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This patch uses the sampling method described in "A Low Distortion Map Between Triangle and Square" by Eric Heitz.
The benefit is avoiding sqrt in the calculation, which could be cheaper on some architectures, and the result is
more even sampling across the triangle surface.
Based on ideas from
https://pharr.org/matt/blog/2019/02/27/triangle-sampling-1.html
https://pharr.org/matt/blog/2019/03/13/triangle-sampling-1.5.html
Reviewed By: Brecht Van Lommel
Differential Revision: https://developer.blender.org/D6566
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# Conflicts:
# source/blender/draw/engines/eevee/eevee_volumes.c
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The problem was that Cycles would store a pointer to an object in
`DEGObjectIterData->templ_dupli_object`. This pointer was then accessed
when the iterator was already freed.
Reviewers: brecht
Differential Revision: https://developer.blender.org/D7797
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Differential Revision: https://developer.blender.org/D7782
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The previous naming scheme for the "selected to active" baking options
lead to confusion and they were not describing what they actually did.
To remedy this, I've added a new settings that does what the older setting implied it did.
Reviewed By: Brecht, Dalai, Andy Davies
Differential Revision: http://developer.blender.org/D7733
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There should be no user visible change from this, except that tile size
now affects performance. The goal here is to simplify bake denoising in
D3099, letting it reuse more denoising tiles and pass code.
A lot of code is now shared with regular rendering, with the two main
differences being that we read some render result passes from the bake API
when starting to render a tile, and call the bake kernel instead of the
path trace kernel.
With this kind of design where Cycles asks for tiles from the bake API,
it should eventually be easier to reduce memory usage, show tiles as
they are baked, or bake multiple passes at once, though there's still
quite some work needed for that.
Reviewers: #cycles
Subscribers: monio, wmatyjewicz, lukasstockner97, michaelknubben
Differential Revision: https://developer.blender.org/D3108
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Since the sampling and evaluation functions handle both cases anyways,
there's not really a point for keeping the distinction in the kernel,
so we might as well cut down the number of CLOSURE_BSDF_MICROFACETs a bit.
Differential Revision: https://developer.blender.org/D7736
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Remove old code that added extra updates for shaders that have a dependency on
objects. The dependency graph can now tell Cycles when a material is affected by
an object transform.
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Reuse the CUDA devices list for Optix device detection.
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Thanks to Subrahmanya Oruganti for spotting these.
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Recent changes assumed OpenCL 2.0 platform. This adds a check to see if
we are compiling on an OpenCL 2.0 platform.
Patch was tested on:
* AMD Radeon Pro WX 7100 with amdgpu-pro-19.50-1011208-ubuntu-18.04 drivers
* AMD Vega 64 with amdgpu-pro-20.10-1048554-ubuntu-18.04 drivers
* AMD RX 5700 with amdgpu-pro-20.10-1048554-ubuntu-18.04 drivers
Reviewed By: Brecht van Lommel
Differential Revision: https://developer.blender.org/D7637
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It appears to work fine after a recent bugfix and testing for the past few
weeks.
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Minor difference caused by clang-format v10.0
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This may fix or help diagnose T76378.
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This is a workaround, but a proper solution requires significant changes to
ray intersection in the kernel.
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Use the automatic property split layout (hence, change to the new 40/60% split
ratio) and add decorator buttons for animatable properties.
This actually applies to all node input buttons in the properties, e.g. world shading,
light shading, texture nodes.
Doing this makes the layout more consistent with other layouts in the
properties. But the decorators are also a useful hint for users that these
options can be animated. Previously using decorators and the automatic split
layout wasn't possible, I've done a number of changes now to have it supported.
Before I moved the socket icons to the left side, the decorators also looked
weird (two circle icons next to each other).
{F8497704} With nested items: {F8497708}
Reviewed By: William Reynish, Pablo Vazquez
Differential Revision: https://developer.blender.org/D7544
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Looping over all primitives for every object is really slow, so this patch avoids that by moving
the necessary assignments inline with the primitive merging done for every geometry.
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This patch will add some compiler hints to break unrolling in the
nestled for loops of the voronoi node.
Reviewed by: Brecht van Lommel
Differential Revision: https://developer.blender.org/D7574
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Mistake in rB7fc60bff14a6.
Maniphest Tasks: T76225
Differential Revision: https://developer.blender.org/D7566
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Only perform denoising prefilter for the last sample, not every sample.
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Conflicts:
source/blender/blenkernel/intern/lib_query.c
source/blender/depsgraph/intern/builder/deg_builder_relations.cc
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Work around what appears to be a compiler bug, just changing the code a bit
without any functional changes.
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cycles
Caused by rB00466e756e33.
While that commit sounds logical, Cycles uses is_updated_transform() to
detect updates.
Now introduce is_updated_shading() and use that on top.
Maniphest Tasks: T75964
Differential Revision: https://developer.blender.org/D7493
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Follow-up to previous commit.
Some examples:
{F8473507} {F8473508} {F8473509} {F8473510}
For more screenshots, please see D7430.
We use column or row headings here to bring more structure, and to give
the eye visual anchors which aid eye-scanning. The left-aligned
checkboxes likewise help with this. And we keep the adherence to the
center line, so the alignment matches up between the various buttons and
controls.
* Changes the property split percentage from 50/50% to 40/60%. This is
needed to give enough space for the checkboxes. But in most cases this
looks better anyway - see Transform panel. In some cases it simply
fills out the available space more efficently.
* Fix various hacks where we previously used manually defined splits.
When we did this, the alignment was never quite right, and the layout
code was a mess.
* Adds column headings to many places where a list of checkboxes all
share a common purpose or leading text.
* Add checkbox + value configurations various places where a checkbox
only serves to enable the value slider
* Removes most uses of grid flow layout. The grid flow layouts combine
poorly with column headings, and also they would mess alignment up
badly. The grid flow layouts also often made buttons and controls jump
around on the screen if you would just resize editors slightly,
causing visual confusion, making users lose their place. The logic for
at what time the list of items would re-flow was often flawed, jumping
to multiple columns too fast or too late - and frankly, the grid flow
layouts would often just look bad.
Maniphest Task: https://developer.blender.org/T65965
Differential Revision: https://developer.blender.org/D7430
Reviewed by: Brecht Van Lommel, Pablo Vazquez.
Most work here by William Reynish, few changes by Julian Eisel.
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CMake: `WITH_CYCLES_DEVICE_OPTIX` did not respect `WITH_CYCLES_CUDA_BINARIES` causing the optix kernel to be always build at build time.
Code: `device_optix.cpp` did not count on the optix kernel not existing in the default location.
For this to work, one should have before starting blender
1) working nvcc environment
2) Optix SDK installed and the OPTIX_ROOT_DIR environment variable pointing to it which is not set by default
Differential Revision: https://developer.blender.org/D7400
Reviewed By: Brecht
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Currently in fractal_noise functions, each subsequent octave doubles the
frequency and reduces the amplitude by half. This patch introduces Roughness
input to Noise and Wave nodes. This multiplier determines how quickly the
amplitudes of the subsequent octaves decrease.
Value of 0.5 will be the default, generating identical noise we had before.
Values above 0.5 will increase influence of each octave resulting in more
"rough" noise, most interesting pattern changes happen there. Values below
0.5 will result in more "smooth" noise.
Differential Revision: https://developer.blender.org/D7065
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