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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_white_noise_declare(NodeDeclarationBuilder &b)
{
b.is_function_node();
b.add_input<decl::Vector>(N_("Vector")).min(-10000.0f).max(10000.0f).implicit_field();
b.add_input<decl::Float>(N_("W")).min(-10000.0f).max(10000.0f).make_available([](bNode &node) {
/* Default to 1 instead of 4, because it is faster. */
node.custom1 = 1;
});
b.add_output<decl::Float>(N_("Value"));
b.add_output<decl::Color>(N_("Color"));
};
} // namespace blender::nodes
static void node_shader_init_tex_white_noise(bNodeTree *UNUSED(ntree), bNode *node)
{
node->custom1 = 3;
}
static const char *gpu_shader_get_name(const int dimensions)
{
BLI_assert(dimensions >= 1 && dimensions <= 4);
return std::array{"node_white_noise_1d",
"node_white_noise_2d",
"node_white_noise_3d",
"node_white_noise_4d"}[dimensions - 1];
}
static int gpu_shader_tex_white_noise(GPUMaterial *mat,
bNode *node,
bNodeExecData *UNUSED(execdata),
GPUNodeStack *in,
GPUNodeStack *out)
{
const char *name = gpu_shader_get_name(node->custom1);
return GPU_stack_link(mat, node, name, in, out);
}
static void node_shader_update_tex_white_noise(bNodeTree *ntree, bNode *node)
{
bNodeSocket *sockVector = nodeFindSocket(node, SOCK_IN, "Vector");
bNodeSocket *sockW = nodeFindSocket(node, SOCK_IN, "W");
nodeSetSocketAvailability(ntree, sockVector, node->custom1 != 1);
nodeSetSocketAvailability(ntree, sockW, node->custom1 == 1 || node->custom1 == 4);
}
namespace blender::nodes {
class WhiteNoiseFunction : public fn::MultiFunction {
private:
int dimensions_;
public:
WhiteNoiseFunction(int dimensions) : dimensions_(dimensions)
{
BLI_assert(dimensions >= 1 && dimensions <= 4);
static std::array<fn::MFSignature, 4> signatures{
create_signature(1),
create_signature(2),
create_signature(3),
create_signature(4),
};
this->set_signature(&signatures[dimensions - 1]);
}
static fn::MFSignature create_signature(int dimensions)
{
fn::MFSignatureBuilder signature{"WhiteNoise"};
if (ELEM(dimensions, 2, 3, 4)) {
signature.single_input<float3>("Vector");
}
if (ELEM(dimensions, 1, 4)) {
signature.single_input<float>("W");
}
signature.single_output<float>("Value");
signature.single_output<ColorGeometry4f>("Color");
return signature.build();
}
void call(IndexMask mask, fn::MFParams params, fn::MFContext UNUSED(context)) const override
{
int param = ELEM(dimensions_, 2, 3, 4) + ELEM(dimensions_, 1, 4);
MutableSpan<float> r_value = params.uninitialized_single_output_if_required<float>(param++,
"Value");
MutableSpan<ColorGeometry4f> r_color =
params.uninitialized_single_output_if_required<ColorGeometry4f>(param++, "Color");
const bool compute_value = !r_value.is_empty();
const bool compute_color = !r_color.is_empty();
switch (dimensions_) {
case 1: {
const VArray<float> &w = params.readonly_single_input<float>(0, "W");
if (compute_color) {
for (int64_t i : mask) {
const float3 c = noise::hash_float_to_float3(w[i]);
r_color[i] = ColorGeometry4f(c[0], c[1], c[2], 1.0f);
}
}
if (compute_value) {
for (int64_t i : mask) {
r_value[i] = noise::hash_float_to_float(w[i]);
}
}
break;
}
case 2: {
const VArray<float3> &vector = params.readonly_single_input<float3>(0, "Vector");
if (compute_color) {
for (int64_t i : mask) {
const float3 c = noise::hash_float_to_float3(float2(vector[i].x, vector[i].y));
r_color[i] = ColorGeometry4f(c[0], c[1], c[2], 1.0f);
}
}
if (compute_value) {
for (int64_t i : mask) {
r_value[i] = noise::hash_float_to_float(float2(vector[i].x, vector[i].y));
}
}
break;
}
case 3: {
const VArray<float3> &vector = params.readonly_single_input<float3>(0, "Vector");
if (compute_color) {
for (int64_t i : mask) {
const float3 c = noise::hash_float_to_float3(vector[i]);
r_color[i] = ColorGeometry4f(c[0], c[1], c[2], 1.0f);
}
}
if (compute_value) {
for (int64_t i : mask) {
r_value[i] = noise::hash_float_to_float(vector[i]);
}
}
break;
}
case 4: {
const VArray<float3> &vector = params.readonly_single_input<float3>(0, "Vector");
const VArray<float> &w = params.readonly_single_input<float>(1, "W");
if (compute_color) {
for (int64_t i : mask) {
const float3 c = noise::hash_float_to_float3(
float4(vector[i].x, vector[i].y, vector[i].z, w[i]));
r_color[i] = ColorGeometry4f(c[0], c[1], c[2], 1.0f);
}
}
if (compute_value) {
for (int64_t i : mask) {
r_value[i] = noise::hash_float_to_float(
float4(vector[i].x, vector[i].y, vector[i].z, w[i]));
}
}
break;
}
}
}
};
static void sh_node_noise_build_multi_function(blender::nodes::NodeMultiFunctionBuilder &builder)
{
bNode &node = builder.node();
builder.construct_and_set_matching_fn<WhiteNoiseFunction>((int)node.custom1);
}
} // namespace blender::nodes
void register_node_type_sh_tex_white_noise()
{
static bNodeType ntype;
sh_fn_node_type_base(
&ntype, SH_NODE_TEX_WHITE_NOISE, "White Noise Texture", NODE_CLASS_TEXTURE, 0);
ntype.declare = blender::nodes::sh_node_tex_white_noise_declare;
node_type_init(&ntype, node_shader_init_tex_white_noise);
node_type_gpu(&ntype, gpu_shader_tex_white_noise);
node_type_update(&ntype, node_shader_update_tex_white_noise);
ntype.build_multi_function = blender::nodes::sh_node_noise_build_multi_function;
nodeRegisterType(&ntype);
}
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