Struct spirv_std::ray_tracing::AccelerationStructure

#[repr(C)]
pub struct AccelerationStructure { /* private fields */ }

An acceleration structure type which is an opaque reference to an acceleration structure handle as defined in the client API specification.

Implementations

impl AccelerationStructure

pub unsafe fn from_u64(id: u64) -> AccelerationStructure

Converts a 64-bit integer into an AccelerationStructure.

Safety

The 64-bit integer must point to a valid acceleration structure.

pub unsafe fn from_vec(id: impl Vector<u32, 2>) -> AccelerationStructure

Converts a vector of two 32 bit integers into an AccelerationStructure.

Safety

The combination must point to a valid acceleration structure.

pub unsafe fn trace_ray<T>( &self, ray_flags: RayFlags, cull_mask: i32, sbt_offset: i32, sbt_stride: i32, miss_index: i32, ray_origin: impl Vector<f32, 3>, ray_tmin: f32, ray_direction: impl Vector<f32, 3>, ray_tmax: f32, payload: &mut T )

Trace a ray into the acceleration structure.

• structure is the descriptor for the acceleration structure to trace into.

• ray_flags contains one or more of the Ray Flag values.

• cull_mask is the mask to test against the instance mask. Only the 8 least-significant bits of are used by this instruction - other bits are ignored.

• sbt_offset and sbt_stride control indexing into the SBT (Shader Binding Table) for hit shaders called from this trace. Only the 4 least-significant bits of sbt_offset and sbt_stride are used by this instruction - other bits are ignored.

• miss_index is the index of the miss shader to be called from this trace call. Only the 16 least-significant bits are used by this instruction - other bits are ignored.

• ray_origin, ray_tmin, ray_direction, and ray_tmax control the basic parameters of the ray to be traced.

• payload is a pointer to the ray payload structure to use for this trace. payload must have a storage class of ray_payload or incoming_ray_payload.

This instruction is allowed only in ray_generation, closest_hit and miss execution models.

This instruction is a shader call instruction which may invoke shaders with the intersection, any_hit, closest_hit, and miss execution models.

Trait Implementations

impl Clone for AccelerationStructure

fn clone(&self) -> AccelerationStructure

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for AccelerationStructure