Differential D13482 Diff 45676 source/blender/nodes/shader/nodes/node_shader_rgb_to_bw.cc

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source/blender/nodes/shader/nodes/node_shader_rgb_to_bw.cc

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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_valToRgb_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, 0);
				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);
				}