procedural-3d-engine/shaders/glsl/gears/gears.frag

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2016-02-16 15:07:25 +01:00
#version 450
layout (location = 0) in vec3 inNormal;
layout (location = 1) in vec3 inColor;
layout (location = 2) in vec3 inEyePos;
layout (location = 3) in vec3 inLightVec;
layout (location = 0) out vec4 outFragColor;
void main()
{
vec3 Eye = normalize(-inEyePos);
vec3 Reflected = normalize(reflect(-inLightVec, inNormal));
vec4 IAmbient = vec4(0.2, 0.2, 0.2, 1.0);
vec4 IDiffuse = vec4(0.5, 0.5, 0.5, 0.5) * max(dot(inNormal, inLightVec), 0.0);
float specular = 0.25;
vec4 ISpecular = vec4(0.5, 0.5, 0.5, 1.0) * pow(max(dot(Reflected, Eye), 0.0), 0.8) * specular;
outFragColor = vec4((IAmbient + IDiffuse) * vec4(inColor, 1.0) + ISpecular);
}