<@include gpu/Config.slh@>
<$VERSION_HEADER$>
//  Generated on <$_SCRIBE_DATE$>
//  polyvox.vert
//  vertex shader
//
//  Copyright 2015 High Fidelity, Inc.
//
//  Distributed under the Apache License, Version 2.0.
//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
//

<@include gpu/Transform.slh@>

<$declareStandardTransform()$>

const int MAX_TEXCOORDS = 2;

uniform mat4 texcoordMatrices[MAX_TEXCOORDS];

// interpolated eye position
varying vec4 interpolatedPosition;

// the interpolated normal
varying vec4 interpolatedNormal;

varying vec3 color;

void main(void) {

    // pass along the diffuse color
    color = gl_Color.xyz;

    // and the texture coordinates
    gl_TexCoord[0] = texcoordMatrices[0] * vec4(gl_MultiTexCoord0.xy, 0.0, 1.0);

    // standard transform
    TransformCamera cam = getTransformCamera();
    TransformObject obj = getTransformObject();
    <$transformModelToEyeAndClipPos(cam, obj, gl_Vertex, interpolatedPosition, gl_Position)$>
    <$transformModelToEyeDir(cam, obj, gl_Normal, interpolatedNormal.xyz)$>

    interpolatedNormal = vec4(normalize(interpolatedNormal.xyz), 0.0);
}