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Diffstat (limited to 'data/shaders/phong-frag.glsl')
| -rw-r--r-- | data/shaders/phong-frag.glsl | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/data/shaders/phong-frag.glsl b/data/shaders/phong-frag.glsl index 9d8e40c..7cab3f8 100644 --- a/data/shaders/phong-frag.glsl +++ b/data/shaders/phong-frag.glsl @@ -174,7 +174,8 @@ void main() { float diffuseFactor = posDot(lightDir, normal); vec3 reflectDir = reflect(-lightDir, normal); vec3 diffuseColor = baseDiffuseColor * diffuseFactor; - float specularFactor = pow(posDot(viewDir, reflectDir), material.shininess); + vec3 halfVector = normalize(lightDir + viewDir); + float specularFactor = pow(posDot(halfVector, normal), material.shininess); vec3 specularColor = baseSpecularColor * specularFactor; color += (diffuseColor + specularColor) * radiance; } |