On a user level this fixes configuration when a spot light is
linked to an object, and a sun light is not linked to anything.
It used to be making non-linked receivers to be very noisy.
This is because the distant light did not update the node's
light linking settings when they are added to the node.
A simple demo file will be added to the tests suit as
light_link_distant_tree.blend.
Pull Request: https://projects.blender.org/blender/blender/pulls/108311
Only Embree CPU BVH was built in the multi-device case. However, one
Embree GPU BVH is needed per GPU, so we now reuse the same logic as in
the other backends.
Pull Request: https://projects.blender.org/blender/blender/pulls/107992
Used to be https://archive.blender.org/developer/D17123.
Internally these are already using the same code path anyways, there's no point in maintaining two distinct nodes.
The obvious approach would be to add Anisotropy controls to the Glossy BSDF node and remove the Anisotropic BSDF node. However, that would break forward compability, since older Blender versions don't know how to handle the Anisotropy input on the Glossy BSDF node.
Therefore, this commit technically removes the Glossy BSDF node, uses versioning to replace them with an Anisotropic BSDF node, and renames that node to "Glossy BSDF".
That way, when you open a new file in an older version, all the nodes show up as Anisotropic BSDF nodes and render correctly.
This is a bit ugly internally since we need to preserve the old `idname` which now no longer matches the UI name, but that's not too bad.
Also removes the "Sharp" distribution option and replaces it with GGX, sets Roughness to zero and disconnects any input to the Roughness socket.
Pull Request: https://projects.blender.org/blender/blender/pulls/104445
This will make further changes for light linking easier, where we want to
build multiple trees specialized for each light linking set.
It's also easier to understand than the stack used previously.
Pull Request: https://projects.blender.org/blender/blender/pulls/107560
In some cases the Geometry Nodes Volume Cube generates
a Volume grid that doesn't contain any leaf nodes. This can happen
when only tiles are needed to represent the volume.
This PR changes the `empty_grid` check function to also check if
there are any active tiles in the grid before returning `true`.
Pull Request: https://projects.blender.org/blender/blender/pulls/107551
HIP RT enables AMD hardware ray tracing on RDNA2 and above, and falls back to a
to shader implementation for older graphics cards. It offers an average 25%
sample rendering rate improvement in Cycles benchmarks, on a W6800 card.
The ray tracing feature functions are accessed through HIP RT SDK, available on
GPUOpen. HIP RT traversal functionality is pre-compiled in bitcode format and
shipped with the SDK.
This is not yet enabled as there are issues to be resolved, but landing the
code now makes testing and further changes easier.
Known limitations:
* Not working yet with current public AMD drivers.
* Visual artifact in motion blur.
* One of the buffers allocated for traversal has a static size. Allocating it
dynamically would reduce memory usage.
* This is for Windows only currently, no Linux support.
Co-authored-by: Brecht Van Lommel <brecht@blender.org>
Ref #105538
Scene.cpp and Geometry.cpp are large file it can be broken up into smaller easier to handle files. This change has been broken out from #105403 to make understanding the changes easier.
geometry.cpp is broken up into:
1. geometry.cpp
2. geometry_attributes.cpp
3. geometry_bvh.cpp
4. geometry_mesh.cpp
scene.h & scene.cpp is broken into:
1. scene.h
2. scene.cpp
3. devicescene.h
4. devicescene.cpp
Pull Request: https://projects.blender.org/blender/blender/pulls/107079
Due to floating point differences between importance sampling and
texture evaluation, disagreeing on whether or not a ray lies within
the sun disc.
* Use the same input values for geographical_to_direction() in
sky_radiance_nishita() and kernel_data.background.sun.
* The mathematical operations in pdf_uniform_cone() were adjusted to
match sky_radiance_nishita().
Pull Request: https://projects.blender.org/blender/blender/pulls/106764
It was that names of related "combo" operations
like Hue/Saturation/Value, *Dilate/Erode*
and Brightness/Contrast should be separated
by slashes in their names.
This patch changes this for the multiple nodes
and operators concerning Hue/Saturation/Value
across Blender.
Note1: This patch should only touch UI names
which do not need versioning and should not
break scripts.
Note2: This breaks first letter fuzzy search
for "hsv". It was noted by @HooglyBoogly that
the "/" character needs to be added to the
fuzzy search split list. Note however that such
search is already broken in Main for nodes like
Brightness/Contrast and Dilate/Erode which
already use slash separators
Pull Request: https://projects.blender.org/blender/blender/pulls/106721
Make it a native Cycles light option instead of counter-acting the inverse
area calculation in Hydra.
Differential Revision: https://developer.blender.org/D16838
The problem is that `set_geometry()` otherwise ends up implicitly
casting `Geometry*` to bool. In Blender this worked because the
geometry header was always included before the object header.
Differential Revision: https://developer.blender.org/D16737
For example
```
OIIOOutputDriver::~OIIOOutputDriver()
{
}
```
becomes
```
OIIOOutputDriver::~OIIOOutputDriver() {}
```
Saves quite some vertical space, which is especially handy for
constructors.
Pull Request: https://projects.blender.org/blender/blender/pulls/105594
was assuming such cases are already handled before this function is
called, but seems to be broken on windows and linux. Do
`safe_normalize()` so the tests pass, will check the problem afterwards.
* Group bounding box, bounding cone and energy to a struct called `LightTreePrimitivesMeasure`
* Add utility functions to add primitives to nodes or buckets
* Precompute the split bucket cost to improve efficiency (about 1.4x expected)
Pull Request: https://projects.blender.org/blender/blender/pulls/105931
Push a task to `TaskPool` when more than `MIN_PRIMS_PER_THREAD` primitives are to be processed. The nodes are rearranged in a depth-first order when copied to the device.
Tested with the scene in #105550 on an Apple M1 Ultra (20 cores), about 11x speedup.
Pull Request: https://projects.blender.org/blender/blender/pulls/105862
When linking a texture directly to the material output, it's likely being
done for the purpose of previewing. In that case, bias the heuristic towards
not building a light tree, as it's likely not needed and slow on dense meshes.
