ShaderChunks.ts

import { RenderMaterialShadersType } from '../../types/Materials'
import get_output_position from './chunks/get_output_position.wgsl'
import get_uv_cover from './chunks/get_uv_cover.wgsl'
import get_vertex_to_uv_coords from './chunks/get_vertex_to_uv_coords.wgsl'

/** Defines {@link ShaderChunks} object structure */
export type ShaderChunks = Record<RenderMaterialShadersType, Record<string, string>>
/** Defines {@link ProjectedShaderChunks} object structure */
export type ProjectedShaderChunks = Record<RenderMaterialShadersType, Record<string, string>>

/**
 * Useful WGSL code chunks added to the vertex and/or fragment shaders
 */
export const ShaderChunks = {
  /** WGSL code chunks added to the vertex shader */
  vertex: {
    /** Applies given texture matrix to given uv coordinates */
    get_uv_cover,
  },
  /** WGSL code chunks added to the fragment shader */
  fragment: {
    /** Applies given texture matrix to given uv coordinates */
    get_uv_cover,
    /** Convert vertex position to uv coordinates */
    get_vertex_to_uv_coords,
  },
} as ShaderChunks

/**
 * Useful WGSL code chunks added to the projected Meshes vertex and/or fragment shaders
 */
export const ProjectedShaderChunks = {
  /** WGSL code chunks added to the vertex shader */
  vertex: {
    /** Get output vec4f position vector by applying model view projection matrix to vec3f attribute position vector */
    get_output_position,
  },
  /** WGSL code chunks added to the fragment shader */
  fragment: {},
} as ProjectedShaderChunks