diff options
author | Lukas Tönne <lukas.toenne@gmail.com> | 2014-07-26 14:59:29 +0400 |
---|---|---|
committer | Lukas Tönne <lukas.toenne@gmail.com> | 2014-07-26 14:59:29 +0400 |
commit | e15cdec2d49ee47a85897db9838578a298146513 (patch) | |
tree | ad3ae9a05feb9819df98504951a80d3c5daadf9b /source/blender/nodes/composite | |
parent | 08725cce5a7226165a5599d165217ca89217ad0f (diff) |
New compositor node "Sun Beams"
This allows adding a "fake" sun beam effect, simulating crepuscular rays
from light being scattered in a medium like the atmosphere or deep water.
Such effects can be created also by renderers using volumetric lighting,
but the compositor feature is a lot cheaper and is independent from 3D
rendering. This makes it ideally suited for motion graphics.
The implementation uses am optimized accumulation method for gathering
color values along a line segment. The inner buffer loop uses fixed
offset increments to avoid unnecessary multiplications and avoids
variables by using compile-time specialization (see inline comments
for further details).
Diffstat (limited to 'source/blender/nodes/composite')
-rw-r--r-- | source/blender/nodes/composite/nodes/node_composite_sunbeams.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/source/blender/nodes/composite/nodes/node_composite_sunbeams.c b/source/blender/nodes/composite/nodes/node_composite_sunbeams.c new file mode 100644 index 00000000000..4d937d63b75 --- /dev/null +++ b/source/blender/nodes/composite/nodes/node_composite_sunbeams.c @@ -0,0 +1,63 @@ +/* + * ***** 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) 2014 Blender Foundation. + * All rights reserved. + * + * The Original Code is: all of this file. + * + * Contributor(s): Lukas Toenne + * + * ***** END GPL LICENSE BLOCK ***** + */ + +/** \file blender/nodes/composite/nodes/node_composite_sunbeams.c + * \ingroup cmpnodes + */ + +#include "node_composite_util.h" + +static bNodeSocketTemplate inputs[] = { + { SOCK_RGBA, 1, N_("Image"), 1.0f, 1.0f, 1.0f, 1.0f}, + { -1, 0, "" } +}; +static bNodeSocketTemplate outputs[] = { + { SOCK_RGBA, 0, N_("Image")}, + { -1, 0, "" } +}; + +static void init(bNodeTree *UNUSED(ntree), bNode *node) +{ + NodeSunBeams *data = MEM_callocN(sizeof(NodeSunBeams), "sun beams node"); + + data->source[0] = 0.5f; + data->source[1] = 0.5f; + + node->storage = data; +} + +void register_node_type_cmp_sunbeams(void) +{ + static bNodeType ntype; + + cmp_node_type_base(&ntype, CMP_NODE_SUNBEAMS, "Sun Beams", NODE_CLASS_OP_FILTER, 0); + node_type_socket_templates(&ntype, inputs, outputs); + node_type_init(&ntype, init); + node_type_storage(&ntype, "NodeSunBeams", node_free_standard_storage, node_copy_standard_storage); + + nodeRegisterType(&ntype); +} |