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2020-09-21Cycles: Separate Embree device for each CPU Device.Stefan Werner
Before, Cycles was using a shared Embree device across all instances. This could result in crashes when viewport rendering and material preview were using Cycles simultaneously. Fixes issue T80042 Maniphest Tasks: T80042 Differential Revision: https://developer.blender.org/D8772
2020-09-21Fix OpenCL render error in large scenesBrecht Van Lommel
In scenes such as Cosmos Laundromat, there were memory allocations bigger than 2GB which would overflow. Problem and solution found by AMD, thanks!
2020-09-21Fix T71012: Cycles baking crash with locked-UI & background-modeCampbell Barton
2020-08-28Fix T80149: Cycles OpenCL baking broken after changes to uses tiles for bakingBrecht Van Lommel
We forgot to update this code as part of D3108. I'd like to include this in 2.90, it's entirely broken now so can't really get any worse. Differential Revision: https://developer.blender.org/D8738
2020-08-25Fix T77298: Cycles multiple object making not working with multiple samplesBrecht Van Lommel
The previous fix loaded the pixels so existing tiles were not overwritten. However the Cycles render buffer is expected to be scaled by the number of sample, which was not taken into account. This is not ideal in that previews could have a mismatched number of samples between multiple objects, though the result will be correct. The better solution would be to bake all objects together per tile, rather than one after the other. But that is a bigger change than we can do in 2.90. Differential Revision: https://developer.blender.org/D8704
2020-08-24Fix T79819: crash with OSL trace() and getmessage() after Embree changesBrecht Van Lommel
The return value of scene_intersect must be checked, the isect struct members can't be assumed to be initialized if that returns false. Differential Revision: https://developer.blender.org/D8692
2020-08-18Remove (ifdef) RNA for simulation, point cloud and particlesDalai Felinto
For 2.90 release this should not be exposed in the RNA API. In master this needs to be ON by default, that's all. Differential Revision: https://developer.blender.org/D8589
2020-08-17Fix T77683: Cycles baking crash with motion blur enabled and no cameraPhilipp Oeser
specified Maniphest Tasks: T77683 Differential Revision: https://developer.blender.org/D8593
2020-08-17Cycles: Fix local intersections in Embree for non-instancd geometry.Stefan Werner
Embree's occlusion filter was checking against the wrong object ID and not exiting correctly in case of a mismatch. Fixes T79723
2020-08-17Fix T79052: Cycles new sky texture fails with sun size zeroBrecht Van Lommel
Clamp to a minimum angle to avoid precision issues.
2020-08-14Fix T79769, T79768: crash tweaking volume settings with Cycles viewport renderBrecht Van Lommel
Refitting the BVH does not work in this case, it needs to be fully rebuilt.
2020-08-12Fix T79680, T79680: confusing viewport denoise start sample behaviorBrecht Van Lommel
2020-08-12Fixes T77882: artifacts rendering OpenVDB volumes with multiple grids in CyclesKévin Dietrich
The previous algorithm was not using all of the requested grids to build a mesh around the volume due to limitations regarding the use of a dense buffer to gather information about the volume's topology. This resulted in artefacts during rendering. The mesh generation is now done by merging all of the input grids and using the resulting grid's topology to create the mesh. The generation of the mesh is still done in index space as before, and the vertices are converted to object space by using the merged topology grid indexToWorld transform. To be able to merge the grids together we have to make sure that their transformation matrices and their index spaces match, thus, if they do not match we simply resample the grids. This behaviour should tackle one other limitation of the current algorithm, which is that only one transformation matrix was used to generate the final mesh. If we do not have an OpenVDB grid for the requested volume data, we generate a temporary OpenVDB grid for it. Differential Revision: https://developer.blender.org/D8401
2020-08-06Fix T79586: "rendering paused" not shown when viewport render starts pausedBrecht Van Lommel
2020-08-06Cycles: load OpenVDB file earlier in Blender exportBrecht Van Lommel
In an upcoming bugfix we'll use OpenVDB data structures directly to build mesh for sparse OpenVDB volumes, loading them OpenVDB grids earlier and removing any references to Blender data structures makes that easier. This also makes changes to Blender volumes to support this, so Cycles can take ownership of a grid without Blender having to keep its own reference to it. This should also be useful in a future Python API. Ref D8401
2020-08-05Fix T78869: denoising performance regression on WindowsBrecht Van Lommel
Optimization was disabled in this function to work around a bug in MSVC, use a different solution that does not come with such a big performance regression.
