forked from bartvdbraak/blender
64 lines
2.0 KiB
C
64 lines
2.0 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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/* Stucci */
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__device_noinline float svm_stucci(NodeStucciType type, NodeNoiseBasis basis, int hard, float turbulence, float size, float3 p)
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{
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p /= size;
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float b2 = noise_basis_hard(p, basis, hard);
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float ofs = turbulence/200.0f;
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if(type != NODE_STUCCI_PLASTIC)
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ofs *= b2*b2;
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float r = noise_basis_hard(make_float3(p.x, p.y, p.z+ofs), basis, hard);
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if(type == NODE_STUCCI_WALL_OUT)
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r = 1.0f - r;
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return fmaxf(r, 0.0f);
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}
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__device void svm_node_tex_stucci(KernelGlobals *kg, ShaderData *sd, float *stack, uint4 node, int *offset)
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{
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uint4 node2 = read_node(kg, offset);
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uint type, basis, hard;
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uint size_offset, turbulence_offset, co_offset, fac_offset;
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decode_node_uchar4(node.y, &type, &basis, &hard, NULL);
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decode_node_uchar4(node.z, &size_offset, &turbulence_offset, &co_offset, &fac_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, node2.x);
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float turbulence = stack_load_float_default(stack, turbulence_offset, node2.y);
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size = nonzerof(size, 1e-5f);
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float f = svm_stucci((NodeStucciType)type, (NodeNoiseBasis)basis, hard,
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turbulence, size, co);
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stack_store_float(stack, fac_offset, f);
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}
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CCL_NAMESPACE_END
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