[wgsl-struct-buffer] 一个给WGSL's Struct提供TS/JS侧BufferView的小工具

https://github.com/deepkolos/wgsl-struct-buffer

一个给WGSL's Struct提供BufferView的小工具, 方便 ComputeShader 中复杂数据结构表示和编辑

• 支持 f16(虽然还没有浏览器支持 shader-f16 扩展)
• 支持 Struct/Array 嵌套,
• 支持 ArrayRumtimeSized (需要位于Struct末尾, 且只有一个)
• TS 类型友好, 支持类型检查+提示

type PrimitiveNumber = 'f16' | 'f32' | 'u32' | 'i32';
type PrimitiveVector = `${'vec2' | 'vec3' | 'vec4'}${'f' | 'h' | 'u' | 'i'}`;
type PrimitiveMatrix = `${'mat3x3' | 'mat4x4'}${'f' | 'h'}`;
type PrimitiveTypedArray = PrimitiveVector | PrimitiveMatrix;
type Primitive = PrimitiveNumber | PrimitiveTypedArray;
type Array = [struct: Struct, length: number, runtimeSized?: boolean];
type Struct = { [k: string]: Primitive | Array | Struct };

import { wgsl } from 'wgsl-struct-buffer';

const { view, buffer, struct } = new wgsl.StructBuffer({
  ambient: 'vec3f', // vec{2,3,4}{f,h,u,i}
  lightCount: 'u32', // f32, f16, u32, i32
  lights: [
    {
      position: 'vec3f',
      range: 'f32',
      color: 'vec3f',
      intensity: 'f32',
    },
    4,
  ],
});
view.ambient.set([0, 0, 0]);
view.lightCount = 4;
view.lights.forEach(light => {
  light.position.set([1, 2, 3]);
  light.color.set([1, 1, 1]);
  light.range = 10;
  light.intensity = 0.8;
});
console.log(buffer);
console.log(wgsl.stringifyStruct('LightInfo', struct));
/** output
struct LightInfo_lights {
  position: vec3f,
  range: f32,
  color: vec3f,
  intensity: f32,
};
struct LightInfo {
  ambient: vec3f,
  lightCount: u32,
  lights: array<LightInfo_lights, 4>,
};
*/