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/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2005 Blender Foundation.
* All rights reserved.
*/
#include "../node_shader_util.h"
#include "BLI_noise.hh"
namespace blender::nodes {
static void sh_node_tex_wave_declare(NodeDeclarationBuilder &b)
{
b.is_function_node();
b.add_input<decl::Vector>(N_("Vector")).implicit_field();
b.add_input<decl::Float>(N_("Scale")).min(-1000.0f).max(1000.0f).default_value(5.0f);
b.add_input<decl::Float>(N_("Distortion")).min(-1000.0f).max(1000.0f).default_value(0.0f);
b.add_input<decl::Float>(N_("Detail")).min(0.0f).max(16.0f).default_value(2.0f);
b.add_input<decl::Float>(N_("Detail Scale")).min(-1000.0f).max(1000.0f).default_value(1.0f);
b.add_input<decl::Float>(N_("Detail Roughness"))
.min(0.0f)
.max(1.0f)
.default_value(0.5f)
.subtype(PROP_FACTOR);
b.add_input<decl::Float>(N_("Phase Offset")).min(-1000.0f).max(1000.0f).default_value(0.0f);
b.add_output<decl::Color>(N_("Color")).no_muted_links();
b.add_output<decl::Float>(N_("Fac")).no_muted_links();
};
} // namespace blender::nodes
static void node_shader_init_tex_wave(bNodeTree *UNUSED(ntree), bNode *node)
{
NodeTexWave *tex = (NodeTexWave *)MEM_callocN(sizeof(NodeTexWave), "NodeTexWave");
BKE_texture_mapping_default(&tex->base.tex_mapping, TEXMAP_TYPE_POINT);
BKE_texture_colormapping_default(&tex->base.color_mapping);
tex->wave_type = SHD_WAVE_BANDS;
tex->bands_direction = SHD_WAVE_BANDS_DIRECTION_X;
tex->rings_direction = SHD_WAVE_RINGS_DIRECTION_X;
tex->wave_profile = SHD_WAVE_PROFILE_SIN;
node->storage = tex;
}
static int node_shader_gpu_tex_wave(GPUMaterial *mat,
bNode *node,
bNodeExecData *UNUSED(execdata),
GPUNodeStack *in,
GPUNodeStack *out)
{
node_shader_gpu_default_tex_coord(mat, node, &in[0].link);
node_shader_gpu_tex_mapping(mat, node, in, out);
NodeTexWave *tex = (NodeTexWave *)node->storage;
float wave_type = tex->wave_type;
float bands_direction = tex->bands_direction;
float rings_direction = tex->rings_direction;
float wave_profile = tex->wave_profile;
return GPU_stack_link(mat,
node,
"node_tex_wave",
in,
out,
GPU_constant(&wave_type),
GPU_constant(&bands_direction),
GPU_constant(&rings_direction),
GPU_constant(&wave_profile));
}
namespace blender::nodes {
class WaveFunction : public fn::MultiFunction {
private:
int wave_type_;
int bands_direction_;
int rings_direction_;
int wave_profile_;
public:
WaveFunction(int wave_type, int bands_direction, int rings_direction, int wave_profile)
: wave_type_(wave_type),
bands_direction_(bands_direction),
rings_direction_(rings_direction),
wave_profile_(wave_profile)
{
static fn::MFSignature signature = create_signature();
this->set_signature(&signature);
}
static fn::MFSignature create_signature()
{
fn::MFSignatureBuilder signature{"MagicFunction"};
signature.single_input<float3>("Vector");
signature.single_input<float>("Scale");
signature.single_input<float>("Distortion");
signature.single_input<float>("Detail");
signature.single_input<float>("Detail Scale");
signature.single_input<float>("Detail Roughness");
signature.single_input<float>("Phase Offset");
signature.single_output<ColorGeometry4f>("Color");
signature.single_output<float>("Fac");
return signature.build();
}
