forked from bartvdbraak/blender
70 lines
2.2 KiB
C
70 lines
2.2 KiB
C
/*
|
|
* Copyright 2011-2013 Blender Foundation
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
CCL_NAMESPACE_BEGIN
|
|
|
|
/* Noise */
|
|
|
|
ccl_device_inline void svm_noise(float3 p, float detail, float distortion, float *fac, float3 *color)
|
|
{
|
|
NodeNoiseBasis basis = NODE_NOISE_PERLIN;
|
|
int hard = 0;
|
|
|
|
if(distortion != 0.0f) {
|
|
float3 r, offset = make_float3(13.5f, 13.5f, 13.5f);
|
|
|
|
r.x = noise_basis(p + offset, basis) * distortion;
|
|
r.y = noise_basis(p, basis) * distortion;
|
|
r.z = noise_basis(p - offset, basis) * distortion;
|
|
|
|
p += r;
|
|
}
|
|
|
|
*fac = noise_turbulence(p, basis, detail, hard);
|
|
*color = make_float3(*fac,
|
|
noise_turbulence(make_float3(p.y, p.x, p.z), basis, detail, hard),
|
|
noise_turbulence(make_float3(p.y, p.z, p.x), basis, detail, hard));
|
|
}
|
|
|
|
ccl_device void svm_node_tex_noise(KernelGlobals *kg, ShaderData *sd, float *stack, uint4 node, int *offset)
|
|
{
|
|
uint co_offset, scale_offset, detail_offset, distortion_offset, fac_offset, color_offset;
|
|
|
|
decode_node_uchar4(node.y, &co_offset, &scale_offset, &detail_offset, &distortion_offset);
|
|
|
|
uint4 node2 = read_node(kg, offset);
|
|
|
|
float scale = stack_load_float_default(stack, scale_offset, node2.x);
|
|
float detail = stack_load_float_default(stack, detail_offset, node2.y);
|
|
float distortion = stack_load_float_default(stack, distortion_offset, node2.z);
|
|
float3 co = stack_load_float3(stack, co_offset);
|
|
|
|
float3 color;
|
|
float f;
|
|
|
|
svm_noise(co*scale, detail, distortion, &f, &color);
|
|
|
|
decode_node_uchar4(node.z, &color_offset, &fac_offset, NULL, NULL);
|
|
|
|
if(stack_valid(fac_offset))
|
|
stack_store_float(stack, fac_offset, f);
|
|
if(stack_valid(color_offset))
|
|
stack_store_float3(stack, color_offset, color);
|
|
}
|
|
|
|
CCL_NAMESPACE_END
|
|
|