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Rendering directly to a resource using OpenGL interop and Hgi
doesn't work in Houdini, since it never uses the resulting resource
(it does not call `HdRenderBuffer::GetResource`). But since doing
that simultaneously disables mapping (`HdRenderBuffer::Map` is
not implemented then), nothing was displayed. To fix this, keep
track of whether a Hydra viewport does support displaying a Hgi
resource directly, by checking whether
`HdRenderBuffer::GetResource` is ever called and only enable use
of OpenGL interop if that is the case.
Differential Revision: https://developer.blender.org/D15090
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Must include the AOV writing feature in background shader evaluation.
Differential Revision: https://developer.blender.org/D15114
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The packed image loader was not aware of the fact that UDIM tiles
can be of a different size.
Exposed Python API required to access this information. It has the
same complexity as the "regular" packed files: in both cases the
ImBuf will be acquired and released to access the information.
While the current workflow of packing UDIMs is not very streamlined,
it is still possible and is something what the studio is using here.
Test file:
{F13130516}
Expected behavior achieved with this patch: a bigger checker board
pattern in viewport render
Actual behavior prior to this patch: either memory corruption, or
wrong/black render result on the plane
Differential Revision: https://developer.blender.org/D15111
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Cycles and OptiX 7.4
Acceleration structures in the viewport default to building with the fast
build flag, but the intersection program used for curves was queried with
the fast trace flag. The resulting mismatch caused an exception in the
intersection kernel. Since it's difficult to predict whether dynamic or static
acceleration structures are going to be built at the time of kernel loading,
this fixes the mismatch by always using the fast trace flag for curves.
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For non-raw, non-sRGB color spaces, always use half float even if that uses
more memory. Otherwise the precision loss from conversion to scene linear or
sRGB (as natively understood by the texture sampling) can be too much.
This also required a change to do alpha association ourselves instead of OIIO,
because in OIIO alpha multiplication happens before conversion to half float
and that gives too much precision loss.
Ref T68926
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Differential Revision: https://developer.blender.org/D15102
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It can be assumed that all scripts comply with basic pep8 formatting
regarding white-space, indentation etc.
Also remove note in best practices page & update `tests/python/pep8.py`.
If we want to exclude some scripts from make format,
this can be done by adding them to `ignore_files` in:
source/tools/utils_maintenance/autopep8_format_paths.py
Or using `# nopep8` for to ignore for individual lines.
Ref T98554
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Move MNEE to own kernel, separate from shader ray-tracing. This does introduce
the limitation that a shader can't use both MNEE and AO/bevel, but that seems
like the better trade-off for now.
We can experiment with bigger kernel organization changes later.
Differential Revision: https://developer.blender.org/D15070
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Contributed by luzpaz
Differential Revision: https://developer.blender.org/D15057
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After recent changes to Nishita sky to clamp negative colors, the pixels ended
up a bit brighter which lead to them exceeding the half float max value. The
CUDA float to half function seems to need clamping.
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Code was not yet updated to use generic attributes for vertex colors. This also
makes generic attributes work for adaptive subdivision.
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Fix "parameter unused" warning that shows up when building without NanoVDB.
No functional changes.
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Regenerate blackbody RGB curve fit to not clamp values, and extend down to
800K since it does now change below 965K.
Note that as before, blackbody is only defined in the range 800K to 12000K
and has a fixed value outside of that. But within that range there should
be no more unnecessary gamut clamping.
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This patch makes it possible to change the precision with which to
store volume data in the NanoVDB data structure (as float, half, or
using variable bit quantization) via the previously unused precision
field in the volume data block.
It makes it possible to further reduce memory usage during
rendering, at a slight cost to the visual detail of a volume.
Differential Revision: https://developer.blender.org/D10023
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Found those missing casts while looking into a crash report made in
the Blender Chat. Was unable to reproduce the crash, but the casts
should totally be there to avoid integer overflow.
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Not sure why constructing a ustring inside [] is causing issues here, but
it's slightly more efficient to construct it once anyway.
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Ensure the correct total/diffuse/transmission depth is set when evaluating
shaders for MNEE, consistent with regular light shader evaluation.
