Enum gfx_core::Primitive

#[repr(u8)]
pub enum Primitive {
    PointList,
    LineList,
    LineStrip,
    TriangleList,
    TriangleStrip,
    LineListAdjacency,
    LineStripAdjacency,
    TriangleListAdjacency,
    TriangleStripAdjacency,
    PatchList(PatchSize),
}

Describes what geometric primitives are created from vertex data.

Variants

PointList

Each vertex represents a single point.

LineList

Each pair of vertices represent a single line segment. For example, with [a, b, c, d, e], a and b form a line, c and d form a line, and e is discarded.

LineStrip

Every two consecutive vertices represent a single line segment. Visually forms a "path" of lines, as they are all connected. For example, with [a, b, c], a and b form a line line, and b and c form a line.

TriangleList

Each triplet of vertices represent a single triangle. For example, with [a, b, c, d, e], a, b, and c form a triangle, d and e are discarded.

TriangleStrip

Every three consecutive vertices represent a single triangle. For example, with [a, b, c, d], a, b, and c form a triangle, and b, c, and d form a triangle.

LineListAdjacency

Each quadtruplet of vertices represent a single line segment with adjacency information. For example, with [a, b, c, d], b and c form a line, and a and d are the adjacent vertices.

LineStripAdjacency

Every four consecutive vertices represent a single line segment with adjacency information. For example, with [a, b, c, d, e], [a, b, c, d] form a line segment with adjacency, and [b, c, d, e] form a line segment with adjacency.

TriangleListAdjacency

Each sextuplet of vertices represent a single traingle with adjacency information. For example, with [a, b, c, d, e, f], a, c, and e form a traingle, and b, d, and f are the adjacent vertices, where b is adjacent to the edge formed by a and c, d is adjacent to the edge c and e, and f is adjacent to the edge e and a.

TriangleStripAdjacency

Every even-numbered vertex (every other starting from the first) represents an additional vertex for the triangle strip, while odd-numbered vertices (every other starting from the second) represent adjacent vertices. For example, with [a, b, c, d, e, f, g, h], [a, c, e, g] form a triangle strip, and [b, d, f, h] are the adjacent vertices, where b, d, and f are adjacent to the first triangle in the strip, and d, f, and h are adjacent to the second.

PatchList(PatchSize)

Patch list, used with shaders capable of producing primitives on their own (tessellation)

Trait Implementations

impl Clone for Primitive

fn clone(&self) -> Primitive

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for Primitive

impl Debug for Primitive

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Eq for Primitive

impl Hash for Primitive

fn hash<__H: Hasher>(&self, __arg_0: &mut __H)

Feeds this value into the given [Hasher].

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given [Hasher].

impl PartialEq for Primitive

fn eq(&self, __arg_0: &Primitive) -> bool

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

fn ne(&self, __arg_0: &Primitive) -> bool

This method tests for !=.