A flag was not enough for this, we actually need to pass along the MIS weight,
so we can compute the direct contribution without the MIS weight.
Pull Request: blender/blender#108195
The practical problem this change addresses is ability to have base
flag dependent functionality in Cycles without re-setting the render
on selection. This problem initially arose during the Cycles light
linking project.
The original review happened there:
blender/blender#105837
Pull Request: blender/blender#108182
Move the instancing related code to a dedicated function, leaving
the generic `build_collection()` dedicated to the building of the
collection itself.
Should be no functional changes: the code paths should effectively
still be the same. This is because non-instancing cases were passing
object as a null pointer, disabling the non-generic code path.
In previous implementation the first available render surface was
selected. For NVIDIA platform this was the correct one, but for
AMD and Intel GPUs this was incorrect. This PR goes over all the
available render surfaces and selects a compatible one.
For now when no compatible render surface is found it will still select
the first available one. With the expectation that the screen is drawn
incorrectly and users would report a bug so we can investigate.
Pull Request: blender/blender#108169
Covers the macro ARRAY_SIZE() and STRNCPY.
The problem this change is aimed to solve it to provide cross-platform
compiler-independent safe way pf ensuring that the functions are used
correctly.
The type safety was only ensured for GCC and only for C. The C++
language and Clang compiler would not have detected issues of passing
bare pointer to neither of those macros.
Now the STRNCPY() will only accept a bounded array as the destination
argument, on any compiler.
The ARRAY_SIZE as well, but there are a bit more complications to it
in terms of transparency of the change.
In one place the ARRAY_SIZE was used on float3 type. This worked in the
old code because the type implements subscript operator, and the type
consists of 3 floats. One would argue this is somewhat hidden/implicit
behavior, which better be avoided. So an in-lined value of 3 is used now
there.
Another place is the ARRAY_SIZE used to define a bounded array of the
size which matches bounded array which is a member of a struct. While
the ARRAY_SIZE provides proper size in this case, the compiler does not
believe that the value is known at compile time and errors out with a
message that construction of variable-size arrays is not supported.
Solved by converting the field to std::array<> and adding dedicated
utility to get size of std::array at compile time. There might be a
better way of achieving the same result, or maybe the approach is
fine and just need to find a better place for such utility.
Surely, more macro from the BLI_string.h can be covered with the C++
inlined functions, but need to start somewhere.
There are also quite some changes to ensure the C linkage is not
enforced by code which includes the headers.
Pull Request: blender/blender#108041
Allows to share buffer data between the render result and image buffers.
The storage of the passes and buffers in the render result have been
wrapped into utility structures, with functions to operate on them.
Currently only image buffers which are sharing buffers with the render
results are using the implicit sharing. This allows proper decoupling of
the image buffers from the lifetime of the underlying render result.
Fixes#107248: Compositor ACCESS VIOLATION when updating datablocks from handlers
Additionally, this lowers the memory usage of multi-layer EXR sequences
by avoiding having two copies of render passes in memory.
It is possible to use implicit sharing in more places, but needs
some API to ensure the render result is the only owner of data before
writing to its pixels.
Pull Request: blender/blender#108045
This hard-coded assumption meant that operators would behave as if
bl_property = "type" was assigned in the operator - when the variable
wasn't found.
Remove the hard coded name. Operators that depended on this now need
to assign bl_property = "type" in the operator class explicitly.
Remove this because it wasn't documented as means operator behavior
could change unexpectedly when renaming a property.
While in practice an overflow seems unlikely in this particular case,
internal path manipulation assume FILE_MAX_LIBEXTRA so passing in
smaller buffer sizes is error prone.
Many "UV island" style operations internally use #UvElementMap, including:
- Transform tools
- Smart-Stitch
- UV Pinch, UV Grab and UV Relax sculpt tools.
Normally, every UV in the mesh is included in the #UvElementMap.
However, with hidden geometry, only the visible geometry is included in the map. [0]
This change enforces stricter usage, reducing the chance of crashes in other areas.
Regression from [0] which was a fix for "UV Island calculation doesn't ignore hidden faces" [1].
[0]: 8f543a73ab
[1]: #99659
Pull Request: blender/blender#108130
Adds stencil texture view support for Metal, allowing reading of
stencil component during texture sample/read.
Stencil view creation refactored to use additional parameter in
textureview creation function, due to deferred stencil parameter
causing double texture view creation in Metal, when this should
ideally be provided upfront.
Authored by Apple: Michael Parkin-White
Pull Request: blender/blender#107971
When light-linked mesh emitter has raytrace dependent node (such as
bevel) OptiX render would have failed with an invalid address.
Pull Request: blender/blender#108154
