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https://github.com/OpenSpace/OpenSpace.git
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98 lines
4.0 KiB
GLSL
98 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 *
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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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#include <${MODULE_GLOBEBROWSING}/shaders/ellipsoid.hglsl>
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#include <${MODULE_GLOBEBROWSING}/shaders/texturetile.hglsl>
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#define NUMLAYERS_COLORTEXTURE #{numLayersColor}
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#define NUMLAYERS_HEIGHTMAP #{numLayersHeight}
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uniform mat4 modelViewProjectionTransform;
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uniform vec3 radiiSquared;
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uniform vec2 minLatLon;
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uniform vec2 lonLatScalingFactor;
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uniform int xSegments;
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uniform int ySegments;
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uniform TextureTile heightTiles[NUMLAYERS_HEIGHTMAP];
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layout(location = 1) in vec2 in_uv;
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out vec2 fs_uv;
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out vec4 fs_position;
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PositionNormalPair globalInterpolation() {
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vec2 lonLatInput;
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lonLatInput.y = minLatLon.y + lonLatScalingFactor.y * in_uv.y; // Lat
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lonLatInput.x = minLatLon.x + lonLatScalingFactor.x * in_uv.x; // Lon
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PositionNormalPair positionPairModelSpace = geodetic2ToCartesian(lonLatInput.y, lonLatInput.x, radiiSquared);
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return positionPairModelSpace;
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}
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void main()
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{
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PositionNormalPair pair = globalInterpolation();
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float height = 0;
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#for i in 0..#{numLayersHeight}
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{
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vec2 samplePos =
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heightTiles[#{i}].uvTransform.uvScale * in_uv +
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heightTiles[#{i}].uvTransform.uvOffset;
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float sampledValue = texture(heightTiles[#{i}].textureSampler, samplePos).r;
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// TODO : Some kind of blending here. Now it just writes over
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height = (sampledValue *
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heightTiles[#{i}].depthTransform.depthScale +
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heightTiles[#{i}].depthTransform.depthOffset);
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// Skirts
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int vertexIDx = gl_VertexID % (xSegments + 3);
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int vertexIDy = gl_VertexID / (xSegments + 3);
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if (vertexIDx == 0 ||
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vertexIDy == 0 ||
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vertexIDx == (xSegments + 2) ||
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vertexIDy == (xSegments + 2) ) {
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height = 0;
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}
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}
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#endfor
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// Add the height in the direction of the normal
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pair.position += pair.normal * height;
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vec4 positionClippingSpace = modelViewProjectionTransform * vec4(pair.position, 1);
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// Write output
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fs_uv = in_uv;
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fs_position = z_normalization(positionClippingSpace);
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gl_Position = fs_position;
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} |