3D and 2D views have subtle noise or grain. #73424

New Issue

Kurt Loeffler · 2020-01-27T04:59:06+01:00

Kurt Loeffler commented

2020-01-27 04:59:06 +01:00

System Information
Operating system: Windows-10-10.0.18362 64 Bits
Graphics card: GeForce GTX 1080 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 441.12

Blender Version
Broken: version: 2.81 (sub 16), branch: master, commit date: 2019-12-04 11:32, hash: f1aa4d18d4
Worked: (optional)

Short description of error
Viewports have some kind pixel level noise modulated over its contents.

Exact steps for others to reproduce the error
The noise appears in the 3D viewports as well as the render/image editor viewports. It is is only perceptible if you zoom in on a screenshot of a viewport and most noticable in dark areas. It is an issue because it gives false representation of the scene contents for scenes with flat unlit colors, and messes up gif and png image compression. More importantly, it affects the results of color pickers which is a serious issue for texture and color painting. Because the noise seems to be modulated on top of the otherwise pixel perfect colors, this affects all rendering engines. Notice that even the viewport background (lower part of screenshot) has noise.

I have attached an image with zoomed in screenshot on the top, and a desaturated higher contrast version on the bottom.

**System Information** Operating system: Windows-10-10.0.18362 64 Bits Graphics card: GeForce GTX 1080 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 441.12 **Blender Version** Broken: version: 2.81 (sub 16), branch: master, commit date: 2019-12-04 11:32, hash: `f1aa4d18d4` Worked: (optional) **Short description of error** Viewports have some kind pixel level noise modulated over its contents. **Exact steps for others to reproduce the error** The noise appears in the 3D viewports as well as the render/image editor viewports. It is is only perceptible if you zoom in on a screenshot of a viewport and most noticable in dark areas. It is an issue because it gives false representation of the scene contents for scenes with flat unlit colors, and messes up gif and png image compression. More importantly, it affects the results of color pickers which is a serious issue for texture and color painting. Because the noise seems to be modulated on top of the otherwise pixel perfect colors, this affects all rendering engines. Notice that even the viewport background (lower part of screenshot) has noise. I have attached an image with zoomed in screenshot on the top, and a desaturated higher contrast version on the bottom. ![QdcOwGa.png](https://archive.blender.org/developer/F8304178/QdcOwGa.png)

Kurt Loeffler commented

2020-01-27 04:59:06 +01:00

Added subscriber: @kurtloeffler