It was read of initialized memory around holdout_weight in cases when
holdout material is used. Seems that it should be assigned to result
of shader_holdout_eval here.
If Brecht could double check this it'll be great.
This could potentially fix#32224: Holdout Error with CUDA Cycles Render
direct and indirect lighting differently. Rather than picking one light for each
point on the path, it now loops over all lights for direct lighting. For indirect
lighting it still picks a random light each time.
It gives control over the number of AA samples, and the number of Diffuse, Glossy,
Transmission, AO, Mesh Light, Background and Lamp samples for each AA sample.
This helps tuning render performance/noise and tends to give less noise for renders
dominated by direct lighting.
This sampling mode only works on the CPU, and still needs proper tile rendering
to show progress (will follow tommorrow or so), because each AA sample can be quite
slow now and so the delay between each update wil be too long.
* Removed a workaround for the NodeType enum, uses consecutive values now.
I could not find issues with CUDA, when compiling with Toolkit 4.2 (all sm kernels) and regression files rendered fine on my GPU with sm_21.
The particle data is stored in a separate texture if any of the dupli objects uses particle info nodes in shaders. To map dupli objects onto particles the store an additional particle_index value, which is different from the simple dupli object index (only visible particles, also works for particle dupli groups mode).
Some simple use cases on the code.blender.org blog:
http://code.blender.org/index.php/2012/05/particle-info-node/
* __OSL__ is now defined for CPU when building with OSL.
* First batch of compile fixes, remove some unneeded std namespace declarations and added missing includes.
* More fixes, replaced all remaining size variables with scale ones.
* Remove nonzero check in OSL textures, not needed anymore, was there to prevent division by zero for the size variable.
* More fixes for r41599, removed clouds and distorted noise textures and ported the Noise texture to OSL.
ToDo: Color output is still commented, needs a closer look.
* Some more fixes (comments, uninitialized variables)
other places, was mainly due to instancing not working, but also found
issues in procedural textures.
The problem was with --use_fast_math, this seems to now have way lower
precision for some operations. Disabled this flag and selectively use
fast math functions. Did not find performance regression on GTX 460 after
doing this.
pass index, and a random number unique to the instance of the object.
This can be useful to give some variation to a single material assigned to
multiple instances, either manually controlled through the object index, based
on the object location, or randomized for each instance.
http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Nodes/More#Object_Info
