Change Details

**System Information** Operating system: Linux-5.7.19-2-MANJARO-x86_64-with-arch-Manjaro-Linux 64 Bits Graphics card: Radeon RX 580 Series {F8865329} **Blender Version** Broken: version: 2.91.0 Alpha, branch: master, commit date: 2020-09-10 21:55, hash: `rB66078594d130` Worked: Never, as far as i can tell. (Tested 2.80, 2.83, 2.81a) **Short description of error** Rendering on the GPU using branched path tracing produces artifacts on the denoising albedo and denoising normal passes when using a glass shader (or the principled shader with transmission). The artefacts heavily depend on the sample count. On very low sample count, areas with the glass shader appear mostly black with some thin stripes. On higher sample count most of the glass shader area is transparent as expected, but the normal and albedo pass still have rectangular darker artefacts. When using path tracing or when rendering on the CPU these artefacts do not appear. {F8865330} **Exact steps for others to reproduce the error** Open the attached blend file Render on GPU {F8865332}

**System Information** Operating system: Linux-5.7.19-2-MANJARO-x86_64-with-arch-Manjaro-Linux 64 Bits Graphics card: Radeon RX 580 Series {F8865329} **Blender Version** Broken: version: 2.91.0 Alpha, branch: master, commit date: 2020-09-10 21:55, hash: `rB66078594d130` Worked: Never, as far as i can tell. (Tested 2.80, 2.83, 2.81a) **Short description of error** Rendering on the GPU using branched path tracing produces artifacts on the denoising albedo and denoising normal passes when using a glass shader (or the principled shader with transmission). The artefacts heavily depend on the sample count. On very low sample count, areas with the glass shader appear mostly black with some thin stripes. On higher sample count most of the glass shader area is transparent as expected (i.e. there are less completely black areas), but the normal and albedo pass still have rectangular darker artefacts. Edit: Increasing the tile size has a similar effect like increasing the sample count. When using path tracing or when rendering on the CPU these artefacts do not appear. {F8865330} **Exact steps for others to reproduce the error** Open the attached blend file Render on GPU {F8865332}

**System Information** Operating system: Linux-5.7.19-2-MANJARO-x86_64-with-arch-Manjaro-Linux 64 Bits Graphics card: Radeon RX 580 Series {F8865329} **Blender Version** Broken: version: 2.91.0 Alpha, branch: master, commit date: 2020-09-10 21:55, hash: `rB66078594d130` Worked: Never, as far as i can tell. (Tested 2.80, 2.83, 2.81a) **Short description of error** Rendering on the GPU using branched path tracing produces artifacts on the denoising albedo and denoising normal passes when using a glass shader (or the principled shader with transmission). The artefacts heavily depend on the sample count. On very low sample count, areas with the glass shader appear mostly black with some thin stripes. On higher sample count most of the glass shader area is transparent as expected (i.e. there are less completely black areas), but the normal and albedo pass still have rectangular darker artefacts. Edit: Increasing the tile size has a similar effect like increasing the sample count. When using path tracing or when rendering on the CPU these artefacts do not appear. {F8865330} **Exact steps for others to reproduce the error** Open the attached blend file Render on GPU {F8865332}