Adds hysteresis to the resolution divider algorithm to avoid having the resolution bounce around when on the boundary of two resolutions.
Reviewed By: brecht, leesonw
Differential Revision: https://developer.blender.org/D12385
This patch suppresses OS version warnings and hides currently unsupported Metal GPUs when enumerating devices.
Reviewed By: brecht
Differential Revision: https://developer.blender.org/D13506
This reverts commit 5e37f70307.
It is leading to freezing of the entire desktop for a few seconds when stopping
3D viewport rendering on my Linux / NVIDIA system.
This allows real world cameras to be modeled by specifying the coordinates of a
4th degree polynomial that relates a pixels distance (in mm) from the optical
center on the sensor to the angle (in radians) of the world ray that is
projected onto that pixel.
This is available as part of the panoramic lens type, however it can also be
used to model lens distortions in projective cameras for example.
Differential Revision: https://developer.blender.org/D12691
The root of the issue is caused by Cycles ignoring OpenGL limitation on
the maximum resolution of textures: Cycles was allocating texture of the
final render resolution. It was exceeding limitation on certain GPUs and
driver.
The idea is simple: use multiple textures for the display, each of which
will fit into OpenGL limitations.
There is some code which allows the display driver to know when to start
the new tile. Also added some code to allow force graphics interop to be
re-created. The latter one ended up not used in the final version of the
patch, but it might be helpful for other drivers implementation.
The tile size is limited to 8K now as it is the safest size for textures
on many GPUs and OpenGL drivers.
Differential Revision: https://developer.blender.org/D13385
Somehow only a part of rBf4f8b6dde32b0438e0b97a6d8ebeb89802987127 ended up in
Cycles X, causing the issue that commit fixed, "OPTIX_ERROR_INVALID_VALUE" when the
system is out of memory, to show up again.
This adds the missing changes to fix that problem.
Maniphest Tasks: T93620
Differential Revision: https://developer.blender.org/D13488
This patch adds the Metal host-side code:
- Add all core host-side Metal backend files (device_impl, queue, etc)
- Add MetalRT BVH setup files
- Integrate with Cycles device enumeration code
- Revive `path_source_replace_includes` in util/path (required for MSL compilation)
This patch also includes a couple of small kernel-side fixes:
- Add an implementation of `lgammaf` for Metal [Nemes, Gergő (2010), "New asymptotic expansion for the Gamma function", Archiv der Mathematik](https://users.renyi.hu/~gergonemes/)
- include "work_stealing.h" inside the Metal context class because it accesses state now
Ref T92212
Reviewed By: brecht
Maniphest Tasks: T92212
Differential Revision: https://developer.blender.org/D13423
Fix typos in the variables of the Xxf86vm libray to fix link failure
with bfd. These variables are defined in platform_unix.cmake.
Reviewed By: zeddb
Differential Revision: https://developer.blender.org/D12911
Cycles preview rendering could free the image buffers being used by drawing in
another thread due to a race condition. This race condition was unlikely before,
but now that preview renders are started right before we draw the image in the
image editor or load it as a texture in the 3D viewport, it's likely to happen.
As we are close to release this is too risky to fix properly, just avoid freeing
the cache for preview renders instead and accept increased memory usage in some
cases.
The OptiX denoiser does have an upper limit as to how many pixels it can denoise at once, so
this changes the OptiX denoising process to use tiles for high resolution images.
The OptiX SDK does have an utility function for this purpose, so changes are minor, adjusting
the configured tile size and including enough overlap.
Maniphest Tasks: T92308
Differential Revision: https://developer.blender.org/D13436
* Spot lights are now handled as disks aligned with the direction of the
spotlight instead of view aligned disks.
* Point light is now handled separately from the spot light, to fix a case
where multiple lights are intersected in a row. Before the origin of the
ray was the previously intersected light and not the origin of the initial
ray traced from the last surface/volume interaction.
This makes both strategies in multiple importance sampling converge to the same
result. It changes the render results in some scenes, for example the junkshop
scene where there are large point lights overlapping scene geometry and each
other.
