var vShader =`
	uniform mat4 uProjectionMatrix;
	uniform mat4 uViewMatrix;
	uniform mat4 uModelMatrix;
	uniform mat4 uNormalMatrix;
	uniform bool uUseNormalMatrix;
	
	uniform vec3 uAmbientColor;
	uniform vec3 uDiffuseColor;
	
	uniform vec3 uLightDir;
	
	attribute vec3 aXYZ;
	attribute vec3 aColor;
	attribute vec3 aNormal;
	
	varying vec3 vColor;
	varying vec3 vXYZ;

	// Black Hole variables
	attribute float aBH;
	varying float vBH;
	attribute vec3 aBHXYZ;
	varying vec3 vBHXYZ;
	attribute float aSR;
	varying float vSR;
	attribute float aR;
	varying float vR;
	
	void main ()
	{
		mat4 mvMatrix = uViewMatrix * uModelMatrix;
		gl_Position = uProjectionMatrix * mvMatrix * vec4(aXYZ,1);
		mat4 nMatrix = uUseNormalMatrix?uNormalMatrix:mvMatrix;
	
		vColor = uAmbientColor*aColor;
	
		vec3 light = normalize(-uLightDir);
		vec3 normal = vec3(normalize(nMatrix*vec4(aNormal,0)));
		vColor += aColor*uDiffuseColor*max(dot(normal,light),0.0);
		vXYZ = (uModelMatrix * vec4(aXYZ,1)).xyz;

		vBH = aBH; vBHXYZ = aBHXYZ; vSR = aSR; vR = aR;
	}
`;
	
var fShader = `
	precision mediump float;
	
	varying vec3 vColor;
	varying vec3 vXYZ;

	varying float vBH;
	varying vec3 vBHXYZ;
	varying float vSR;
	varying float vR;

	void main()
	{
		if (vBH > 0.5 && distance(vXYZ, vBHXYZ) <= vR) {
			float dist = distance(vXYZ, vBHXYZ);
			if (dist < vSR) {
				gl_FragColor = vec4(0,0,0,1);
			}
			else {
				gl_FragColor = vec4(vColor,0.5);
			}
		}
		else {
			gl_FragColor = vec4(vColor,1.0);
		}
	}
`;