#ifdef GL_ES
precision mediump int;
precision mediump float;
#endif

#include <OgreUnifiedShader.h>

OGRE_UNIFORMS(
uniform mat4 worldViewProj;
uniform vec3 eyePosition;
)

MAIN_PARAMETERS
IN(vec4 vertex, POSITION)
IN(vec4 normal, NORMAL)
IN(vec2 uv0, TEXCOORD0)
OUT(vec2 NDotV, TEXCOORD0)
MAIN_DECLARATION
{
	vec4 eyeDir = normalize(vec4(eyePosition - vertex.xyz, 0.0));
  gl_Position = mul(worldViewProj, vertex);
  NDotV = vec2_splat(clamp(dot(normal, eyeDir), 0.0, 1.0));
}