/*
 * ***** 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_bsdf_anisotropic_in[] = {
	{	SOCK_RGBA, 1, N_("Color"),			0.8f, 0.8f, 0.8f, 1.0f, 0.0f, 1.0f},
	{	SOCK_FLOAT, 1, N_("Roughness"),	    0.2f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, PROP_FACTOR},
	{	SOCK_FLOAT, 1, N_("Anisotropy"),	0.5f, 0.0f, 0.0f, 0.0f, -1.0f, 1.0f},
	{	SOCK_FLOAT, 1, N_("Rotation"),		0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, PROP_FACTOR},
	{	SOCK_VECTOR, 1, N_("Normal"),		0.0f, 0.0f, 0.0f, 1.0f, -1.0f, 1.0f, PROP_NONE, SOCK_HIDE_VALUE},
	{	SOCK_VECTOR, 1, N_("Tangent"),		0.0f, 0.0f, 0.0f, 1.0f, -1.0f, 1.0f, PROP_NONE, SOCK_HIDE_VALUE},
	{	-1, 0, ""	}
};

static bNodeSocketTemplate sh_node_bsdf_anisotropic_out[] = {
	{	SOCK_SHADER, 0, N_("BSDF")},
	{	-1, 0, ""	}
};

static void node_shader_init_anisotropic(bNodeTree *UNUSED(ntree), bNode *node)
{
	node->custom1 = SHD_GLOSSY_GGX;
}

static int node_shader_gpu_bsdf_anisotropic(GPUMaterial *mat, bNode *UNUSED(node), bNodeExecData *UNUSED(execdata), GPUNodeStack *in, GPUNodeStack *out)
{
	if (!in[4].link)
		in[4].link = GPU_builtin(GPU_VIEW_NORMAL);
	else
		GPU_link(mat, "direction_transform_m4v3", in[4].link, GPU_builtin(GPU_VIEW_MATRIX), &in[4].link);

	return GPU_stack_link(mat, "node_bsdf_anisotropic", in, out);
}

/* node type definition */
void register_node_type_sh_bsdf_anisotropic(void)
{
	static bNodeType ntype;

	sh_node_type_base(&ntype, SH_NODE_BSDF_ANISOTROPIC, "Anisotropic BSDF", NODE_CLASS_SHADER, 0);
	node_type_compatibility(&ntype, NODE_NEW_SHADING);
	node_type_socket_templates(&ntype, sh_node_bsdf_anisotropic_in, sh_node_bsdf_anisotropic_out);
	node_type_size_preset(&ntype, NODE_SIZE_MIDDLE);
	node_type_init(&ntype, node_shader_init_anisotropic);
	node_type_storage(&ntype, "", NULL, NULL);
	node_type_gpu(&ntype, node_shader_gpu_bsdf_anisotropic);

	nodeRegisterType(&ntype);
}
