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The following answer is based on a Twitter thread by Stefan Werner. Volumetric rendering on the CPU can be less noisy with fewer samples, because Cycles uses equi-angular sampling. This importance sampling technique by C. Kulla and M. Fajardo is currently not implemented for GPU rendering. The slides from the Eurographics Symposium on Rendering 2012 may ...


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The following script allows you to enable all GPUs and optionally all CPUs as well. import bpy def enable_gpus(device_type, use_cpus=False): preferences = bpy.context.preferences cycles_preferences = preferences.addons["cycles"].preferences cuda_devices, opencl_devices = cycles_preferences.get_devices() if device_type == "CUDA": ...


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Unlike 3dview, NodeView does not have: matrix = context.region_data.perspective_matrix so in the callback one option is to use gpu.matrix.get_projection_matrix(), it looks something like: def advanced_grid_xy(context, args): geom, config = args coords, indices = geom.coords, geom.indices matrix = gpu.matrix.get_projection_matrix() shader ...


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You need to allow Blender to use your graphics card. Go to Edit->Preferences->System and select the card you want to use. If there’s nothing there, you don’t have a compatible graphics card. No worries, CPU rendering works too. Happy Blendering.


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You can increase viewport speed in multiple ways. 1) Make sure you have GPU Compute on (in preferences and in render tab) 2) Adjust viewport resolution in Render Tab -> Performance -> Viewport -> Pixel size 3) Decrease Render samples in Render Tab -> Sampling -> Viewport 4) Remember that Cycles will always be considerably slower than Evee. Settings on my ...


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By coincidence, today I did a render using Blender 2.8 on a laptop with a Quadro M1000M card. No issues there, worked fine! Quadro cards seem to be made for rendering and GFX design, so a good choice. A good read: https://www.engineering.com/DesignSoftware/DesignSoftwareArticles/ArticleID/18630/Whats-the-Difference-Between-GeForce-and-Quadro-Graphics-Cards....


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