Struct SpecialTypes 

pub struct SpecialTypes {
    pub ray_desc: Option<Handle<Type>>,
    pub ray_intersection: Option<Handle<Type>>,
    pub ray_vertex_return: Option<Handle<Type>>,
    pub external_texture_params: Option<Handle<Type>>,
    pub external_texture_transfer_function: Option<Handle<Type>>,
    pub predeclared_types: IndexMap<PredeclaredType, Handle<Type>, BuildHasherDefault<FxHasher>>,
}

Available on crate feature unstable-wgpu-27 only.

Set of special types that can be optionally generated by the frontends.

Fields

ray_desc: Option<Handle<Type>>

Type for RayDesc.

Call Module::generate_ray_desc_type to populate this if needed and return the handle.

ray_intersection: Option<Handle<Type>>

Type for RayIntersection.

Call Module::generate_ray_intersection_type to populate this if needed and return the handle.

ray_vertex_return: Option<Handle<Type>>

Type for RayVertexReturn.

Call Module::generate_vertex_return_type

external_texture_params: Option<Handle<Type>>

Struct containing parameters required by some backends to emit code for ImageClass::External textures.

See wgpu_core::device::resource::ExternalTextureParams for the documentation of each field.

In WGSL, this type would be:

struct NagaExternalTextureParams {         // align size offset
    yuv_conversion_matrix: mat4x4<f32>,    //    16   64      0
    gamut_conversion_matrix: mat3x3<f32>,  //    16   48     64
    src_tf: NagaExternalTextureTransferFn, //     4   16    112
    dst_tf: NagaExternalTextureTransferFn, //     4   16    128
    sample_transform: mat3x2<f32>,         //     8   24    144
    load_transform: mat3x2<f32>,           //     8   24    168
    size: vec2<u32>,                       //     8    8    192
    num_planes: u32,                       //     4    4    200
}                            // whole struct:    16  208

Call Module::generate_external_texture_types to populate this if needed.

external_texture_transfer_function: Option<Handle<Type>>

Struct describing a gamma encoding transfer function. Member of NagaExternalTextureParams, describing how the backend should perform color space conversion when sampling from ImageClass::External textures.

In WGSL, this type would be:

struct NagaExternalTextureTransferFn { // align size offset
    a: f32,                            //     4    4      0
    b: f32,                            //     4    4      4
    g: f32,                            //     4    4      8
    k: f32,                            //     4    4     12
}                         // whole struct:    4   16

Call Module::generate_external_texture_types to populate this if needed.

predeclared_types: IndexMap<PredeclaredType, Handle<Type>, BuildHasherDefault<FxHasher>>

Types for predeclared wgsl types instantiated on demand.

Call Module::generate_predeclared_type to populate this if needed and return the handle.

Trait Implementations

impl Clone for SpecialTypes

fn clone(&self) -> SpecialTypes

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SpecialTypes

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

Formats the value using the given formatter.

impl Default for SpecialTypes

fn default() -> SpecialTypes

Returns the “default value” for a type.