gpu-curtains/dist/esm/core/shaders/chunks/fragment/head/RE-indirect-diffuse.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 REIndirectDiffuse = (
  /* wgsl */
  `
fn getIndirectDiffuse(irradiance: vec3f, diffuseColor: vec3f, ptr_reflectedLight: ptr<function, ReflectedLight>) {
  (*ptr_reflectedLight).indirectDiffuse += irradiance * BRDF_Lambert( diffuseColor );
}

// Indirect Diffuse RenderEquations
fn RE_IndirectDiffuse(irradiance: vec3f, diffuseColor: vec3f, ptr_reflectedLight: ptr<function, ReflectedLight>) {
  var totalAmbientIrradiance: vec3f = irradiance;
  
  for(var i: i32 = 0; i < ambientLights.count; i++) {
    totalAmbientIrradiance += ambientLights.color[i];
  }
  
  getIndirectDiffuse(totalAmbientIrradiance, diffuseColor, ptr_reflectedLight);
}
`
);

export { REIndirectDiffuse };