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This patch adds a new Cycles device with similar functionality to the
existing GPU devices. Kernel compilation and runtime interaction happen
via oneAPI DPC++ compiler and SYCL API.
This implementation is primarly focusing on Intel® Arc™ GPUs and other
future Intel GPUs. The first supported drivers are 101.1660 on Windows
and 22.10.22597 on Linux.
The necessary tools for compilation are:
- A SYCL compiler such as oneAPI DPC++ compiler or
https://github.com/intel/llvm
- Intel® oneAPI Level Zero which is used for low level device queries:
https://github.com/oneapi-src/level-zero
- To optionally generate prebuilt graphics binaries: Intel® Graphics
Compiler All are included in Linux precompiled libraries on svn:
https://svn.blender.org/svnroot/bf-blender/trunk/lib The same goes for
Windows precompiled binaries but for the graphics compiler, available
as "Intel® Graphics Offline Compiler for OpenCL™ Code" from
https://www.intel.com/content/www/us/en/developer/articles/tool/oneapi-standalone-components.html,
for which path can be set as OCLOC_INSTALL_DIR.
Being based on the open SYCL standard, this implementation could also be
extended to run on other compatible non-Intel hardware in the future.
Reviewed By: sergey, brecht
Differential Revision: https://developer.blender.org/D15254
Co-authored-by: Nikita Sirgienko <nikita.sirgienko@intel.com>
Co-authored-by: Stefan Werner <stefan.werner@intel.com>
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This could result in wrong skipping of SVM nodes in the graph. Now make the
logic consistent with the clamping in the OSL implementation and constant
folding.
Thanks to Christophe Hery for finding the problem and providing the fix.
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Enables Vega and Vega II GPUs as well as Vega APU, using changes in HIP code
to support 64-bit waves and a new HIP SDK version.
Tested with Radeon WX9100, Radeon VII GPUs and Ryzen 7 PRO 5850U with Radeon
Graphics APU.
Ref T96740, T91571
Differential Revision: https://developer.blender.org/D15242
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This change helps decrease Intel GPU binaries compile time by 5-10
minutes without impacting other backends.
Reviewed By: sergey, brecht
Differential Revision: http://developer.blender.org/D15273
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This patch unifies the names of math functions for different data types and uses
overloading instead. The goal is to make it possible to swap out all the float3
variables containing RGB data with something else, with as few as possible
changes to the code. It's a requirement for future spectral rendering patches.
Differential Revision: https://developer.blender.org/D15276
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* Rename "texture" to "data array". This has not used textures for a long time,
there are just global memory arrays now. (On old CUDA GPUs there was a cache
for textures but not global memory, so we used to put all data in textures.)
* For CUDA and HIP, put globals in KernelParams struct like other devices.
* Drop __ prefix for data array names, no possibility for naming conflict now that
these are in a struct.
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And use them more consistently than before.
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This patch adds some useful debugging & profiling env vars to the Metal backend:
- `CYCLES_METAL_PROFILING`: output a per-kernel timing report at the end of the render
- `CYCLES_METAL_DEBUG`: enable per-dispatch tracing (very verbose)
- `CYCLES_DEBUG_METAL_CAPTURE_KERNEL`: enable programatic .gputrace capture for a specified kernel index
Here's an example of the timing report with `CYCLES_METAL_PROFILING` enabled:
```
---------------------------------------------------------------------------------------------------
Kernel name Total threads Dispatches Avg. T/D Time Time%
---------------------------------------------------------------------------------------------------
integrator_init_from_camera 657,407,232 161 4,083,274 0.24s 0.51%
integrator_intersect_closest 1,629,288,440 681 2,392,494 15.18s 32.12%
integrator_intersect_shadow 751,652,291 470 1,599,260 5.80s 12.28%
integrator_shade_background 304,612,074 263 1,158,220 1.16s 2.45%
integrator_shade_surface 1,159,764,041 676 1,715,627 20.57s 43.52%
integrator_shade_shadow 598,885,847 418 1,432,741 1.27s 2.69%
integrator_queued_paths_array 2,969,650,130 805 3,689,006 0.35s 0.74%
integrator_queued_shadow_paths_array 593,936,619 379 1,567,115 0.14s 0.29%
integrator_terminated_paths_array 22,205,417 155 143,260 0.05s 0.10%
integrator_sorted_paths_array 2,517,140,043 676 3,723,579 1.65s 3.50%
integrator_compact_paths_array 648,912,748 155 4,186,533 0.03s 0.07%
integrator_compact_states 20,872,687 155 134,662 0.14s 0.29%
integrator_terminated_shadow_paths_array 374,100,675 438 854,111 0.16s 0.33%
integrator_compact_shadow_paths_array 503,768,657 438 1,150,156 0.05s 0.10%
integrator_compact_shadow_states 37,664,941 202 186,460 0.23s 0.50%
integrator_reset 25,165,824 6 4,194,304 0.06s 0.12%
film_convert_combined_half_rgba 3,110,400 6 518,400 0.00s 0.01%
prefix_sum 676 676 1 0.19s 0.40%
---------------------------------------------------------------------------------------------------
6,760 47.27s 100.00%
---------------------------------------------------------------------------------------------------
```
Reviewed By: brecht
Differential Revision: https://developer.blender.org/D15044
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Must include the AOV writing feature in background shader evaluation.
