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• Pack.h

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resources.shaders.util.Pack.h Maven / Gradle / Ivy

vec3 PackFloat(float f)
{
  vec3 rgb;

  rgb = floor(f * vec3(128.0, 128.0 * 256.0, 128.0 * 256.0 * 256.0));
  rgb -= vec3 (0.0, rgb.r * 256.0, rgb.g * 256.0);
  rgb /= 255.0;

  return rgb;
}

float UnpackFloat(vec3 rgb)
{
  return dot(rgb, vec3(1.0, 1.0 / 256.0, 1.0 / 256.0 / 256.0) * 255.0 / 128.0);
}