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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"
/* **************** OUTPUT ******************** */
static bNodeSocketTemplate sh_node_normal_map_in[] = {
{SOCK_FLOAT, 1, N_("Strength"), 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 10.0f},
{SOCK_RGBA, 1, N_("Color"), 0.5f, 0.5f, 1.0f, 1.0f, 0.0f, 1.0f},
{-1, 0, ""},
};
static bNodeSocketTemplate sh_node_normal_map_out[] = {
{SOCK_VECTOR, 0, N_("Normal"), 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f},
{-1, 0, ""},
};
static void node_shader_init_normal_map(bNodeTree *UNUSED(ntree), bNode *node)
{
NodeShaderNormalMap *attr = MEM_callocN(sizeof(NodeShaderNormalMap), "NodeShaderNormalMap");
node->storage = attr;
}
static void node_shader_exec_normal_map(void *UNUSED(data),
int UNUSED(thread),
bNode *UNUSED(node),
bNodeExecData *UNUSED(execdata),
bNodeStack **UNUSED(in),
bNodeStack **UNUSED(out))
{
}
static int gpu_shader_normal_map(GPUMaterial *mat,
bNode *node,
bNodeExecData *UNUSED(execdata),
GPUNodeStack *in,
GPUNodeStack *out)
{
NodeShaderNormalMap *nm = node->storage;
GPUNodeLink *strength;
if (in[0].link) {
strength = in[0].link;
}
else if (node->original) {
bNodeSocket *socket = BLI_findlink(&node->original->inputs, 0);
bNodeSocketValueFloat *socket_data = socket->default_value;
strength = GPU_uniform(&socket_data->value);
}
else {
strength = GPU_constant(in[0].vec);
}
GPUNodeLink *newnormal;
if (in[1].link) {
newnormal = in[1].link;
}
else if (node->original) {
bNodeSocket *socket = BLI_findlink(&node->original->inputs, 1);
bNodeSocketValueRGBA *socket_data = socket->default_value;
newnormal = GPU_uniform(socket_data->value);
}
else {
newnormal = GPU_constant(in[1].vec);
}
const char *color_to_normal_fnc_name = "color_to_normal_new_shading";
if (nm->space == SHD_SPACE_BLENDER_OBJECT || nm->space == SHD_SPACE_BLENDER_WORLD) {
color_to_normal_fnc_name = "color_to_blender_normal_new_shading";
}
GPU_link(mat, color_to_normal_fnc_name, newnormal, &newnormal);
switch (nm->space) {
case SHD_SPACE_TANGENT:
GPU_link(mat,
"node_normal_map",
GPU_builtin(GPU_OBJECT_INFO),
GPU_attribute(mat, CD_TANGENT, nm->uv_map),
GPU_builtin(GPU_WORLD_NORMAL),
newnormal,
&newnormal);
break;
case SHD_SPACE_OBJECT:
case SHD_SPACE_BLENDER_OBJECT:
GPU_link(
mat, "direction_transform_m4v3", newnormal, GPU_builtin(GPU_OBJECT_MATRIX), &newnormal);
break;
case SHD_SPACE_WORLD:
case SHD_SPACE_BLENDER_WORLD:
/* Nothing to do. */
break;
}
GPUNodeLink *oldnormal = GPU_builtin(GPU_WORLD_NORMAL);
GPU_link(mat, "node_normal_map_mix", strength, newnormal, oldnormal, &out[0].link);
return true;
}
/* node type definition */
void register_node_type_sh_normal_map(void)
{
static bNodeType ntype;
sh_node_type_base(&ntype, SH_NODE_NORMAL_MAP, "Normal Map", NODE_CLASS_OP_VECTOR, 0);
node_type_socket_templates(&ntype, sh_node_normal_map_in, sh_node_normal_map_out);
node_type_size_preset(&ntype, NODE_SIZE_MIDDLE);
node_type_init(&ntype, node_shader_init_normal_map);
node_type_storage(
&ntype, "NodeShaderNormalMap", node_free_standard_storage, node_copy_standard_storage);
node_type_gpu(&ntype, gpu_shader_normal_map);
node_type_exec(&ntype, NULL, NULL, node_shader_exec_normal_map);
nodeRegisterType(&ntype);
}
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