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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) 2006 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"
/* **************** Gamma Tools ******************** */
static bNodeSocketTemplate sh_node_gamma_in[] = {
{ SOCK_RGBA, 1, N_("Color"), 1.0f, 1.0f, 1.0f, 1.0f},
{ SOCK_FLOAT, 1, N_("Gamma"), 1.0f, 0.0f, 0.0f, 0.0f, 0.001f, 10.0f, PROP_UNSIGNED},
{ -1, 0, "" }
};
static bNodeSocketTemplate sh_node_gamma_out[] = {
{ SOCK_RGBA, 0, N_("Color")},
{ -1, 0, "" }
};
static void node_shader_exec_gamma(void *UNUSED(data), int UNUSED(thread), bNode *UNUSED(node), bNodeExecData *UNUSED(execdata), bNodeStack **in, bNodeStack **out)
{
float col[3];
float gamma;
nodestack_get_vec(col, SOCK_VECTOR, in[0]);
nodestack_get_vec(&gamma, SOCK_FLOAT, in[1]);
out[0]->vec[0] = col[0] > 0.0f ? powf(col[0], gamma) : col[0];
out[0]->vec[1] = col[1] > 0.0f ? powf(col[1], gamma) : col[1];
out[0]->vec[2] = col[2] > 0.0f ? powf(col[2], gamma) : col[2];
}
static int node_shader_gpu_gamma(GPUMaterial *mat, bNode *node, bNodeExecData *UNUSED(execdata), GPUNodeStack *in, GPUNodeStack *out)
{
return GPU_stack_link(mat, node, "node_gamma", in, out);
}
void register_node_type_sh_gamma(void)
{
static bNodeType ntype;
sh_node_type_base(&ntype, SH_NODE_GAMMA, "Gamma", NODE_CLASS_OP_COLOR, 0);
node_type_socket_templates(&ntype, sh_node_gamma_in, sh_node_gamma_out);
node_type_init(&ntype, NULL);
node_type_storage(&ntype, "", NULL, NULL);
node_type_exec(&ntype, NULL, NULL, node_shader_exec_gamma);
node_type_gpu(&ntype, node_shader_gpu_gamma);
nodeRegisterType(&ntype);
}
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