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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.
*/
/** \file
* \ingroup shdnodes
*/
#include "IMB_colormanagement.h"
#include "node_shader_util.hh"
namespace blender::nodes::node_shader_rgb_to_bw_cc {
static void sh_node_rgbtobw_declare(NodeDeclarationBuilder &b)
{
b.add_input<decl::Color>(N_("Color")).default_value({0.5f, 0.5f, 0.5f, 1.0f});
b.add_output<decl::Float>(N_("Val"));
};
static void node_shader_exec_rgbtobw(void *UNUSED(data),
int UNUSED(thread),
bNode *UNUSED(node),
bNodeExecData *UNUSED(execdata),
bNodeStack **in,
bNodeStack **out)
{
/* Stack order out: BW. */
/* Stack order in: COL. */
float col[3];
nodestack_get_vec(col, SOCK_VECTOR, in[0]);
out[0]->vec[0] = IMB_colormanagement_get_luminance(col);
}
static int gpu_shader_rgbtobw(GPUMaterial *mat,
bNode *node,
bNodeExecData *UNUSED(execdata),
GPUNodeStack *in,
GPUNodeStack *out)
{
return GPU_stack_link(mat, node, "rgbtobw", in, out);
}
} // namespace blender::nodes::node_shader_rgb_to_bw_cc
void register_node_type_sh_rgbtobw()
{
namespace file_ns = blender::nodes::node_shader_rgb_to_bw_cc;
static bNodeType ntype;
sh_node_type_base(&ntype, SH_NODE_RGBTOBW, "RGB to BW", NODE_CLASS_CONVERTER);
ntype.declare = file_ns::sh_node_rgbtobw_declare;
node_type_exec(&ntype, nullptr, nullptr, file_ns::node_shader_exec_rgbtobw);
node_type_gpu(&ntype, file_ns::gpu_shader_rgbtobw);
nodeRegisterType(&ntype);
}
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