forked from bartvdbraak/blender
113 lines
2.6 KiB
C
113 lines
2.6 KiB
C
/*
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* Copyright 2011-2013 Blender Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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CCL_NAMESPACE_BEGIN
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/* Magic */
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ccl_device_noinline float3 svm_magic(float3 p, int n, float distortion)
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{
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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 *= distortion;
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y *= distortion;
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z *= distortion;
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y = -cosf(x-y+z);
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y *= distortion;
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if(n > 1) {
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x = cosf(x-y-z);
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x *= distortion;
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if(n > 2) {
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z = sinf(-x-y-z);
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z *= distortion;
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if(n > 3) {
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x = -cosf(-x+y-z);
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x *= distortion;
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if(n > 4) {
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y = -sinf(-x+y+z);
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y *= distortion;
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if(n > 5) {
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y = -cosf(-x+y+z);
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y *= distortion;
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if(n > 6) {
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x = cosf(x+y+z);
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x *= distortion;
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if(n > 7) {
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z = sinf(x+y-z);
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z *= distortion;
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if(n > 8) {
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x = -cosf(-x-y+z);
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x *= distortion;
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if(n > 9) {
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y = -sinf(x-y+z);
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y *= distortion;
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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(distortion != 0.0f) {
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distortion *= 2.0f;
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x /= distortion;
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y /= distortion;
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z /= distortion;
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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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ccl_device void svm_node_tex_magic(KernelGlobals *kg, ShaderData *sd, float *stack, uint4 node, int *offset)
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{
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uint depth;
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uint scale_offset, distortion_offset, co_offset, fac_offset, color_offset;
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decode_node_uchar4(node.y, &depth, &color_offset, &fac_offset, NULL);
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decode_node_uchar4(node.z, &co_offset, &scale_offset, &distortion_offset, NULL);
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uint4 node2 = read_node(kg, offset);
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float3 co = stack_load_float3(stack, co_offset);
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float scale = stack_load_float_default(stack, scale_offset, node2.x);
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float distortion = stack_load_float_default(stack, distortion_offset, node2.y);
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float3 color = svm_magic(co*scale, depth, distortion);
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if(stack_valid(fac_offset))
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stack_store_float(stack, fac_offset, average(color));
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if(stack_valid(color_offset))
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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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