Struct Constant 

pub struct Constant {
    pub word: usize,
    pub name: String,
    pub register_set: u16,
    pub register: u16,
    pub count: u16,
    pub reserved: u16,
    pub ty: Type,
    pub default: Option<Vec<u8>>,
}

A named allocation, including the original type even when optimization shortened its register range.

Fields

word: usize

The word of the program that the constant’s record (D3DXSHADER_CONSTANTINFO) starts in.

name: String

The constant’s name, from the NUL-terminated UTF-8 string its record points at.

register_set: u16

D3DXREGISTER_SET: BOOL=0, INT4=1, FLOAT4=2, SAMPLER=3.

register: u16

First register of the allocation (u16 at offset 6 of the constant record), in the bank register_set names.

count: u16

Registers allocated (u16 at offset 8). Reading refuses 0; how many registers a bank has is the device’s and the version’s, which reading does not check.

reserved: u16

Compiler-reserved word of D3DXSHADER_CONSTANTINFO. Compilers write nonzero values; it is retained verbatim and does not change the explicit register allocation.

ty: Type

The declared type; it can be larger than count registers when the compiler shortened the allocation.

default: Option<Vec<u8>>

Raw register defaults (BOOL rows are 4 bytes, other numeric rows 16); no defaults on samplers.

Trait Implementations

impl Clone for Constant

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Constant

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

Formats the value using the given formatter.

impl Eq for Constant

impl PartialEq for Constant

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Constant