diff options
| author | Brecht Van Lommel <brechtvanlommel@pandora.be> | 2012-05-02 21:03:46 +0400 |
|---|---|---|
| committer | Brecht Van Lommel <brechtvanlommel@pandora.be> | 2012-05-02 21:03:46 +0400 |
| commit | d64661b5078cd4781bd58fce6fadedac511c4132 (patch) | |
| tree | 08abb98017e41cd6f7bfbd1f2ca87a2166f91eea /intern/cycles/render/nodes.cpp | |
| parent | 89f554fd24abb6c3986090933f771da267345b96 (diff) | |
Cycles: add Ray Length output to Light Path node. This gives the distance travelled
by the last light ray. One use case for this might be to do absorption.
Patch #31232 by Agustin benavidez, see this blog post for details:
http://agus3d.blogspot.com.ar/2012/05/blender-cycles-ray-length-node-output.html
Diffstat (limited to 'intern/cycles/render/nodes.cpp')
| -rw-r--r-- | intern/cycles/render/nodes.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/intern/cycles/render/nodes.cpp b/intern/cycles/render/nodes.cpp index 7039f5b6412..fd26c552f21 100644 --- a/intern/cycles/render/nodes.cpp +++ b/intern/cycles/render/nodes.cpp @@ -1623,6 +1623,7 @@ LightPathNode::LightPathNode() add_output("Is Singular Ray", SHADER_SOCKET_FLOAT); add_output("Is Reflection Ray", SHADER_SOCKET_FLOAT); add_output("Is Transmission Ray", SHADER_SOCKET_FLOAT); + add_output("Ray Length", SHADER_SOCKET_FLOAT); } void LightPathNode::compile(SVMCompiler& compiler) @@ -1671,6 +1672,13 @@ void LightPathNode::compile(SVMCompiler& compiler) compiler.stack_assign(out); compiler.add_node(NODE_LIGHT_PATH, NODE_LP_transmission, out->stack_offset); } + + out = output("Ray Length"); + if(!out->links.empty()) { + compiler.stack_assign(out); + compiler.add_node(NODE_LIGHT_PATH, NODE_LP_ray_length, out->stack_offset); + } + } void LightPathNode::compile(OSLCompiler& compiler) |