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Merge pull request #2265 from Capostrophic/material

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Fix shader specular lighting (again)
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Bret Curtis 2019-03-18 21:17:41 +01:00 committed by GitHub
commit 0c95ffab8f
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1 changed files with 4 additions and 3 deletions
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files/shaders/lighting.glsl
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@ -74,9 +74,10 @@ vec4 doLighting(vec3 viewPos, vec3 viewNormal, vec4 vertexColor, out vec3 shadow
vec3 getSpecular(vec3 viewNormal, vec3 viewDirection, float shininess, vec3 matSpec) vec3 getSpecular(vec3 viewNormal, vec3 viewDirection, float shininess, vec3 matSpec)
{ {
vec3 lightDir = normalize(gl_LightSource[0].position.xyz); vec3 lightDir = normalize(gl_LightSource[0].position.xyz);
float NdotL = max(dot(viewNormal, lightDir), 0.0); float NdotL = dot(viewNormal, lightDir);
if (NdotL < 0.0) if (NdotL <= 0.0)
return vec3(0.,0.,0.); return vec3(0.,0.,0.);
vec3 halfVec = normalize(lightDir - viewDirection); vec3 halfVec = normalize(lightDir - viewDirection);
return pow(max(dot(viewNormal, halfVec), 0.0), shininess) * gl_LightSource[0].specular.xyz * matSpec; float NdotH = dot(viewNormal, halfVec);
return pow(max(NdotH, 0.0), max(1e-4, shininess)) * gl_LightSource[0].specular.xyz * matSpec;
} }