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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2005 Blender Foundation. All rights reserved. */
#include "node_shader_util.hh"
#include "UI_interface.h"
#include "UI_resources.h"
namespace blender::nodes::node_shader_tex_magic_cc {
static void sh_node_tex_magic_declare(NodeDeclarationBuilder &b)
{
b.is_function_node();
b.add_input<decl::Vector>(N_("Vector")).implicit_field(implicit_field_inputs::position);
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(1.0f);
b.add_output<decl::Color>(N_("Color")).no_muted_links();
b.add_output<decl::Float>(N_("Fac")).no_muted_links();
}
static void node_shader_buts_tex_magic(uiLayout *layout, bContext * /*C*/, PointerRNA *ptr)
{
uiItemR(layout, ptr, "turbulence_depth", UI_ITEM_R_SPLIT_EMPTY_NAME, nullptr, ICON_NONE);
}
static void node_shader_init_tex_magic(bNodeTree * /*ntree*/, bNode *node)
{
NodeTexMagic *tex = MEM_cnew<NodeTexMagic>(__func__);
BKE_texture_mapping_default(&tex->base.tex_mapping, TEXMAP_TYPE_POINT);
BKE_texture_colormapping_default(&tex->base.color_mapping);
tex->depth = 2;
node->storage = tex;
}
static int node_shader_gpu_tex_magic(GPUMaterial *mat,
bNode *node,
bNodeExecData * /*execdata*/,
GPUNodeStack *in,
GPUNodeStack *out)
{
NodeTexMagic *tex = (NodeTexMagic *)node->storage;
float depth = tex->depth;
node_shader_gpu_default_tex_coord(mat, node, &in[0].link);
node_shader_gpu_tex_mapping(mat, node, in, out);
return GPU_stack_link(mat, node, "node_tex_magic", in, out, GPU_constant(&depth));
}
class MagicFunction : public fn::MultiFunction {
private:
int depth_;
public:
MagicFunction(int depth) : depth_(depth)
{
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_output<ColorGeometry4f>("Color");
signature.single_output<float>("Fac");
return signature.build();
}
void call(IndexMask mask, fn::MFParams params, fn::MFContext /*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");
MutableSpan<ColorGeometry4f> r_color = params.uninitialized_single_output<ColorGeometry4f>(
3, "Color");
MutableSpan<float> r_fac = params.uninitialized_single_output_if_required<float>(4, "Fac");
const bool compute_factor = !r_fac.is_empty();
for (int64_t i : mask) {
const float3 co = vector[i] * scale[i];
const float distort = distortion[i];
float x = sinf((co[0] + co[1] + co[2]) * 5.0f);
float y = cosf((-co[0] + co[1] - co[2]) * 5.0f);
float z = -cosf((-co[0] - co[1] + co[2]) * 5.0f);
if (depth_ > 0) {
x *= distort;
y *= distort;
z *= distort;
y = -cosf(x - y + z);
y *= distort;
if (depth_ > 1) {
x = cosf(x - y - z);
x *= distort;
if (depth_ > 2) {
z = sinf(-x - y - z);
z *= distort;
if (depth_ > 3) {
x = -cosf(-x + y - z);
x *= distort;
if (depth_ > 4) {
y = -sinf(-x + y + z);
y *= distort;
if (depth_ > 5) {
y = -cosf(-x + y + z);
y *= distort;
if (depth_ > 6) {
x = cosf(x + y + z);
x *= distort;
if (depth_ > 7) {
z = sinf(x + y - z);
z *= distort;
if (depth_ > 8) {
x = -cosf(-x - y + z);
x *= distort;
if (depth_ > 9) {
y = -sinf(x - y + z);
y *= distort;
}
}
}
}
}
}
}
}
}
}
if (distort != 0.0f) {
const float d = distort * 2.0f;
x /= d;
y /= d;
z /= d;
}
r_color[i] = ColorGeometry4f(0.5f - x, 0.5f - y, 0.5f - z, 1.0f);
}
if (compute_factor) {
for (int64_t i : mask) {
r_fac[i] = (r_color[i].r + r_color[i].g + r_color[i].b) * (1.0f / 3.0f);
}
}
}
};
static void sh_node_magic_tex_build_multi_function(NodeMultiFunctionBuilder &builder)
{
const bNode &node = builder.node();
NodeTexMagic *tex = (NodeTexMagic *)node.storage;
builder.construct_and_set_matching_fn<MagicFunction>(tex->depth);
}
} // namespace blender::nodes::node_shader_tex_magic_cc
void register_node_type_sh_tex_magic()
{
namespace file_ns = blender::nodes::node_shader_tex_magic_cc;
static bNodeType ntype;
sh_fn_node_type_base(&ntype, SH_NODE_TEX_MAGIC, "Magic Texture", NODE_CLASS_TEXTURE);
ntype.declare = file_ns::sh_node_tex_magic_declare;
ntype.draw_buttons = file_ns::node_shader_buts_tex_magic;
ntype.initfunc = file_ns::node_shader_init_tex_magic;
node_type_storage(
&ntype, "NodeTexMagic", node_free_standard_storage, node_copy_standard_storage);
ntype.gpu_fn = file_ns::node_shader_gpu_tex_magic;
ntype.build_multi_function = file_ns::sh_node_magic_tex_build_multi_function;
nodeRegisterType(&ntype);
}
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