diff options
Diffstat (limited to 'source/blender/nodes/shader/nodes/node_shader_blackbody.cc')
-rw-r--r-- | source/blender/nodes/shader/nodes/node_shader_blackbody.cc | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/source/blender/nodes/shader/nodes/node_shader_blackbody.cc b/source/blender/nodes/shader/nodes/node_shader_blackbody.cc new file mode 100644 index 00000000000..85e2ed08403 --- /dev/null +++ b/source/blender/nodes/shader/nodes/node_shader_blackbody.cc @@ -0,0 +1,62 @@ +/* + * 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.hh" + +namespace blender::nodes::node_shader_blackbody_cc { + +static void node_declare(NodeDeclarationBuilder &b) +{ + b.add_input<decl::Float>(N_("Temperature")).default_value(1500.0f).min(800.0f).max(12000.0f); + b.add_output<decl::Color>(N_("Color")); +} + +static int node_shader_gpu_blackbody(GPUMaterial *mat, + bNode *node, + bNodeExecData *UNUSED(execdata), + GPUNodeStack *in, + GPUNodeStack *out) +{ + const int size = CM_TABLE + 1; + float *data = static_cast<float *>(MEM_mallocN(sizeof(float) * size * 4, "blackbody texture")); + + blackbody_temperature_to_rgb_table(data, size, 965.0f, 12000.0f); + + float layer; + GPUNodeLink *ramp_texture = GPU_color_band(mat, size, data, &layer); + + return GPU_stack_link(mat, node, "node_blackbody", in, out, ramp_texture, GPU_constant(&layer)); +} + +} // namespace blender::nodes::node_shader_blackbody_cc + +/* node type definition */ +void register_node_type_sh_blackbody() +{ + namespace file_ns = blender::nodes::node_shader_blackbody_cc; + + static bNodeType ntype; + + sh_node_type_base(&ntype, SH_NODE_BLACKBODY, "Blackbody", NODE_CLASS_CONVERTER); + ntype.declare = file_ns::node_declare; + node_type_size_preset(&ntype, NODE_SIZE_MIDDLE); + node_type_gpu(&ntype, file_ns::node_shader_gpu_blackbody); + + nodeRegisterType(&ntype); +} |