Cr8-xyz/blender
1
0
Fork 0
Code Issues Pull Requests Actions 1 Packages Projects Releases Wiki Activity

Cycles: Optimization for black world backgrounds

Browse Source 
* If a Background node is set to a black color or zero strength,
it now gets removed from the shader graph.

* In case the graph is empty (no background node), the kernel will skip
evaluating it and save some rendertime. This can help quite a bit in scenes,
where the majority of the image consists of a black background.

Example: http://www.pasteall.org/pic/show.php?id=82650
In this case the render is ~16% faster.

Differential Revision: https://developer.blender.org/D972
This commit is contained in:
Thomas Dinges
2015-01-21 20:06:53 +01:00
parent 7165db53f2
commit cd72396797
4 changed files with 43 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

27
intern/cycles/render/background.cpp
View File

@@ -72,16 +72,23 @@ void Background::device_update(Device *device, DeviceScene *dscene, Scene *scene
else
kbackground->volume_shader = SHADER_NONE;
if(!(visibility & PATH_RAY_DIFFUSE))
kbackground->surface_shader |= SHADER_EXCLUDE_DIFFUSE;
if(!(visibility & PATH_RAY_GLOSSY))
kbackground->surface_shader |= SHADER_EXCLUDE_GLOSSY;
if(!(visibility & PATH_RAY_TRANSMIT))
kbackground->surface_shader |= SHADER_EXCLUDE_TRANSMIT;
if(!(visibility & PATH_RAY_VOLUME_SCATTER))
kbackground->surface_shader |= SHADER_EXCLUDE_SCATTER;
if(!(visibility & PATH_RAY_CAMERA))
kbackground->surface_shader |= SHADER_EXCLUDE_CAMERA;
/* No background node, make world shader invisible to all rays, to skip evaluation in kernel. */
if(scene->shaders[shader]->graph->nodes.size() <= 1) {
kbackground->surface_shader |= SHADER_EXCLUDE_ANY;
}
/* Background present, check visibilities */
else {
if(!(visibility & PATH_RAY_DIFFUSE))
kbackground->surface_shader |= SHADER_EXCLUDE_DIFFUSE;
if(!(visibility & PATH_RAY_GLOSSY))
kbackground->surface_shader |= SHADER_EXCLUDE_GLOSSY;
if(!(visibility & PATH_RAY_TRANSMIT))
kbackground->surface_shader |= SHADER_EXCLUDE_TRANSMIT;
if(!(visibility & PATH_RAY_VOLUME_SCATTER))
kbackground->surface_shader |= SHADER_EXCLUDE_SCATTER;
if(!(visibility & PATH_RAY_CAMERA))
kbackground->surface_shader |= SHADER_EXCLUDE_CAMERA;
}
need_update = false;
}