Struct vulkano::acceleration_structure::AccelerationStructureInstance

#[repr(C)]
pub struct AccelerationStructureInstance {
    pub transform: TransformMatrix,
    pub instance_custom_index_and_mask: Packed24_8,
    pub instance_shader_binding_table_record_offset_and_flags: Packed24_8,
    pub acceleration_structure_reference: DeviceAddress,
}

Specifies a bottom-level acceleration structure instance when building a top-level structure.

Fields

transform: TransformMatrix

A 3x4 transformation matrix to be applied to the bottom-level acceleration structure.

The first three columns must be a 3x3 invertible matrix.

The default value is a 3x3 identity matrix, with the fourth column filled with zeroes.

instance_custom_index_and_mask: Packed24_8

Low 24 bits: A custom index value to be accessible via the InstanceCustomIndexKHR built-in variable in ray shaders. The default value is 0.

High 8 bits: A visibility mask for the geometry. The instance will not be hit if the cull mask ANDed with this mask is zero. The default value is 0xFF.

instance_shader_binding_table_record_offset_and_flags: Packed24_8

Low 24 bits: An offset used in calculating the binding table index of the hit shader. The default value is 0.

High 8 bits: GeometryInstanceFlags to apply to the instance. The From trait can be used to convert the flags into a u8 value. The default value is empty.

acceleration_structure_reference: DeviceAddress

The device address of the bottom-level acceleration structure in this instance.

The default value is 0 (null).

Trait Implementations

impl Clone for AccelerationStructureInstance

fn clone(&self) -> AccelerationStructureInstance

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for AccelerationStructureInstance

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

Formats the value using the given formatter.

impl Default for AccelerationStructureInstance

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for AccelerationStructureInstance

fn eq(&self, other: &AccelerationStructureInstance) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Zeroable for AccelerationStructureInstance

fn zeroed() -> Self

Calls zeroed.

impl Copy for AccelerationStructureInstance

impl Pod for AccelerationStructureInstance

impl StructuralPartialEq for AccelerationStructureInstance