#ifdef GL_ES
attribute vec3 inVertex;
attribute vec3 inNormal;
attribute vec2 inTexCoord0;

varying float specular;
varying float diffuse;
varying vec2 vTexCoord;
#else
in vec3 inVertex;
in vec3 inNormal;
in vec2 inTexCoord0;

out float specular;
out float diffuse;
out vec2 vTexCoord;
#endif
uniform mat4 projectionMatrix;
uniform mat4 modelViewMatrix;

uniform vec3 lightSource1;
uniform vec3 lightSource1HV;
uniform vec3 lightSource2;
uniform vec3 lightSource2HV;

uniform float brightness;

void main()
{
	float lambert = (max(0.0, dot(inNormal, lightSource1))
		+ max(0.0, dot(inNormal, lightSource2)));
	
	vec3 hV = normalize(lightSource1HV + lightSource2HV);
	specular = max(dot(hV, inNormal), 0.0) * 0.35;
	diffuse = lambert * (0.75 * 0.75) * brightness;

    vTexCoord = vec4(inTexCoord0, 0, 0).st;
	gl_Position = projectionMatrix * modelViewMatrix * vec4(inVertex, 1.0);
}