0 only (`lod_min_clamp`/
    /// `lod_max_clamp` both 0.0). Use this when you need to force sampling
    /// the base level regardless of how many mips the texture actually
    /// has — e.g. an environment-map capture pass where blending across
    /// mips would introduce blur you don't want in the baked result.
    LinearClampNoMip,
    Nearest,
}

impl SamplerKind {
    /// Pure conversion to a wgpu descriptor. You still call
    /// `device.create_sampler(&kind.descriptor())` yourself, in your own
    /// `LazyResource::construct` — this only fixes the handful of
    /// address-mode/filter combinations so you don't re-derive them.
    pub fn descriptor(&self) -> wgpu::SamplerDescriptor<'static> {
        match self {
            SamplerKind::LinearRepeat => wgpu::SamplerDescriptor {
                address_mode_u: wgpu::AddressMode::Repeat,
                address_mode_v: wgpu::AddressMode::Repeat,
                address_mode_w: wgpu::AddressMode::Repeat,
                mag_filter: wgpu::FilterMode::Linear,
                min_filter: wgpu::FilterMode::Linear,
                mipmap_filter: wgpu::MipmapFilterMode::Linear,
                ..Default::default()
            },
            SamplerKind::LinearClamp => wgpu::SamplerDescriptor {
                address_mode_u: wgpu::AddressMode::ClampToEdge,
                address_mode_v: wgpu::AddressMode::ClampToEdge,
                address_mode_w: wgpu::AddressMode::ClampToEdge,
                mag_filter: wgpu::FilterMode::Linear,
                min_filter: wgpu::FilterMode::Linear,
                mipmap_filter: wgpu::MipmapFilterMode::Linear,
                ..Default::default()
            },
            SamplerKind::LinearClampNoMip => wgpu::SamplerDescriptor {
                address_mode_u: wgpu::AddressMode::ClampToEdge,
                address_mode_v: wgpu::AddressMode::ClampToEdge,
                address_mode_w: wgpu::AddressMode::ClampToEdge,
                mag_filter: wgpu::FilterMode::Linear,
                min_filter: wgpu::FilterMode::Linear,
                mipmap_filter: wgpu::MipmapFilterMode::Linear,
                lod_min_clamp: 0.0,
                lod_max_clamp: 0.0,
                ..Default::default()
            },
            SamplerKind::Nearest => wgpu::SamplerDescriptor {
                mag_filter: wgpu::FilterMode::Nearest,
                min_filter: wgpu::FilterMode::Nearest,
                mipmap_filter: wgpu::MipmapFilterMode::Linear,
                ..Default::default()
            },
        }
    }
}