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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* 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.
*
* The Original Code is: all of this file.
*
* Contributor(s): none yet.
*
* ***** END GPL LICENSE BLOCK *****
*/
#include "../node_shader_util.h"
/* **************** OUTPUT ******************** */
static bNodeSocketTemplate sh_node_volume_principled_in[] = {
{ SOCK_RGBA, 1, N_("Color"), 0.5f, 0.5f, 0.5f, 1.0f, 0.0f, 1.0f},
{ SOCK_STRING, 1, N_("Color Attribute"), 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f},
{ SOCK_FLOAT, 1, N_("Density"), 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1000.0f},
{ SOCK_STRING, 1, N_("Density Attribute"), 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f},
{ SOCK_FLOAT, 1, N_("Anisotropy"), 0.0f, 0.0f, 0.0f, 0.0f, -1.0f, 1.0f, PROP_FACTOR},
{ SOCK_RGBA, 1, N_("Absorption Color"), 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f},
{ SOCK_FLOAT, 1, N_("Emission Strength"), 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1000.0f},
{ SOCK_RGBA, 1, N_("Emission Color"), 1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f},
{ SOCK_FLOAT, 1, N_("Blackbody Intensity"), 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, PROP_FACTOR},
{ SOCK_RGBA, 1, N_("Blackbody Tint"), 1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f},
{ SOCK_FLOAT, 1, N_("Temperature"), 1000.0f, 0.0f, 0.0f, 0.0f, 0.0f, 6500.0f},
{ SOCK_STRING, 1, N_("Temperature Attribute"), 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f},
{ -1, 0, "" }
};
static bNodeSocketTemplate sh_node_volume_principled_out[] = {
{ SOCK_SHADER, 0, N_("Volume")},
{ -1, 0, "" }
};
static void node_shader_init_volume_principled(bNodeTree *UNUSED(ntree), bNode *node)
{
for (bNodeSocket *sock = node->inputs.first; sock; sock = sock->next) {
if (STREQ(sock->name, "Density Attribute")) {
strcpy(((bNodeSocketValueString *)sock->default_value)->value, "density");
}
else if (STREQ(sock->name, "Temperature Attribute")) {
strcpy(((bNodeSocketValueString *)sock->default_value)->value, "temperature");
}
}
}
static void node_shader_gpu_volume_attribute(GPUMaterial *mat, const char *name, GPUNodeLink **outcol, GPUNodeLink **outvec, GPUNodeLink **outf)
{
if (strcmp(name, "density") == 0) {
GPU_link(mat, "node_attribute_volume_density",
GPU_builtin(GPU_VOLUME_DENSITY),
outcol, outvec, outf);
}
else if (strcmp(name, "color") == 0) {
GPU_link(mat, "node_attribute_volume_color",
GPU_builtin(GPU_VOLUME_DENSITY),
outcol, outvec, outf);
}
else if (strcmp(name, "flame") == 0) {
GPU_link(mat, "node_attribute_volume_flame",
GPU_builtin(GPU_VOLUME_FLAME),
outcol, outvec, outf);
}
else if (strcmp(name, "temperature") == 0) {
GPU_link(mat, "node_attribute_volume_temperature",
GPU_builtin(GPU_VOLUME_FLAME),
GPU_builtin(GPU_VOLUME_TEMPERATURE),
outcol, outvec, outf);
}
else {
*outcol = *outvec = *outf = NULL;
}
}
static int node_shader_gpu_volume_principled(GPUMaterial *mat, bNode *node, bNodeExecData *UNUSED(execdata), GPUNodeStack *in, GPUNodeStack *out)
{
/* Test if blackbody intensity is enabled. */
bool use_blackbody = (in[8].link || in[8].vec[0] != 0.0f);
/* Get volume attributes. */
GPUNodeLink *density = NULL, *color = NULL, *temperature = NULL;
for (bNodeSocket *sock = node->inputs.first; sock; sock = sock->next) {
if (sock->typeinfo->type != SOCK_STRING) {
continue;
}
bNodeSocketValueString *value = sock->default_value;
GPUNodeLink *outcol, *outvec, *outf;
if (STREQ(sock->name, "Density Attribute")) {
node_shader_gpu_volume_attribute(mat, value->value, &outcol, &outvec, &density);
}
else if (STREQ(sock->name, "Color Attribute")) {
node_shader_gpu_volume_attribute(mat, value->value, &color, &outvec, &outf);
}
else if (use_blackbody && STREQ(sock->name, "Temperature Attribute")) {
node_shader_gpu_volume_attribute(mat, value->value, &outcol, &outvec, &temperature);
}
}
/* Default values if attributes not found. */
if (!density) {
static float one = 1.0f;
density = GPU_uniform(&one);
}
if (!color) {
static float white[4] = {1.0f, 1.0f, 1.0f, 1.0f};
color = GPU_uniform(white);
}
if (!temperature) {
static float one = 1.0f;
temperature = GPU_uniform(&one);
}
/* Create blackbody spectrum. */
GPUNodeLink *spectrummap;
if (use_blackbody) {
const int size = 256;
float *data = MEM_mallocN(sizeof(float) * size * 4, "blackbody texture");
blackbody_temperature_to_rgb_table(data, size, 965.0f, 12000.0f);
spectrummap = GPU_texture(size, data);
}
else {
float *data = MEM_callocN(sizeof(float) * 4, "blackbody black");
spectrummap = GPU_texture(1, data);
}
return GPU_stack_link(mat, node, "node_volume_principled", in, out, density, color, temperature, spectrummap);
}
/* node type definition */
void register_node_type_sh_volume_principled(void)
{
static bNodeType ntype;
sh_node_type_base(&ntype, SH_NODE_VOLUME_PRINCIPLED, "Principled Volume", NODE_CLASS_SHADER, 0);
node_type_socket_templates(&ntype, sh_node_volume_principled_in, sh_node_volume_principled_out);
node_type_size_preset(&ntype, NODE_SIZE_LARGE);
node_type_init(&ntype, node_shader_init_volume_principled);
node_type_storage(&ntype, "", NULL, NULL);
node_type_gpu(&ntype, node_shader_gpu_volume_principled);
nodeRegisterType(&ntype);
}
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