overte-Armored-Dragon/libraries/render-utils/src/model_unlit_fade.slf

<@include gpu/Config.slh@>
<$VERSION_HEADER$>
//  Generated on <$_SCRIBE_DATE$>
//
//  model_unlit_fade.frag
//  fragment shader
//
//  Created by Olivier Prat on 06/05/17.
//  Copyright 2017 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 DeferredBufferWrite.slh@>
<@include LightingModel.slh@>
<@include model/Material.slh@>

<@include Fade.slh@>
<$declareFadeFragment()$>

<@include MaterialTextures.slh@>
<$declareMaterialTextures(ALBEDO)$>

in vec2 _texCoord0;
in vec3 _normal;
in vec3 _color;
in float _alpha;
in vec4 _worldPosition;

void main(void) {
    vec3 fadeEmissive;
    FadeObjectParams fadeParams;

    <$fetchFadeObjectParams(fadeParams)$>
    applyFade(fadeParams, _worldPosition.xyz, fadeEmissive);

    Material mat = getMaterial();
    int matKey = getMaterialKey(mat);
    <$fetchMaterialTexturesCoord0(matKey, _texCoord0, albedoTex)$>

    float opacity = 1.0;
    <$evalMaterialOpacity(albedoTex.a, opacity, matKey, opacity)$>;
    <$discardTransparent(opacity)$>;

    vec3 albedo = getMaterialAlbedo(mat);
    <$evalMaterialAlbedo(albedoTex, albedo, matKey, albedo)$>;
    albedo *= _color;
    albedo += fadeEmissive;
    packDeferredFragmentUnlit(
        normalize(_normal), 
        opacity,
        albedo * isUnlitEnabled());
}