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77 lines
3.6 KiB
GLSL
77 lines
3.6 KiB
GLSL
/*****************************************************************************************
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* *
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* OpenSpace *
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* *
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* Copyright (c) 2014 - 2017 *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a copy of this *
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* software and associated documentation files (the "Software"), to deal in the Software *
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* without restriction, including without limitation the rights to use, copy, modify, *
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* merge, publish, distribute, sublicense, and/or sell copies of the Software, and to *
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* permit persons to whom the Software is furnished to do so, subject to the following *
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* conditions: *
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* *
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* The above copyright notice and this permission notice shall be included in all copies *
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* or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, *
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* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A *
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* PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT *
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF *
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* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE *
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* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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****************************************************************************************/
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#include "fragment.glsl"
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in vec2 vs_st;
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in vec3 vs_normalViewSpace;
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in vec4 vs_positionCameraSpace;
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in float vs_screenSpaceDepth;
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uniform float fading;
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uniform bool performShading = true;
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uniform vec3 directionToSunViewSpace;
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uniform sampler2D texture1;
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const specularAlbedo = vec3(1.0);
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Fragment getFragment() {
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const vec3 diffuseAlbedo = texture(texture1, vs_st).rgb;
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Fragment frag;
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if (performShading) {
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// Some of these values could be passed in as uniforms
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const vec3 lightColorAmbient = vec3(1.0);
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const vec3 lightColor = vec3(1.0);
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const vec3 n = normalize(vs_normalViewSpace);
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const vec3 l = directionToSunViewSpace;
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const vec3 c = normalize(vs_positionCameraSpace.xyz);
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const vec3 r = reflect(l, n);
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const float ambientIntensity = 0.2;
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const float diffuseIntensity = 1;
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const float specularIntensity = 1;
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const float diffuseCosineFactor = dot(n,l);
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const float specularCosineFactor = dot(c,r);
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const float specularPower = 100.0;
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const vec3 ambientColor = ambientIntensity * lightColorAmbient * diffuseAlbedo;
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const vec3 diffuseColor = diffuseIntensity * lightColor * diffuseAlbedo * max(diffuseCosineFactor, 0);
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const vec3 specularColor = specularIntensity * lightColor * specularAlbedo * pow(max(specularCosineFactor, 0), specularPower);
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frag.color.rgb = ambientColor + diffuseColor + specularColor;
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}
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else {
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frag.color.rgb = diffuseAlbedo;
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}
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frag.color.a = fading;
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frag.depth = vs_screenSpaceDepth;
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return frag;
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}
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