2020-08-04Cleanup: typos & co in UI messages (and some other places).Bastien Montagne
2020-08-04Cycles: Fix nan in decomposed transform for degenerated inputSergey Sharybin
The decomposed transform would have consists of nan values if the input transform had zero scale. Now the decomposition will check for zero scale, and if it is detected then the result will be ensured to be finite. Additionally, rotation value will be copied from previous/next time step to help avoiding obscure interpolation. The latter step can become more comprehensive than the current simple implementation. Differential Revision: https://developer.blender.org/D8450
2020-08-04Cycles: Add finite checks for float4 and transformsSergey Sharybin
Currently unused, preparing for an upcoming development.
2020-07-31Fix T79111: Cycles: Image Sequence not renderingPhilipp Oeser
Caused by c7aa0f9d743ee9cafe91b4a51d9f1ecc5e437d71. Since above commit, BKE_image_user_frame_calc requires an image (not just the iuser) to get the framenumber. Cycles used to call this with NULL image (in `image_user_file_path` and `image_user_frame_number`), now pass the image as well. Maniphest Tasks: T79111 Differential Revision: https://developer.blender.org/D8439
2020-07-28Fix T79067: Cycles panorama viewport render stretched after recent changesBrecht Van Lommel
2020-07-28Fix T79219: Cycles NLM denoiser clean passes broken after recent changesBrecht Van Lommel
2020-07-28Fix T79259: OptiX render with fisheye camera is different to CUDAPatrick Mours
The fisheye camera setup causes the edges of the image to not shoot primary rays. This was not respected by OptiX because of an optimization that tried to reduce conditionals around trace calls. Removing that does not seem to have an impact on performance anymore however and it fixes the issue.
2020-07-27Cycles: Enable OptiX on first generation Maxwell GPUs againPatrick Mours
2020-07-24Fix OptiX being shown as available on first generation Maxwell GPUsPatrick Mours
The OptiX kernels are compiled for target "compute_sm_52", which is only available on second generation Maxwell GPUs, so disable support for older ones.
2020-07-20Cycles: adjust Sky texture intensity to follow physical unitsBrecht Van Lommel
The sky will appear brighter than before by default. To compensate for this, lower exposure in the Film panel. The default altitude was also changed from 90 to 15 degrees. Patch contributed by Marco with the help of Ryan Jones. Differential Revision: https://developer.blender.org/D8285
2020-07-20Cycles: Use pre-compiled PTX kernel for older generation when no matching ↵Patrick Mours
one is found This patch changes the discovery of pre-compiled kernels, to look for any PTX, even if it does not match the current architecture version exactly. It works because the driver can JIT-compile PTX generated for architectures less than or equal to the current one. This e.g. makes it possible to render on a new GPU architecture even if no pre-compiled binary kernel was distributed for it as part of the Blender installation. Reviewed By: brecht Differential Revision: https://developer.blender.org/D8332
2020-07-16Cleanup: missing CMake headers from source listsCampbell Barton
2020-07-15Fix T78930: Cycles OpenCL error on graphics cards that don't support half floatBrecht Van Lommel
2020-07-14Cleanup: spellingCampbell Barton
2020-07-13Fix T78881: Cycles OpenImageDenoise not using albedo and normal correctlyBrecht Van Lommel
Properly normalize buffers now. Also expose option to not use albedo and normal just like OptiX.
