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#ifdef GL_ES

precision mediump float;

#endif

uniform mat4 uMVPMatrix;

uniform float uFurLength;

uniform float uLayer;

uniform vec3 uGravity;

attribute vec4 aPosition;

attribute vec4 aColor;

attribute vec3 aNormal;

attribute vec2 aTexCoord0;

varying vec4 vColor;

varying vec2 vTexCoord;

vec3 gravity;

void main()

{

	vec4 p;

	p = aPosition + vec4(aNormal, 0.0) * uFurLength;

	vec3 gravity;

	gravity = vec3(uMVPMatrix * vec4(uGravity, 0.0));

	float k = pow(uLayer, 2.0);

	p = p + vec4(gravity*k, 0.0);

	gl_Position = uMVPMatrix * p;

	vColor = aColor;

	vTexCoord = aTexCoord0;

}