The old implementation was a simple rounding operation and was not
implemented for full-frame compositor.
The issue with the old implementation is that it will not give
satisfactory results for images with high frequency details,
including cases when is used for a preview on Cycles render with
low number of samples. Additionally, when applied on animated
footage it produces very noisy result.
The new algorithm uses an explicit pixel size setting, which allows
the node to be used on its own, without need to have scale-down and
scale-up nodes. It also uses neighbour averaging, which produces
better looking result during animation and noisy input images.
The old tiled compositor setup will render without changes with
this change. This commit does not include modifications in the GPU
compositor implementation.
Ref #88150
Pull Request: https://projects.blender.org/blender/blender/pulls/117223
For high radii Kuwahara, we use a Summed Area Table (SAT) implementation
to accelerate the classic variant of the algorithm. The problem is that
due to limited floating point precision, the SAT can produce artifacts
in its output.
An attempt to fix this was implemented in #114191, and while that patch
improved precision by 10x, the artifacts still existed, albeit less
noticeable. But since the improved precision also meant a performance
penalty, it was decided that the improvement is not worth it.
Since the artifacts are only noticeable for scenes with very high
values, this patch adds a High Precision option that defaults to false
and can be enabled by the user upon noticing any artifacts. The option
simply uses direction convolution instead of SAT in this case. The
downside, of course, is that it can be orders of magnitude slower.
An alternative to using this option is for the user to clamp the input
or downsample the image. Both methods should be documented in the
documentation.
Fixes: #113578.
Pull Request: https://projects.blender.org/blender/blender/pulls/115763
Part of overall "improve filtering situation" (#116980) task:
* Add Bicubic filtering option to strip Transform "Filter" setting.
Previously this option only existed in Transform Effect "Interpolation"
setting.
- With this addition, it feels like the transform effect could
possibly be marked as legacy/deprecated, since the regular Transform
that is on all strips can do everything that Transform Effect did?
* Speed up bicubic filtering (used now in VSE, but also in CPU Compositor,
image paint, etc.) by slightly simplifying the code and using some SIMD.
Upscaling 96x54 image to 3840x2160 resolution, using Bicubic filtering:
- Windows (VS2022, Ryzen 5950X): 35.5ms -> 15.1ms
- Mac (clang 15, M1 Max): 29.6ms -> 24.4ms
* Add gtest coverage for bicubic functionality.
Pull Request: https://projects.blender.org/blender/blender/pulls/117100
The previous commit introduced a new `RPT_()` macro to translate
strings which are not tooltips or regular interface elements, but
longer reports or statuses.
This commit uses the new macro to translate many strings all over the
UI.
Most of it is a simple replace from `TIP_()` or `IFACE_()` to
`RPT_()`, but there are some additional changes:
- A few translations inside `BKE_report()` are removed altogether
because they are already handled by the translation system.
- Messages inside `UI_but_disable()` are no longer translated
manually, but they are handled by a new regex in the translation
system.
Pull Request: https://projects.blender.org/blender/blender/pulls/116804
Pull Request: https://projects.blender.org/blender/blender/pulls/116804
This patch implements the Vector Blur node for the Realtime Compositor.
The implementation is a direct and mostly identical port of the EEVEE
motion blur implementation with the necessary adjustments to make it
work with the compositor.
The exposed parameters in the node does not match those exposed in
EEVEE, so only the parameters shared between both are currently
implemented. In the future, we should make a decision to either unify
both, or just consider them independent implementations, with the
possibility of sharing the full or part of the code.
Further, it would also make sense to port the implementation to the CPU
compositor, since the new implementation is higher in quality while also
being faster.
The default value of the node shutter setting was changed to 0.25 to
approximately match the default settings of EEVEE and Cycles, since in
their default settings, they evaluate the previous and next frames at
plus and minus 0.25.
Pull Request: https://projects.blender.org/blender/blender/pulls/116977
This patch redesigns the Sun Beams node. The old implementation produces
unexpected results with an arbitrary alpha channel, due to the use of a
step count normalization instead of a weighted normalization. The
quality is also questionable due to the use of nearest neighbour
interpolation as well as a low resolution integration.
This patches redesign the node to be a simple line integration towards
the source, limited by the maximum ray length. The sampling resolution
covers the entire path of the integration and the image is sampled using
bilinear filtering, producing smoother results. No alpha is introduced.
Pull Request: https://projects.blender.org/blender/blender/pulls/116787
The GPU Directional Blur node does not match CPU. This is because GPU
accumulates the scale, while the CPU increments it. This patch
incremenets the scale for the GPU to make them match.
This commit adds a new helper to define expected properties when a
target needs to use the unity build feature.
That new helper does what was already done for existing cases, and in
addition add the target to the Ninja 'heavy' pooljobs if relevant.
Pull Request: https://projects.blender.org/blender/blender/pulls/116791
The GPU implementation of the morphological feather erosion operator is
different from the CPU implementation. This is because the CPU does
erosion by doing dilation sandwiched between two inverse functions. So
this patch fixes the different by following the CPU implementation.
Bundling many tests in a single binary reduces build time and disk space
usage, but is less convenient for running individual tests command line
as filter flags need to be used.
This adds WITH_TESTS_SINGLE_BINARY to generate one executable file per
source file. Note that enabling this option requires a significant amount
of disk space.