void call(IndexMask mask, fn::MFParams params, fn::MFContext UNUSED(context)) const override
{
const VArray<float3> &vector = params.readonly_single_input<float3>(0, "Vector");
const VArray<float> &scale = params.readonly_single_input<float>(1, "Scale");
const VArray<float> &distortion = params.readonly_single_input<float>(2, "Distortion");
const VArray<float> &detail = params.readonly_single_input<float>(3, "Detail");
const VArray<float> &dscale = params.readonly_single_input<float>(4, "Detail Scale");
const VArray<float> &droughness = params.readonly_single_input<float>(5, "Detail Roughness");
const VArray<float> &phase = params.readonly_single_input<float>(6, "Phase Offset");
MutableSpan<ColorGeometry4f> r_color =
params.uninitialized_single_output_if_required<ColorGeometry4f>(7, "Color");
MutableSpan<float> r_fac = params.uninitialized_single_output<float>(8, "Fac");
for (int64_t i : mask) {
float3 p = vector[i] * scale[i];
/* Prevent precision issues on unit coordinates. */
p = (p + 0.000001f) * 0.999999f;
float n = 0.0f;
float val = 0.0f;
switch (wave_type_) {
case SHD_WAVE_BANDS:
switch (bands_direction_) {
case SHD_WAVE_BANDS_DIRECTION_X:
n = p.x * 20.0f;
break;
case SHD_WAVE_BANDS_DIRECTION_Y:
n = p.y * 20.0f;
break;
case SHD_WAVE_BANDS_DIRECTION_Z:
n = p.z * 20.0f;
break;
case SHD_WAVE_BANDS_DIRECTION_DIAGONAL:
n = (p.x + p.y + p.z) * 10.0f;
break;
}
break;
case SHD_WAVE_RINGS:
float3 rp = p;
switch (rings_direction_) {
case SHD_WAVE_RINGS_DIRECTION_X:
rp *= float3(0.0f, 1.0f, 1.0f);
break;
case SHD_WAVE_RINGS_DIRECTION_Y:
rp *= float3(1.0f, 0.0f, 1.0f);
break;
case SHD_WAVE_RINGS_DIRECTION_Z:
rp *= float3(1.0f, 1.0f, 0.0f);
break;
case SHD_WAVE_RINGS_DIRECTION_SPHERICAL:
/* Ignore. */
break;
}
n = len_v3(rp) * 20.0f;
break;
}
n += phase[i];
if (distortion[i] != 0.0f) {
n += distortion[i] *
(noise::perlin_fractal(p * dscale[i], detail[i], droughness[i]) * 2.0f - 1.0f);
}
switch (wave_profile_) {
case SHD_WAVE_PROFILE_SIN:
val = 0.5f + 0.5f * sinf(n - M_PI_2);
break;
case SHD_WAVE_PROFILE_SAW:
n /= M_PI * 2.0f;
val = n - floorf(n);
break;
case SHD_WAVE_PROFILE_TRI:
n /= M_PI * 2.0f;
val = fabsf(n - floorf(n + 0.5f)) * 2.0f;
break;
}
r_fac[i] = val;
}
if (!r_color.is_empty()) {
for (int64_t i : mask) {
r_color[i] = ColorGeometry4f(r_fac[i], r_fac[i], r_fac[i], 1.0f);
}
}
}
};
static void sh_node_wave_tex_build_multi_function(
blender::nodes::NodeMultiFunctionBuilder &builder)
{
bNode &node = builder.node();
NodeTexWave *tex = (NodeTexWave *)node.storage;
builder.construct_and_set_matching_fn<WaveFunction>(
tex->wave_type, tex->bands_direction, tex->rings_direction, tex->wave_profile);
}
} // namespace blender::nodes
void register_node_type_sh_tex_wave(void)
{
static bNodeType ntype;
sh_fn_node_type_base(&ntype, SH_NODE_TEX_WAVE, "Wave Texture", NODE_CLASS_TEXTURE, 0);
ntype.declare = blender::nodes::sh_node_tex_wave_declare;
node_type_size_preset(&ntype, NODE_SIZE_MIDDLE);
node_type_init(&ntype, node_shader_init_tex_wave);
node_type_storage(&ntype, "NodeTexWave", node_free_standard_storage, node_copy_standard_storage);
node_type_gpu(&ntype, node_shader_gpu_tex_wave);
ntype.build_multi_function = blender::nodes::sh_node_wave_tex_build_multi_function;
nodeRegisterType(&ntype);
}
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