forked from bartvdbraak/blender
56 lines
1.8 KiB
C
56 lines
1.8 KiB
C
/*
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* Copyright 2011, Blender Foundation.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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CCL_NAMESPACE_BEGIN
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/* Clouds */
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__device_inline void svm_clouds(NodeNoiseBasis basis, int hard, int depth, float size, float3 p, float *fac, float3 *color)
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{
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p /= size;
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*fac = noise_turbulence(p, basis, depth, hard);
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*color = make_float3(*fac,
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noise_turbulence(make_float3(p.y, p.x, p.z), basis, depth, hard),
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noise_turbulence(make_float3(p.y, p.z, p.x), basis, depth, hard));
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}
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__device void svm_node_tex_clouds(ShaderData *sd, float *stack, uint4 node)
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{
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uint basis, hard, depth;
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uint size_offset, co_offset, fac_offset, color_offset;
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decode_node_uchar4(node.y, &basis, &hard, &depth, NULL);
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decode_node_uchar4(node.z, &size_offset, &co_offset, &fac_offset, &color_offset);
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float3 co = stack_load_float3(stack, co_offset);
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float size = stack_load_float_default(stack, size_offset, node.w);
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size = nonzerof(size, 1e-5f);
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float3 color;
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float f;
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svm_clouds((NodeNoiseBasis)basis, hard, depth, size, co, &f, &color);
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if(stack_valid(fac_offset)) stack_store_float(stack, fac_offset, f);
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if(stack_valid(color_offset)) stack_store_float3(stack, color_offset, color);
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}
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CCL_NAMESPACE_END
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