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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"
/* **************** Fresnel ******************** */
static bNodeSocketTemplate sh_node_fresnel_in[] = {
{SOCK_FLOAT, N_("IOR"), 1.45f, 0.0f, 0.0f, 0.0f, 0.0f, 1000.0f},
{SOCK_VECTOR, N_("Normal"), 0.0f, 0.0f, 0.0f, 1.0f, -1.0f, 1.0f, PROP_NONE, SOCK_HIDE_VALUE},
{-1, ""},
};
static bNodeSocketTemplate sh_node_fresnel_out[] = {
{SOCK_FLOAT, N_("Fac"), 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, PROP_FACTOR},
{-1, ""},
};
static int node_shader_gpu_fresnel(GPUMaterial *mat,
bNode *node,
bNodeExecData *UNUSED(execdata),
GPUNodeStack *in,
GPUNodeStack *out)
{
if (!in[1].link) {
in[1].link = GPU_builtin(GPU_VIEW_NORMAL);
}
else {
GPU_link(
mat, "direction_transform_m4v3", in[1].link, GPU_builtin(GPU_VIEW_MATRIX), &in[1].link);
}
return GPU_stack_link(mat, node, "node_fresnel", in, out, GPU_builtin(GPU_VIEW_POSITION));
}
static void node_shader_exec_fresnel(void *UNUSED(data),
int UNUSED(thread),
bNode *UNUSED(node),
bNodeExecData *UNUSED(execdata),
bNodeStack **UNUSED(in),
bNodeStack **UNUSED(out))
{
}
/* node type definition */
void register_node_type_sh_fresnel(void)
{
static bNodeType ntype;
sh_node_type_base(&ntype, SH_NODE_FRESNEL, "Fresnel", NODE_CLASS_INPUT, 0);
node_type_socket_templates(&ntype, sh_node_fresnel_in, sh_node_fresnel_out);
node_type_gpu(&ntype, node_shader_gpu_fresnel);
node_type_exec(&ntype, NULL, NULL, node_shader_exec_fresnel);
nodeRegisterType(&ntype);
}
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