139 lines
4.4 KiB
C
139 lines
4.4 KiB
C
/* SPDX-FileCopyrightText: 2011-2022 Blender Foundation
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*
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* SPDX-License-Identifier: Apache-2.0 */
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#pragma once
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#include "kernel/svm/fractal_noise.h"
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#include "kernel/svm/util.h"
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CCL_NAMESPACE_BEGIN
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/* Wave */
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ccl_device_noinline_cpu float svm_wave(NodeWaveType type,
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NodeWaveBandsDirection bands_dir,
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NodeWaveRingsDirection rings_dir,
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NodeWaveProfile profile,
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float3 p,
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const float distortion,
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const float detail,
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const float dscale,
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const float droughness,
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const float phase)
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{
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/* Prevent precision issues on unit coordinates. */
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p = (p + 0.000001f) * 0.999999f;
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float n;
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if (type == NODE_WAVE_BANDS) {
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if (bands_dir == NODE_WAVE_BANDS_DIRECTION_X) {
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n = p.x * 20.0f;
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}
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else if (bands_dir == NODE_WAVE_BANDS_DIRECTION_Y) {
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n = p.y * 20.0f;
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}
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else if (bands_dir == NODE_WAVE_BANDS_DIRECTION_Z) {
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n = p.z * 20.0f;
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}
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else { /* NODE_WAVE_BANDS_DIRECTION_DIAGONAL */
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n = (p.x + p.y + p.z) * 10.0f;
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}
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}
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else { /* NODE_WAVE_RINGS */
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float3 rp = p;
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if (rings_dir == NODE_WAVE_RINGS_DIRECTION_X) {
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rp *= make_float3(0.0f, 1.0f, 1.0f);
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}
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else if (rings_dir == NODE_WAVE_RINGS_DIRECTION_Y) {
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rp *= make_float3(1.0f, 0.0f, 1.0f);
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}
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else if (rings_dir == NODE_WAVE_RINGS_DIRECTION_Z) {
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rp *= make_float3(1.0f, 1.0f, 0.0f);
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}
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/* else: NODE_WAVE_RINGS_DIRECTION_SPHERICAL */
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n = len(rp) * 20.0f;
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}
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n += phase;
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if (distortion != 0.0f) {
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n += distortion * (noise_fbm(p * dscale, detail, droughness, 2.0f, true) * 2.0f - 1.0f);
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}
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if (profile == NODE_WAVE_PROFILE_SIN) {
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return 0.5f + 0.5f * sinf(n - M_PI_2_F);
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}
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if (profile == NODE_WAVE_PROFILE_SAW) {
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n /= M_2PI_F;
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return n - floorf(n);
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}
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/* NODE_WAVE_PROFILE_TRI */
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n /= M_2PI_F;
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return fabsf(n - floorf(n + 0.5f)) * 2.0f;
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}
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ccl_device_noinline int svm_node_tex_wave(KernelGlobals kg,
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ccl_private ShaderData *sd,
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ccl_private float *stack,
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const uint4 node,
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int offset)
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{
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const uint4 node2 = read_node(kg, &offset);
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const uint4 node3 = read_node(kg, &offset);
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/* RNA properties */
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uint type_offset;
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uint bands_dir_offset;
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uint rings_dir_offset;
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uint profile_offset;
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/* Inputs, Outputs */
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uint co_offset;
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uint scale_offset;
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uint distortion_offset;
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uint detail_offset;
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uint dscale_offset;
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uint droughness_offset;
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uint phase_offset;
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uint color_offset;
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uint fac_offset;
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svm_unpack_node_uchar4(
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node.y, &type_offset, &bands_dir_offset, &rings_dir_offset, &profile_offset);
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svm_unpack_node_uchar3(node.z, &co_offset, &scale_offset, &distortion_offset);
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svm_unpack_node_uchar4(
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node.w, &detail_offset, &dscale_offset, &droughness_offset, &phase_offset);
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svm_unpack_node_uchar2(node2.x, &color_offset, &fac_offset);
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const float3 co = stack_load_float3(stack, co_offset);
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const float scale = stack_load_float_default(stack, scale_offset, node2.y);
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const float distortion = stack_load_float_default(stack, distortion_offset, node2.z);
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const float detail = stack_load_float_default(stack, detail_offset, node2.w);
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const float dscale = stack_load_float_default(stack, dscale_offset, node3.x);
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const float droughness = stack_load_float_default(stack, droughness_offset, node3.y);
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const float phase = stack_load_float_default(stack, phase_offset, node3.z);
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const float f = svm_wave((NodeWaveType)type_offset,
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(NodeWaveBandsDirection)bands_dir_offset,
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(NodeWaveRingsDirection)rings_dir_offset,
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(NodeWaveProfile)profile_offset,
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co * scale,
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distortion,
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detail,
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dscale,
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droughness,
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phase);
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if (stack_valid(fac_offset)) {
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stack_store_float(stack, fac_offset, f);
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}
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if (stack_valid(color_offset)) {
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stack_store_float3(stack, color_offset, make_float3(f, f, f));
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}
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return offset;
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}
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CCL_NAMESPACE_END
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