Differential Revision: https://developer.blender.org/D15114
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Move MNEE to own kernel, separate from shader ray-tracing. This does introduce
the limitation that a shader can't use both MNEE and AO/bevel, but that seems
like the better trade-off for now.
We can experiment with bigger kernel organization changes later.
Differential Revision: https://developer.blender.org/D15070
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Regenerate blackbody RGB curve fit to not clamp values, and extend down to
800K since it does now change below 965K.
Note that as before, blackbody is only defined in the range 800K to 12000K
and has a fixed value outside of that. But within that range there should
be no more unnecessary gamut clamping.
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This patch makes it possible to change the precision with which to
store volume data in the NanoVDB data structure (as float, half, or
using variable bit quantization) via the previously unused precision
field in the volume data block.
It makes it possible to further reduce memory usage during
rendering, at a slight cost to the visual detail of a volume.
Differential Revision: https://developer.blender.org/D10023
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Found those missing casts while looking into a crash report made in
the Blender Chat. Was unable to reproduce the crash, but the casts
should totally be there to avoid integer overflow.
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Ensure the correct total/diffuse/transmission depth is set when evaluating
shaders for MNEE, consistent with regular light shader evaluation.
Differential Revision: https://developer.blender.org/D14902
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Match SVM and ensure valid reflection when setting up BSDFs.
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Made tangent frame consistent across the surface regardless of the sample,
which was not the case with the previous algorithm. Previously, a tangent
frame would stay consistent for the same sample throughout the walk, but not
from sample to sample for the same triangle. This actually resulted in code
simplification.
Also includes additional fixes:
* Fixed an important bug that manifested itself with multiple lights in the
scene, where caustics had abnormally low amplitude: The final light pdf did
not include the light distribution pdf.
* Removed unnecessary orthonormal basis generation function, using cycles'
native one instead.
* Increased solver max iteration back to 64: It turns out we sometimes need
these extra iterations in cases where projection back to the surface takes
many steps. The effective solver iteration count, the most expensive part,
is actually much less than the raw iteration count.
Differential Revision: https://developer.blender.org/D14931
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Also add missing task-ID reference & remove colon after \note as it
doesn't render properly in doxygen.
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This completes support for tiled texture packing on the Blender / Cycles
side of things.
