gpu-curtains/dist/esm/core/shaders/chunks/fragment/head/get-IBL-indirect-irradiance.mjs

gpu-curtains is a 3D WebGPU rendering engine. It can be used as a standalone 3D engine, but also includes extra classes focused on mapping 3d objects to DOM elements; It allows users to synchronize values such as position, sizing, or scale between them.

const getIBLIndirectIrradiance = (
  /* wgsl */
  `
fn getIBLIndirectIrradiance(
  normal: vec3f,
  diffuseColor: vec3f,
  clampSampler: sampler,
  envDiffuseTexture: texture_cube<f32>,
  envRotation: mat3x3f,
  envDiffuseIntensity: f32,
) -> vec3f {
  // IBL diffuse (irradiance)
  let diffuseLight: vec4f = textureSample(
    envDiffuseTexture,
    clampSampler,
    normal * envRotation
  );

  return diffuseLight.rgb * envDiffuseIntensity;
}
`
);

export { getIBLIndirectIrradiance };