2020-07-13Cycles: Clamp Sky Texture altitude to avoid numerical issuesLukas Stockner
Differential Revision: https://developer.blender.org/D8091
2020-07-13Cycles: Account for Sky Texture mapping in the sun sampling codeLukas Stockner
Differential Revision: https://developer.blender.org/D8091
2020-07-13Cycles: Change precomputed Sky Texture mapping to prioritize the horizonLukas Stockner
Differential Revision: https://developer.blender.org/D8091
2020-07-13Cycles: Add control for sun intensity in Sky Texture and change altitude to kmLukas Stockner
Differential Revision: https://developer.blender.org/D8091
2020-07-13Cycles: Remove limits on the Sky texture's sun rotationLukas Stockner
For animation/driver purposes, being able to go outside of the 0-360 range makes things easier. Differential Revision: https://developer.blender.org/D8091
2020-07-11Cleanup: spellingCampbell Barton
2020-07-10Fix T78662: Cycles baking fails if denoising is enabled, after recent changesBrecht Van Lommel
This is not supported yet.
2020-07-10Fix build error building without OpenImageDenoiseBrecht Van Lommel
2020-07-10Fix T78801: Eevee missing setting to enable/disable freestyle per view layerBrecht Van Lommel
This was only visible when Cycles was enabled.
2020-07-10Cycles: support OpenImageDenoise in final rendersBrecht Van Lommel
Performance is not great currently due to the API not seeming to support efficient denoising of multiple tiles at the same time. So in many cases only one or a few threads will actually be denoising at the same time. In renders with many samples this is not a big problem, but for faster renders it's a signficant overhead. We should try to optimize this still, possibly by batching denoising of a bigger neighborhood of multiple tiles at once.
2020-07-10Cleanup: reduce hardcoded numbers in denoising neighbor tiles codeBrecht Van Lommel
2020-07-10Cleanup: minor refactoring in Cycles update detection codeBrecht Van Lommel
2020-07-10Cycles: optimize camera inside volume testsMilan Jaros
Only run when there are volumes in the scene, and compute in parallel. Ref T56939 Differential Revision: https://developer.blender.org/D8261
2020-07-10Fix T78776: Cycles OpenCL error after recent changes for holdoutsBrecht Van Lommel
2020-07-09Fix Cycles unnecessary updates to camera in viewport renderBrecht Van Lommel
Problem identified by Milan Jaros.
2020-07-09EEVEE: Implement the missing Sky textureSzymon Ulatowski
I'm not sure if the Sky was deliberately left out or was just waiting for a better moment, but so many I was disappointed that Sky in EEVEE is completely white. There are already 2 implementations (osl and gpu) so this is the third one. Looking at other cases it seems that we are not supposed to share sources between cycles and the rest? So the new util_sky_model files are just copies of what is already in cycles, except that the data file uses the RGB variant of the Hosek/Wilkie model, because we output RGB anyway (but can be easily changed to XYZ if desired - the results are nearly identical). I am not sure if it is okay to pass 3*9 float values as 3 mat4 uniforms (I wanted to use mat3 but it does not work). Also, should I cache the sky model data between renders if the parameters do not change? Reviewed By: fclem, brecht Differential Revision: https://developer.blender.org/D7108
2020-07-08Cycles: support shader transparency for holdout objectsBrecht Van Lommel
Now transparent areas of the object will render objects behind. Fixes T78728.
2020-07-08CMake: Fix spelling of Embree passed to find packageSergey Sharybin
The spelling and capitalization of package name passed to find_package() and find_package_handle_standard_args() needs to match. Silences CMake warning about mismatch. Differential Revision: https://developer.blender.org/D8247
2020-07-08Fix T78324: Different Sky Texture results between CPU and GPULukas Stockner
The problem here was numerical precision: The code calculates the angle between sun and view direction, and the usual acos(dot(a, b)) approach for that has poor numerical performance for almost parallel angles. As a result, the generally tiny difference between floating point computation between CPU and GPU was enough to make the sun vanish at different radii, causing different results. The new version fixes the difference by making the computation much more robust on both platforms.
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