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Switch to Gregory basis patches which are tangent continuous across their
boundaries.
Originally we've used BSpline basis patches to be more compatible with the
old subdivision code, but a lot of things changed anyway.
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When encountering an error during context creation, the "OptiXDevice" constructor aborts early.
This means the "cuda_stream" vector is never resized and the destructor iterated over non-existent data.
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The acceleration structure built by OptiX may be different between GPUs, so cannot assume the memory size is the same for all.
This fixes that by moving the memory management for all OptiX acceleration structures into the responsibility of each device (was already the case for BLAS previously, now for TLAS too).
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average fresnel
The Principled BSDF uses Microfacet closures that include a fresnel term,
which are a special case since their weight tends to be near white even
if their average contribution is fairly low.
The sample weight is scaled by the average fresnel weight to account for
this, but the denoising albedo still used the unscaled weight.
This was fine for the original denoiser, but apparently OIDN can't handle
the resulting albedo pass well. Therefore, this commit adds the described
scaling to the albedo pass contribution as well.
This problem was described in T69770.
Reviewed By: brecht
Differential Revision: https://developer.blender.org/D6289
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Extend options are currently stored per curve. This was not clearly
communicated to the user and they expected this to be a setting per
CurveMapping.
This change will move the option from `Curve` to `CurveMapping`. In
order to support this the API had to be changed.
BPY: CurveMap.evaluate is also moved to CurveMapping.evaluate what
breaks Python API. Cycles has been updated but other add-ons have
not. After release of 2.81 we can merge this to master and adapt
the add-ons.
Reviewed By: campbellbarton
Differential Revision: https://developer.blender.org/D6169
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The Random Per Island attribute is a random float associated with each
connected component (island) of the mesh. It is particularly useful
when artists want to add variations to meshes composed of separate
units. Like tree leaves created using particle systems, wood planks
created using array modifiers, or abstract splines created using AN.
Reviewed By: Sergey Sharybin, Jacques Lucke
Differential Revision: https://developer.blender.org/D6154
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Calling "OptiXDevice::load_kernels" multiple times would call "optixPipelineDestroy" on a pipeline
pointer that may have already been deleted previously (since the PIP_SHADER_EVAL pipeline is only
created conditionally).
This change also avoids a CUDA kernel reload every time this is called. The CUDA kernels are
precompiled and don't change, so there is no need to reload them every time.
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Also correct some outdated symbol references,
add missing 'name' commands.
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The OptiX intersection program for curves uses "optixGetObjectRayDirection"
to get the ray direction in object space (which was inverse transformed
with the current transformation matrix). OptiX does no additional operations
on it, so if there is a scaling transform, the direction is not normalized.
But the curve intersection routine expects that. In addition, the distances
used in "optixGetRayTmax()" and "optixReportIntersection()" are in world
space, so need to adjust them accordingly.
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This commit adds a new command line argument --debug-ghost and
makes it so X11 errors happening during context initialization
are only printed when this new flag is sued.
There is no need to flood users with errors when their GPU is
not supporting latest OpenGL version. Or, at a very minimum,
the error must be more meaning full.
Differential Revision: https://developer.blender.org/D6057
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In order to recover from a transient Focus Out - Focus In disruption
in the middle of a shortcut, which can be caused by certain window
managers, Blender has code that checks which modifier keys are pressed
after Focus In and restores the modifier state based on that.
If one of the Ctrl, Shift, Alt, Super keys is not mapped anywhere
in the active keyboard layout, XKeysymToKeycode returns the invalid
zero keycode, and reading the key state produces garbage, which can
cause an invalid modifier state. Check the return value to avoid this.
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`WS_CHILD` is a different kind of child window that what we define as
child window. See http://forums.codeguru.com/showthread.php?491604.
Setting this style flag seems to mess things up a bit in our
configuration. The name bar is actually being overlapped by the Windows
task bar then. Not totally sure why this happens, but I think it's
because windows with the `WS_CHILD` style are positioned relative to the
parent, not the desktop (screen without taskbar). So it uses the full
space available when maximized, which isn't clipped by the taskbar
anymore.
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When using OpenCL with Cycles the rendering time increased substantial.
After doing some tests the bottleneck was found in 4d voronoi and 2d and
3d smooth voronoi.
This change will hide these behind a specific compile directive so the
speed will improve.
AMD RX480 + BMW scene
2.80 (3:10)
2.81 (5:48)
2.81 excluding 4d voronoi+2d/3d smooth (3:50)
Reviewed By: sergey
Differential Revision: https://developer.blender.org/D6231
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This change switches windows to the dynamic C runtime
avoiding issues coming from mixing the static and dynamic
runtime like the ones outlined in [1]
[1] https://developer.blender.org/D5387#122165
Differential Revision: https://developer.blender.org/D6175
Reviewed by: @Sergey
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Pointer used for math arithmetics in assert().
CUDA device pointer is actually an integer type, not a pointer.
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The multi device code did not correctly handle cases where some GPUs store a
resource in device memory and others store it in host mapped memory.
Differential Revision: https://developer.blender.org/D6126
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Cycles did not update the "is_enabled" flag on lights when they were synchronized again, which caused all lights disabled by "LightManager::disable_ineffective_light" to be disabled indefinitely. As a result the OptiX kernels were not reloaded with correct features when a change to a light was made. This fixes that by updating the "is_enabled" flag during synchronization.
Differential Revision: https://developer.blender.org/D6141
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The cryptomatte sockets were incorrectly numbered using a step size of two. While the increment by two is necessary to get the correct number of render passes, they should be numbered consecutively matching the socket names of the cryptomatte node.
Reviewed By: lukasstockner97
Differential Revision: https://developer.blender.org/D6185
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No functional change.
Differential Revision: https://developer.blender.org/D6172
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The idea is to give multiple coordinates to evaluator and evaluate them
all at once, avoiding any possible overhead.
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Allows to pass multiple patch coordinates for evaluation.
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Saves another unnecessary temporary data copy during evaluation.
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Consider that all builders have face-varying evaluation now.
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Make evaluator itself to write directly to the output buffer.
Brings unmeasurable speedup and makes it possible to simplify
some buffer class logic.
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We currently don't support interleaved varying data, so can make
some buffer smaller.
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mentioned in T70974
Maniphest Tasks: T70974
Differential Revision: https://developer.blender.org/D6119
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This brings the behavior in line with Windows and Linux. Going between
multiple windows now doesn't use the first click only to change focus
but also allows Blender to process those events.
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