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Before this patch, users had to switch render engines just to change how the
hair should be displayed in solid and material preview viewport shading modes.
Differential Revision: https://developer.blender.org/D14290
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Matching CPU and Eevee behavior.
Differential Revision: https://developer.blender.org/D14296
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Contributed by luzpaz.
Differential Revision: https://developer.blender.org/D14306
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Caused by an integer overflow in the tiling utilities of OptiX SDK.
Seems for now it's easier to copy and modify code to our sources so
that we don't need to bump SDK version requirement (which might lead
to an increased driver requirement as well).
There are still some fixes needed from a newer driver to have such
denoising to work properly: Windows requires 511.79, Linux 510.54.
Thanks Patrick for investigation!
Differential Revision: https://developer.blender.org/D14300
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Fix T95462: Partly transparent objects appear to glow in the dark
The issue was caused by incorrect check for exceeded number
of transparent bounces: the same maximum distance was used
for picking up N closest intersections and counting overall
intersections count.
Now made it so intersection count is using ray distance which
matches the way how Embree and OptiX implementation works.
Benchmark result:
{F12907888}
There is no big time difference in the pabellon scene. The
Victor scene timing doesn't seem to be very reliable as the
variance in time across different benchmark runs is quite
high.
Differential Revision: https://developer.blender.org/D14280
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An alpha component can be specified for an object's color. This adds an alpha
socket to the object info shader node allowing for the alpha component of the
object's color to be accessed in the shader editor.
Differential Revision: https://developer.blender.org/D14141
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Contributed by luzpaz.
Differential Revision: https://developer.blender.org/D14203
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Caused by 6ec83afb1db8.
Technically, a regression since 3.0.
Differential Revision: https://developer.blender.org/D14239
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This is a workaround until there is a fix in the HIP compiler or driver.
Differential Revision: https://developer.blender.org/D14232
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This patch hides the MetalRT checkbox for AMD GPUs, pending fixes for MetalRT argument encoding on AMD.
Reviewed By: brecht
Differential Revision: https://developer.blender.org/D14175
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Without ray offsets intersections at neigbhoring triangles are found, as
the ray start is exactly at the vertex. There was a small offset towards
the center of the triangle, but not enough.
Now this offset computation is moved into Cycles and modified for better
results. It's still not perfect though like any offset approach, especially
with long thin triangles.
Additionaly, this uses the shadow terminate offset for AO rays now, which
helps remove some pre-existing artifacts.
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This was the last place still using the ray_offset() function.
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Also use SRC_ prefix for source variables so cmake_consistency_check.py
detects these files as being known to CMake.
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When new display driver is given to the PathTrace ensure that there are
no GPU resources used from it by the work. This solves graphics interop
descriptors leak.
This aqlso fixes Invalid graphics context in cuGraphicsUnregisterResource
error when doing final render on the display GPU.
Fixes T95837: Regression: GPU memory accumulation in Cycles render
Fixes T95733: Cycles Cuda/Optix error message with multi GPU devices. (Invalid graphics context in cuGraphicsUnregisterResource)
Fixes T95651: GPU error (Invalid graphics context in cuGraphicsUnregisterResource)
Fixes T95631: VRAM is not being freed when rendering (Invalid graphics context in cuGraphicsUnregisterResource)
Fixes T89747: Cycles Render - Textures Disappear then Crashes the Render
Maniphest Tasks: T95837, T95733, T95651, T95631, T89747
Differential Revision: https://developer.blender.org/D14146
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This affected loading of EXR files with set to Linear ACES colorspace, as
well as the sky texture for in some custom OpenColorIO configurations.
Use the builtin OpenColorIO transform from ACES AP0 to XYZ D65 to fix this.
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This is a bug on the Blender side, where the depsgraph does not have proper
relations for text object duplis and fails to include the required materials
in the dependency graph. But at least Cycles should not crash.
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GLUT does not support offscreen contexts, which is required for the new
display driver. So we use SDL instead. Note that this requires using a
system SDL package, the Blender precompiled SDL does not include the video
subsystem.
There is currently no text display support, instead info is printed to
the terminal. This would require adding an embedded font and GLSL shaders,
or using GUI library.
Another improvement to be made is supporting OpenColorIO display transforms,
right now we assume Rec.709 scene linear and display.
All OpenGL, GLEW and SDL code was move out of core cycles and into
app/opengl. This serves as a template for apps that want to integrate
Cycles interactive rendering, with a simple OpenGLDisplayDriver example.
In general this would be adapted to the graphics API and color management
used by the app.
Ref T91846
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We sometimes call start() on already started renders, just do nothing then.
Ref D14086
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Workaround for a compilation issue preventing kernels compiling for AMD GPUs: Avoid problematic use of templates on Metal by making `gpu_parallel_active_index_array` a wrapper macro, and moving `blocksize` to be a macro parameter.
Reviewed By: brecht
Differential Revision: https://developer.blender.org/D14081
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