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/**
* $Id$
*
* ***** 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 "../SHD_util.h"
/* **************** NORMAL ******************** */
static bNodeSocketType sh_node_normal_in[]= {
{ SOCK_VECTOR, 1, "Normal", 0.0f, 0.0f, 0.0f, 1.0f, -1.0f, 1.0f},
{ -1, 0, "" }
};
static bNodeSocketType sh_node_normal_out[]= {
{ SOCK_VECTOR, 0, "Normal", 0.0f, 0.0f, 1.0f, 1.0f, -1.0f, 1.0f},
{ SOCK_VALUE, 0, "Dot", 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f},
{ -1, 0, "" }
};
/* generates normal, does dot product */
static void node_shader_exec_normal(void *data, bNode *node, bNodeStack **in, bNodeStack **out)
{
bNodeSocket *sock= node->outputs.first;
float vec[3];
/* stack order input: normal */
/* stack order output: normal, value */
nodestack_get_vec(vec, SOCK_VECTOR, in[0]);
VECCOPY(out[0]->vec, sock->ns.vec);
/* render normals point inside... the widget points outside */
out[1]->vec[0]= -INPR(out[0]->vec, vec);
}
static int gpu_shader_normal(GPUMaterial *mat, bNode *node, GPUNodeStack *in, GPUNodeStack *out)
{
bNodeSocket *sock= node->outputs.first;
GPUNodeLink *vec = GPU_uniform(sock->ns.vec);
return GPU_stack_link(mat, "normal", in, out, vec);
}
bNodeType sh_node_normal= {
/* *next,*prev */ NULL, NULL,
/* type code */ SH_NODE_NORMAL,
/* name */ "Normal",
/* width+range */ 100, 60, 200,
/* class+opts */ NODE_CLASS_OP_VECTOR, NODE_OPTIONS,
/* input sock */ sh_node_normal_in,
/* output sock */ sh_node_normal_out,
/* storage */ "",
/* execfunc */ node_shader_exec_normal,
/* butfunc */ NULL,
/* initfunc */ NULL,
/* freestoragefunc */ NULL,
/* copystoragefunc */ NULL,
/* id */ NULL, NULL, NULL,
/* gpufunc */ gpu_shader_normal
};
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