overte-HifiExperiments/libraries/render-utils/src/directional_light_shadow_map.slf

<@include gpu/Config.slh@>
<$VERSION_HEADER$>
//  Generated on <$_SCRIBE_DATE$>
//
//  directional_light.frag
//  fragment shader
//
//  Created by Andrzej Kapolka on 9/3/14.
//  Copyright 2014 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
//

// Everything about deferred buffer
<@include DeferredBuffer.slh@>

<@include DeferredGlobalLight.slh@>

<$declareEvalLightmappedColor()$>
<$declareEvalAmbientGlobalColor()$>

// Everything about shadow
<@include Shadow.slh@>

in vec2 _texCoord0;
out vec4 _fragColor;

void main(void) {
    DeferredTransform deferredTransform = getDeferredTransform();
    DeferredFragment frag = unpackDeferredFragment(deferredTransform, _texCoord0);

    // Eval shadow Texcoord and then Attenuation
    vec4 shadowTexcoord = evalShadowTexcoord(frag.position);
    float shadowAttenuation = evalShadowAttenuation(shadowTexcoord);

    // Light mapped or not ?
    if ((frag.normalVal.a >= 0.45) && (frag.normalVal.a <= 0.55)) {
        vec3 color = evalLightmappedColor(
                                deferredTransform.viewInverse,
                                shadowAttenuation,
                                frag.normal,
                                frag.diffuse,
                                frag.specularVal.xyz);
        _fragColor = vec4(color, 1.0);
    } else {
        vec3 color = evalAmbienGlobalColor(
                                deferredTransform.viewInverse,
                                shadowAttenuation,
                                frag.position.xyz,
                                frag.normal,
                                frag.diffuse,
                                frag.specular,
                                frag.gloss);

        _fragColor = vec4(color, frag.normalVal.a);
    }
}