node_shader_geometry.c

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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_geometry_out[]= {
    {   SOCK_VECTOR, 0, "Position",         0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f},
    {   SOCK_VECTOR, 0, "Normal",           0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f},
    {   SOCK_VECTOR, 0, "Tangent",          0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f},
    {   SOCK_VECTOR, 0, "True Normal",      0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f},
    {   SOCK_VECTOR, 0, "Incoming",         0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f},
    {   SOCK_VECTOR, 0, "Parametric",       0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f},
    {   SOCK_FLOAT,  0, "Backfacing",       0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f},
    {   -1, 0, ""   }
};

static int node_shader_gpu_geometry(GPUMaterial *mat, bNode *UNUSED(node), GPUNodeStack *in, GPUNodeStack *out)
{
    return GPU_stack_link(mat, "node_geometry", in, out,
        GPU_builtin(GPU_VIEW_POSITION), GPU_builtin(GPU_VIEW_NORMAL),
        GPU_builtin(GPU_INVERSE_VIEW_MATRIX));
}

/* node type definition */
void register_node_type_sh_geometry(bNodeTreeType *ttype)
{
    static bNodeType ntype;

    node_type_base(ttype, &ntype, SH_NODE_NEW_GEOMETRY, "Geometry", NODE_CLASS_INPUT, 0);
    node_type_compatibility(&ntype, NODE_NEW_SHADING);
    node_type_socket_templates(&ntype, NULL, sh_node_geometry_out);
    node_type_size(&ntype, 120, 60, 200);
    node_type_init(&ntype, NULL);
    node_type_storage(&ntype, "", NULL, NULL);
    node_type_exec(&ntype, NULL);
    node_type_gpu(&ntype, node_shader_gpu_geometry);

    nodeRegisterType(ttype, &ntype);
}