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#ifndef __PBR_UTILS_INC
#define __PBR_UTILS_INC
float perceptualRoughnessToRoughness(float perceptualRoughness) {
return perceptualRoughness * perceptualRoughness;
}
float roughnessToPerceptualRoughness(float roughness) {
return sqrt(roughness);
}
float smoothnessToPerceptualRoughness(float smoothness) {
return 1.0f - smoothness;
}
float smoothnessToRoughness(float smoothness) {
return perceptualRoughnessToRoughness(smoothnessToPerceptualRoughness(smoothness));
}
#endif // __PBR_UTILS_INC
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