mirror of
https://github.com/OpenSpace/OpenSpace.git
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96 lines
4.0 KiB
GLSL
96 lines
4.0 KiB
GLSL
/*****************************************************************************************
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* *
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* OpenSpace *
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* *
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* Copyright (c) 2014-2016 *
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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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uniform sampler2D baseTexture;
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uniform sampler2D projectionTexture;
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uniform bool _performShading;
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uniform float _projectionFading;
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uniform vec3 directionToSunViewSpace;
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in vec2 vs_st;
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in vec3 vs_normalViewSpace;
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in vec4 vs_positionScreenSpace;
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in vec4 vs_positionCameraSpace;
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#include "PowerScaling/powerScaling_fs.hglsl"
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#include "fragment.glsl"
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Fragment getFragment() {
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vec4 textureColor = texture(baseTexture, vs_st);
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vec4 projectionColor = texture(projectionTexture, vs_st);
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if (projectionColor.a > 0.0) {
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textureColor.rgb = mix(
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textureColor.rgb,
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projectionColor.rgb,
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min(_projectionFading, projectionColor.a)
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);
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}
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vec3 diffuseAlbedo = textureColor.rgb;
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vec3 specularAlbedo = vec3(1);
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vec3 color;
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if (_performShading) {
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// Some of these values could be passed in as uniforms
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vec3 lightColorAmbient = vec3(1);
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vec3 lightColor = vec3(1);
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vec3 n = normalize(vs_normalViewSpace);
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vec3 l = directionToSunViewSpace;
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vec3 c = normalize(vs_positionCameraSpace.xyz);
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vec3 r = reflect(l, n);
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float ambientIntensity = 0.15;
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float diffuseIntensity = 1;
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float specularIntensity = 0.0;
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float diffuseCosineFactor = dot(n,l);
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float specularCosineFactor = dot(c,r);
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float specularPower = 100;
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vec3 ambientColor = ambientIntensity * lightColorAmbient * diffuseAlbedo;
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vec3 diffuseColor = diffuseIntensity * lightColor * diffuseAlbedo * max(diffuseCosineFactor, 0);
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vec3 specularColor = specularIntensity * lightColor * specularAlbedo * pow(max(specularCosineFactor, 0), specularPower);
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color = ambientColor + diffuseColor + specularColor;
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}
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else {
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color = diffuseAlbedo;
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}
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float transparency = 1.0;
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float alpha = _projectionFading * transparency;
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Fragment frag;
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frag.color = vec4(color, alpha);
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frag.depth = vs_positionScreenSpace.w;
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return frag;
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}
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