Enum InputSource 

pub enum InputSource {
    Color0,
    TexCoord(u8),
    Other(u8),
}

The interpolant an input operand reads, from its 4-bit input index (SourceKind::Input).

On the programs of Tony Hawk’s SHRED (3,267 distinct fragment programs) the indices read are 1 (9 programs), 4 to 11 and 13. Index 4 + k is texture coordinate set k: the program header’s tex_coords_input_mask has bit k set exactly when index 4 + k is read, in all 3,267 programs for k 0 to 7 and 9 (k 8 is never read and its bit is never set). Index 1 is the first colour: the header’s attribute_input_mask has bits 0 and 2 set in the nine programs that read it. Indices 0, 2, 3, 12 and 14 are never read there: InputSource::TexCoord names 12 by the same rule, the other four are left as InputSource::Other.

Variants

Color0

Input index 1, the first colour.

TexCoord(u8)

Input index 4 + k, texture coordinate set k (0 to 9).

Other(u8)

An index that is neither (0, 2, 3, 14, 15 and the 4-bit values nothing names).

Implementations

impl InputSource

pub fn from_index(index: u8) -> Self

The interpolant input index index (the 4-bit field of the instruction) reads.

pub fn index(self) -> u8

The input index of this interpolant: the inverse of InputSource::from_index.

Trait Implementations

impl Clone for InputSource

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for InputSource

impl Debug for InputSource

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

Formats the value using the given formatter.

impl Eq for InputSource

impl PartialEq for InputSource

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for InputSource