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https://github.com/OpenSpace/OpenSpace.git
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66 lines
2.9 KiB
GLSL
66 lines
2.9 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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#version __CONTEXT__
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#include "PowerScaling/powerScaling_vs.hglsl"
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in vec4 vs_position;
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in vec4 vs_normal;
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in vec2 vs_uv;
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in vec4 ProjTexCoord;
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out vec4 color;
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uniform sampler2D projectionTexture;
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uniform mat4 ModelTransform;
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uniform vec2 _scaling;
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uniform vec3 boresight;
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bool inRange(float x, float a, float b) {
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return (x >= a && x <= b);
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}
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void main() {
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vec2 uv = vec2(0.5,0.5)*vs_uv+vec2(0.5,0.5);
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vec3 n = normalize(vs_normal.xyz);
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vec4 projected = ProjTexCoord;
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//normalize
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projected.x /= projected.w;
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projected.y /= projected.w;
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//invert gl coordinates
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projected.x = 1 - projected.x;
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if ((inRange(projected.x, 0, 1) && inRange(projected.y, 0, 1)) && (dot(n, boresight) < 0)) {
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color = texture(projectionTexture, projected.xy);
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color.a = 1.0;
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}
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else {
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color = vec4(vec3(0.0), 1.0);
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}
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}
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