Differential Revision: https://developer.blender.org/D13233
This patch adds MetalRT support to Cycles kernel code. It is mostly additive in nature or confined to Metal-specific code, however there are a few areas where this interacts with other code:
- MetalRT closely follows the Optix implementation, and in some cases (notably handling of transforms) it makes sense to extend Optix special-casing to MetalRT. For these generalisations we now have `__KERNEL_GPU_RAYTRACING__` instead of `__KERNEL_OPTIX__`.
- MetalRT doesn't support primitive offsetting (as with `primitiveIndexOffset` in Optix), so we define and populate a new kernel texture, `__object_prim_offset`, containing per-object primitive / curve-segment offsets. This is referenced and applied in MetalRT intersection handlers.
- Two new BVH layout enum values have been added: `BVH_LAYOUT_METAL` and `BVH_LAYOUT_MULTI_METAL_EMBREE` for XPU mode). Some host-side enum case handling has been updated where it is trivial to do so.
Ref T92212
Reviewed By: brecht
Maniphest Tasks: T92212
Differential Revision: https://developer.blender.org/D13353
This patch adds new arg-type parameters to `DeviceQueue::enqueue` and its overrides. This is in preparation for the Metal backend which needs this information for correct argument encoding.
Ref T92212
Reviewed By: brecht
Maniphest Tasks: T92212
Differential Revision: https://developer.blender.org/D13357
This patch fixes an address space mismatch in the film convert kernels on Metal. The `film_get_pass_pixel_...` functions take a `ccl_private` result pointer, but the film convert kernels pass a `ccl_global` memory pointer. Specialising the pass-fetch functions with templates results in compilation errors on Visual Studio, so instead this patch just adds an intermediate local on Metal.
Reviewed By: brecht
Differential Revision: https://developer.blender.org/D13350
Was happening during rendering, causing visual artifacts when doing
CPU+GPU rendering, and giving different in-progress results on different
devices.
The root of the issue comes to the fact that math used in the approximate
shadow catcher calculation might have resulted in negative alpha channel,
and negative values for display are handled differently on CPU and GPU.
Such difference in handling is caused by an approximate conversion used on
the CPU for the performance reasons.
This change makes it so no negative alpha is generated by the approximate
shadow catcher. Not sure if we need some explicit clamping somewhere to
deal with possible negative values coming from somewhere else.
The shadow catcher cornell box tests are to be updated for the new code,
but the new result seems to be more accurate.
Differential Revision: https://developer.blender.org/D13354
Noticed when was looking into T93155. Steps to reproduce:
- Open the .blend file from the report
- Hit F12 to start rendering
- After some tiles were rendered hit Esc
The issue is caused by "sticky" cancel reported via Progress. This means
that once user hit Esc all further requests for cancel state will return
truth, which was preventing OIDN denoiser from completing the denoising
task.
Now only allow stopping the denoiser when interactive rendering requests
a very fast stopping.
Aiming the fix for 3.0 branch.
Differential Revision: https://developer.blender.org/D13352
With the current code in master, scrambling distance is enabled on non-hardware accelerated ray tracing devices see a measurable performance decrease when compared scrambling distance on vs off. From testing, this performance decrease comes from the large tile sizes scheduled in `tile.cpp`.
This patch attempts to address the performance decrease by using different algorithms to calculate the tile size for devices with hardware accelerated ray traversal and devices without. Large tile sizes for hardware accelerated devices and small tile sizes for others.
Most of this code is based on proposals from @brecht and @leesonw
Reviewed By: brecht, leesonw
Differential Revision: https://developer.blender.org/D13042
Some enum names were changed/removed in OptiX 7.4, so some changes are necessary to
make things compile still.
In addition, OptiX 7.4 also adds built-in support for catmull-rom curves, so it is no longer
necessary to convert the catmull-rom data to cubic bsplines first, and has endcaps disabled
by default now, so can remove the special handling via any-hit programs that filtered them
out before.
Differential Revision: https://developer.blender.org/D13351
