forked from bartvdbraak/blender
109 lines
2.3 KiB
C
109 lines
2.3 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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/* Magic */
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__device_noinline float3 svm_magic(float3 p, int n, float turbulence)
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{
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float turb = turbulence/5.0f;
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float x = sinf((p.x + p.y + p.z)*5.0f);
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float y = cosf((-p.x + p.y - p.z)*5.0f);
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float z = -cosf((-p.x - p.y + p.z)*5.0f);
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if(n > 0) {
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x *= turb;
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y *= turb;
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z *= turb;
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y = -cosf(x-y+z);
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y *= turb;
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if(n > 1) {
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x= cosf(x-y-z);
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x *= turb;
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if(n > 2) {
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z= sinf(-x-y-z);
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z *= turb;
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if(n > 3) {
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x= -cosf(-x+y-z);
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x *= turb;
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if(n > 4) {
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y= -sinf(-x+y+z);
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y *= turb;
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if(n > 5) {
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y= -cosf(-x+y+z);
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y *= turb;
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if(n > 6) {
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x= cosf(x+y+z);
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x *= turb;
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if(n > 7) {
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z= sinf(x+y-z);
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z *= turb;
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if(n > 8) {
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x= -cosf(-x-y+z);
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x *= turb;
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if(n > 9) {
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y= -sinf(x-y+z);
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y *= turb;
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}
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}
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}
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}
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}
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}
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}
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}
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}
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}
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if(turb != 0.0f) {
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turb *= 2.0f;
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x /= turb;
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y /= turb;
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z /= turb;
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}
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return make_float3(0.5f - x, 0.5f - y, 0.5f - z);
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}
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__device void svm_node_tex_magic(ShaderData *sd, float *stack, uint4 node)
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{
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uint depth, turbulence_offset, co_offset, color_offset;
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decode_node_uchar4(node.y, &depth, &turbulence_offset, &co_offset, &color_offset);
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float3 co = stack_load_float3(stack, co_offset);
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float turbulence = stack_load_float_default(stack, turbulence_offset, node.z);
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float3 color = svm_magic(co, depth, turbulence);
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stack_store_float3(stack, color_offset, color);
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}
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CCL_NAMESPACE_END
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