forked from bartvdbraak/blender
20f6a0f2d7
Let's finally delete this code, after 4 years of being unused, there really is no excuse anymore. If we decide to extend the procedural textures in SVM, we can do this anytime in the future.
141 lines
3.6 KiB
C
141 lines
3.6 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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/* Voronoi */
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ccl_device float voronoi_F1_distance(float3 p)
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{
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/* returns squared distance in da */
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float da = 1e10f;
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#ifndef __KERNEL_SSE2__
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int ix = floor_to_int(p.x), iy = floor_to_int(p.y), iz = floor_to_int(p.z);
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for(int xx = -1; xx <= 1; xx++) {
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for(int yy = -1; yy <= 1; yy++) {
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for(int zz = -1; zz <= 1; zz++) {
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float3 ip = make_float3(ix + xx, iy + yy, iz + zz);
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float3 vp = ip + cellnoise_color(ip);
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float d = len_squared(p - vp);
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da = min(d, da);
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}
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}
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}
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#else
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ssef vec_p = load4f(p);
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ssei xyzi = quick_floor_sse(vec_p);
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for(int xx = -1; xx <= 1; xx++) {
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for(int yy = -1; yy <= 1; yy++) {
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for(int zz = -1; zz <= 1; zz++) {
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ssef ip = ssef(xyzi + ssei(xx, yy, zz, 0));
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ssef vp = ip + cellnoise_color(ip);
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float d = len_squared<1, 1, 1, 0>(vec_p - vp);
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da = min(d, da);
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}
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}
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}
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#endif
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return da;
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}
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ccl_device float3 voronoi_F1_color(float3 p)
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{
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/* returns color of the nearest point */
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float da = 1e10f;
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#ifndef __KERNEL_SSE2__
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float3 pa;
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int ix = floor_to_int(p.x), iy = floor_to_int(p.y), iz = floor_to_int(p.z);
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for(int xx = -1; xx <= 1; xx++) {
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for(int yy = -1; yy <= 1; yy++) {
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for(int zz = -1; zz <= 1; zz++) {
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float3 ip = make_float3(ix + xx, iy + yy, iz + zz);
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float3 vp = ip + cellnoise_color(ip);
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float d = len_squared(p - vp);
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if(d < da) {
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da = d;
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pa = vp;
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}
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}
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}
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}
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return cellnoise_color(pa);
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#else
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ssef pa, vec_p = load4f(p);
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ssei xyzi = quick_floor_sse(vec_p);
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for(int xx = -1; xx <= 1; xx++) {
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for(int yy = -1; yy <= 1; yy++) {
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for(int zz = -1; zz <= 1; zz++) {
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ssef ip = ssef(xyzi + ssei(xx, yy, zz, 0));
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ssef vp = ip + cellnoise_color(ip);
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float d = len_squared<1, 1, 1, 0>(vec_p - vp);
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if(d < da) {
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da = d;
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pa = vp;
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}
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}
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}
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}
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ssef color = cellnoise_color(pa);
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return (float3 &)color;
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#endif
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}
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ccl_device_noinline float4 svm_voronoi(NodeVoronoiColoring coloring, float3 p)
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{
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if(coloring == NODE_VORONOI_INTENSITY) {
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/* compute squared distance to the nearest neighbour */
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float fac = voronoi_F1_distance(p);
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return make_float4(fac, fac, fac, fac);
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}
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else {
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/* compute color of the nearest neighbour */
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float3 color = voronoi_F1_color(p);
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return make_float4(color.x, color.y, color.z, average(color));
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}
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}
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ccl_device void svm_node_tex_voronoi(KernelGlobals *kg, ShaderData *sd, float *stack, uint4 node, int *offset)
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{
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uint coloring = node.y;
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uint scale_offset, co_offset, fac_offset, color_offset;
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decode_node_uchar4(node.z, &scale_offset, &co_offset, &fac_offset, &color_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, node.w);
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float4 result = svm_voronoi((NodeVoronoiColoring)coloring, co*scale);
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float3 color = make_float3(result.x, result.y, result.z);
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float f = result.w;
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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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