Most of these changes fall into one of three categories:
- Updating Image handling code to pack/unpack tiled and multi-view images
- Updating Cycles to handle tiled textures through BlenderImageLoader
- Updating OSL to properly handle textures with multiple slots
Differential Revision: https://developer.blender.org/D14395
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to safely re-enable binary archives
This patch is the same as D14763, but with a fix for unit test failures caused by ShaderCache fetch logic not working in the non-MetalRT case:
```
diff --git a/intern/cycles/device/metal/kernel.mm b/intern/cycles/device/metal/kernel.mm
index ad268ae7057..6aa1a56056e 100644
--- a/intern/cycles/device/metal/kernel.mm
+++ b/intern/cycles/device/metal/kernel.mm
@@ -203,9 +203,12 @@ bool kernel_has_intersection(DeviceKernel device_kernel)
/* metalrt options */
request.pipeline->use_metalrt = device->use_metalrt;
- request.pipeline->metalrt_hair = device->kernel_features & KERNEL_FEATURE_HAIR;
- request.pipeline->metalrt_hair_thick = device->kernel_features & KERNEL_FEATURE_HAIR_THICK;
- request.pipeline->metalrt_pointcloud = device->kernel_features & KERNEL_FEATURE_POINTCLOUD;
+ request.pipeline->metalrt_hair = device->use_metalrt &&
+ (device->kernel_features & KERNEL_FEATURE_HAIR);
+ request.pipeline->metalrt_hair_thick = device->use_metalrt &&
+ (device->kernel_features & KERNEL_FEATURE_HAIR_THICK);
+ request.pipeline->metalrt_pointcloud = device->use_metalrt &&
+ (device->kernel_features & KERNEL_FEATURE_POINTCLOUD);
{
thread_scoped_lock lock(cache_mutex);
@@ -225,9 +228,9 @@ bool kernel_has_intersection(DeviceKernel device_kernel)
/* metalrt options */
bool use_metalrt = device->use_metalrt;
- bool metalrt_hair = device->kernel_features & KERNEL_FEATURE_HAIR;
- bool metalrt_hair_thick = device->kernel_features & KERNEL_FEATURE_HAIR_THICK;
- bool metalrt_pointcloud = device->kernel_features & KERNEL_FEATURE_POINTCLOUD;
+ bool metalrt_hair = use_metalrt && (device->kernel_features & KERNEL_FEATURE_HAIR);
+ bool metalrt_hair_thick = use_metalrt && (device->kernel_features & KERNEL_FEATURE_HAIR_THICK);
+ bool metalrt_pointcloud = use_metalrt && (device->kernel_features & KERNEL_FEATURE_POINTCLOUD);
MetalKernelPipeline *best_pipeline = nullptr;
for (auto &pipeline : collection) {
```
Reviewed By: brecht
Differential Revision: https://developer.blender.org/D14923
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Differential Revision: https://developer.blender.org/D14893
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Differential Revision: https://developer.blender.org/D14901
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It was wrongly writing passes twice, for both the surface entry and exit points.
We can skip code for filtering closures, emission and holdout also, as these do
nothing with only a subsurface diffuse closure present.
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The Russian roulette probability was not taken into account for volumes in all
cases. It should not be left out from the SD_HAS_ONLY_VOLUME case.
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A shader node setup accidentally used the bump normal as emission. Bump
mapping nodes are excluded from light shader evaluation to reduce kernel size
and register pressure, but in that case should write zero instead of leaving
memory uninitialized.
Thanks to Lukas for helping identify the cause.
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Inspired by D12936 and D12929, this patch adds general purpose
"Combine Color" and "Separate Color" nodes to Geometry, Compositor,
Shader and Texture nodes.
- Within Geometry Nodes, it replaces the existing "Combine RGB" and
"Separate RGB" nodes.
- Within Compositor Nodes, it replaces the existing
"Combine RGBA/HSVA/YCbCrA/YUVA" and "Separate RGBA/HSVA/YCbCrA/YUVA"
nodes.
- Within Texture Nodes, it replaces the existing "Combine RGBA" and
"Separate RGBA" nodes.
- Within Shader Nodes, it replaces the existing "Combine RGB/HSV" and
"Separate RGB/HSV" nodes.
Python addons have not been updated to the new nodes yet.
**New shader code**
In node_color.h, color.h and gpu_shader_material_color_util.glsl,
missing methods hsl_to_rgb and rgb_to_hsl are added by directly
converting existing C code. They always produce the same result.
**Old code**
As requested by T96219, old nodes still exist but are not displayed in
the add menu. This means Python scripts can still create them as usual.
Otherwise, versioning replaces the old nodes with the new nodes when
opening .blend files.
Differential Revision: https://developer.blender.org/D14034
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All released versions appear to work fine. Also slightly change wording.
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The Multiscatter GGX code was missing the same-side checks for incoming and
outgoing directions w.r.t. to shading and geometry normal.
Should not be needed for the Glass variant since it intentionally has both
reflection and transmission.
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* Float/double promotion warnings were mainly meant for avoiding slow
operatiosn in the kernel. Limit it to that to avoid hard to fix warnings
in Hydra.
* Const warnings in Hydra iterators.
* Unused variable warnings when building without glog.
* Wrong camera enum comparisons in assert.
* PASS_UNUSED is not a pass type, only for pass offsets.
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