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Fix specular light component 

account for the component being negative, and fix a typo
This commit is contained in:
Peder Bergebakken Sundt 2019-03-16 20:50:39 +01:00
parent 02ab58ecc9
commit 15dfce421e
1 changed files with 6 additions and 3 deletions
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9
res/shaders/simple.frag
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@ -14,7 +14,7 @@ uniform mat4 MVP;
uniform mat4 MV;
uniform mat4 MVnormal;
uniform float shininess;
uniform float shinyness;
uniform bool isIlluminated;
uniform bool isTextured;
@ -74,11 +74,14 @@ vec4 phong(vec4 basecolor) {
), 0.0, 1.25);
float diffuse_i = dot(nnormal, L);
float specular_i = pow(dot(reflect(-L, nnormal), normalize(-vertex)), shininess);
float specular_i = dot(reflect(-L, nnormal), vec3(0.0)-normalize(vertex));
specular_i = (specular_i>0)
? pow(specular_i, shinyness)
: 0;
emmissive_component += light[i].color_emissive;
if (diffuse_i>0) diffuse_component += light[i].color_diffuse * diffuse_i * attenuation;
if (specular_i>0) specular_component += light[i].color_specular * specular_i * attenuation;
specular_component += light[i].color_specular * specular_i * attenuation;
}
return vec4(basecolor.rgb * (emmissive_component + diffuse_component) + specular_component, basecolor.a);