dot()

구문

function dot<K extends `vec${number}<f64>`>(
  a: ReadonlyNode<K>,
  b: NoInfer<ReadonlyNode<K>>,
): Node<'f64'>;
function dot<K extends `vec${number}<i32>`>(
  a: ReadonlyNode<K>,
  b: NoInfer<ReadonlyNode<K>>,
): Node<'i32'>;
function dot<K extends `vec${number}<u32>`>(
  a: ReadonlyNode<K>,
  b: NoInfer<ReadonlyNode<K>>,
): Node<'u32'>;
function dot<K extends `vec${number}<f32>`>(
  a: ReadonlyNode<K>,
  b: NoInfer<ReadonlyNode<K>>,
): Node<'f32'>;

매개변수

a ReadonlyNode<K>

b NoInfer<ReadonlyNode<K>>

반환값

Node<'f64'>

설명

Like length, the return precision follows the operand key: f32 vectors return f32, emulated-double vec${N}<f64> vectors return f64. Both operands share one key, so dot(v2, v3) is a tsc error.

An integer dot returns that integer kind and takes the dotI / dotU id, because GLSL ES 3.00 has no integer dot at all and a WebGL2 driver refuses the call; the ids carry a GLSL column that expands to the multiply-add the spelling is missing. The choice is divergentIntegerId, shared with the "use typeshade" front end.

예제

import { fn, dot, vec3, f32T } from 'typeshade'

const luma = fn('luma', { x: f32T }, ({ x }) => dot(vec3(x, x, x), vec3(0.2, 0.7, 0.1)))

대상별 지원

관련 가이드

• fp64

함께 보기

• length

소스

src/core/ir/node.ts, 1821행, 커밋 c66579bf 기준