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Using another formula for the specularDistribution giving much better results

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samcake 2016-03-01 17:09:57 -08:00
parent 16ac69315f
commit aed2ad72d1
1 changed files with 3 additions and 3 deletions
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6
libraries/render-utils/src/DeferredLighting.slh
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@ -20,19 +20,19 @@ vec3 fresnelSchlick(vec3 fresnelColor, vec3 lightDir, vec3 halfDir) {
float specularDistribution(float roughness, vec3 normal, vec3 halfDir) {
float ndoth = clamp(dot(halfDir, normal), 0.0, 1.0);
float gloss2 = pow(roughness, 4);
float gloss2 = pow(0.001 + roughness, 4);
float denom = (ndoth * ndoth*(gloss2 - 1) + 1);
float power = gloss2 / (3.14159 * denom * denom);
return power;
}
/*
<! //NOTE: ANother implementation for specularDistribution
float specularDistribution(float roughness, vec3 normal, vec3 halfDir) {
float gloss = exp2(10 * (1.0 - roughness) + 1);
float power = pow(clamp(dot(halfDir, normal), 0.0, 1.0), gloss);
power *= (gloss * 0.125 + 0.25);
return power;
}
*/
!>
// Frag Shading returns the diffuse amount as W and the specular rgb as xyz
vec4 evalPBRShading(vec3 fragNormal, vec3 fragLightDir, vec3 fragEyeDir, float metallic, vec3 fresnel, float roughness) {
// Diffuse Lighting