pex-renderer/shaders/chunks/depth-unpack.glsl.js

Physically Based Renderer for Pex

module.exports = /* glsl */ `
float unpackDepth (const in vec4 rgba_depth) {
  const vec4 bit_shift = vec4(1.0/(256.0*256.0*256.0), 1.0/(256.0*256.0), 1.0/256.0, 1.0);
  float depth = dot(rgba_depth, bit_shift);
  return depth;
}
`