4 ms·

Yes, but not a single open-source driver can make a render with Blender 3D.

• robert_foss 5y ago
  I assume that's because Blender uses OpenCL? I think a lot of progress is being made on that front.
  • Kelteseth 5y ago
    Well, they just removed in entirely... https://code.blender.org/2021/04/cycles-x/ https://code.blender.org/2021/04/cycles-x/ > Deprecation As part of the new architecture, we are removing some functionality. Most notably: OpenCL rendering kernels. The combination of the limited Cycles split kernel implementation, driver bugs, and stalled OpenCL standard has made maintenance too difficult. We can only make the kinds of bigger changes we are working on now by starting from a clean slate.
    • Doxin 5y ago
      Note that they are not removing GPU rendering. Just the OpenCL kernels. They'll still have NVIDIA and AMD kernels. As long as the open source drivers keep working towards supporting the required features those will eventually work on them.
      • slezyr 5y ago
        > They'll still have ... and AMD kernels. Do they? Blender uses OpenCL implementation for AMD GPUs.
        • Doxin 5y ago
          Oh did I misremember that? It has been a hot minute since I last owned an AMD card. Apologies for the misinformation.
    • zozbot234 5y ago
      Vulkan Compute shaders (or GLSL compute shaders, if supported by the OpenGL version) should be quite a bit more robust than OpenCL kernels. The main issue w/ shaders compared to OpenCL kernels is some missing features in the former, that will have to be optionally supported via standard extensions. The programming model is also quite different, so code will have to be rewritten.
      • 0-_-0 5y ago
        Do you know what the missing features are? I'm very interested, I'm rewriting code from ocl to vulkan.
        • zozbot234 5y ago
          See https://news.ycombinator.com/item?id=27396634 https://news.ycombinator.com/item?id=27396634 for a basic intro, but IIRC the main differences involved are (1) support for general pointers in OpenCL, whereas data indirection in compute shaders involves varying levels of messiness, and (2) OpenCL introduces support for some mathematical functions, that is not in Vulkan Compute. (However, note that OpenCL 3.0 has also made many features optional, so the basic featureset may be more comparable as a result.)
      • gspr 5y ago
        I'll piggyback on your comment for a question: I only very recently started getting into the basic of GPGPU coding. I hate vendor lock in, so I started out with OpenCL. I had a good time, but I do understand that more and more of non-CUDA world (however small that may be) is moving away from OpenCL. What are they moving to? Where should one direct one's "compute learning energy" (if one already excludes CUDA or other proprietary solutions)?
        • fsloth 5y ago
          Not OP, but: Unfortunately you need to pick a platform and target that. Which API you use depends on the platform. DirectX, OpenGL, Vulkan and Metal all have compute capability. So, I think you need to abstract your code at the services level, and provide an implementations for each platform you need to support (the number may be 1 or more than 1). I think you need to direct your "compute learning" energy at the algorithm level. Numerics and all that. The GPU API:s are just the obtuse implementation detail, but not the meat of the thing.
• mappu 5y ago
  The default renderer Eevee is a GPU-only renderer that works fine on my RX 570 with the FOSS amdgpu driver. You can also run Cycles' CUDA backend with ROCm on amdgpu (somewhat..).
  • slezyr 5y ago
    > The default renderer Eevee is a GPU-only renderer that works fine on my RX 570 with the FOSS amdgpu driver. However, you need Cycles, and not Eevee. They have very significant difference in quality. https://all3dp.com/2/blender-render-from-eevee-simply-explained/ https://all3dp.com/2/blender-render-from-eevee-simply-explai... > You can also run Cycles' CUDA backend with ROCm on amdgpu (somewhat..). No. No. No, you can't. They support only some GPUs !!!AND CPUs!!!. No support for RX 5xxx-6xxx XT. They are very picky about the hardware they support. https://github.com/ROCm/ROCm.github.io/blob/master/hardware.md https://github.com/ROCm/ROCm.github.io/blob/master/hardware.... https://github.com/ROCm/ROCm.github.io/blob/master/hardware.md https://github.com/ROCm/ROCm.github.io/blob/master/hardware....
    • zamadatix 5y ago
      570 is in that list so it seems they can?