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[Max] Bug Reporting / NaN pixels on CoronaSun disc
« on: 2023-12-20, 15:20:25 »
Hi.
NaN pixels are generated on CoronaSun disc when saving as half float exr. Full float exr and cxr does not have this problem.
Corona VFB shows correct sun disc but when half-float EXR file is opened in Resolve and simple correction is applied (for example, lowered gain in Fusion tab) then corona sun disc will show as black/transparent circle. It still exists when final animation/image is exported from Resolve.
Software used: 3ds max 2019, Corona 10 (Build timestamp: Jun 20 2023 10:41:10), Resolve 18.6, Win 11
Similar problem in Affinity Photo, Photoshop, Fusion.
I attached 2 JPGs:
1.Half float EXR exported from Resolve as JPG (with lowered gain) - Not OK
2.Full float EXR exported from Resolve as JPG (with lowered gain) - OK
Attached half float and full float EXRs and simple 3ds max 2019 scene with Corona Sun and Camera. To reproduce the problem:
1. Render image with CoronaSun disc visible
2. Save as half-float and full-float EXR
3. Import file in Resolve
4. In Fusion Tab add Brightness/Contrast node and lower the gain (or do any other manipulation)
This problem can be fixed in many other ways in post but maybe there is something under the hood that can be improved so no extra steps are needed. Using full-float EXRs as a fix is also not ideal because it takes up a lot more space. When rendering 2000+ and multiple elements it adds up fast.
NaN pixels are generated on CoronaSun disc when saving as half float exr. Full float exr and cxr does not have this problem.
Corona VFB shows correct sun disc but when half-float EXR file is opened in Resolve and simple correction is applied (for example, lowered gain in Fusion tab) then corona sun disc will show as black/transparent circle. It still exists when final animation/image is exported from Resolve.
Software used: 3ds max 2019, Corona 10 (Build timestamp: Jun 20 2023 10:41:10), Resolve 18.6, Win 11
Similar problem in Affinity Photo, Photoshop, Fusion.
I attached 2 JPGs:
1.Half float EXR exported from Resolve as JPG (with lowered gain) - Not OK
2.Full float EXR exported from Resolve as JPG (with lowered gain) - OK
Attached half float and full float EXRs and simple 3ds max 2019 scene with Corona Sun and Camera. To reproduce the problem:
1. Render image with CoronaSun disc visible
2. Save as half-float and full-float EXR
3. Import file in Resolve
4. In Fusion Tab add Brightness/Contrast node and lower the gain (or do any other manipulation)
This problem can be fixed in many other ways in post but maybe there is something under the hood that can be improved so no extra steps are needed. Using full-float EXRs as a fix is also not ideal because it takes up a lot more space. When rendering 2000+ and multiple elements it adds up fast.