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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"
/* **************** Blackbody ******************** */
static bNodeSocketTemplate sh_node_blackbody_in[] = {
{SOCK_FLOAT, N_("Temperature"), 1500.0f, 0.0f, 0.0f, 0.0f, 800.0f, 12000.0f},
{-1, ""},
};
static bNodeSocketTemplate sh_node_blackbody_out[] = {
{SOCK_RGBA, N_("Color")},
{-1, ""},
};
static int node_shader_gpu_blackbody(GPUMaterial *mat,
bNode *node,
bNodeExecData *UNUSED(execdata),
GPUNodeStack *in,
GPUNodeStack *out)
{
const int size = CM_TABLE + 1;
float *data = MEM_mallocN(sizeof(float) * size * 4, "blackbody texture");
blackbody_temperature_to_rgb_table(data, size, 965.0f, 12000.0f);
float layer;
GPUNodeLink *ramp_texture = GPU_color_band(mat, size, data, &layer);
return GPU_stack_link(mat, node, "node_blackbody", in, out, ramp_texture, GPU_constant(&layer));
}
/* node type definition */
void register_node_type_sh_blackbody(void)
{
static bNodeType ntype;
sh_node_type_base(&ntype, SH_NODE_BLACKBODY, "Blackbody", NODE_CLASS_CONVERTER, 0);
node_type_size_preset(&ntype, NODE_SIZE_MIDDLE);
node_type_socket_templates(&ntype, sh_node_blackbody_in, sh_node_blackbody_out);
node_type_gpu(&ntype, node_shader_gpu_blackbody);
nodeRegisterType(&ntype);
}
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