59 lines
2.1 KiB
GLSL
59 lines
2.1 KiB
GLSL
/**
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*
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* RenderPipeline
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*
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* Copyright (c) 2014-2016 tobspr <tobias.springer1@gmail.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies 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
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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*/
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#version 430
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// Shader to generate the cloud noise textures
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layout (local_size_x = 8, local_size_y = 8, local_size_z = 4) in;
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uniform writeonly image3D DestTex;
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const int tex_size = 128;
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#pragma include "noise.inc.glsl"
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void main() {
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ivec3 coord = ivec3(gl_GlobalInvocationID.xyz);
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vec3 flt_coord = coord / float(tex_size);
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float fbm0 = fbm(flt_coord * 5);
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float worley = fbm_worley(flt_coord, 8, 0.7, 2, 0.2723424);
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float OldMin = -1.0;
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float OldMax = 1.0;
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float NewMin = worley * 0.5;
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float NewMax = 1.0;
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float combined = NewMin + (((fbm0 - OldMin) / (OldMax - OldMin)) * (NewMax - NewMin));
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fbm0 = combined;
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float worley1 = sqrt(fbm_worley(flt_coord, 8, 0.6, 4, 0.164354)) * 1.0;
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float worley2 = sqrt(fbm_worley(flt_coord, 16, 0.6, 3, 0.19123)) * 1.0;
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float worley3 = sqrt(fbm_worley(flt_coord, 32, 0.4, 2, 0.2613)) * 1.0;
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imageStore(DestTex, coord, vec4(fbm0, worley1, worley2, worley3));
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}
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