LuxCore not rendering on CPU #626
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Please upload a test file which show the problem. |
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For me, the file renders fine. Can you explain the problem more in detail and make screenshots? |
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Rendering with CPU as compute device: Using GPU as compute device: |
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@neo2068 what other information do you need? Everything rendered on the CPU gets invisible, except for the background colour/sky/HDRI. What could be the cause? Do you suggest some test for me to do? |
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I just found the version 2.61 is working fine with Blender 3.4.1. So it must be some regression with the newer versions. |
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Thanks for the screenshots. It is very strange. Are there any error messages in the console? |
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Thanks for the support. When opening Blender, selecting LuxCore as rendering engine and rendering the default cube without changing anything, I get for Blender 3.41: Here the cube gets rendered normally with the CPU. I pressed ESC to stop it after the 4th noise estimation log message, so I manually wrote the ... at this place. After pressing ESC, that last message about the video card came out. |
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The same with Blender 3.6.0: Here, the cube doesn't get rendered using the CPU, what corresponds to the log messages here. I see only the sky (default background) as if the cube were invisible. But I get these very small noise estimation values in the log. |
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The same now with Blender 4.0.1: Here the cube doesn't get rendered as well, exactly like with Blender 3.6.0 + BlendLuxCore 2.7beta2 above. |
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@neo2068 Blender 3.6.0 is also crashing when I do this, but in Blender 3.4.1 I can do this without any problem. |
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I am having the same issue. SystemO.S.: Fedora 38 KDE |
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Yes, I've got the same error, since I activated some optimizations flags in compilation, in version |
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I'm trying to render glass with caustics. When I select CPU, it processes apparently normally, i.e. the processor gets at full power and the samples counter adds up at some samples/second. But I get only the background rendered, i.e. black or a HDRI, if there is one. It happens for both light integrators — pathtracing and bidirectional.
When I select GPU with OpenCL or CUDA, it renders normally, but Light Tracing, which is required for caustics to work, is not visible, because it is done on the CPU. So I get the rendered image with no caustics.
Tested with LuxCore Blender 2.6 on Blender 3.6 and 2.8 Alpha on Blender 4.0.
System:
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