Due to refactoring, the resulting ctest names are a bit different than
before. The number of tests is also a bit different depending if this
option is used, as one uses gtests discovery and the other is organized
purely by filename, which isn't always 1:1.
Co-authored-by: Sergey Sharybin <sergey@blender.org>
Pull Request: https://projects.blender.org/blender/blender/pulls/114604
Along with the 4.1 libraries upgrade, we are bumping the clang-format
version from 8-12 to 17. This affects quite a few files.
If not already the case, you may consider pointing your IDE to the
clang-format binary bundled with the Blender precompiled libraries.
Followup to #114755. Initialize operation results explicitly if the input is constant. This patch unifies the size inference behavior of the following nodes/operation:
- Flip node
- Kuwahara (classic)
- Lens distortion
- Tonemap node
Pull Request: https://projects.blender.org/blender/blender/pulls/115733
This patch unifies the behavior of the scale node by removing the arbitrary limit of scaling images. The change applies to scale and transform nodes.
Note: with this change, Blender can crash for large resizing factors (around 10 000 x 10 000 relative factors). We think it's very unlikely users will run into this issue, so we agreed errors coming from failed memory allocation won't be handled, as is the case for GPU compositor.
Pull Request: https://projects.blender.org/blender/blender/pulls/114764
Blender crashes when changing the source of the image node to Generated
then to something else, then making any changes to the image. This is
just due to a nullptr GPU texture.
This is because Blender resets the path of the image when changed to
Generated source.
The Glare node crashes in the full-frame compositor when its input is a
single value. Since the Glare node is constant foldable, do not inflate
its input and instead output a single value.
This patch implements the defocus node for the Realtime Compositor. The
implementation does not match the CPU compositor implementation, but
uses a new formulation that is more physically accurate and consistent
with Blender's render engines.
The existing CPU implementation is questionable starting from its circle
of confusion calculation, to the morphological operations applied on the
CoC radius, to ignoring the maximum CoC radius in the search kernel, and
ending with the threshold parameter used to reduce artifacts. Therefore,
it should be reimplemented along with this same implementation using a
more consistent methodology.
EEVEE and Workbench already have a GPU defocus method, which can be
ported to the compositor and used as the preview defocus algorithm.
While this implementation will be updated to be a more accurate method
that produces the same structure as the ported EEVEE implementation.
The new formulation ignores the threshold parameter for now, as well as
the preview parameter.
Pull Request: https://projects.blender.org/blender/blender/pulls/116391
This patches refactors the compositor File Output mechanism and
implements the file output node for the Realtime Compositor. The
refactor was done for the following reasons:
1. The existing file output mechanism relied on a global EXR image
resource where the result of each compositor execution for each
view was accumulated and stored in the global resource, until the
last view is executed, when the EXR is finally saved. Aside from
relying on global resources, this can cause effective memory leaks
since the compositor can be interrupted before the EXR is written and
closed.
2. We need common code to share between all compositors since we now
have multiple compositor implementations.
3. We needed to take the opportunity to fix some of the issues with the
existing implementation, like lossy compression of data passes,
and inability to save single values passes.
The refactor first introduced a new structure called the Compositor
Render Context. This context stores compositor information related to
the render pipeline and is persistent across all compositor executions
of all views. Its extended lifetime relative to a single compositor
execution lends itself well to store data that is accumulated across
views. The context currently has a map of File Output objects. Those
objects wrap a Render Result structure and can be used to construct
multi-view images which can then be saved after all views are executed
using the existing BKE_image_render_write function.
Minor adjustments were made to the BKE and RE modules to allow saving
using the BKE_image_render_write function. Namely, the function now
allows the use of a source image format for saving as well as the
ability to not save the render result as a render by introducing two new
default arguments. Further, for multi-layer EXR saving, the existent of
a single unnamed render layer will omit the layer name from the EXR
channel full name, and only the pass, view, and channel ID will remain.
Finally, the Render Result to Image Buffer conversion now take he number
of channels into account, instead of always assuming color channels.
The patch implements the File Output node in the Realtime Compositor
using the aforementioned mechanisms, replaces the implementation of the
CPU compositor using the same Realtime Compositor implementation, and
setup the necessary logic in the render pipeline code.
Pull Request: https://projects.blender.org/blender/blender/pulls/113982
The Realtime compositor currently relies on the GPU cache in image IDs.
That cache only supports single layer images, so multi-layer images will
be acquired without a cache, introducing significant IO bottlenecks for
the GPU compositor.
This patch ignores the image GPU cache and stores the images in the
static cache manager of the compositor. Draw data was introduced to the
image ID for proper cache invalidation, like other IDs such as masks.
The downside is that the cache will no longer be shared between EEVEE
and the compositor. But realistically, images are not typically shared
between materials and compositors.
This is just a temporary solution until we have proper GPU storage
support for image buffers.
Pull Request: https://projects.blender.org/blender/blender/pulls/115511
This patch creates a static cached resource from bokeh kernel images,
for better performance and reusability, since it will be used by the
Defocus node as well.
Due to changes in the build environment shader_builder wasn't able to
compile on macOs. This patch reverts several recent changes to CMake files.
* dbb2844ed9
* 94817f64b9
* 1b6cd937ff
The idea is that in the near future shader_builder will run on the buildbot as
part of any regular build to ensure that changes to the CMake doesn't break
shader_builder and we only detect it after a few days.
Pull Request: https://projects.blender.org/blender/blender/pulls/115929