Differential Revision: https://developer.blender.org/D14902
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Match SVM and ensure valid reflection when setting up BSDFs.
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Made tangent frame consistent across the surface regardless of the sample,
which was not the case with the previous algorithm. Previously, a tangent
frame would stay consistent for the same sample throughout the walk, but not
from sample to sample for the same triangle. This actually resulted in code
simplification.
Also includes additional fixes:
* Fixed an important bug that manifested itself with multiple lights in the
scene, where caustics had abnormally low amplitude: The final light pdf did
not include the light distribution pdf.
* Removed unnecessary orthonormal basis generation function, using cycles'
native one instead.
* Increased solver max iteration back to 64: It turns out we sometimes need
these extra iterations in cases where projection back to the surface takes
many steps. The effective solver iteration count, the most expensive part,
is actually much less than the raw iteration count.
Differential Revision: https://developer.blender.org/D14931
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Also add missing task-ID reference & remove colon after \note as it
doesn't render properly in doxygen.
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This completes support for tiled texture packing on the Blender / Cycles
side of things.
Most of these changes fall into one of three categories:
- Updating Image handling code to pack/unpack tiled and multi-view images
- Updating Cycles to handle tiled textures through BlenderImageLoader
- Updating OSL to properly handle textures with multiple slots
Differential Revision: https://developer.blender.org/D14395
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Avoid 'parameter unused' warning when building Cycles without
OpenImageDenoise.
No functional changes.
Over-the-shoulder reviewed by @sergey
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to safely re-enable binary archives
This patch is the same as D14763, but with a fix for unit test failures caused by ShaderCache fetch logic not working in the non-MetalRT case:
```
diff --git a/intern/cycles/device/metal/kernel.mm b/intern/cycles/device/metal/kernel.mm
index ad268ae7057..6aa1a56056e 100644
--- a/intern/cycles/device/metal/kernel.mm
+++ b/intern/cycles/device/metal/kernel.mm
@@ -203,9 +203,12 @@ bool kernel_has_intersection(DeviceKernel device_kernel)
/* metalrt options */
request.pipeline->use_metalrt = device->use_metalrt;
- request.pipeline->metalrt_hair = device->kernel_features & KERNEL_FEATURE_HAIR;
- request.pipeline->metalrt_hair_thick = device->kernel_features & KERNEL_FEATURE_HAIR_THICK;
- request.pipeline->metalrt_pointcloud = device->kernel_features & KERNEL_FEATURE_POINTCLOUD;
+ request.pipeline->metalrt_hair = device->use_metalrt &&
+ (device->kernel_features & KERNEL_FEATURE_HAIR);
+ request.pipeline->metalrt_hair_thick = device->use_metalrt &&
+ (device->kernel_features & KERNEL_FEATURE_HAIR_THICK);
+ request.pipeline->metalrt_pointcloud = device->use_metalrt &&
+ (device->kernel_features & KERNEL_FEATURE_POINTCLOUD);
{
thread_scoped_lock lock(cache_mutex);
@@ -225,9 +228,9 @@ bool kernel_has_intersection(DeviceKernel device_kernel)
/* metalrt options */
bool use_metalrt = device->use_metalrt;
- bool metalrt_hair = device->kernel_features & KERNEL_FEATURE_HAIR;
- bool metalrt_hair_thick = device->kernel_features & KERNEL_FEATURE_HAIR_THICK;
- bool metalrt_pointcloud = device->kernel_features & KERNEL_FEATURE_POINTCLOUD;
+ bool metalrt_hair = use_metalrt && (device->kernel_features & KERNEL_FEATURE_HAIR);
+ bool metalrt_hair_thick = use_metalrt && (device->kernel_features & KERNEL_FEATURE_HAIR_THICK);
+ bool metalrt_pointcloud = use_metalrt && (device->kernel_features & KERNEL_FEATURE_POINTCLOUD);
MetalKernelPipeline *best_pipeline = nullptr;
for (auto &pipeline : collection) {
```
Reviewed By: brecht
Differential Revision: https://developer.blender.org/D14923
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D14918 from @linux_dr with some other changes included.
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